S-8354D20MC-JUFT2G Seiko Instruments, S-8354D20MC-JUFT2G Datasheet

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S-8354D20MC-JUFT2G

Manufacturer Part Number
S-8354D20MC-JUFT2G
Description
IC REG SW PWM 2.0V SOT23-5
Manufacturer
Seiko Instruments
Type
Step-Up (Boost)r
Datasheet

Specifications of S-8354D20MC-JUFT2G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
2V
Frequency - Switching
50kHz
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
© Seiko Instruments Inc., 2002-2010
The S-8353/8354 Series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an
oscillation circuit, a power MOS FET, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8353 Series)
and a PWM / PFM switching control circuit (S-8354 Series).
The S-8353/8354 Series can configure the step-up switching regulator with an external coil, capacitor, and diode. In
addition to the above features, the small package and low current consumption make the S-8353/8354 Series ideal for
portable equipment applications requiring high efficiency.
The S-8353 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 models), an excellently designed error
amplifier, and phase compensation circuits.
The S-8354 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 18.7
• Duty ratio : Built-in PWM / PFM switching control circuit (S-8354 Series)
• External parts : Coil, capacitor, and diode
• Output voltage : Selectable in 0.1 V steps between 1.5 V and 6.5 V (for V
• Output voltage accuracy : ±2.4%
• Oscillation frequency : 30 kHz, 50 kHz, and 250 kHz selectable
• Soft start function : 6 ms (50 kHz, typ.)
• Lead-free, Sn 100%, halogen-free
*1.
• 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 communication devices
• Power supplies for microcomputers
• SOT-23-3
• SOT-23-5
• SOT-89-3
Refer to “ Product Name Structure” for details.
15 % to 83 % (30 kHz and 50 kHz models)
15 % to 78 % (250 kHz models)
Selectable in 0.1 V steps between 2.0 V and 6.5 V (for other than V
During shutdown: 0.5
*1
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE
BUILT-IN TRANSISTOR SWITCHING REGULATOR
OUT
Seiko Instruments Inc.
μ
= 1 mA) guaranteed
μ
A (max.)
A (3.3 V, 50 kHz, typ.)
DD
S-8353/8354 Series
/ V
OUT
separate types)
DD
/ V
OUT
separate types)
Rev.3.0
_00
1

Related parts for S-8354D20MC-JUFT2G

S-8354D20MC-JUFT2G Summary of contents

Page 1

... The S-8353 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 models), an excellently designed error amplifier, and phase compensation circuits. ...

Page 2

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series Block Diagrams ( and H Types (Without Shutdown Function) CONT (2) A and H Types (With Shutdown Function) CONT (3) D and J Types ( Separate Type) DD OUT CONT 2 Oscillation circuit IC internal power supply + PWMcontrol circuit − ...

Page 3

... The control system, product types, output voltage, and packages for the S-8353/8354 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

... H (Normal product or with shutdown function 250 kHz separate type) DD OUT J = 250 kHz 3. Product Name (1) SOT-23-3 S-835 xxx xx x *1. Refer to the tape specifications. *2. Refer to the Table 4 to Table 8 in the “5. Product Name List”. 4 Table 3 Package Name Type (Abbreviation Environmental code ...

Page 5

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 (2) SOT-23-5, SOT-89-3 S-835 xxx T2 x *1. Refer to the tape specifications. *2. Refer to the Table 4 to Table 8 in the “5. Product Name List”. 4. Package Package Name Environmental code = G SOT-23-3 Environmental code = U ...

Page 6

... V − 4.5 V − 5.0 V − 6.0 V − 6.5 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. 6 Table 4 S-8353AxxMA S-8353AxxUA Series − ...

Page 7

... V − 4.2 V − 4.5 V − 4.7 V − 5.0 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. S-8353JxxMC Series S-8353J18MC-IYDT2x S-8353J20MC-IYFT2x S-8353J21MC-IYGT2x ...

Page 8

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series Pin Configurations SOT-23-3 Top view Figure 4 SOT-23-5 Top view Figure 5 SOT-89-3 Top view Figure 6 8 Table and H Types (Without shutdown function, V Pin No. Symbol 1 VOUT Output voltage pin and IC power supply pin ...

Page 9

... Board size : (2) Board name : JEDEC STANDARD51-7 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 ...

Page 10

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series Electrical Characteristics (1) 50 kHz Product (A and D 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 11

... V.) / 250 Ω / 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. S-8353/8354 Series is the typical value of the actual output OUT ≤  recommended stabilizing DD 11 ...

Page 12

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series (2) 30 kHz Product (C 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 Current consumption 2 ...

Page 13

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 (3) 250 kHz Product (H and J 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 I SS1 ...

Page 14

... V 250 Ω / 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. Rev.3.0 is the typical value of the actual output OUT ≤  recommended stabilizing DD _00 ...

Page 15

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 Measurement Circuits 300 Ω 1. CONT VOUT * OFF VDD VSS Figure CONT − VSS Figure 9 *1. With shutdown function *2. For separate type DD OUT − 0.1 μF + VOUT V *2 − VDD ...

Page 16

... The S-8354 Series operates under PWM control with the pulse width duty changing from 15% to 83% (78% for H and J type high output load current area. On the other hand, the S-8354 Series operates under PFM control with the pulse width duty fixed at 15 low output load current area, and pulses are skipped according to the load current. ...

Page 17

... The ON / OFF pin does not have hysteresis. CR oscillation circuit 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 Table 17 Output voltage Operation Fixed ≅ Stop IN VOUT ...

