STOD1412

更新时间： 2024-09-30 03:30:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		转换器
页数	文件大小	规格书
21页	533K
描述
Step-up and inverting DC-DC converter

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STOD1412 数据手册

STOD1412

Step-up and inverting DC-DC converter

Features

■ 2.7 V to 5.5 V input voltage range

■ 120 mA max output current for each converter

■ Output voltages:

– Step-up from 4.3 V to 6.0 V

– Inverting from -8.0 V to -2.0 V

■ Synchronous rectification for both DC-DC

QFN16L (3mm x 3mm)

converters

■ Efficiency:

– 80% I = 10 mA - 30 mA

– 85% I = 30 mA - 120 mA

Description

■ 1.3 MHz PWM mode control

■ Shutdown mode with Enable pin

■ Inrush current protection

■ Adjustable output voltages

■ True shutdown mode

The STOD1412 is a dual DC-DC converter

capable of providing a positive and negative

voltage from a positive input voltage ranging from

2.7 V to 5.5 V. It integrates two complete power

stages, one step-up and one inverting, each of

which need just one inductor, and input and

output capacitor.

■ Less than 1 µA current consumption in

shutdown mode

The STOD1412 works in PWM mode, switching at

a 1.3 MHz frequency, thus reducing the size and

values of external components. An Enable pin

makes it possible to turn off the device to reduce

the quiescent current to less than 1 µA. The

output voltages can be set easily by using two

external resistors for each converter.

■ Over-temperature protection

■ Package: 16 pin - QFN 3X3

■ Temperature range: -40°C to 85°C

Applications

■ Active matrix organic LED power supplies

■ Mobile phones

The device integrates a “soft start” with controlled

inrush current limit, thermal shutdown and short

circuit protection.

■ PDAs

High efficiency and low quiescent current,

■ Camcorders

combined with the small number and tiny size of

external components, make the STOD1412

suitable for battery-operated systems, particularly

for powering Active Matrix OLED display panels.

■ Digital still cameras

Table 1.

Device summary

Order code

Package

Packaging

STOD1412PUR

QFN16L (3x3 mm)

4500 parts per reel

August 2007

Rev. 1

1/21

www.st.com

12 3 4 5 6 7...21

中文翻译

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