1 Features

1• Input Voltage Range from 1.8 to 6 V

• Output Voltage of up to 28 V Possible

• Up to 85% Efficiency

• Digitally Adjustable Output Voltage Control

• Disconnects Output From Input During Shutdown

• Switching Frequency up to 1 MHz

• No Load Quiescent Current 40 μA Typical

• Thermal Shutdown Mode

• Shutdown Current 0.1 μA Typical

• Available in Small 3-mm × 3-mm VSON Package

2 Applications

• LCD Bias Supply for Small to Medium LCD

Displays

• OLED Display Power Supply

– PDA, Pocket PC, Smart Phones

– Handheld Devices

– Cellular Phones

3 Description

The TPS61045 device is a high-frequency boost

converter with digitally-programmable output voltage and true shutdown. During shutdown, the output is

disconnected from the input by opening the internal

input switch. This allows a controlled power-up and

power-down sequencing of the display. The output voltage can be increased or decreased in digital

steps by applying a logic signal to the CTRL pin. The

output voltage range, as well as the output voltage

step size, can be programmed with the feedback

divider network. With a high switching frequency of up to 1 MHz, the TPS61045 device allows the use of

small external components, and together, with the

small 8-pin VSON package, a minimum system

solution size is achieved.