S-1167 Series

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ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION

AND LOW DROPOUT CMOS VOLTAGE REGULATOR

© Seiko Instruments Inc., 2004-2015

Seiko Instruments Inc.

1

The S-1167 Series is a positive voltage regulator with ultra low current consumption, high ripple rejection, low dropout

voltage and high-accuracy output voltage developed based on CMOS technology.

Although current consumption is very small with 9

μA typ., the S-1167 Series realized the 70 dB of high ripple rejection rate.

Besides, a ceramic capacitor of 1.0

μF can be used as the input and output capacitors.

Moreover, dropout voltage is also small since output voltage accuracy realizes

±1.0% of high accuracy, and the low-on-

resistance transistor is built-in. A built-in overcurrent protection circuit prevents that the load current from exceeding the

current capacity of the output transistor. The ON / OFF circuit ensures long battery life.

Two packages, SOT-23-5 and SNT-6A(H) are available.

Compared with the voltage regulators using the conventional CMOS technology, the S-1167 Series is the most suitable for

the portable equipments with ultra low current consumption and corresponding to the small package.



Features

• Output voltage:

1.5 V to 5.5 V, selectable in 0.1 V step

• Input voltage:

2.0 V to 6.5 V

• Output voltage accuracy:

±1.0%

• Dropout voltage:

• Current consumption:

During operation:

9

μA typ., 16 μA max.

During power-off:

0.1

μA typ., 0.9 μA max.

• Output current:

*1

• Input and output capacitors:

A ceramic capacitor of 1.0

μF or more can be used.

• Ripple rejection:

70 dB typ. (3.0 V output product, f = 1.0 kHz)

• Built-in overcurrent protection circuit:

Limits overcurrent of output transistor.

• Built-in ON / OFF circuit:

Ensures long battery life.

• Operation temperature range:

Ta =

−40°C to +85°C

• 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

• Constant-voltage power supply for battery-powered device

• Constant-voltage power supply for cellular phone

• Constant-voltage power supply for portable equipment



Packages

• SOT-23-5

• SNT-6A(H)