STOD13AM Datasheet, PDF (1/25 Pages) STMicroelectronics – Step-up and inverter converters

STOD13AM
250 mA dual DC-DC converter
for powering AMOLED displays
Datasheet − production data
Features
■ Step-up and inverter converters
■ Operating input voltage range from 2.5 V to
4.5 V
■ Synchronous rectification for both DC-DC
converters
■ Minimum 250 mA output current
■ 4.6 V fixed positive output voltage
■ Programmable negative voltage by S_WIRE from
- 2.4 V to - 5.4 V at 100 mV steps
DFN12L (3 x 3 mm)
■ Typical efficiency: 85%
■ Pulse-skipping mode in light load condition
■ 1.5 MHz PWM mode control switching
frequency
■ TDMA noise high immunity
■ Enable pin for shutdown mode
■ Low quiescent current in shutdown mode
■ Soft-start with inrush current protection
■ Overtemperature protection
■ Temperature range: - 40 °C to 85 °C
■ True-shutdown mode
■ Fast discharge outputs of the circuits after
shutdown
■ Overload protection
■ Short-circuit protection
■ Package DFN12L (3 x 3 mm) 0.6 mm height
Applications
■ Active matrix OLED power supply in portable
devices
■ Cellular phones
■ Camcorders and digital still cameras
■ Multimedia players
Description
The STOD13AM is a dual DC-DC converter for
AMOLED display panels. It integrates a step-up
and an inverting DC-DC converter making it
particularly suitable for battery operated products,
in which the major concern is overall system
efficiency. It works in pulse-skipping mode during
low load conditions and PWM mode at 1.5 MHz
frequency for medium/high load conditions. The
high frequency allows the value and size of
external components to be reduced. The Enable
pin allows the device to be turned off, therefore
reducing the current consumption to less than 1
µA. The negative output voltage can be
programmed by an MCU through a dedicated pin
which implements single-wire protocol. Soft-start
with controlled inrush current limit, thermal
shutdown, and short-circuit protection are
integrated functions of the device.
Table 1. Device summary
Order code
Positive voltage Negative voltage
Package
Packaging
STOD13AMTPUR
4.6 V
- 2.4 V to - 5.4 V DFN12L (3 x 3 mm) 3000 parts per reel
October 2012
This is information on a product in full production.
Doc ID 023747 Rev 1
1/25
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