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MIC5014_05 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Low-Cost High- or Low-Side MOSFET Driver | |||
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MIC5014/5015
MIC5014/5015
Micrel, Inc.
Low-Cost High- or Low-Side MOSFET Driver
General Description
MIC5014 and MIC5015 MOSFET drivers are designed for
gate control of N-channel, enhancement-mode, power
MOSFETs used as high-side or low-side switches.
The MIC5014/5 can sustain an on-state output indefinitely.
The MIC5014/5 operates from a 2.75V to 30V supply. In high-
side configurations, the driver can control MOSFETs that
switch loads of up to 30V. In low-side configurations, with
separate supplies, the maximum switched voltage is limited
only by the MOSFET.
The MIC5014/5 has a TTL compatible control input.
The MIC5014 is noninverting while the MIC5015 is inverting.
The MIC5014/5 features an internal charge pump that can
sustain a gate voltage greater than the available supply
voltage. The driver is capable of turning on a logic-level
MOSFET from a 2.75V supply or a standard MOSFET from a
5V supply. The gate-to-source output voltage is internally
limited to approximately 15V.
The MIC5014/5 is protected against automotive load dump,
reversed battery, and inductive load spikes of â20V.
The driverâs overvoltage shutdown feature turns off the exter-
nal MOSFET at approximately 35V to protect the load against
power supply excursions.
The MIC5014 is an improved pin-for-pin compatible replace-
ment in many MIC5011 applications.
The MIC5014/5 is available in plastic 8-pin DIP and 8-pin
SOIC pacakges.
Features
⢠2.75V to 30V operation
⢠100µA maximum supply current (5V supply)
⢠15µA typical off-state current
⢠Internal charge pump
⢠TTL compatible input
⢠Withstands 60V transient (load dump)
⢠Reverse battery protected to â20V
⢠Inductive spike protected to â20V
⢠Overvoltage shutdown at 35V
⢠Internal 15V gate protection
⢠Minimum external parts
⢠Operates in high-side or low-side configurations
⢠1µA control input pull-off
⢠Inverting and noninverting versions
Applications
⢠Automotive electrical load control
⢠Battery-powered computer power management
⢠Lamp control
⢠Heater control
⢠Motor control
⢠Power bus switching
Typical Application
+3V to +4V
10µF
Control Input
ON
OFF
MIC5014
1 V+
NC 8
2 Input
NC 7
3 Source NC 6
4 Gnd
Gate 5
IRLZ24
Figure 1. 3V âSleep-Modeâ Switch
with a Logic-Level MOSFET
Micrel, Inc. ⢠2180 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
June 2005
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MIC5014/5015
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