S1333 datasheet(1/47 Pages) SII

Part #	S1333

Description	LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION

PDF	47 Pages

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Manufacturer	SII [Seiko Instruments Inc]

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

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S-1333 Series

www.sii-ic.com

LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION

LOW DROPOUT CMOS VOLTAGE REGULATOR

Rev.2.3_00

Seiko Instruments Inc.

1

The S-1333 Series, developed by using the CMOS technology, is a positive voltage regulator IC which has low current

consumption, high ripple-rejection and low dropout voltage.

Even with low current consumption of 25

μA typ., it has high ripple-rejection of 75 dB typ., and a ceramic capacitor of 1.0 μF

or more can be used as the input and output capacitors.

It also has high-accuracy output voltage of

±1.0%.



Features

• Output voltage:

1.0 V to 3.5 V, selectable in 0.05 V step

• Input voltage:

1.5 V to 5.5 V

• Output voltage accuracy:

±1.0% (1.0 V to 1.45 V output product: ±15 mV)

• Dropout voltage:

160 mV typ. (2.8 V output product, IOUT = 100 mA)

• Current consumption:

During operation:

25

μA typ., 38 μA max.

During power-off:

0.1

μA typ., 1.0 μA max.

• Output current:

Possible to output 300 mA (VOUT(S)

≥ 1.3 V, VIN ≥ VOUT(S) + 1.0 V)

*1

• Input and output capacitors:

A ceramic capacitor of 1.0

μF or more can be used.

• Ripple rejection:

75 dB typ. (1.6 V output product, f = 1.0 kHz)

70 dB typ. (2.85 V output product, f = 1.0 kHz)

• Built-in overcurrent protection circuit:

Limits overcurrent of output transistor.

• Built-in thermal shutdown circuit:

Prevents damage caused by heat.

• Built-in ON / OFF circuit:

Ensures long battery life.

• Pull-down resistor is selectable.

• Discharge shunt function is selectable.

• Operation temperature range:

Ta =

−40°C to +85°C

• Lead-free (Sn 100%), halogen-free

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



Applications

• Constant-voltage power supply for portable communication device, digital camera, and digital audio player

• Constant-voltage power supply for battery-powered device

• Constant-voltage power supply for home electric appliance



Packages

• SOT-23-5

• HSNT-4 (1010)

• HSNT-4 (0808)

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