1

®

FN4419.6

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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HIP1012A

Dual Power Distribution Controller

The HIP1012A is a HOT SWAP dual supply power distribution

controller. Two external N-Channel MOSFETs are driven to

distribute power while providing load fault isolation.

At turn-on, the gate of each external N-Channel MOSFET is

charged with a 10

µA current source. Capacitors on each

gate (see the Typical Application Diagram), create a

programmable ramp (soft turn-on) to control inrush currents.

A built in charge pump supplies the gate drive for the 12V

supply N-Channel MOSFET switch.

Overcurrent protection is facilitated by two external current

sense resistors. When the current through either resistor

exceeds the user programmed value the controller enters the

charging as the controller enters the time out period. Once

latched off. In the event of a fault at least three times the

current limit level, the N-Channel MOSFET gates are pulled

low immediately before entering time out period. The

controller is reset by a rising edge on either PWRON pin.

Choosing the voltage selection mode the HIP1012 controls

either +12V/5V or +3.3V/+5V supplies.

Features

• HOT SWAP Dual Power Distribution Control for +5V and

+12V or +5V and +3.3V

• Provides Fault Isolation

• Programmable Current Regulation Level

• Programmable Time Out

• Charge Pump Allows the Use of N-Channel MOSFETs

• Power Good and Overcurrent Latch Indicators

• Enhanced Overcurrent Sensitivity Available

• Redundant Power On Controls

• Adjustable Turn-On Ramp

• Protection During Turn-On

• Two Levels of Current Limit Detection Provide Fast

Response to Varying Fault Conditions

• Less Than 1

µs Response Time to Dead Short

•3

µs Response Time to 200% Current Overshoot

• Pb-Free Package Option

• Tape & Reel Packaging with ‘-T’ Part Number Suffix

Applications

• Redundant Array of Independent Disks (RAID) System

• Power Distribution Control

• Hot Plug, Hot Swap Components

Ordering Information

PART NUMBER

TEMP.

RANGE (°C)

PACKAGE

PKG.

DWG. #

HIP1012ACB

-0 to 70

14 Ld SOIC

M14.15

HIP1012ACBZA (Note)

-0 to 70

14 Ld SOIC( Pb-free) M14.15

NOTE: Intersil Pb-free products employ special Pb-free material

sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which is compatible with both SnPb and

Pb-free soldering operations. Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed

the Pb-free requirements of IPC/JEDEC J Std-020B.

Pinout

HIP1012A (SOIC)

TOP VIEW

Typical Application Diagram

8

9

10

11

12

14

13

7

6

5

4

3

2

1

3/12VS

3/12VG

PWRON2

5VG

5VS

3/12VISEN

GND

PGOOD

5VISEN

MODE/

PWRON1

12V

POWER ON

INPUTS

5V

5V OR 3.3V

OPTIONAL

3/12VS

3/12VG

M/PON1

PWRON2

PGOOD

5VG

5VS

3/12VISEN

GND

5ISEN

HIP1012A

Data Sheet

March 2004