Page 18

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series 4. Operation The following are the basic equations [(1) through (7)] of the step-up switching regulator. (Refer to Figure 11 .) VIN Figure 11 Step-Up Switching Regulator Circuit for Basic Equation Voltage at CONT pin at the moment M1 is turned ON (V ...

Page 19

... OUT OFF 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 consumed result, the pin voltage When M1 is turned OFF, the energy stored transmitted through the ON rises rapidly time function, and therefore indicates the maximum value ...

Page 20

... A higher oscillation frequency allows selection of a lower L value, making the coil smaller. The recommended inductances are a 47 μH to 220 μH for A, C, and D types μ μH for H and J 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 21

... V or more at the VDD pin for all products with a setting less than 1.9 V.) An input voltage of 1 more at the VDD pin allows connection of the VDD pin to either the input voltage VIN pin or output VOUT pin. ...

Page 22

... Remark The power supply for the IC chip is from the VOUT pin. (2) S-8353AxxMC, S-8353HxxMC, S-8354AxxMC, S-8354HxxMC − Remark The power supply for the IC chip is from the VOUT pin CONT Oscillation circuit IC internal power supply PWM control circuit or PWM / PFM switching control ...

Page 23

... S-8353DxxMC, S-8353JxxMC, S-8354DxxMC, S-8354JxxMC − Remark The power supply for the IC chip is from the VOUT pin. Caution The Above connection diagram will not guarantee successful operation. evaluation using the actual application to set the constant. SD CONT VDD Oscillation circuit PWM control circuit ...

Page 24

... SII sales person. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • SII claims no responsibility for any and all disputes arising out connection with any infringement of the products including this IC upon patents owned a third party. 24 ...

Page 25

... S-8353A33 CDRH5D28-101 Caution The Above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant shown in Figure 100 mΩ, output voltage = 3.3 V, output load = 100 mA and its CONT VOUT VSS Figure 16 Using Ceramic Capacitor Circuit Example ...

Page 26

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series 2. 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 19 is shown below. (a) Output current (I OUT 100 0.01 0.1 ...

Page 27

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 Characteristics (Typical Data) 1. Example of Major Temperature characteristics (Ta = −40°C to +85°C, V (1) Current Consumption −40 − 100 Ta [°C] (2) Current Consumption −40 − [°C] (3) Current Consumption at Shutdown (I f 1.0 0.8 ...

Page 28

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series (6) Oscillation Frequency ( −40 − [°C] (7) Maximum Duty Ratio (MaxDuty) vs. Temperature (Ta) 100 −40 − 100 Ta [°C] (8) PWM / PFM Switching Duty Ratio (PFMDuty) vs. Temperature (Ta) (S-8354 Series − 40 − 100 Ta [ ° C] (10) ...

Page 29

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 (12) Soft Start Time (t ) vs. Temperature (Ta −40 − 100 Ta [°C] (13) Operation Start Voltage (V ST1 f OSC 1.2 1.0 0.8 0.6 0.4 0.2 0 −40 − [°C] (15) Output Voltage (V ) vs. Temperature (Ta) OUT f 3.40 3 ...

Page 30

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series 2. Examples of Major Power Supply Dependence Characteristics (Ta = 25°C) (1) Current Consumption 1 (I SS1 Voltage (V ), Current Consumption Power Supply Voltage ( 3 OUT [V] DD (2) Oscillation Frequency ( [V] DD (3) Switching Current (I ) vs. Power Supply Voltage (V ...

Page 31

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 3. Output Waveforms ( (1) S-8353A33 Output voltage [0. div] CONT voltage [ div] t [10 μs / div] Output voltage [0. div] CONT voltage [ div] t [10 μs / div] (2) S-8354H33 Output voltage [0. div] CONT voltage [ div μ ...

Page 32

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series 4. Examples of Transient Response Characteristics (Ta = 25°C, 250 kHz, S-8354H33 → 2.0 V) (1) Power- div] (2) ON/ OFF Pin Response ( div] (3) Load Fluctuations ( 100 μA V OUT [0. div] t [200 μs / div] (4) Input Voltage Fluctuations (I 2 ...

Page 33

... Direct current resistance *2. Maximum allowable current *3. Forward voltage *4. Forward current Caution The values shown in the characteristics column of Table 21 above are based on the materials provided by each manufacture. However, consider the characteristics of the original materials when using the above products. Output voltage Control system 5 ...

Page 34

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR S-8353/8354 Series 2. Output Current (I ) vs. Efficiency (η) Characteristics, Output Current (I OUT (V ) Characteristics OUT The following shows the actual (a) Output current (I vs. Output voltage (V ) characteristics under the conditions of No Table 20 . OUT Condition 1 S-8353H50MC (a) Output current (I ) vs. Efficiency (η) OUT 100 ...

Page 35

... STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR Rev.3.0 _00 Condition 5 S-8354A50MC (a) Output current (I ) vs. Efficiency (η) OUT 100 0.01 0 [mA] OUT Condition 6 S-8353A50MC (a) Output current (I ) vs. Efficiency (η) OUT 100 0.01 0 [mA] OUT Condition 7 S-8353A50MC (a) Output current (I ) vs. Efficiency (η) ...

Page 36

... 160 120 0.01 0 [mA] OUT 36 ) Characteristics r ) vs. Ripple voltage (V OUT ) characteristics under the conditions of No Table 20 . Condition 2 S-8353H50MC 10 100 1000 Condition 4 S-8354A50MC 10 100 1000 Condition 6 S-8353A50MC 10 100 1000 Condition 8 S-8353A33MC 10 100 1000 Seiko Instruments Inc. ) characteristics and (b) Output current r 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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