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LPR30 Datasheet LOW DROP VOLTAGE REGULATOR DRIVE FOR EXTERNAL N-CHANNEL POWER MOSFET

Manufacturer: STMicroelectronics

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General Description

The LPR30 is a very Low Dropout Regulator Controller in a single IC solution for very high current low dropout linear voltgage regulator.

It uses an external N-CHANNEL POWER MOSFET as the linear pass element.

The LPR30

Overview

® LPR30 LOW DROP VOLTAGE REGULATOR DRIVE FOR EXTERNAL N-CHANNEL POWER MOSFET s s s s s s s s s VERY LOW DROPOUT POWER MOSFET DRIVER HIGH PRECISION Vref = 2.5V (± 2%) VERY LOW CURRENT DRAIN (TYP.

2mA) REFERENCE OUTPUT CURRENT UP TO 20mA OPERATING SUPPLY VOLTAGE FROM 5V TO 30V MAXIMUM INPUT VOLTAGE ON-GATE PIN (N.

8) UP TO 60V INTERNAL CURRENT LIMIT OPERATIONAL AMPLIFIER OFFSET TRIMMED AT 50mV ± 10mV NO CAPACITOR IS NEEDED FOR STABILITY OF REFERENCE OUTPUT TEMPERATURE RANGE 0 oC TO 70 oC DIP-8 SO-8 s s LOW PARTS COUNT 5V TO 3.

Key Features

  • a dropout voltage as low as the RDS(on) of the May 2000 1/10 LPR30 external Power MOSFET multiplied by the output current. Consequently the output current can be as high as the POWER MOSFET can provide (also using an adeguate heatsink). The V CC of the LPR30 range from 5V to 30V. For very low drop voltage operation,the LPR30 requires an external gate drive supply to provide the control voltage needed to drive the gate of the external POWER MOSFET. The regulator output is constant-current limi.

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