Monolithic Power Systems HF01B04

Description

The HF01B00/01/02/03/04 is a flyback regulator with Green Mode Operation. Its high efficiency feature over the entire input/load range meetsthe stringent world-wide energy-saving requirements.

The HF01B00/01/02/03/04 is an integrated current mode controller with a 700V FET. Its valley switching detector ensures minimum Drain-Source voltage switching every cycle, per Quasi-resonant operation. When the output power falls below a given level, the regulator enters the burst mode to lower the stand-by power consumption.

An internal minimum off time limiter prevents the switching frequency from exceeding 150 kHz, which is below the CISPR-22 EMI start limit. Internal 2.4ms soft start prevents the excessive inrush current during start up

The HF01B00/01/02/03/04 provides various protections, such as Thermal Shutdown (TSD), VCC Under Voltage Lockout (UVLO), Over LoadProtection (OLP), Over Voltage Protection (OVP) and so on.

The HF01B00/01/02/03 is available in PDIP8-7B package. And HF01B04 is available in PDIP8-7B and SOIC8-7B packages.

Features

• Internal Integrated 700V MOSFET
• High Level of Integration, Requires Very Few External Components
• Universal Input Voltage (85~265VAC)
• Quasi-Resonant Operation over the Entire Input and Load Range
• Maximum Switching Frequency Limited
• Valley Switching for High Efficiency and Better EMI Performance
• Active Burst Mode for Low Standby Power Consumption
• Internal High-Voltage Current Source for Start-Up
• Internal Soft Start
• Internal 320ns Leading Edge Blanking
• Thermal Shutdown (Auto Restart with Hysteresis)
• VCC Under Voltage Lockout with Hysteresis (UVLO)
• Over Voltage Protection
• Over Load Protection.
• No Load Consumption at 265Vac, HF01B01<80mW

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Typical applications

• Battery charger for consumer and home equipment.
• Low/Medium power AC/DC adapter.
• Small power SMPS for white goods and consumer electronics.
• Standby power supply.

More information

• Datasheet
• IC product information