MIC5014 Datasheet, PDF (1/9 Pages) Micrel Semiconductor – Low-Cost High- or Low-Side MOSFET Driver

MIC5014/5015
Micrel
MIC5014/5015
Low-Cost High- or Low-Side MOSFET Driver
General Description
Features
MIC5014 and MIC5015 MOSFET drivers are designed for • 2.75V to 30V operation
gate control of N-channel, enhancement-mode, power • 100µA maximum supply current (5V supply)
MOSFETs used as high-side or low-side switches. The • 15µA typical off-state current
MIC5014/5 can sustain an on-state output indefinitely.
• Internal charge pump
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
• 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
MOSFET from a 2.75V supply or a standard MOSFET from a
5V supply. The gate-to-source output voltage is internally
Applications
limited to approximately 15V.
• Automotive electrical load control
The MIC5014/5 is protected against automotive load dump, ^{• Battery-powered computer power management}
reversed battery, and inductive load spikes of –20V. The ^{• Lamp control}
driver’s overvoltage shutdown feature turns off the external ^{• Heater control}
5
MOSFET at approximately 35V to protect the load against ^{• Motor control}
power supply excursions.
• Power bus switching
The MIC5014 is an improved pin-for-pin compatible replace-
ment in many MIC5011 applications.
Ordering Information
The MIC5014/5 is available in plastic 8-pin DIP and 8-pin
SOIC pacakges.
Typical Application
+3V to +4V
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
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 “Sleep-Mode” Switch
with a Logic-Level MOSFET
1997
5-137