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FAN302HLMY_F117 fiches techniques PDF

Fairchild Semiconductor - PWM Controller

Numéro de référence FAN302HLMY_F117
Description PWM Controller
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FAN302HLMY_F117 fiche technique
June 2012
FAN302HLMY_F117
PWM Controller for Low Standby Power Battery-
Charger Applications — mWSaver™ Technology
Features
mWSaver™ Technology Provides Industry’s
Best-in-Class Standby Power
- Achieves <10mW Below Energy Star’s 5-Star
Level: <30mW
- Proprietary 500V High-Voltage JFET Startup
Reduces Startup Resistor Loss
- Low Operation Current in Burst Mode:
350µA Maximum
Constant-Current (CC) Control without Secondary-
Feedback Circuitry
Fixed PWM Frequency at 85kHz with Frequency
Hopping to Reduce EMI
High-Voltage Startup
Low Operating Current: 3.5mA
Peak-Current-Mode Control with Slope
Compensation
Cycle-by-Cycle Current Limiting
VDD Over-Voltage Protection (Auto-Restart)
VS Over-Voltage Protection (Latch Mode)
VDD Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 15V
Fixed Over-Temperature Protection (Latch Mode)
Available in an 8-Lead SOIC Package
Applications
Battery Chargers for Cellular Phones, Cordless
Phones, PDAs, Digital Cameras, and Power Tools
Replaces Linear Regulators and RCC SMPS
Ordering Information
Part Number
Operating
Temperature Range
FAN302HLMY_F117
-40°C to +105°C
Description
The FAN302HLMY_F117 advanced PWM controller
significantly simplifies isolated power supply design that
requires CC regulation of the output. The output current
is precisely estimated with information in the primary
side of the transformer and controlled with an internal
compensation circuit. This removes the output current
sensing loss and eliminates all external Control Circuitry
(CC). The Green-Mode function, with an extremely low
operating current (200µA) in Burst Mode, maximizes the
light-load efficiency, enabling conformance to worldwide
Standby Mode efficiency guidelines.
Integrated protections include two-level pulse-by-pulse
current limit, Over-Voltage Protection (OVP), brownout
protection, and Over-Temperature Protection (OTP).
Compared with a conventional approach using an
external control circuit in the secondary side for CC
regulation, the FAN302HLMY_F117 can reduce total
cost, component count, size, and weight; while
simultaneously increasing efficiency, productivity, and
system reliability.
VO Maximum
Typical
Minimum
IO
Figure 1. Typical Output V-I Characteristic
Package
8-Lead, Small Outline Package (SOIC),
JEDEC MS-012, .150-Inch Narrow Body
Packing
Method
Tape & Reel
© 2012 Fairchild Semiconductor Corporation
FAN302HLMY_F117 • Rev. 1.0.1
www.fairchildsemi.com

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