HFC0310 Datasheet, PDF (1/17 Pages) Monolithic Power Systems – 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.
HFC0310
Fixed-Frequency
Flyback Controller
FEATURES
• 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
APPLICATIONS
• Power Meters
• Switching Mode Power Supplies
• AC/DC Adapters, Switching Chargers
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
1
6/19/2012
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