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.