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FSQ311, FSQ321, FSS101

Table of contents:
Info of FSQ311
Info of FSQ321
Info of FSS101

FSQ311, FSQ321, FSS101 Selling Leads, Datasheet

MFG:Fairchild Semiconductor Category:Integrated Circuits (ICs) Package Cooled:DIP-4 D/C:08+

FSQ311, FSQ321, FSS101 Datasheet download

Five Points

Part Number: FSQ311

Category: Integrated Circuits (ICs)

MFG: Fairchild Semiconductor

Package Cooled: DIP-4

D/C: 08+

Description: IC SWIT PWM GREEN OVP UVLO 8DIP

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FSQ311 Parameters

Technical/Catalog Information	FSQ311
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	1
Package / Case	8-DIP
Packaging	Tube
Duty Cycle	-
Voltage - Supply	20V
Frequency-Max	95.2kHz
Buck	No
Boost	No
Flyback	Yes
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	Yes
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FSQ311 FSQ311

FSQ311 General Description

Compared with discrete MOSFET and PWM controllersolutions, the FSQ-series reduces total cost, componentcount, size and weight; while simultaneously increasingefficiency, productivity, and system reliability. This deviceprovides a basic platform that is well suited for cost-effectivedesigns of valley switching fly-back converters.

FSQ311 Maximum Ratings

Product	Product status	Eco Status	Pricing*	Package type	Leads	Packing method	Package Drawing	Package Marking Convention**
FSQ311	Full Production	RoHS Compliant	$0.67	DIP	8	RAIL		Line 1: Q311 Line 2: &E&E&Z&3
FSQ311L	Full Production	RoHS Compliant	$0.67	SOP	8	RAIL	TBD	Line 1: Q311 Line 2: &E&E&Z&3

* 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 FSQ311 is available. Click here for more information .

FSQ311 Features

·Optimized for Valley Switching (VSC)
·Low EMI through Variable Frequency Control and
   Inherent Frequency Modulation
·High-Efficiency through Minimum Voltage Switching
·Narrow Frequency Variation Range over Wide Load
   and Input Voltage Variation
·Advanced Burst-Mode Operation for Low Standby
   Power Consumption
·Pulse-by-Pulse Current Limit
·Various Protection Functions: Overload Protection
   (OLP), Over-Voltage Protection (OVP), Abnormal
   Over-Current Protection (AOCP), Internal Thermal
   Shutdown (TSD)
·Under-Voltage Lockout (UVLO) with Hysteresis
·Internal Start-up Circuit
·Internal High-Voltage SenseFET (650V)
·Built-in Soft-Start (15ms)

FSQ311 Typical Application

·Power Supply for DVP Player and DVD Recorder, Set-Top Box
·Adapter
·Auxiliary Power Supply for PC, LCD TV, and PDP TV

FSQ311 Connection Diagram

FSQ321 Parameters

Technical/Catalog Information	FSQ321
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Packaging	Tube
Package / Case	8-DIP
Power (Watts)	10W
Voltage - Input	7 ~ 20 V
Voltage - Output	650V
Frequency Range	84 ~ 95.2kHz
Operating Temperature	-40°C ~ 85°C
Output Isolation	Isolated
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FSQ321 FSQ321

FSQ321 General Description

A Valley Switching Converter generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for valley switching operation with minimal external components. The PWM controller 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 loop compensation, and self-protection circuitry.

Compared with discrete MOSFET and PWM controller solutions, the FSQ-series reduces total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for costeffective designs of valley switching fly-back converters.

FSQ321 Maximum Ratings

Symbol	Characteristic		Min	Max.	Unit
V_STR	Vstr Pin Voltage		500		V
V_DS	Drain Pin Voltage		650		V
V_CC	Supply Voltage			20	V
V_FB	Feedback Voltage Range		-0.3	9.0	V
V_sync	Sync Pin Voltage Range		-0.3	9.0	V
I_DM	Drain Current Pulsed(6)	FSQ0365		12	A
		FSQ0265		8	A
		FSQ0165		4	A
		FSQ321/311		1.5	A
E_AS	Single Pulsed Avalanche Energy(7)	FSQ0365		230	mJ
		FSQ0265		140	mJ
		FSQ0165		50	mJ
		FSQ321/311		10	mJ
P_D	Total Power Dissipation			1.5	W
T_J	Recommended Operating Junction Temperature		-40	Internally limited	°C
T_A	Operating Ambient Temperature		-40	85	°C
T_STG	Storage Temperature		-55	150	°C
E_SD	Human Body Model(8)		CLASS1 C
E_SD	Machine Model(8)		CLASS B

Notes:
6. Repetitive rating: Pulse width limited by maximum junction temperature.
7. L=51mH, starting T_J=25°C.
8. Meets JEDEC standards JESD22-A114 and JESD22-A115.

FSQ321 Features

FSQ321 Typical Application

·Power Supply for DVP Player and DVD Recorder, Set-Top Box
·Adapter
·Auxiliary Power Supply for PC, LCD TV, and PDP TV

FSQ321 Connection Diagram

FSS101 Maximum Ratings

Parameter	Symbol	Conditions	Ratings	Unit
Drain-to-Source Voltage	V_DSS		-20	V
Gate-to-Source Voltage	V_GSS		±10	V
Drain Current (DC)	I_D		-5	A
Drain Current (Pulse)	I_DP	PW10s, duty cycle1%	-32	A
Allowable Power Dissipation	P_D	Mounted on a ceramic board (1200mm^2*0.8mm)	1.8	W
Channel Temperature	T_ch		150	°C
Storage Temperature	T_stg		--55 to +150	°C

FSS101 Features

Low ON resistance
Ultrahigh-speed switching
2.5V drive

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