S-1721 datasheet(1/38 Pages) SII

Part #	S-1721

Description	SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

PDF	38 Pages

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Manufacturer	SII [Seiko Instruments Inc]

Direct Link	http://www.sii.co.jp

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1 / 38 page

Rev.1.1_00

SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW

CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series

Seiko Instruments Inc.

1

S-1721 Series, developed using the CMOS technology, is

a 2-channel positive voltage regulator IC which has the

low dropout voltage, the high-accuracy output voltage and

the low output current consumption of 150mA.

Users are able to use a small ceramic capacitor of 1.0

µF

for this IC. This IC includes two regulator circuits in the

package SOT-23-6 or super-small SNT-6A.

S-1721 Series has much lower current consumption than

S-1711 Series, this IC is ideal for mobile devices.

Features

• Output voltage:

1.2 V to 5.0 V, selectable in 0.05 V step.

• A ceramic capacitor of 1.0 µF or more can be used as the I/O capacitor.

• Wide input voltage range:

1.7 V to 6.5 V

• High-accuracy output voltage:

±1.0%

• Low dropout voltage:

130 mV typ. (products having the output of 3.0 V, IOUT

= 100 mA)

• Low current consumption:

During operation:

25

µA typ., 45 µA max. (products having the output of

3.0 V, per circuit)

During shutdown:

0.1

µA typ., 1.0 µA max.

• Output current:

Possible to output 150 mA (at VIN

≥ VOUT(S) + 1.0 V)

*1 (per circuit)

• High ripple rejection:

80 dB typ. (products having the output under 1.8 V, at 1.0 kHz)

• Built-in overcurrent protector:

limits overcurrent of output transistor

• Built-in ON/OFF circuit:

Ensures long battery life.

• Pull-up or pull-down resistor can be selected.

• Small package:

SNT-6A, SOT-23-6

• Lead-free product

*1. Attention should be paid to the power dissipation of the package when the output current is large.

Applications

• Power supply for cellular phones

• Power supply for battery-powered devices

Packages

Drawing Code

Package Name

Package

Tape

Reel

Land

SNT-6A

PG006-A

SOT-23-6

MP006-A

−

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S-1721 Datasheet(PDF) 1 Page - Seiko Instruments Inc

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