Vin5V

L14.7µH

C1

4.7 F

m

C3

33 pF

R1

437kW

Cs

47nF

R3

100 Ω

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

FSW

SW

OUT

PGND

EN

GND

L

VIN

SS

FB

TOP VIEW

10-PIN3mmx3mmx1mmQFN

Thermal

Pad

TPS61080

TPS61081

www.ti.com

SLVS644D – FEBRUARY 2006 – REVISED APRIL 2013

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

Check for Samples: TPS61080, TPS61081

1

FEATURES

DESCRIPTION

2

•

2.5-V to 6-V Input Voltage Range

The TPS61080/1 is a 1.2MHz/600kHz fixed frequency

•

Up to 27-V Output Voltage

boost regulator designed for high integration, which

•

0.5-A Integrated Switch (TPS61080)

integrates a power switch, an input/output isolation

1.3-A Integrated Switch (TPS61081)

switch and a power diode. When a short circuit

condition is detected, the isolation switch opens up to

•

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

disconnect the output from the input. As a result, the

(TYP)

IC protects itself and the input source from any pin,

•

Integrated Power Diode

except VIN, from being shorted to ground. The

•

1.2-MHz/600-kHz Selectable Fixed Switching

isolation switch also disconnects the output from input

Frequency

during shutdown to prevent any leakage current.

Other provisions for protection include 0.5A/1.3A

•

Input to Output Isolation

peak-to-peak over current protection, programmable

•

Short-Circuit Protection

soft start (SS), over voltage protection (OVP), thermal

•

Programmable Soft Start

shutdown and 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

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

•

10-Pin 3 mm×3 mm QFN Package

TPS61080/1 can provide the supply voltages of

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

APPLICATIONS

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

applications.

Converter

•

White LED Backlight for Media Form Factor

ORDERING INFORMATION

Display

OVERCURRENT

PACKAGE

PACKAGE

•

OLED Power Supply

LIMIT

MARKING

•

xDSL Applications

0.5A(min)

TPS61080DRCR

BCN

•

TFT-LCD Bias Supply

1.3A(min)

TPS61081DRCR

BCO

–40°C

to 85°C

0.5A(min)

TPS61080DRCT

BCN

•

White LED Flash Light

1.3A(min)

TPS61081DRCT

BCO

TYPICAL APPLICATION

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

Converter

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

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, 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.