MC34653EF Freescale Semiconductor, MC34653EF Datasheet

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MC34653EF

Manufacturer Part Number
MC34653EF
Description
IC CTRLR HOT SWAP NEG V 8-SOIC
Manufacturer
Freescale Semiconductor
Type
Hot-Swap Switchr
Datasheet

Specifications of MC34653EF

Applications
General Purpose
Internal Switch(s)
Yes
Current Limit
1A
Voltage - Supply
36 V ~ 80 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Freescale Semiconductor
Advance Information
* 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.
1.0 A Negative Voltage Hot
Swap Controller
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 34653 manually or through a microprocessor and
safely disconnect the load from the main power line.
signals that can be used to directly enable a power module load.
Undervoltage and overvoltage detection circuitry monitors the input
voltage to check that it is within its operating range. A start-up delay
timer ensures that it is safe to turn on the Power MOSFET and charge
the load capacitor.
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
• Input Voltage Operation Range from - 39 V to - 74 V
• Programmable Overcurrent Limit with Auto Retry
• Programmable Charging Current Limit Independent of Load
• Start-Up and Retry Delay Timer
• Overvoltage and Undervoltage Detection
• Active High and Low Power Good Output Signals
• Thermal Shutdown
• Pb-Free Packaging Designated by Suffix Code EF
The 34653 is a highly integrated - 48 V hot swap controller with an
The 34653 has active high and active low power good output
A two-level current limit approach to controlling the inrush current
Package
Capacitor
(Backplane)
System
Supply
Power
Optional
External
Components
-48 V
GND
Figure 1. 34653 Simplified Application Diagram
DISABLE
VPWR
VIN
ILIM
34653
VOUT
ICHG
PG
PG
MCZ34653EF/ R2
MC34653EF/ R2
Application
Dependent
Device
Load
ORDERING INFORMATION
Optional
External
Components
EF SUFFIX (Pb-Free)
98ASB42564B
Document Number: MC34653
HOT SWAP
- 40°C to 85°C
8-PIN SOICN
Temperature
34653
Range (T
A
)
Rev. 8.0, 2/2007
Package
8 SOICN

Related parts for MC34653EF

MC34653EF Summary of contents

Page 1

... Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2007. All rights reserved. Document Number: MC34653 34653 HOT SWAP EF SUFFIX (Pb-Free) 98ASB42564B 8-PIN SOICN ORDERING INFORMATION Temperature Device Range (T MCZ34653EF 40°C to 85°C MC34653EF/ R2 34653 DISABLE Application PG Dependent VPWR PG VOUT Load VIN ICHG Optional ILIM ...

Page 2

... ICHG VIN Figure 2. 34653 Simplified Internal Block Diagram 34653 2 INTERNAL BLOCK DIAGRAM Fixed Oscillator - UVLO 1 Logic - Thermal Shutdown Programmable Current Limit Gate Control Driver Sensor MOSFET Power MOSFET PG PG VIN VOUT Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 3

... VIN Negative Supply Voltage Input 5 VPWR Positive Supply Voltage Input 6 DISABLE Disable Input Control 7 ILIM Current Limit Control 8 ICHG Charging Current Limit Control Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS 1 PG ICHG ILIM 7 VOUT 3 DISABLE 6 VIN 4 5 VPWR Figure 3. 8-SOICN Pin Connections FUNCTIONAL PIN DESCRIPTION This is an active high power good output signal ...

Page 4

... Value Unit 85 V (1) mJ Varies 1 0 5.5 IN PWR 5 0.3 V Internally Limited A V ± 2000 ± 200 ° 150 ° 160 °C Note 6 °C/W 167 115 = 1500 Ω), ESD2 testing is performed in ZAP Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 5

... I •Normal Mode •Overcurrent Mode 539 μA + 612 μ 539 μA + 240 μ •Disable Mode 12. Referenced to VPWR. Analog Integrated Circuit Device Data Freescale Semiconductor and - 40°C T 85°C. All voltages are referenced to VIN unless ≤ ≤ ≤ ≤ PWR A Symbol ...

Page 6

... A 12 — % — — 3.1 — V 129 — A kΩ 8.0 — μA 335 — kΩ/A V — 0.5 — 10 μA mA — 7.0 — 50 μA 144 — mΩ ° 160 — C ° 25 — C Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 7

... Power Good Output Delay Time, from Power MOSFET Enhancement to PG and Asserted PG FAULT TIMER Start-Up and Retry Delay Timer Default Notes 14. Referenced to VPWR. 15. Referenced to VIN. Analog Integrated Circuit Device Data Freescale Semiconductor and - 40°C T 85°C. All voltages are referenced to VIN unless ≤ ≤ ≤ ≤ PWR A Symbol t ...

