AP5727 Datasheet, PDF (1/2 Pages) Diodes Incorporated – Boost converter for the bias voltage of small size OLED and LCD displays

Issue Number | 001
September 2009
New Product
Announcement
AP5727
Boost converter for the bias voltage
of small size OLED and LCD displays
The AP5727 is a high
efficiency PWM boost
DC/DC converters
(integrated switch)
designed to generate bias
voltages for small OLED and
TFT-LCD display screens.
The device can generate up
to 30V from a Li-Ion cell.
AP5727 switches at 1.2MHz
allowing use of tiny external
components.
Internal compensation,
built-in soft-start and
integrated switch reduce
the component count, PCB
area and cost.
The AP5727 has a 1.25V
feedback voltage and is
available in SOT23-5,
making it compatible with
industry standard boost
converter used for bias
voltage generation.
Diodes Advantage
High Efficiency: 84% Typical
Longer battery life
Fast 1.2MHz Switching Frequency
Smaller inductor and capacitor size
Current limit and UVLO protections
Extra protection for safe operation
Built-in Soft-Start function
Extra protection for safe operation – reduces inrush current at start up
Thermal shutdown
Extra protection for safe operation
Applications
Small size TFT-LCD
Bias power supply
OLED bias supply
for clamshell
mobile phone
sub- display
RF amplifier bias
voltage
www.diodes.com