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MIC5013

Part Number	MIC5013
Manufacturer	Micrel Semiconductor
Description	Protected High- or Low-Side MOSFET Driver
Published	Mar 26, 2005
Detailed Description	MIC5013 Micrel MIC5013 Protected High- or Low-Side MOSFET Driver General Description The MIC5013 is an 8-pin MOSFET d...
Datasheet	MIC5013 PDF File

Overview

MIC5013 Micrel MIC5013 Protected High- or Low-Side MOSFET Driver General Description The MIC5013 is an 8-pin MOSFET driver with over-current shutdown and a fault flag.
It is designed to drive the gate of an N-channel power MOSFET above the supply rail high-side power switch applications.
The MIC5013 is compatible with standard or current-sensing power MOSFETs in both highand low-side driver topologies.
The MIC5013 charges a 1nF load in 60µs typical and protects the MOSFET from over-current conditions.
The current sense trip point is fully programmable and a dynamic threshold allows high in-rush current loads to be started.
A fault pin indicates when the MIC5013 has turned off the FET due to excessive current.
Other members of the Micrel driver family include the MIC5011 minimum parts count driver and MIC5012 dual driver.
Features • • • • • • • • • • 7V to 32V operation Less than 1µA standby current in the “OFF” state Available in small outline SOIC packages Internal charge pump to drive the gate of an N-channel power FET above supply Internal zener clamp for gate protection 60µs typical turn-on time to 50% gate overdrive Programmable over-current sensing Dynamic current threshold for high in-rush loads Fault output pin indicates current faults Implements high- or low-side switches Applications • • • • • Lamp drivers Relay and solenoid drivers Heater switching Power bus switching Motion control Typical Application Ordering Information Part Number MIC5013BN MIC5013BM V+ =24V Temperature Range –40°C to +85°C –40°C to +85°C Package 8-pin Plastic DIP 8-pin SOIC MIC5013 Control Input RTH 20kΩ Fault 8 2 Thresh V+ 7 3 Sense Gate 6 1 Input 4 Source Gnd 5 10µF + R = S SR( V TRIP +100mV) +100mV) R IL – ( V TRIP IRCZ44 (S=2590, R=11mΩ) SENSE R1= V+SRRS 100mV (SR+R S) R SOURCE S R TH = 2200 V TRIP –1000 43Ω KELVIN LOAD R1 4.
3kΩ For this example: I =30A (trip current) L V TRIP =100mV Figure 1.
High-Side Driver with Current-Sensing MOSFET Note: Th...

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