RT9074

®

DS9074-01

December 2014

www.richtek.com

1

©

Copyright

2014 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

60V, 30

μμμμμA I

General Description

The RT9074 family are high voltage (60V operation), low

quiescent current low dropout linear regulators capable of

supplying 100mA of output current with a maximum dropout

voltage of 300mV. The low quiescent and shutdown

currents (30

μA operating and 2μA shutdown) are ideal for

use in battery-powered and/or high voltage systems.

Ground current is well-controlled in all conditions, including

dropout.

The RT9074 family operates with any reasonable output

capacitors including 1

μF low-ESR ceramic types and

features excellent line and load transient responses.

Internal protection circuitry includes reverse-battery

protection, current limiting, thermal shutdown, and reverse

current protection. Output voltage accuracy is

±3% over

the entire line and load range.

These devices are available in 3 fixed-output versions

(2.5V, 3.3V, 5V) as well as a version that supports an

adjustable output voltage (1.25V to 60V). All versions

come in SOP-8 and MSOP-8 packages with an exposed

pad for high power dissipation. The fixed output versions

are also available packaged in SOT-223.

Features

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Wide Input Voltage Range : 4.5V to 60V

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Low Quiescent Current : 30

μμμμμA Operating and 2μμμμμA

Shutdown

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Low Dropout Voltage : 300mV maximum at

100mA

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Fixed (2.5V, 3.3V, 5V) and adjustable (1.25V to 60V)

versions

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±±±±±3% Output Tolerance Over Line and Load

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Stable with 1

μμμμμF Output Capacitor (Aluminum,

Tantalum or Ceramic)

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Inherent Reverse-Current Protection (No diode

needed)

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−−−−−60V Reverse-Battery Protection

Applications

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Low Current, High Voltage Regulators

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Battery Powered Applications

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Telecom and Datacom Applications

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Automotive Application

RT9074 (Adjustable Up to 25V Output)

RT9074-25/33/50

RT9074 (Adjustable Up to 60V Output)

Typical Application Circuit

VIN

GND

VOUT

RT9074

4.5V to 60V

0.18µF

SHDN

1µF

SENSE

2.5V/3.3V/5V

VIN

GND

VOUT

RT9074

4.5V to 60V

0.18µF

SHDN

1µF

SENSE

1.25V to 25V

R1

R2

FB

VIN

GND

VOUT

RT9074

4.5V to 60V

0.18µF

SHDN

1µF

SENSE

1.25V to 60V

R1

R2

FB