Datasheet > RS6903

RS6903

更新时间： 2024-06-19 09:35:39

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RS6903 数据手册

RS6903

Unregulated 60mA Charge Pump Voltage Inverter

1 FEATURES

3 DESCRIPTIONS

The RS6903 generates an unregulated negative output

voltage from an input voltage ranging from 1.5V to 5.5V.

Only three external capacitors are required to build a

complete DC/DC charge pump inverter. Additional board

area and component count reduction is achieved by

replacing the Schottky diode that is typically needed for

start-up into load by integrated circuitry. The RS6903 can

deliver a maximum output current of 60mA with a typical

conversion efficiency of greater than 85% over a wide

output current range. The fixed switching frequency is

50kHz.

•

Inverts Input Supply Voltage

Up to 60mA Output Current

Only Three Small 3.3μF Ceramic Capacitors

Needed

•

Input Voltage Range From 1.5 V to 5.5 V

Device Quiescent Current Typical 110μA

Integrated Active Schottky-Diode for Start-

up Into Load

•

Package: SOT23-5

2 APPLICATIONS

•

LCD Bias

The RS6903 is available in SOT23-5 package. It operates

GaAs Bias for RF Power Amps

Sensor Supply in Portable Instruments

Bipolar Amplifier Supply

Medical Instruments

over an ambient temperature range of -40℃ to +85℃.

Device Information ⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Battery-Operated Equipment

RS6903

SOT23-5

2.92mm×1.60mm

(1) For all available packages, see the orderable addendum at the end of

the data sheet.

4 Typical Application Circuit

3.3µF

C(fl y)

CFLY+

CFLY-

Output

-1.5 V to -5.5 V

Max 60 mA

Input

1.5 V to 5.5 V

RS6903

OUT

CIN

COUT

GND

3.3µF

REV A.1

1 / 15

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