DESCRIPTION

In order to ensure voltage ratings in excess of 600V, the L6574 is manufactured with BCD OFF LINE technology, which makes it well suited for lamp ballast applications.

The device is intended to drive two power MOS FETS, in the classical half bridge topology, ensuring all the features needed to drive and properly control a fluorescent bulb.

A dedicated timing section in the L6574 allows the user set the necessary parameters for proper pre heat and ignition of the lamp.

Also, an OP AMP is available to implement closed loop control of the lamp current during normal lamp burning.

An integrated bootstrap section, eliminating the normally required bootstrap diode and the zener clamping on Vs, makes the L6574 well suited for low cost applications where few additional components are needed to build a high performance ballast.

■ HIGH VOLTAGE RAIL UP TO 600V

■ dV/dt IMMUNITY ± 50 V/ns IN FULL TEMPERATURE RANGE

■ DRIVER CURRENT CAPABILITY:

250mA SOURCE

450mA SINK

■ SWITCHING TIMES 80/40ns RISE/FALL

■ WITH 1nF LOAD

■ CMOS SHUT DOWN INPUT

■ UNDER VOLTAGE LOCK OUT

■ PREHEAT AND FREQUENCY SHIFTING TIMING

■ SENSE OP AMP FOR CLOSED LOOP CONTROL OR PROTECTION FEATURES

■ HIGH ACCURACY CURRENT CONTROLLED OSCILLATOR

■ INTEGRATED BOOTSTRAP DIODE

■ CLAMPING ON VS.

■ SO16, DIP 16 PACKAGES

L6574属于集成电路（IC） > 照明，镇流器控制器。意法半导体（ST）集团制造生产的L6574照明，镇流器控制器此产品族中的产品可用于实现控制和调节功能。对于日光灯、电致发光灯和 HID 灯等非 LED 照明工具的正常工作，这些功能很有必要或十分有用。既定器件所具备的特定功能集因预期用途各异，并且所供应的产品可能包括相应资源以直接控制驱动负载的电源，也可能不包括这些资源。