S-1122B50MC-L9JTFU View Datasheet(PDF) - Seiko Instruments Inc

Part Name

Description

Manufacturer

S-1122B50MC-L9JTFU

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

Seiko Instruments Inc 

S-1112/1122 Series

www.sii-ic.com

© Seiko Instruments Inc., 2002-2010

HIGH RIPPLE-REJECTION AND LOW DROPOUT

CMOS VOLTAGE REGULATOR

Rev.6.0_00

The S-1112/1122 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. Compared with the voltage regulators using the conventional

CMOS process, a larger variety of capacitors are available, including small ceramic capacitors. Small SNT-

6A(H) (S-1112 Series only) and SOT-23-5 packages realize high-density mounting. In SOT-23-5, the lineup

includes the S-1112 and S-1122 Series, which differ in pin configuration.

„ Features

• Output voltage:

1.5 V to 5.5 V, selectable in 0.1 V steps.

• High-accuracy output voltage: ±1.0%

• Low dropout voltage:

190 mV typ. (3.0 V output product, IOUT = 100 mA)

• Low current consumption:

During operation: 50 μA typ., 90 μA max.

• High peak current capability:

During shutdown: 0.1 μA typ., 1.0 μA max.

150 mA output is possible (at VIN ≥ VOUT(S) + 1.0 V)*1

• Built-in ON/OFF circuit:

Ensures long battery life.

• Low ESR capacitor can be used: A ceramic capacitor of 0.47 μF or more can be used for the output

capacitor.

• High ripple rejection:

80 dB typ. (at 1.0 kHz)

• Built-in overcurrent protector: Overcurrent of output transistor can be restricted.

• Lead-free, Sn 100%, halogen-free*2

*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

• Power supply for personal communication devices

• Power supply for home electric/electronic appliances

• Power supply for cellular phones

„ Packages

• SNT-6A(H)

• SOT-23-5

Seiko Instruments Inc.

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