MIC5014-1 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Low-Cost High- or Low-Side MOSFET Driver Final Information

MIC5014/5015
Micrel
MIC5014/5015
Low-Cost High- or Low-Side MOSFET Driver
Final Information
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 –20V. The
driver’s overvoltage shutdown feature turns off the external
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.
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
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 –20V
• Inductive spike protected to –20V
• 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
Ordering Information
Part Number
Noninverting
MIC5014BM
MIC5014BN
Inverting
MIC5015BM
MIC5015BN
Temperature Range
Package
–40°C to +85°C
–40°C to +85°C
8-pin SOIC
8-pin Plastic DIP
–40°C to +85°C
–40°C to +85°C
8-pin SOIC
8-pin Plastic DIP
Figure 1. 3V “Sleep-Mode” Switch
with a Logic-Level MOSFET
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
1997
1
MIC5014/5015