S-8357E50MC-NLJT2G Seiko Instruments, S-8357E50MC-NLJT2G Datasheet

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S-8357E50MC-NLJT2G

Manufacturer Part Number
S-8357E50MC-NLJT2G
Description
IC REG CTRL PWM 5.0V SOT23-5
Manufacturer
Seiko Instruments
Type
Step-Up (Boost)r
Datasheet

Specifications of S-8357E50MC-NLJT2G

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
100mA
Frequency - Switching
100kHz
Voltage - Input
0.9 ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Power - Output
250mW
Output Voltage
5 V
Input Voltage
10 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
S-8357E50MC-NLJT2G
Manufacturer:
SII Semiconductor Corporation
Quantity:
12 000
© Seiko Instruments Inc., 2002-2010
The S-8355/56/57/58 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage
source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8355/57 Series) and
a PWM/PFM switching control circuit (S-8356/58 Series).
With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a
high output current.
The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control
circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an
excellently designed error amplifier and a phase compensation circuits.
S-8356/58 Series features a PWM/PFM switching controller that can switch the operation to a PFM controller with a duty
ratio is 15% under a light load to prevent a decline in the efficiency due to the IC operating current.
www.sii-ic.com
Features
Applications
Packages
• Low voltage operation : Startup at 0.9 V min. (I
• Low current consumption : During operation 25.9 μA (3.3 V, 100 kHz, typ.)
• Duty ratio : Built-in PWM/PFM switching control circuit (S-8356/58 Series)
• External parts : Coil, diode, capacitor, and transistor
• Output voltage : Selectable in 0.1 V steps between 1.5 and 6.5 V (for V
• Output voltage accuracy : ±2.4%
• Oscillation frequency : 100 kHz, 250 kHz, 300 kHz, 600 kHz selectable
• Soft start function : 6 ms (100 kHz, typ.)
• Shutdown function
• Lead-free, Sn 100%, halogen-free
*1. Refer to “ Product Name Structure” for details.
• Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs
• Power supplies for audio equipment such as portable CD / MD players
• Constant voltage power supplies for cameras, VCRs, and communications devices
• Power supplies for microcomputers
• SOT-23-3
• SOT-23-5
• SOT-89-3
• 6-Pin SNB(B)
15 to 83% (100 kHz models)
15 to 78% (250 kHz, 300 kHz, and 600 kHz models)
Selectable in 0.1 V steps between 2.0 and 6.5 V (for other than V
During shutdown 0.5 μA (max.)
*1
PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or
Seiko Instruments Inc.
OUT
= 1 mA) guaranteed
S-8355/56/57/58 Series
DD
/ V
OUT
separate types)
DD
/ V
OUT
separate types)
Rev.7.0
_00
1

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S-8357E50MC-NLJT2G Summary of contents

Page 1

... The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an excellently designed error amplifier and a phase compensation circuits. ...

Page 2

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Block Diagrams (1) S-8357/58 Series B, H and F Types (Without Shutdown Function) Oscillation circuit PWMcontrol circuit or EXT PWM / PFM switching control circuit Soft start built-in Phase reference power compensation ...

Page 3

... The control system, product types, output voltage, and packages for the S-8355/56/57/58 Series can be selected at the user’s request. Please refer to the “3. Product Name” for the definition of the product name, “4. Package” regarding the package drawings and “5. Product Name List” for the full product names. ...

Page 4

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (2) PWM / PFM Switching Control Products Switching Product Name Frequency kHz S-8356KxxMC 100 S-8356LxxMC, 250 S-8356LxxBD S-8356MxxMC, 300 S-8356MxxBD S-8356QxxMC, 600 S-8356QxxBD S-8358BxxMC 100 S-8358BxxMA 100 S-8358BxxUA 100 ...

Page 5

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 3. Product Name (1) SOT-23-3 Packages S-835 xxx T2 G *1. Refer to the tape specifications. *2. Refer to the Table 4 to Table 13 in the “5. Product Name List”. Environmental code G : Lead-free (for details, please contact our sales office direction in tape specifications T2 : SOT-23-3 *2 ...

