HIP1012A
®
Data Sheet
March 2004
FN4419.6
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.
Features
• HOT SWAP Dual Power Distribution Control for +5V and
+12V or +5V and +3.3V
• Provides Fault Isolation
At turn-on, the gate of each external N-Channel MOSFET is
charged with a 10µA 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.
• 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
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
• Adjustable Turn-On Ramp
current regulation mode. The time-out capacitor, C , starts
TIM
• Protection During Turn-On
charging as the controller enters the time out period. Once
C
charges to a 2V threshold, the N-Channel MOSFETs are
• Two Levels of Current Limit Detection Provide Fast
Response to Varying Fault Conditions
TIM
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.
• Less Than 1µs Response Time to Dead Short
• 3µs Response Time to 200% Current Overshoot
• Pb-Free Package Option
Choosing the voltage selection mode the HIP1012 controls
either +12V/5V or +3.3V/+5V supplies.
• Tape & Reel Packaging with ‘-T’ Part Number Suffix
Ordering Information
Applications
• Redundant Array of Independent Disks (RAID) System
TEMP.
PKG.
PART NUMBER
HIP1012ACB
RANGE (°C)
PACKAGE
14 Ld SOIC
DWG. #
• Power Distribution Control
-0 to 70
-0 to 70
M14.15
HIP1012ACBZA (Note)
14 Ld SOIC( Pb-free) M14.15
• Hot Plug, Hot Swap Components
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
Typical Application Diagram
HIP1012A (SOIC)
C
TOP VIEW
PUMP
R
SENSE
R
LOAD
1
2
3
4
5
6
7
3/12VISEN
3/12VS
3/12VG
14
13
R
12V
HIP1012A
3/12VS 3/12VISEN
GATE
R
ILIM
R
OPTIONAL
ILIM
C
V
C
GATE
12 GND
R
GND
DD
ILIM
3/12VG
R
FILTER
V
DD
MODE/
11
10
9
C
C
V
PUMP
TIM
DD
PWRON1
PWRON2
5VG
C
PUMP
C
M/PON1
PWRON2
5VG
FILTER
POWER ON
INPUTS
TIM
5V OR 3.3V
C
TIM
PGOOD
5VISEN
PGOOD
5ISEN
8
5VS
R
GATE
5V
5VS
C
R
R
GATE
SENSE
LOAD
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.