http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Freescale Semiconductor Electronic Components Datasheet

MC34652 Datasheet

Negative Voltage Hot Swap Controller

No Preview Available !

MC34652 pdf
www.DFaretaeSshceeatl4eUS.ceommiconductor
Advance Information
Document Number: MC34652
Rev. 8.0, 2/2007
2.0 A Negative Voltage Hot
Swap Controller with Enhanced
Programmability
34652
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
HOT SWAP
SCALE 2:1
EF SUFFIX (PB-Free)
98ASB42566B
16-PIN SOICN
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC34652EF/ R2
MCZ34652EF/ R2
-40°C to 85°C
16 SOICN
34652
GND
System
Power
Supply
(Backplane)
DISABLE
VPWR
UV
OV
PG
PG
VOUT
Application
Dependent
Load
-48 V VIN
Optional
External
Components
ICHG
ILIM
TIMER
Optional
External
Components
Figure 1. 34652 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.


Freescale Semiconductor Electronic Components Datasheet

MC34652 Datasheet

Negative Voltage Hot Swap Controller

No Preview Available !

MC34652 pdf
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
DISABLE
VPWR
Referenced VPWR
Logic
Fixed
Oscillator
Adjustable Oscillator
and
Startup Delay Timer
Timer
and
External
Resistors
Detection
TIMER
UV
OV
3.1 V
ILIM External
Resistors
8.0 µA Detection
ICHG
-
1.3 V +
-
1.3 V +
+
1.3 V -
UVLO
UV
OV
Logic
Thermal
Shutdown
Programmable
Current Limit
Sensor MOSFET
Gate Control
Driver
VIN
PG
PG
Power MOSFET
VIN
Figure 2. 34652 Simplified Internal Block Diagram
VOUT
34652
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number MC34652
Description Negative Voltage Hot Swap Controller
Maker Freescale Semiconductor
Total Page 26 Pages
PDF Download
MC34652 pdf
Download PDF File
MC34652 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 MC34652 Negative Voltage Hot Swap Controller Freescale Semiconductor
Freescale Semiconductor
MC34652 pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components