Page 6

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (2) SOT-23-5, SOT-89-3 Packages S-835 xxx T2 x *1. Refer to the tape specifications. *2. Refer to the Table 4 to Table 13 in the “5. Product Name List”. 6 Environmental code U : Lead-free (Sn 100%), halogen-free G : Lead-free (for details, please contact our sales office) ...

Page 7

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (3) 6-Pin SNB(B) Package S-835 xxx - TF *1. Refer to the tape specifications. *2. Refer to the Table 4 to Table 13 in the “5. Product Name List”. 4. Package Package Name SOT-23-3 SOT-23-5 SOT-89-3 ...

Page 8

... S-8355Q34MC-OWTT2x 4.5 V S-8355Q45MC-OXET2x 5.0 V S-8355Q50MC-OXJT2x 5.1 V S-8355Q51MC-OXKT2x 6.0 V S-8355Q60MC-OXTT2x Remark 1. Please contact the SII marketing department for products with an output voltage other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. 8 Table 4 S-8355LxxMC S-8355MxxMC Series S-8355L15MC-NCAT2x − ...

Page 9

... S-8356Q35MC-OYUT2x − 3.7 V 4.0 V S-8356Q40MC-OYZT2x 5.0 V S-8356Q50MC-OVJT2x 5.3 V S-8356Q53MC-OVMT2x Remark 1. Please contact the SII marketing department for products with an output voltage other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. Table 6 S-8356LxxMC S-8356MxxMC Series − S-8356M15MC-MEAT2x − ...

Page 10

... Series − 3.0 V − 3.3 V 5.0 V S-8357J50BD-NPJ-TF − 5.3 V Remark 1. Please contact the SII marketing department for products with an output voltage other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. 10 Table 8 S-8357BxxMA S-8357BxxUA Series − − ...

Page 11

... S-8358N30MC-O6PT2x 3.3 V S-8358N33MC-O6ST2x 5.0 V S-8358N50MC-O7JT2x − 5.2 V 5.3 V S-8358N53MC-O7MT2x Remark 1. Please contact the SII marketing department for products with an output voltage other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. Table 11 S-8358BxxMA S-8358BxxUA Series − − ...

Page 12

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Pin Configurations SOT-23-3 Top view Figure 5 SOT-23-5 Top view Figure 6 12 Table 14 S-8357/58 Series B, H and F Types (Without shutdown function, V Pin No. Symbol 1 VOUT Output voltage pin and IC power supply pin ...

Page 13

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 SOT-89-3 Top view Figure 7 6-Pin SNB(B) Top view Bottom view *1. Connect the heatsink of back side at shadowed area to the board, and set electric potential open or VDD. However, do not use it as the function of electrode ...

Page 14

... DD OUT *3. When mounted on board [Mounted board] (1) Board size : (2) Name : Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. (1) When mounted on board 1200 1000 800 600 ...

Page 15

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 Electrical Characteristics (1) 100 kHz Product (B, E and K Types) Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Operation holding voltage ...

Page 16

... OFF − − Ω OUT(S) OFF pin is connected to V OUT = 0.8 V. However, 1.8 V ≤ ≥ 1.8 V must be applied for products with a set value of less DD Seiko Instruments Inc. (Ta = 25°C unless otherwise specified) Min. Typ. Max. Unit − 0.1 − μA 0.1 − ...

Page 17

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (2) 250 kHz Product (H, J and L Types) Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Operation holding voltage V HLD Current consumption 1 ...

Page 18

... V Ω OUT(S) OFF pin is connected to V OUT = 0.8 V. However, 1.8 V ≤ ≥ 1.8 V must be applied for products with a set value of less DD Seiko Instruments Inc. is the typical value of the actual output voltage. OUT ≤ recommended stabilizing DD Rev.7.0 _00 ...

Page 19

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (3) 300 kHz Product (F, G and M Types) Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Operation holding voltage V HLD Current consumption 1 ...

Page 20

... V Ω OUT(S) / OFF pin is connected to V OUT = 0.8 V. However, 1.8 V ≤ ≥ 1.8 V must be applied for products with a set value of less DD Seiko Instruments Inc. is the typical value of the actual output voltage. OUT ≤ recommended stabilizing DD Rev.7.0 _00 ...

Page 21

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (4) 600 kHz Product (N Type) Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Operation holding voltage V HLD Current consumption 1 I SS1 ...

