S-1702 Series

www.sii-ic.com

SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH

BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION

© Seiko Instruments Inc., 2008-2012

Seiko Instruments Inc.

1

The S-1702 Series, developed based on CMOS technology, is a 150 mA output positive voltage regulator with a low

dropout voltage, a high-accuracy output voltage, and low current consumption.

The S-1702 Series includes a voltage regulator with high-accuracy output voltage of

±1.0% allowing to use a ceramic

capacitor of 1.0

μF or more, and a voltage detector that monitors the output/input voltage of the regulator. It also includes

an overcurrent protector that prevents the output current from exceeding the current capacitance of the output transistor

and an output forcible discharge circuit for the regulator operation off.

Small SNT-6A package is available for the S-1702 Series. And an external small capacitor can be used, enabling

high-density mounting. Its super-low current consumption makes the S-1702 Series ideal for mobile devices.

Features

Regulator block

• Output voltage:

1.5 V to 5.5 V, selectable in 0.05 V step

• High-accuracy output voltage:

±1.0%

• Super-low current consumption:

Current consumption of regulator block: 9

μA typ., 16 μA max.

• High peak current capability:

*1

• Built-in on/off discharge circuit:

Longer battery life, discharges output load instantaneously

• High ripple rejection:

70 dB typ. (1.0 kHz)

• Built-in overcurrent protector:

Limits overcurrent of output transistor

Detector block

• Output voltage:

1.3 V to 5.2 V, selectable in 0.05 V step

• Built-in high-accuracy voltage detector: ±1.0%

Monitoring output/input or monitoring external input by option

(detector output)

• External reset input:

Forcible assertion of detector output by external reset pin (RESX) input

Overall

• Correlation temperature gradient in the regulator and the detector blocks

• Super-low current consumption:

During operation

• Operation temperature range:

Ta =

−40°C to +85°C

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

*2. Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins

*3. Refer to “ Product Name Structure” for details.

Applications

• Wireless power supply circuit block for cellular phone

• Power supply circuit block for health care product

• Power supply circuit block for various mobile devices

Package

• SNT-6A