TEA1521T中文资料飞利浦数据手册PDF规格书

FEATURES

· Designed for general purpose supplies up to 50 W

· Integrated power switch:

– TEA1520: 48 W; 650 V

– TEA1521: 24 W; 650 V

– TEA1522: 12 W; 650 V

– TEA1523: 6.5 W; 650 V

– TEA1524: 3.4 W; 650 V.

· Operates from universal AC mains supplies

(80 to 276 V)

· Adjustable frequency for flexible design

· RC oscillator for load insensitive regulation loop

constant

· Valley switching for minimum switch-on loss (not

implemented in TEA152xAJM versions)

· Frequency reduction at low power output makes low

standby power possible (<100 mW)

· Adjustable overcurrent protection

· Under voltage protection

· Temperature protection

· Short circuit winding protection

· Simple application with both primary and secondary

(opto) feedback

· Available in 8-pin DIP, 14-pin SO and 9-pin DBS

packages.

GENERAL DESCRIPTION

The TEA152x family is a Switched Mode Power

Supply (SMPS) controller IC that operates directly from

the rectified universal mains. It is implemented in the high

voltage EZ-HV SOI process, combined with a low voltage

BICMOS process. The device includes a high voltage

power switch and a circuit for start-up directly from the

rectified mains voltage.

A dedicated circuit for valley switching is built in (not

implemented in TEA152xAJM versions), which makes a

very efficient slim-line electronic powerplug concept

possible.

In its most basic version of application, the TEA152x family

acts as a voltage source. Here, no additional secondary

electronics are required. A combined voltage and current

source can be realized with minimum costs for external

components. Implementation of the TEA152x family

renders an efficient and low cost power supply system.

APPLICATIONS

Typical application areas for the STARplugTM are:

· Chargers

· Adapters

· STB (Set Top Box)

· DVD

· CD(R)

· TV/monitor standby supplies

· PC peripherals

· Microcontroller supplies in home applications and small

portable equipment, etc.