SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESETINPUT FUNCTION

S-1702 Series

Seiko Instruments Inc.

2

Block Diagrams

1. S-1702 Series A type to H type

Discharge Shunt Function

by ON / OFF and RESX

Pins

Product

Type

Detector

Monitor

Voltage

Control by

ON / OFF Pin

Control by

RESX Pin

A

B

×

C

×

D

×

×

E

F

×

G

×

H

×

×

Overcurrent

protector

ON/OFF circuit

Reference

voltage circuit

Reference

voltage

circuit

ON / OFF

VIN

RESX

VOUT

VSS

VDOUT

Reset circuit

Delay

circuit

Voltage

detector

Output

circuit

Logic

circuit

Figure 1

2. S-1702 Series J type and K type (external input detection type)

Product

Type

Detector

Monitor

Voltage

Discharge Shunt Function

by ON / OFF Pin

J

External

input

K

External

input

×

Overcurrent

protector

ON/OFF circuit

Reference

voltage

circuit

ON / OFF

VIN

SENSE

VOUT

VSS

VDOUT

Delay

circuit

Voltage

detector

Reset circuit

Logic

circuit

Reference

voltage circuit

Output

circuit

Figure 2