Page 22

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series External parts Coil: Diode: Capacitor: Transistor: Base resistor ( Base capacitor ( × 0.6 applied OUT(S) OUT OUT(S) Remark V specified above is the set output voltage value, and V OUT(S) 22 CDRH6D28-100 of Sumida Corporation RB461F (Schottky type) of Rohm Co., Ltd. F93 ( μ ...

Page 23

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (5) 600 kHz Product (P and Q types) Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Operation holding voltage V HLD Current consumption 1 ...

Page 24

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Measurement Circuits 1. EXT * OFF VSS − EXT ON VSS 3. EXT * OFF VSS − EXT ON VSS *1. With shutdown function *2. For separate type DD OUT 24 VOUT VDD − 0.1 μF Figure 10 ...

Page 25

... The switching frequency does not change, although the pulse width changes from 0 to 83% (78% for and Q types) corresponding to each load current. The ripple voltage generated from switching can thus be removed easily through a filter because the switching frequency is constant ...

Page 26

... ON / OFF pin “H” “L” *1. Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode forward voltage from pin in a floating state because it has the structure shown in Figure 14 and is not pulled Table 28 ...

Page 27

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 4. Operation The following are the basic equations [(1) through (7)] of the step-up switching regulator. (Refer to Figure 15.) VIN Figure 15 Step-Up Switching Regulator Circuit for Basic Equation Voltage at CONT pin at the moment M1 is turned ON (V ...

Page 28

... V − ⎝ Therefore to reduce the ripple voltage important that the capacitor connected to the output pin has a large capacity and a small R . ESR When receiving the output current (I OUT is a time function, and therefore indicates the maximum value (ripple voltage (V OUT and load current (I ) match ...

Page 29

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 External Parts Selection The relationship between the major characteristics of the step-up circuit and the characteristics parameters of the external parts are shown in Figure 16. For larger output current ? Smaller inductance ...

Page 30

... OUT A higher oscillation frequency allows selection of a lower L value, making the coil smaller. The recommended inductances are 100 μH for B, E, and K types μH for and M types, 3 μH for N, P and Q types. Be careful of the allowable inductor current when choosing an inductor. Exceeding the allowable current of the inductor causes magnetic saturation, much lower efficiency and destruction of the IC chip due to a large current ...

Page 31

... Since the ON-resistance of the MOS FET might depend on the difference between the output voltage (V the threshold voltage of the MOS FET, and affect the output current as well as the efficiency, the threshold voltage should be low. When the output voltage is low, the circuit operates only when the MOS FET has a threshold voltage lower than the output voltage. ...

Page 32

... FE A small R value can increase the output current, but the efficiency decreases. Since a current may flow on the b pulse and the voltage may drop due to wiring resistance or other factors in the actual circuit, therefore the optimum R value should be determined by experiment. b Connecting the speed-up capacitor (C switching loss and improves the efficiency ...

Page 33

... Separate Type (For and Q Types) DD OUT The and Q types provides separate internal circuit power supply (VDD pin) and output voltage setting pin (VOUT pin) in the IC, making it ideal for the following applications. (1) When changing the output voltage with external resistance. (2) When outputting a high voltage such as + +20 V. ...

Page 34

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Standard Circuits (1) S-8357BxxMA, S-8357BxxUA, S-8358BxxMA, S-8358BxxUA + − Remark The power supply for the IC chip is from the VOUT pin. (2) S-8357BxxMC, S-8357FxxMC / BD, S-8357HxxMC / BD, S-8357NxxMC / BD, S-8358BxxMC, S-8358FxxMC / BD, S-8358HxxMC / BD, S-8358NxxMC / BD L 2200 pF + − KΩ IN ...

Page 35

... S-8355KxxMC / BD, S-8355LxxMC / BD, S-8355MxxMC / BD, S-8355QxxMC / BD, S-8356KxxMC / BD, S-8356LxxMC / BD, S-8356MxxMC / BD, S-8356QxxMC / BD L 2200 pF + − KΩ Remark The power supply for the IC chip is from the VDD pin. (6) S-8355KxxMC / BD, S-8355LxxMC / BD, S-8355MxxMC / BD, S-8356KxxMC / BD, S-8356LxxMC / BD, S-8356MxxMC / − Remark The power supply for the IC chip is from the VDD pin. ...

