S-1121B50MC-N3JTFG Seiko Instruments, S-1121B50MC-N3JTFG Datasheet

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S-1121B50MC-N3JTFG

Manufacturer Part Number
S-1121B50MC-N3JTFG
Description
IC REG LDO 150MA 5.0V SOT23-5
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-1121B50MC-N3JTFG

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 6.5V
Voltage - Dropout (typical)
0.17V @ 100mA
Number Of Regulators
1
Current - Output
150mA (Min)
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
6.5 V
Output Voltage
5 V
Output Type
Fixed
Dropout Voltage (max)
0.26 V at 100 mA
Output Current
150 mA
Line Regulation
0.2 % / V
Load Regulation
40 mV
Voltage Regulation Accuracy
1 %
Maximum Power Dissipation
0.6 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
www.sii-ic.com
© Seiko Instruments Inc., 2002-2010
The S-1111/1121 Series is a positive voltage regulator with a low dropout voltage, high output voltage
accuracy, and low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-
in overcurrent protector prevents the load current from exceeding the current capacitance of the output
transistor. An ON/OFF circuit ensures a long battery life, and a small SOT-23-5 package realize high-
density mounting. The lineup includes the S-1111 and S-1121 Series, which differ in pin configuration.
Features
Applications
Package
• Output voltage:
• High-accuracy output voltage: ±1.0%
• Low dropout voltage:
• Low current consumption:
• High peak current capability:
• Built-in ON/OFF circuit:
• High ripple rejection:
• Built-in overcurrent protector:
• Lead-free, Sn 100%, halogen-free
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “ Product Name Structure” for details.
• Power supply for battery-powered devices
• Power supply for personal communication devices
• Power supply for home electric/electronic appliances
• Power supply for cellular phones
• SOT-23-5
1.5 V to 5.5 V, selectable in 0.1 V steps.
200 mV typ. (3.0 V output product, I
During operation: 35 μA typ., 65 μA max.
During shutdown: 0.1 μA typ., 1.0 μA max.
150 mA output is possible (at V
Ensures long battery life.
70 dB typ. (at 1.0 kHz)
Overcurrent of output transistor can be restricted.
*2
Seiko Instruments Inc.
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR
IN
≥ V
S-1111/1121 Series
OUT
OUT(S)
= 100 mA)
+ 1.0 V)
*1
Rev.5.0
_00
1

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S-1121B50MC-N3JTFG Summary of contents

Page 1

... Built-in ON/OFF circuit: • High ripple rejection: • Built-in overcurrent protector: • Lead-free, Sn 100%, halogen-free *1. Attention should be paid to the power dissipation of the package when the output current is large. *2. Refer to “ Product Name Structure” for details. Applications • Power supply for battery-powered devices • ...

Page 2

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Block Diagram VIN ON/OFF VSS *1. Parasitic diode 2 Overcurrent protector + ON/OFF − circuit Reference voltage circuit Figure 1 Seiko Instruments Inc. Rev.5.0 _00 *1 VOUT ...

Page 3

... The product types and output voltage for the S-1111/1121 Series can be selected at the user’s request. Refer to the “1. Product name” for the meanings of the characters in the product name, “2. Package” regarding the package drawings and “3. Product name list” for the full product names. ...

Page 4

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series (2) S-1121 Series S-1121 − xxx TF x *1. Refer to the tape specifications at the end of this book. *2. Refer to the “Product name list”. *3. Refer to 3. Shutdown (ON/OFF pin) in the “Operation”. 2. Package Package Name SOT-23-5 ...

Page 5

... Remark 1. Please contact our sales office for type A products Please select products of environmental code = U for Sn 100%, halogen-free products. Table 1 SOT-23-5 S-1111B15MC-NYATFx S-1111B16MC-NYBTFx S-1111B17MC-NYCTFx S-1111B18MC-NYDTFx S-1111B19MC-NYETFx S-1111B20MC-NYFTFx S-1111B21MC-NYGTFx ...

Page 6

... Remark 1. Please contact our sales office for type A products Please select products of environmental code = U for Sn 100%, halogen-free products. 6 Table 2 SOT-23-5 S-1121B15MC-N2ATFx S-1121B16MC-N2BTFx S-1121B17MC-N2CTFx S-1121B18MC-N2DTFx S-1121B19MC-N2ETFx S-1121B20MC-N2FTFx ...

