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PDF S-1121 Data sheet ( Hoja de datos )

Número de pieza S-1121
Descripción (S-1111 / S-1121) HIGH RIPPLE-REJECTION LOW DROPOUT
Fabricantes Seiko Instruments 
Logotipo Seiko Instruments Logotipo



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No Preview Available ! S-1121 Hoja de datos, Descripción, Manual

Rev.4.1_00
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR
S-1111/1121 Series
www.datasheet4u.com
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
Output voltage:
High-accuracy output voltage:
Low dropout voltage:
Low current consumption:
High peak current capability:
Built-in ON/OFF circuit:
High ripple rejection:
Built-in overcurrent protector:
Small package:
Lead-free products
1.5 V to 5.5 V, selectable in 0.1 V steps.
±1.0%
200 mV typ. (3.0 V output product, IOUT = 100 mA)
During operation: 35 μA typ., 65 μA max.
During shutdown: 0.1 μA typ., 1.0 μA max.
150 mA output is possible (at VIN VOUT(S) + 1.0 V)*1
Ensures long battery life.
70 dB typ. (at 1.0 kHz)
Overcurrent of output transistor can be restricted.
SOT-23-5
*1. Attention should be paid to the power dissipation of the package when the output current is large.
„ Applications
Power supply for battery-powered devices
Power supply for personal communication devices
Power supply for home electric/electronic appliances
Power supply for cellular phones
„ Package
Package Name
SOT-23-5
Package
MP005-A
Drawing Code
Tape
MP005-A
Reel
MP005-A
Seiko Instruments Inc.
1

1 page




S-1121 pdf
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1111/1121 Series
3. Product name (S-1121 Series)
S-1121
www.datasheet4u.com
x
xx MC – xxx
TF G
IC direction in tape specifications*1
Product name (abbreviation)*2
Package name (abbreviation)
MC: SOT-23-5
Output voltage
15 to 55
(e.g., when the output voltage is 1.5 V,
it is expressed as 15.)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1. Refer to the taping specifications at the end of this book.
*2. Refer to the “Product name list”.
*3. Refer to 3. Shutdown pin (ON/OFF pin) in the “Operation”.
Seiko Instruments Inc.
5

5 Page





S-1121 arduino
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1111/1121 Series
„ Standard Circuit
www.datasheet4u.com
Input
CIN*1
VIN VOUT
ON/OFF
VSS
Output
CL*2
Single GND
GND
*1. CIN is a capacitor for stabilizing the input.
*2. A tantalum capacitor (2.2 μF or more) can be used.
Figure 9
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
„ Application Conditions
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 2.2 μF or more (tantalum 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.
Seiko Instruments Inc.
11

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