Page 36

... The performance of this IC varies depending on the design of the PCB patterns, peripheral circuits and external parts. Thoroughly test all settings with your device. Also, try to use the recommended external parts. If not, contact an SII sales person. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • ...

Page 37

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 Application Circuits 1. LCD Power Supply The following example is an application power supply circuit ( output) to drive an LCD panel, and its characteristics − Condition Output Voltage S-8356M50 CDRH5D18-220 S-8356M50 CDRH5D18-220 ...

Page 38

... Output current (I OUT 100 0.01 0.1 I OUT Condition 2 (a) Output current (I OUT 100 0.01 0.1 I Condition 3 (a) Output current (I OUT 100 0.01 0 OUT ) characteristics under conditions Table 30 is shown below. ) vs. Efficiency (η 100 [mA] ) vs. Efficiency (η 100 [mA] OUT ) vs. Efficiency (η 3 5 ...

Page 39

... Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. in series with the ceramic ESR = 100 mΩ, output voltage = 3.3 V, output load = 500 mA and its EXT VSS Figure 27 Using Ceramic Capacitor Circuit Example ...

Page 40

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series 4. Output Characteristics of The Using Ceramic Capacitor Circuit Example The data of the step-up characteristics (a) Output current ( vs. Output voltage (V OUT OUT Table 31 is shown below. Condition 1 (a) Output current (I ...

Page 41

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 Condition 3 (a) Output current (I ) vs. Efficiency (η) OUT 100 0.01 0 OUT (c) Output Current (I OUT 100 0.01 0 OUT (b) Output current (I 3.32 3.31 3. 0 3.28 ...

Page 42

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Characteristics (Typical Data) 1. Example of Major Temperature characteristics (Ta = −40 to +85 °C) (1) Current Consumption vs. Temperature (Ta) (V SS1 −40 − [°C] 100 −40 − [°C] (2) Current Consumption vs. Temperature (Ta) (V SS2 ...

Page 43

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (3) Current Consumption at Shutdown (I f 1.0 0.8 0.6 0.4 0.2 0 −40 − [°C] (4) EXT Pin Output Current “H” (I EXTH OUT −60 −50 −40 −30 −20 −10 0 − ...

Page 44

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (7) Maximum Duty Ratio (MaxDuty) vs. Temperature (Ta −40 − [° −40 − [°C] (8) PWM / PFM Switching Duty Ratio (PFMDuty) vs. Temperature (Ta) (S-8356/58 Series 3 OUT −40 − [°C] (10 OFF Pin Input Voltage “L” ...

Page 45

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (12) Soft Start Time (t ) vs. Temperature (Ta OSC −40 − [°C] f OSC −40 − [°C] (13) Operation Start Voltage (V ST1 OUT 1.2 1.0 0.8 0.6 0.4 0.2 0 −40 −20 0 ...

Page 46

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (15) Output Voltage (V ) vs. Temperature (Ta) (V OUT 3.40 3.35 3.30 3.25 3.20 −40 − [°C] 3.40 3.35 3.30 3.25 3.20 −40 − [° 3.3 V) OUT f = 100 kHz OSC ...

Page 47

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 2. Examples of Major Power Supply Dependence Characteristics ( °C) (1) Current Consumption vs. Power Supply Voltage (V SS1 (V = 3.3 V) OUT [V] DD (2) Current Consumption at Shutdown ( 3 OUT 1.0 0.8 0.6 0.4 0 [V] DD (3) Oscillation Friquency ( ...

Page 48

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (4) Maximum Duty Ratio (MaxDuty) vs. Power Supply Voltage (V 100 [V] DD 100 [V] DD (5) EXT Pin Output Current “H” (I Power Supply Voltage (V DD −100 −80 −60 −40 − 100 kHz ...

Page 49

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (7) Output Voltage (V ) vs. Power Supply Voltage (V OUT 3.5 3.0 2.5 2.0 1 [V] DD 3.5 3.0 2.5 2 Separate Type 100 kHz OSC 600 kHz OSC Seiko Instruments Inc. ...

