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

Product

Folder

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TPS61086

SLVSA05B – AUGUST 2009 – REVISED AUGUST 2015

TPS61086 18.5-V PFM – PWM Step-Up DC – DC Converter With 2.0-A Switch

1

1 Features

•

2.3-V to 6.0-V Input Voltage Range

3 Description

The TPS61086 device is a high-frequency, high-

•

18.5-V Boost Converter With 2.0-A Switch Current

efficiency DC-to-DC converter with an integrated 2.0-

•

1.2-MHz Switching Frequency

A, 0.13-

Ω power switch capable of providing an

•

Power Save Mode for Improved Efficiency at Low-

output voltage up to 18.5 V. The implemented boost

Output Power or Forced PWM

converter is based on a fixed frequency of 1.2-MHz,

pulse-width-modulation (PWM) controller that allows

•

Adjustable Soft-Start

the use of small external inductors and capacitors

•

Thermal Shutdown

and provides fast transient response.

•

Undervoltage Lockout

At light-load, the device can operate in Power Save

•

10-Pin VSON Package

Mode

with

pulse-frequency-modulation

(PFM)

to

improve the efficiency while keeping a low-output

2 Applications

voltage ripple. For very noise-sensitive applications,

the device can be forced to PWM Mode operation

•

Handheld Devices

over the entire load range by pulling the MODE pin

•

GPS Receivers

high. The external compensation allows optimizing

•

Digital Still Cameras

the application for specific conditions. A capacitor

•

Portable Applications

connected to the soft-start pin minimizes inrush

current at start-up.

•

DSL Modems

•

PCMCIA Cards

Device Information(1)

•

TFT LCD Bias Supply

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS61086

VSON (10)

3.00 mm × 3.00 mm

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

the end of the data sheet.

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.