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FEATURES

DESCRIPTION

APPLICATIONS

TYPICAL APPLICATION

FSW

SW

OUT

PGND

EN

GND

L

VIN

SS

FB

TOP VIEW

10-PIN3mmx3mmx1mmQFN

Thermal

Pad

Vin5V

L14.7µH

C1

4.7 F

m

C3

33 pF

R1

437kW

Cs

47nF

R3

100

R2

49.9kW

4.7 µF

TPS61081

L1: TDKVLCF5020T-4R7N1R7-1

C3:Feedforwardcapacitorforstability

C1:MurataGRM188R60J105K

R3:Noisedecouplingresistor

C2:MurataGRM219R61C475K

Cs:Softstartprogrammingcapacitor

L

VIN

EN

FSW

SS

GND

SW

OUT

FB

PGND

TPS61080

TPS61081

SLVS644B – FEBRUARY 2006 – REVISED JANUARY 2007

HIGH VOLTAGE DC/DC BOOST CONVERTER WITH 0.5-A/1.3-A INTEGRATED SWITCH

• 2.5-V to 6-V Input Voltage Range

The

TPS61080/1

is

a

1.2MHz/600kHz

fixed

frequency

boost

regulator

designed

for

high

• Up to 27-V Output Voltage

integration, which integrates a power switch, an

• 0.5-A Integrated Switch (TPS61080)

input/output isolation switch and a power diode.

1.3-A Integrated Switch (TPS61081)

When a short circuit condition is detected, the

• 12 V/400 mA and 24 V/170 mA From 5-V Input

isolation switch opens up to disconnect the output

(TYP)

from the input. As a result, the IC protects itself and

the input source from any pin, except VIN, from

• Integrated Power Diode

being shorted to ground. The isolation switch also

• 1.2-MHz/600-kHz Selectable Fixed Switching

disconnects the output from input during shutdown to

Frequency

prevent any leakage current. Other provisions for

• Input to Output Isolation

protection

include

0.5A/1.3A

peak-to-peak

over

current protection, programmable soft start (SS),

• Short-Circuit Protection

over voltage protection (OVP), thermal shutdown and

• Programmable Soft Start

under voltage lockout (UVLO).

• Overvoltage Protection

The IC operates from input supplies including single

• Up to 87% Efficiency

Li-ion battery, triple NiMH, and regulated 5V, such as

• 10-Pin 3 mm×3 mm QFN Package

USB output. The output can be boosted up to 27V.

TPS61080/1 can provide the supply voltages of

OLED, TFT-LCD bias, 12V and 24V power rails. The

output of TPS61080/1 can also be configured as a

• 3.3V to 12V, 5V to 12V and 24V Boost

current source to power up to 7 WLED in flash light

Converter

applications.

• White LED Backlight for Media Form Factor

Display

ORDERING INFORMATION

• OLED Power Supply

OVERCURRENT

PACKAGE

PACKAGE

• xDSL Applications

LIMIT

MARKING

• TFT-LCD Bias Supply

0.5A(min)

TPS61080DRCR

BCN

• White LED Flash Light

1.3A(min)

TPS61081DRCR

BCO

–40

°C

to 85

°C

0.5A(min)

TPS61080DRCT

BCN

1.3A(min)

TPS61081DRCT

BCO

Figure 1. 5V to 12V, 250mA Step-Up DC/DC

Converter

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.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2007, 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.