Page 50

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series 3. Output Waveforms (1) S-8358B33MC Output voltage [0. div] 4 CONT voltage 2 [2 div] 0 −25 −15 − −20 −10 time [μs] Output voltage [0. div] 4 CONT voltage 2 [2 div] 0 −25 −15 − − ...

Page 51

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (3) S-8358N33MC Output voltage [0. div] 4 CONT voltage 2 [2 div] 0 −5 −3 − −4 −2 time [μs] Output voltage [0. div] 4 CONT voltage [2 div −5 −3 − −4 −2 time [μs] ...

Page 52

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series 4. Examples of Transient Response Characteristics (1) Power- V→ 100 kHz OUT − time [ms] 300 kHz OUT − time [ms] 600 kHz OUT − time [ms OUT OUT OUT Seiko Instruments Inc. ...

Page 53

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (2) ON/ OFF Pin Response ( 100 kHz, I OUT V OUT ON/OFF − time [ms] 300 kHz OUT ON/OFF − time [ms] 600 kHz OUT ON/OFF − time [ms → 2 OFF = OUT OUT ...

Page 54

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series (3) Load Fluctuations : 100 μA → 100 mA 100 kHz, I OUT I OUT 100 mA 100 μA V OUT [0 div] −0.2 0.2 0.6 0 0.4 0.8 time [ms] : 100 μA → 100 mA 300 kHz, I ...

Page 55

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 (4) Input Voltage Fluctuations (I = 1.98 V → 2.64 V 100 kHz 3.0 2.5 2.0 1.5 −0.2 0.2 0.6 1.0 0 0.4 0.8 1.2 time [ms] = 1.98 V → 2.64 V 300 kHz 3.0 2.5 2 ...

Page 56

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Reference Data Use this reference data to choose the external parts. This reference data makes it possible to choose the recommended external part based on the application and characteristics data. 1. External Parts for Reference Data Table 32 Efficiency vs ...

Page 57

... Drain source voltage *6. Gate source voltage *7. Input capacitance *8. Drain current Caution The values shown in the characteristics column of Table 33 above are based on the materials provided by each manufacture. However, consider the characteristics of the original materials when using the above products. Table 33 Properties of External Parts ...

Page 58

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series 2. Output Current (I ) vs. Efficiency (η) Characteristics, Output Current (I OUT The following shows the actual (a) Output current (I vs. Output voltage (V ) characteristics under the conditions of No Table 32. OUT Condition 1 S-8357F33 (a) Output current (I ) vs. Efficiency (η) OUT 100 ...

Page 59

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 Condition 4 S-8357B33 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 5 S-8358B33 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 6 S-8357B50 (a) Output current (I ) vs. Efficiency (η) ...

Page 60

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Condition 8 S-8357B33 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 9 S-8358B33 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 10 S-8357B50 (a) Output current (I ) vs. Efficiency (η) ...

Page 61

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.7.0 _00 Condition 12 S-8356M50 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 13 S-8357N33 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT Condition 14 S-8357N50 (a) Output current (I ) vs. Efficiency (η) ...

Page 62

... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Condition 16 S-8356Q50 (a) Output current (I ) vs. Efficiency (η) OUT 100 0 [mA] OUT 62 (b) Output current (I 5.2 5.1 5.0 4 4.7 100 1000 0.1 Seiko Instruments Inc. Rev.7 ...

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... Condition 7 S-8356M50 150 = 100 0 [mA] OUT ) vs. Ripple voltage (Vr) characteristics and (b) Output current OUT ) characteristics under the conditions of No Table 32. Condition 2 S-8357F50 150 100 50 100 1000 Condition 4 S-8357B33 150 100 50 100 1000 Condition 6 S-8357B50 150 100 50 100 1000 Condition 8 S-8357B33 150 100 ...

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... STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series Condition 9 S-8358B33 150 = 100 0 OUT Condition 11 S-8357F33 150 = 100 0 OUT Condition 13 S-8357N33 150 = 100 0 OUT Condition 15 S-8356Q33 150 =1 =2 100 0 OUT 64 Condition 10 S-8357B50 100 ...

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... Seiko Instruments Inc. is strictly prohibited. • The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc. ...

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