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MIC5011 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Minimum Parts High- or Low-Side MOSFET Driver | |||
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MIC5011
Micrel
MIC5011
Minimum Parts High- or Low-Side MOSFET Driver
General Description
The MIC5011 is the âminimum parts countâ member of the
Micrel MIC501X driver family. These ICs are designed to
drive the gate of an N-channel power MOSFET above the
supply rail in high-side power switch applications. The 8-pin
MIC5011 is extremely easy to use, requiring only a power
FET and nominal supply decoupling to implement either a
high- or low-side switch.
The MIC5011 charges a 1nF load in 60µs typical with no
external components. Faster switching is achieved by add-
ing two 1nF charge pump capacitors. Operation down to
4.75V allows the MIC5011 to drive standard MOSFETs in
5V low-side applications by boosting the gate voltage
above the logic supply. In addition, multiple paralleled
MOSFETs can be driven by a single MIC5011 for ultra-high
current applications.
Other members of the Micrel driver family include the
MIC5012 dual driver and MIC5013 protected 8-pin driver.
For new designs, Micrel recommends the pin-compatible
MIC5014 MOSFET driver.
Features
⢠4.75V to 32V operation
⢠Less than 1µA standby current in the âoffâ state
⢠Internal charge pump to drive the gate of an N-channel
power FET above supply
⢠Available in small outline SOIC packages
⢠Internal zener clamp for gate protection
⢠Minimum external parts count
⢠Can be used to boost drive to low-side power FETs
operating on logic supplies
⢠25µs typical turn-on time with optional external
capacitors
⢠Implements high- or low-side drivers
Applications
⢠Lamp drivers
⢠Relay and solenoid drivers
⢠Heater switching
⢠Power bus switching
Typical Applications
ON
+
10µF
Control Input
OFF
MIC5011
1 V+
C1 8
2 Input Com 7
3 Source C2 6
4 Gnd Gate 5
14.4V
IRF531
Ordering Information
Part Number
MIC5011BN
MIC5011BM
Temp. Range
â40°C to +85°C
â40°C to +85°C
Package
8-pin Plastic DIP
8-pin SOIC
#6014
Figure 1. High Side Driver
5V
ON 10µF +
Control Input
OFF
MIC5011
1 V+
C1 8
2 Input Com 7
3 Source C2 6
4 Gnd Gate 5
48V
100W
Heater
IRF530
Note: The MIC5011 is ESD sensitive.
Protected under one or more of the following Micrel patents:
patent #4,951,101; patent #4,914,546
Figure 2. Low Side Driver
Micrel, Inc. ⢠1849 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 944-0970 ⢠http://www.micrel.com
July 2000
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MIC5011
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