1 Features

• 2.3-V to 6.0-V Input Voltage Range

• 18.5-V Boost Converter With 2.0-A Switch Current high•

1.2-MHz Switching Frequency

• Power Save Mode for Improved Efficiency at Low-

Output Power or Forced PWM

• Adjustable Soft-Start

• Thermal Shutdown

• Undervoltage Lockout

• 10-Pin VSON Package

2 Applications

• Handheld Devices

• GPS Receivers

• Digital Still Cameras

• Portable Applications

• DSL Modems

• PCMCIA Cards

• TFT LCD Bias Supply

3 Description

The TPS61086 device 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 1.2-MHz,

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 start-up.