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MC34652 Datenblatt(PDF) 1 Page - Freescale Semiconductor, Inc

Teilenummer MC34652
Bauteilbeschribung  2.0 A Negative Voltage Hot Swap Controller with Enhanced Programmability
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Hersteller  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

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Document order number:
MC34652
Rev 6.0, 02/2006
Freescale Semiconductor
Technical Data
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2006. All rights reserved.
2.0 A Negative Voltage Hot
Swap Controller with Enhanced
Programmability
The 34652 is a highly integrated -48 V hot swap controller with an
internal Power MOSFET. It provides the means to safely install and
remove boards from live -48 V backplanes without having to power
down the entire system. It regulates the inrush current, from the
supply to the load’s filter capacitor, to a user-programmable limit,
allowing the system to safely stabilize. A disable function allows the
user to disable the 34652 manually or through a microprocessor and
safely disconnect the load from the main power line.
The 34652 has active high and active low power good output
signals that can be used to directly enable a power module load.
Programmable under- and overvoltage detection circuitry monitors
the input voltage to check that it is within its operating range.
A programmable start-up delay timer ensures that it is safe to turn on
the Power MOSFET and charge the load capacitor.
A two-level current limit approach to controlling the inrush current
and switching on the load limits the peak power dissipation in the
Power MOSFET. Both current limits are user programmable.
Features
• Integrated Power MOSFET and Control IC in a Small Outline
Package
• Input Voltage Operation Range from -15 V to -80 V
• Programmable Overcurrent Limit with Auto Retry
• Programmable Charging Current Limit Independent of Load
Capacitor
• Programmable Start-Up and Retry Delay Timer
• Programmable Overvoltage and Undervoltage Detection
• Active High and Low Power Good Output Signals
• Thermal Shutdown
• Pb-Free Packaging Designated by Suffix Code EF
Figure 1. 34652 Simplified Application Diagram
2.0 A NEGATIVE VOLTAGE
HOT SWAP CONTROLLER WITH
ENHANCED PROGRAMMABILITY
34652
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC34652EF/R2
-40°C to 85°C
16 SOICN
SCALE 2:1
EF SUFFIX (PB-Free)
98ASB42566B
16-TERMINAL SOICN
34652
DISABLE
VPWR
UV
OV
ICHG
ILIM
VIN
VOUT
PG
PG
TIMER
GND
-48 V
System
Power
Supply
(Backplane)
Optional
External
Components
Optional
External
Components
Load
Application
Dependent


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