ActualSize

3mmx3mm

1

FEATURES

APPLICATIONS

DESCRIPTION

IN

EN

SW

FB

MODE

AGND

COMP

SS

1

4

6

8

3

7

2

5

PGND

9

10

SW

Cby

1 F

16V

m

Cin

10 F

16V

m

V

2.5Vto6V

IN

L

3.3 H

m

D

PMEG2010AEH

V

12V

S

R1

156kW

R2

18kW

Cout

2*10 F

25V

m

Rcomp

68kW

Ccomp

820pF

Css

100nF

TPS61086

TPS61086

18.5 V PFM/PWM STEP-UP DC-DC CONVERTER WITH 2.0 A SWITCH

• 2.3 V to 6.0 V Input Voltage Range

• Handheld Devices

• 18.5 V Boost Converter With 2.0 A Switch

Current

• GPS Receiver

• Digital Still Camera

• 1.2 MHz Switching Frequency

• Portable Applications

• Power Save Mode for improved Efficiency at

• DSL Modem

Low Output Power or Forced PWM

• PCMCIA Card

• Adjustable Soft-Start

• TFT LCD Bias Supply

• Thermal Shutdown

• Undervoltage Lockout

• 10-Pin QFN Package

The TPS61086 is a high frequency, high efficiency DC to DC converter with an integrated 2.0 A, 0.13

Ω power

switch capable of providing an output voltage up to 18.5 V. The implemented boost converter is based on a fixed

frequency of 1.2MHz, pulse-width-modulation (PWM) controller that allows the use of small external inductors

and capacitors and provides fast transient response.

At light load, the device can operate in Power Save Mode with pulse-frequency-modulation (PFM) to improve the

efficiency while keeping a low output voltage ripple. For very noise sensitive applications, the device can be

forced to PWM Mode operation over the entire load range by pulling the MODE pin high. The external

compensation allows optimizing the application for specific conditions. A capacitor connected to the soft-start pin

minimizes inrush current at startup.

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, 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.