MIC5013
Micrel, Inc.
MIC5013
Protected High- or Low-Side MOSFET Driver
General Description
Features
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.
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Typical Application
Ordering Information
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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
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Lamp drivers
Relay and solenoid drivers
Heater switching
Power bus switching
Motion control
Part Number
Temperature
Range
Standard
MIC5013BN
Control Input
10µF
MIC5013YN
–40ºC to +85ºC
8-pin Plastic
DIP
8-pin SOIC
+
Fault 8
2 Thresh
V+ 7
20kΩ 3
Sense Gate 6
RTH
Package
MIC5013BM MIC5013YM –40ºC to +85ºC
+
V =24V
MIC5013
Pb-Free
1 Input
R =
S
4 Source Gnd 5
SR(V
TR I P
+100mV)
R I L – (V
TR I P
IRCZ44
(S=2590,
R=11mΩ)
SENSE
R
SOURCE
S
43Ω
KEL VIN
R1=
+100mV)
V+S R RS
100mV (SR+ R S)
R TH =
2200
V
–1000
TR I P
LOAD
For this example:
I =30A (trip current)
R1
4.3kΩ
L
V
TR I P
=100mV
Figure 1. High-Side Driver with
Current-Sensing MOSFET
Protected under one or more of the following Micrel patents:
patent #4,951,101; patent #4,914,546
Note: The MIC5013 is ESD sensitive.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2005
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MIC5013
