FAN7554

Input Voltage :
Duty Cycle (Max) :
Number of Outputs : 1
Maximum Operating Temperature : + 85 C
Switching Frequency : 500 KHz
Mounting Style : Through Hole
Package / Case : DIP-8
Output Current : 1 A
Output Voltage : 30 V


Features:

• Current Mode Control
• Pulse by Pulse Current Limiting
• Low External Components
• Under Voltage Lockout(UVLO): 9V/15V
• Stand-by Current: Typ. 100uA
• Power Saving Mode Current: Typ. 200uA
• Operating Current: Typ. 7mA
• Soft Start
• On/Off Control
• Over Load Protection(OLP)
• Over Voltage Protection(OVP)
• Over Current Protection(OCP)
• Over Current Limit(OCL)
• Operating Frequency up to 500kHz
• 1A Totem-Pole Output Current




Application

• Off-Line & DC-DC Converter




Pinout

Specifications

Parameter	Symbol	Value	Unit
Supply Voltage	Vcc	30	V
Output Current	IO	±1	A
Input Voltage to FB Pin	VFB	-0.3 to VSD	V
Input Voltage to IS Pin	VIS	-0.3 to VOC	V
Power Dissipation at TA < 25°C 8-DIP 8-SOP	PD	0.85 0.42	W
Operating Temperature	TOPR	-25 to +85	°C
Storage Temperature	TSTG	-55 to +150	°C
Thermal Resistance, Junction-to-Air (Note1) 8-DIP 8-SOP	Rja	147.8 291.4	°C/W

Note: 1. Junction -to -air thermal resistance test environments.
-. Pneumatic heat sink fixture.
-. Clamping pressure 60psi through 12mm diameter cylinder.
-. Thermal grease applied between PKG and heat sink fixture

Product	Product status	Eco Status	Pricing*	Package type	Leads	Packing method	Package Drawing	Package Marking Convention**
FAN7554	Full Production	RoHS Compliant	$0.56	DIP	8	RAIL	TBD	N/A
FAN7554DTF	Full Production	RoHS Compliant	$0.56	SOIC	8	TAPE REEL		Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FAN7554

* 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 FAN7554 is available. Click here for more information .

Description

The FAN7554 is a fixed frequency current mode PWM controller. It is specially designed for off-line and DC to DC converter applications with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, an ON/OFF control, a high gain error amplifier, a current sensing comparator, and a high current totem-pole output. The FAN7554 has various protection functions such as an over load protection, an over current protection, and the over voltage protection, which include built-in auto restart circuit. The FAN7554 is available in the 8-DIP package as well as the 8-SOP package.

Parameters:

Technical/Catalog Information	FAN7554
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	1
Package / Case	8-DIP
Packaging	Tube
Duty Cycle	98%
Voltage - Supply	12 V ~ 30 V
Frequency-Max	500kHz
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	FAN7554 FAN7554