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SMP402 - 20-72 VDC Input Non-isolated DC Output

Description

The SMP402, intended for non-isolated ISDN telecommunications power supply applications, combines a high voltage power MOSFET switch with a switchmode power system controller in a monolithic integrated circuit.

Features

  • include high voltage, low RDS(ON), and low capacitance. Lower capacitance results in a reduction in gate drive power, and also facilitates higher frequency operation. The controller section of the SMP402 contains all the blocks required to drive and control the power stage: start-up preregulator circuit, oscillator, bandgap reference, error amplifier, gate driver and level shift. Protection features include undervoltage lockout, thermal shutdown, and input polarity and level sensing. The SMP402.

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Datasheet Details

Part number SMP402
Manufacturer Power Integrations Inc.
File Size 120.65 KB
Description 20-72 VDC Input Non-isolated DC Output
Datasheet download datasheet SMP402 Datasheet
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    Full PDF Text Transcription

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    SMP402 1-Watt Buck Regulator IC 20-72 VDC Input Non-isolated DC Output Product Highlights Integrated Power Switch and CMOS Controller • Output power > 1 W from 48 VDC input • Adjustable output voltage • Integrated solution minimizes overall size High-voltage, Low-capacitance MOSFET Output • Designed for ISDN T1 telecommunications applications • Low capacitance allows for high frequency operation High-voltage Buck Regulator • Internal pre-regulator self-powers the IC on start-up • Designed for low power consumption • Minimum external parts required Built-In Self-protection Circuits • Undervoltage lockout • Thermal shutdown • Input polarity/level sense SMP402 + 48 VDC - ® + 5 VDC - PI-555A-123091 Figure 1. Typical Application.
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