Page 8

... The device is in overvoltage or undervoltage mode for more than 1.0 ms. • Load current exceeded the overcurrent limit for more than 3.0 ms. This pin is referenced to VIN. Figure 5). The 34653 provides electronic circuit breakers Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 9

... POSITIVE SUPPLY VOLTAGE INPUT (VPWR) The VPWR pin is the most-positive power supply input. The load connects between the VPWR and VOUT pins. Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION DISABLE INPUT CONTROL (DISABLE) The DISABLE pin is used to easily disconnect or connect the load from the main power line by disabling or enabling the 34653 ...

Page 10

... This prevents the input voltage from drooping due to current steps acting on the input line inductance, and that in turn prevents a premature activation of the UV detection circuit (between Points A and B in CHG Figure 7). is intended to limit the CHG is to prevent transient CHG Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 11

... Figure 8. Full Power MOSFET Turn-On and Current Spike Associated with It. End of Charging Process Analog Integrated Circuit Device Data Freescale Semiconductor NORMAL MODE If one of the start-up conditions (list on any time from the start of the Power MOSFET enhancement ...

Page 12

... When the board is removed, its power ramps down. As soon as the 34653’s input voltage reaches the undervoltage turn-off threshold, the undervoltage detection circuit activates and the Power MOSFET turns off for having violated one of 10. Applying a the start-up conditions (list on page 10). Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 13

... PWR UV(ON) Filter = 1.0 ms Filter = 1.0 ms Undervoltage MOSFET → OFF < V PWR UVLOF Filter = 1.0 ms Analog Integrated Circuit Device Data Freescale Semiconductor STATE MACHINE Start-Up Conditions N ≤ 10 • Thermal Shutdown < 160°C Charging Mode • DISABLE = • V < V PWR OV(OFF) • V > ...

Page 14

... Then a new start-up sequence initiates as described on page 10. The overvoltage detection circuit is also equipped with a 2.0 V hysteresis. The waveforms for an overvoltage fault are shown in Figure 16. Figure 16. Overvoltage Fault Analog Integrated Circuit Device Data Freescale Semiconductor page 10) ...

Page 15

... For example: T (max) = 55° 111 °C/W for a four-layer board θJA = 0.251 Ω at high temperatures R DS(ON) Analog Integrated Circuit Device Data Freescale Semiconductor Then (LOAD (LOAD the overcurrent limit is 1.0 A, then the maximum junction temperature is 82.86 °C, which is well below the thermal shutdown temperature that is allowed ...

Page 16

... Analog Integrated Circuit Device Data Symbol Value Unit °C/W R 167 θ JA °C/W R 115 θ JMA °C/W – 145 °C/W – 143 °C/W – 111 °C/W – 107 °C/W – 107 °C θ JB °C θ JC °C/W Ψ Freescale Semiconductor ...

Page 17

... Overcurrent Limit and the Charging Current Limit using external components connected to the device. shows the 34653 with the required external components that allow access to all programmable features in the device. Analog Integrated Circuit Device Data Freescale Semiconductor TYPICAL APPLICATIONS Figures 18 GND -48 V Figure 19 ...

Page 18

... CHG is to prevent transient CHG Value ICHG ) between the ICHG and VIN pins, ICHG for different values ICHG versus ICHG CHG resistor we use the ICHG (kΩ) + 1.4 kΩ] / 335 ICHG I (A) - 1.4 kΩ * CHG Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 19

... I (A) ICHG (A) CHG Figure 20. External Resistor (R ICHG Charging Current Limit Value (I Analog Integrated Circuit Device Data Freescale Semiconductor Values Choosing the External Capacitor C CHG The user can also change the charging current rise time by adding a capacitor (C as shown in Figure time ranges between 1.0 ms (default value) and a recommended maximum ...

Page 20

... I (A) ILIM (A) LIM ) Value Versus ILIM Current Limit Value (I ) LIM paragraph above. Analog Integrated Circuit Device Data Freescale Semiconductor 1.4 ...

Page 21

... Power MOSFET capability of about 3500 mJ result to this analysis the 33652 is expected to exceedingly meet all the energy capability requirements for the possible capacitive loads. Analog Integrated Circuit Device Data Freescale Semiconductor TYPICAL APPLICATIONS 3500 3000 Estimated for Area =1.7 mm 400 μ ...

Page 22

... Important For the most current revision of the package, visit drawing number below. 34653 22 PACKAGING PACKAGE DIMENSIONS www.freescale.com and perform a keyword search on the “98A” EF SUFFIX (Pb-Free) 8-PIN SOIC NARROW BODY PLASTIC PACKAGE 98ASB42564B ISSUE U Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 23

... Go to www.freescale.com, search by part number [e.g. remove prefixes/suffixes and enter the core ID to view all orderable parts. (i.e. MC33xxxD enter 33xxx), and review parametrics. on page 4. Analog Integrated Circuit Device Data Freescale Semiconductor REVISION HISTORY PIN CONNECTIONS on page 3 PACKAGE DIMENSIONS on page 22 4. ...

Page 24

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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