1 Features

1• 2.3-V to 6-V Input Voltage Range

• 18.5-V Boost Converter With 2-A Switch Current

• 650-kHz or 1.2-MHz Selectable Switching

Frequency

• Adjustable Soft Start

• Thermal Shutdown

• Undervoltage Lockout

• 8-Pin VSSOP and TSSOP Packages

2 Applications

• Handheld Devices

• GPS Receiver

• Digital Still Camera

• Portable Applications

• DSL Modem

• PCMCIA Card

• TFT LCD Bias Supply

3 Description

The TPS61085 device is a high-frequency highefficiency

DC-to-DC boost converter with an

integrated 2-A, 0.13-Ω power switch capable of

providing an output voltage up to 18.5 V. The

selectable frequency of 650 kHz or 1.2 MHz allows

the use of small external inductors and capacitors,

and provides fast transient response. The external

compensation allows optimizing the regulator for

application conditions. A capacitor connected to the

specific soft-start pin minimizes inrush current at

start-up.