Datasheet > STOD03B

STOD03B

更新时间： 2022-02-26 14:08:04

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意法半导体 - STMICROELECTRONICS		/
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22页	934K
描述
Step-up with LDO and inverter converters

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STOD03B 数据手册

STOD03B

150 mA dual DC-DC converter with LDO

for powering AMOLED displays

Features

■ Step-up with LDO and inverter converters

■ Operating input voltage range from 2.3 V to

4.8 V

■ Synchronous rectification for both DC-DC

converters

■ Minimum 150 mA output current

■ LDO post regulator for 4.6 V fixed positive

output to provide line and load transient

response with minimum output voltage ripple

DFN12L (3 x 3 mm)

■ Programmable negative voltage by S

from

WIRE

- 2.4 V to -5.4 V at 100 mV steps

Description

■ Typical efficiency: 82%

The STOD03B 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 the 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 4.6 V

output is provided by an LDO in cascade with the

step-up converter. This allows a noise and ripple

free positive output for the AMOLED panel to

provide stable picture quality. 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

■ Pulse skipping mode in light load condition

■ 1.5 MHz PWM mode control switching

frequency

■ 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

■ Package DFN (3 x 3) 12 leads 0.6 mm height

Applications

■ Active matrix AMOLED power supply in

portable devices

programmed by an MCU through a dedicated pin

which implements single-wire protocol. Soft-start

with controlled inrush current limit and thermal

shutdown are integrated functions of the device.

■ Cellular phones

■ Camcorders and digital still cameras

■ Multimedia players

Table 1.

Device summary

Order code

Positive voltage

Negative voltage

Package

Packaging

STOD03BTPUR

December 2011

4.6V

- 2.4V to - 5.4V

DFN12L (3 x 3mm)

3000 parts per reel

Doc ID 022613 Rev 1

1/22

www.st.com

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