1

FEATURES

DESCRIPTION

APPLICATIONS

C

IN

2.2 F

m

C

PUMP

0.22 F

m

3.3Vto

4.2V

C

OUT

2.2 F

m

R

LED

GND

Enable

REG71050

REG710-5

LED

LED

R

R

REG710

60mA, 5.0V, Buck/Boost Charge Pump

in ThinSOT-23 and ThinQFN

2

• Wide Input Range: 1.8V to 5.5V

The

REG710

is

a

switched

capacitor

voltage

converter that produces a regulated, low-ripple output

• Automatic Step-Up/Step-Down Operation

voltage from an unregulated input voltage. A wide

• Low Input Current Ripple

input supply voltage of 1.8V to 5.5V makes the

• Low Output Voltage Ripple

REG710 ideal for a variety of battery sources, such

• Minimum Number of External

as single-cell Li-Ion, or two- and three-cell nickel- or

alkaline-based chemistries.

Components—No Inductors

• 1MHz Internal Oscillator Allows Small

The input voltage may vary above and below the

Capacitors

output voltage and the output remains in regulation. It

works

equally

well

for

step-up

or

step-down

• Shutdown Mode

applications

without

the

need

for

an

inductor,

• Thermal and Current Limit Protection

providing low EMI dc/dc conversion.

The

high

• Six Output Voltages Available:

switching

frequency

allows

the

use

of

small

surface-mount capacitors, saving board space and

–

5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V

reducing cost. The REG710 is thermally protected

• Small Packages:

and current limited, protecting the load and the

–

SOT23-6

regulator during fault conditions. Typical ground pin

current (quiescent current) is 65

µA with no load, and

–

TSOT23-6 (REG71055 and REG71050 Only)

less than 1

µA in shutdown mode.

–

TQFN-6 (2

×2×0.8mm; REG71050 Only)

• Evaluation Modules Available:

–

REG710EVM-33, REG710EVM-5

• Smart Card Readers

• SIM Card Supplies

• Cellular Phones

• Portable Communication Devices

• Personal Digital Assistants

• Notebook and Palm-Top Computers

• Modems

• Electronic Games

REG710 Used in White LED Backlight Application

• Handheld Meters

• PCMCIA Cards

• Card Buses

• White LED Drivers

• LCD Displays

• Battery Backup Supplies

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2001–2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.