L6574D

Product :
Supply Voltage - Max :
Maximum Power Dissipation :
Mounting Style : SMD/SMT
Maximum Operating Temperature : + 125 C
Packaging : Tube
Supply Voltage - Min : 10 V
Package / Case : SO-16
Fall Time : 80 ns
Rise Time : 120 ns
Supply Current : 10 mA
Type : CFL/TL Ballast Driver Preheat and Dimming


Features:

·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


Pinout




Specifications

Symbol	Parameter	Value	Unit
IS	Supply Current (*)	25	mA
VLVG	Low Side Output	-0.3 to Vs +0.3	V
VOUT	High Side Reference	-1 to VBOOT -18	V
VHVG	High Side Output	-1 to VBOOT	V
VBOOT	Floating Supply Voltage	-1 to 618	V
dVBOOT/dt	VBOOT pin Slew rate (repetitive)	±50	V/ns
dVOUT/dt	OUT pin Slew Rate (repetitive)	±50	V/ns
Vir	Forced Input Voltage (pins Ring, Rpre)	-0.3 to 5	V
Vic	Forced Input Voltage (pins Cpre, Cf)	-0.3 to 5	V
VEN1, VEN2	Enable Input Voltage	-0.3 to 5	V
IEN1, IEN2	Enable Input Current	±3	mA
Vopc	Sense Op Amp Common Mode Range	-0.3 to 5	V
Vopd	Sense Op Amp Differential Mode Range	±5	V
Vopo	Sense Op Amp Output Voltage (forced)	4.6	V
Tstg, Tj	Storage Temperature	-40 to +150	°C
Tamb	Ambient Temperature	-40 to +125	°C

(*) The device has an internal Clamping Zener between GND and the VCC pin, it must not be supplied by a Low Impedance Voltage Source.

Note: ESD immunity for pins 14, 15 and 16 is guaranteed up to 900V (Human Body Model)


Description

In order to ensure voltage ratings in excess of 600V, the L6574 is manufactured with BCD OFF LINE technology, which makes L6574D well suited for lamp ballast applications.

The L6574D is intended to drive two power MOSFETS, 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 preheat 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 L6574D well suited for low cost applications where few additional components are needed to build a high performance ballast.

Parameters:

Technical/Catalog Information	L6574D
Vendor	STMicroelectronics
Category	Integrated Circuits (ICs)
Package / Case	16-SOIC (3.9mm Width)
Packaging	Tube
Voltage - Supply	10 V ~ 15.6 V
Type	CCFL Driver
Current - Supply	2mA
Current - Output	450mA
Frequency	60 ~ 120 kHz
Operating Temperature	-40°C ~ 125°C
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	L6574D L6574D