FSCQ0765RT

Features:

Optimized for Quasi-Resonant Converter (QRC)
Advanced Burst-Mode operation for under 1 W standby
power consumption
Pulse by Pulse Current Limit (5A)
Over load protection (OLP) - Auto restart
Over voltage protection (OVP) - Auto restart
Abnormal Over Current Protection (AOCP) - Latch
Internal Thermal Shutdown (TSD) - Latch
Under Voltage Lock Out (UVLO) with hysteresis
Low Startup Current (typical : 25uA)
Low Operating Current (typical : 4mA)
Internal High Voltage SenseFET
Built-in Soft Start (20ms)
Extended Quasi-resonant Switching for Wide Load Range




Application

CTV
DVD Receiver
Audio Power Supply




Pinout






Specifications

Product	Product status	Eco Status	Pricing*	Package type	Leads	Packing method	Package Drawing	Package Marking Convention**
FSCQ0765RTYDTU	Full Production	RoHS Compliant	$2.45	TO-220F	5	RAIL	TBD	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &E&3 (3-Digit Date Code) Line 2: CQ0765RT

* Fairchild 1,000 piece Budgetary Pricing

** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples

Package marking information for product FSCQ0765RT is available. Click here for more information .

Parameter	Symbol	Value	Unit
Drain-Source (GND) Voltage(1)	VDSS	650	V
Drain-Gate Voltage (R=1M)	VDGR	650	V
Gate-Source (GND) Voltage	VGS	±30	V
Drain Current Pulsed(2)	IDM	15	ADC
Single Pulsed Avalanche Energy(3)	EAS	570	mJ
Continuous Drain Current (Tc = 25	ID	3.8	ADC
Continuous Drain Current (T =100)	ID	2.4	ADC
Supply Voltage	VCC	20	V
Analog Input Voltage Range	Vsync	-0.3 to 13V	V
	VFB	-0.3 to VCC	V
Total Power Dissipation	PD	45	W
Operating Junction Temperature	TJ	+150
Operating Ambient Temperature	TA	-25 to +85
Storage Temperature Range	TSTG	-55 to +150
Thermal Resistance	Rthjc	2.6	/W

Description

A Quasi-Resonant Converter (QRC) typically FSCQ0765RT shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ-Series contains an integrated Pulse Width Modulation (PWM) controller and a SenseFET, and is specifically designed for quasiresonant off-line Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller FSCQ0765RT includes an integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature-compensated precise current sources for a loop compensation, and self protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSCQ-Series can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability. FSCQ0765RT provides a basic platform that is well suited for cost-effective designs of quasi-resonant switching flyback converters.

In general, Quasi-Resonant Converter (QRC) FSCQ0765RT shows lower EMI and higher power conversion efficiency compared to the conventional hard switched converter with a fixed switching frequency. Therefore, it is well suited for applications that are sensitive to the noise, such as color TV and audio. The FSCQ0765RT is an integrated Pulse Width Modulation (PWM) controller and Sense FET specifically designed for Quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller FSCQ0765RT includes integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature compensated precise current sources for a loop compensation and self protection circuitry. Compared with discrete MOSFET and PWM controller solution, it can reduce total cost, component count,size and weight simultaneously increasing efficiency, produc-tivity, and system reliability. FSCQ0765RT is a basic platform well suited for cost effective designs of Quasi resonant switching flyback converters.