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S-1142

HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

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Rev.1.0_03

HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR

S-1142 Series

The S-1142 Series, developed based on high-withstand voltage CMOS process, is a positive voltage regulator with a high-withstand voltage, low current consumption, and high output voltage accuracy. The S-1142 Series operates at a high maximum operating voltage of 50 V and a low current consumption of 4.0 µA (typ.). In addition to a built-in low on-resistance transistor which provides a very small dropout voltage and a large output current, this voltage regulator also has a built-in power-off circuit. An overcurrent protector prevents the load current from exceeding the capacitance of the output transistor. A built-in thermal shutdown circuit prevents damage caused by heat. A high heat radiation HSOP-6 package enables high-density mounting.

„ Features
• Output voltage : 2.0 V to 12.0 V, selectable in 0.1 V step • Low equivalent series resistance capacitor : Ceramic capacitor of 0.1 µF or more can be used as the I/O capacitor. • Input voltage : 3.0 V to 50 V • High-accuracy output voltage : ±1.0% (at Tj = +25°C), ±3.0% (Tj = −40°C to +105°C) • Low current consumption : During operation: 4.0 µA typ., 9.0 µA max. (Tj = −40°C to +105°C) During shutdown: 0.1 µA typ., 1.0 µA max. (Tj = −40°C to +105°C) • Output current : 200 mA (at VIN ≥ VOUT(S) + 2.0 V)*1 • Built-in overcurrent protector : limits overcurrent of output transistor • Operation temperature range : −40°C to +105°C (S-1142xxxH only) • Built-in thermal shutdown circuit : prevents damage caused by heat • Built-in power on/off circuit : longer battery life • Small package : HSOP-6 • Lead-free product


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

„ Applications
• Constant-voltage power supply for electrical applications for vehicle interiors (S-1142xxxH only) • Constant-voltage power supplies for home electric appliances

„ Package
Package Name HSOP-6 Drawing Code Package FH006-A Tape FH006-A Reel FH006-A Land FH006-A

Caution Before using this product in medical equipment or automobile equipment including car audio, keyless entry and engine control unit, contact to SII is indispensable.

Seiko Instruments Inc.

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HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1142 Series „ Block Diagram
*1 VIN Overcurrent protector Thermal 


























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