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FAN7553, FAN7556, FAN7563D

Table of contents:
Info of FAN7553
Info of FAN7556
Info of FAN7563D

FAN7553, FAN7556, FAN7563D Selling Leads, Datasheet

MFG:FSC Package Cooled:DIP8 D/C:DIP-8

FAN7553, FAN7556, FAN7563D Datasheet download

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Part Number: FAN7553

MFG: FSC

Package Cooled: DIP8

D/C: DIP-8

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FAN7556 General Description

The FAN7556 is a fixed frequency voltage mode PWM controller. It is specially designed for off-line and DC-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 FAN7556 has various protection functions such as an over load protection (OLP), an over current protection(OCP), and an over voltage protection(OVP). The FAN7556 is available in the 8DIP package as well as the 8SOP package.

FAN7556 Maximum Ratings

Parameter	Symbol	Value	Unit
Supply Voltage	V_cc	30	V
Output Current	I_O	±1	A
Input Voltage to FB Pin	V_FB	VSD	V
Input Voltage to IS Pin	V_IS	-0.3 to VOC	V
Power Dissipation at TA <25°C 8-DIP 8-SOP	P_D	0.85 0.62	W
Operating Temperature	T_OPR	-25 to +125	°C
Storage Temperature	T_STG	-55 to +150	°C
Thermal Resistance, Junction-to-Air (Note1) 8-DIP 8-SOP	R_ja	147.1 201.6	°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

FAN7556 Features

• Voltage 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 Current Protection (OCP)
• Over Voltage Protection (OVP)
• Wide Operating Frequency Range (20kHz ~ 500kHz)
• Auto-Restart Function

FAN7556 Typical Application

• Off-Line & DC-DC Converter

FAN7556 Connection Diagram

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