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S-1165

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

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S-1165 Series

www.sii-ic.com © Seiko Instruments Inc., 2002-2015

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00

The S-1165 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output voltage, and low current consumption developed based on CMOS technology. A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in overcurrent protection circuit prevents the load current from exceeding the current capacity of the output transistor. An ON/OFF circuit ensures a long battery life, and a small SOT-23-5 package realizes high-density mounting.

 Features

• Output voltage: • Output voltage accuracy: • Dropout voltage: • Current consumption:
• Output current: • Ripple rejection: • Built-in overcurrent protection circuit: • Built-in ON/OFF circuit: • Operation temperature range: • Lead-free, Sn 100%, halogen-free*2

1.5 V to 5.5 V, selectable in 0.1 V step
±1.0% 140 mV typ. (3.0 V output product, IOUT = 200 mA) During operation: 35 μA typ., 65 μA max. During power-off: 0.1 μA typ., 1.0 μA max. Possible to output 200 mA (VIN ≥ VOUT(S) + 1.0 V)*1 70 dB typ. (f = 1.0 kHz)
Limits overcurrent of output transistor.
Ensures long battery life.
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. Refer to “ Product Name Structure” for details.

 Applications
• Constant-voltage power supply for battery-powered device • Constant-voltage power supply for personal communication device • Constant-voltage power supply for home electric/electronic appliance • Constant-voltage power supply for cellular phone

 Package
• SOT-23-5

Seiko Instruments Inc.

1

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

S-1165 Series

Rev.4.1_00

 Block Diagram
VIN

*1
VOUT

Overcurrent protection circuit

ON/OFF

ON/OFF circuit

+ −

Reference voltage circuit

VSS *1. Parasitic diode

Figure 1

2 Seiko Instruments Inc.

HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR

Rev.4.1_00

S-1165 Series

 Product Name Structure
• Users can select the product type, output voltage for the S-1165 Series. Refer to “1. Product name” regarding the contents of product name, “2. Package” regarding the package drawings and “3. Product name list” regarding details of the product name.
1. Product name
S-1165 x xx MC - xxx TF x
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