HFC0310
Fixed-Frequency
Flyback Controller
The Future of Analog IC Technology
DESCRIPTION
The HFC0310 is a flyback controller with fixed-
frequency operation.
The controller uses peak current mode to
provide excellent transient response and ease
loop compensation. When the output power
falls below a given level, the controller enters
burst mode to lower the stand-by power
consumption.
An external capacitor connected between the
FSET pin and GND programs the HFC0310
switching frequency. Otherwise, the HFC0310
uses a frequency shaping function that greatly
reduces the noise level, and reduces the cost of
the EMI filter.
The HFC0310 provides various protections,
such as thermal shutdown, V
CC
under-voltage
lockout, over-load protection, over-voltage
protection, and short-circuit protection.
The HFC0310 is available in a SOIC8 package.
FEATURES
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Programmable switching frequency up to
600kHz
Frequency shaping (±3.5%)
Current-mode operation
Very low start-up current (12μA)
Very low standby power consumption via
active-burst mode
Internal 350ns leading-edge blanking
Built-in 3ms soft-start function
Internal slope compensation
Built-in PRO pin pull-up (>3.25V) auto-
restart function
Over-temperature protection
V
CC
under-voltage lockout with hysteresis
Over-voltage protection on VCC
Time-based over-load protection
Short-circuit protection
Power Meters
Switching Mode Power Supplies
AC/DC Adapters, Switching Chargers
APPLICATIONS
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
HFC0310 Rev. 1.01
www.MonolithicPower.com
6/19/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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