Page 7

... Figure 2 Table 3 Pin No. Symbol 1 VIN 2 VSS 3 ON/OFF * VOUT *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Table 4 Pin No. Symbol 1 VOUT 2 VSS 3 VIN 4 ON/OFF * *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Seiko Instruments Inc. S-1111/1121 Series ...

Page 8

... 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. Figure 3 Power Dissipation of Package (When Mounted on Board) ...

Page 9

... Specified output voltage *3. Output voltage temperature coefficient *5. The output current can be at least this value. Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation of the package when the output current is large. This specification is guaranteed by design. ...

Page 10

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Test Circuits 1. Set to power VIN VOUT + V ON/OFF VSS Figure VIN VOUT ON/OFF VSS Set GND IN Figure 5 + VIN VOUT A ON/OFF VSS Set to power ON Figure 6 VOUT VIN + A V ON/OFF VSS Figure 7 VIN VOUT + V ON/OFF ...

Page 11

... Application Conditions 1.0 μF or more Input capacitor ( 2.2 μF or more (tantalum capacitor) Output capacitor ( Caution A general series regulator may oscillate, depending on the external components selected. Check that no oscillation occurs with the application using the above capacitor. Input VIN VOUT *1 ON/OFF C IN ...

Page 12

... Load regulation (ΔV OUT2 Indicates the dependency of the output voltage on the output current. That is, the value shows how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged. 5. Dropout voltage (V ) drop ...

Page 13

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.5.0 _00 6. Temperatur e coefficien The shadowed area in Figure 10 is the range where V when the temperature coefficient of the output voltage is ±100 ppm/°C. V OUT(E) * change in the temperature of the output voltage [mV/°C] is calculated using the following equation. Δ ° = OUT * mV/ ...

Page 14

... S-1111/1121 Series Operation 1. Basic operation Figure 11 shows the block diagram of the S-1111/1121 Series. The error amplifier compares the reference voltage (V divided by feedback resistors R to ensure a certain output voltage free of any fluctuations of input voltage and temperature. VIN Current supply V ref Reference voltage VSS *1 ...

Page 15

... The structure of the ON/OFF pin is as shown in Figure 12. Since the ON/OFF pin is neither pulled down nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption increases if a voltage of 0 used, connect it to the VSS pin if the logic type is “A” and to the VIN pin “B”. Logic Type ON/OFF Pin A “ ...

Page 16

... Therefore, always place a capacitor of 2.2 μF or more between VOUT and VSS pins. A tantalum type capacitor is recommended. Moreover, to secure stable operation of the S-1111/1121 Series necessary to employ a capacitor with an ESR within an optimum range (0 Ω). Using a capacitor whose ESR is outside the optimum range (approximately 0 Ω), whether larger or smaller, may cause an unstable output, resulting in oscillation ...

Page 17

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.5.0 _00 Characteristics (Typical Data) Remark The following, which describes the S-1111 Series as the typical product, shows typical data common to the S-1121 Series. (1) Output Voltage vs. Output current (when load current increases) S-1111B15 ( °C) 2 ...

Page 18

... I [mA] OUT S-1111B50 0.25 0.2 85°C 0.15 0.1 0. 100 I [mA] OUT (4) Dropout voltage vs. Set output voltage 0.4 150 mA 0.35 0.3 0.25 100 mA 0 [V] OTA 18 S-1111B30 25°C -40°C 150 200 25°C −40°C ...

Page 19

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.5.0 _00 (5) Output voltage vs. Ambient temperature S-1111B15 1.6 1.55 1.5 1.45 1.4 -40 - [°C] S-1111B50 5.1 5.08 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 -40 - [°C] (6) Current consumption vs. Input voltage S-1111B15 25° −40° [V] IN ...

Page 20

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series (7) Ripple rejection S-1111B15 ( ° 2.2 μ OUT 100 100 1 k Frequency [Hz] S-1111B50 ( ° 2.2 μ OUT 100 100 1 k Frequency [Hz] 20 S-1111B30 ( ° OUT 100 OUT 100 Seiko Instruments Inc. = 2.2 μF ...

Page 21

... HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.5.0 _00 Reference Data (1) Input transient response characteristics = 30 mA 5.0 μ 2.2 μ OUT OUT 3.025 3.02 3.015 V IN 3.01 3.005 3 2.995 - 100 120 140 160 180 t [μs] (2) Load transient response characteristics = 4 2.2 μ 1.0 μ ...

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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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