HV100/HV101

Features

33% Smaller than SOT-232

Pass Element is Only External Part

No Sense Resistor required

Auto-adapt* to Pass Element

Short Circuit Protection*

UV & POR Supervisory Circuits

2.5s Auto Retry

±10V to ±72V Input Voltage Range

0.6mA Typical Operating Supply Current

Built in Clamp for AC Path Turn On Glitch

*Patents Pending

Applications

-48V Central Office Switching (line cards)

+48V Server Networks

+48V Storage Area Networks

+48V Peripherals, Routers, Switches

+24V Cellular and Fixed Wireless (bay stations,

line cards)

+24V Industrial Systems

+24V UPS Systems

-48V PBX & ADSL Systems (line cards)

Distributed Power Systems

Powered Ethernet for VoIP

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General Description

The HV100 and the HV101 are 3-pin hotswap controllers

available in the SOT-223 package, which require no external

components other than a pass element. The HV100 and the

HV101 contain many of the features found in hotswap control-

lers with 8 pins or more, and which generally require many

external components. These features include undervoltage (UV)

detection circuits, power on reset (POR) supervisory circuits,

inrush current limiting, short circuit protection, and auto-retry.

In addition, the HV100 and the HV101 use a patent pending

mechanism to sample and adapt to any pass element, resulting

in consistent hotswap profiles without any programming.

The only difference between the HV100 and the HV101 is the

internally set undervoltage (UV) threshold.

Typical Application Circuit and Waveforms

-48V

GND

DC/DC

Converter

+5V

COM

IRF530

400F

GATE

HV100

3-Pin Hotswap, Inrush Current Limiter Controllers

(Negative Supply Rail)