MIC5012 Datasheet, PDF (1/9 Pages) Micrel Semiconductor – Dual High- or Low-Side MOSFET Driver Not Recommended for New Designs

MIC5012
Micrel
MIC5012
Dual High- or Low-Side MOSFET Driver
Not Recommended for New Designs
General Description
The MIC5012 is the dual 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 14-pin MIC5012 is
extremely easy to use, requiring only a power FET and
nominal supply decoupling to implement either a high- or
low-side switch.
The MIC5012 charges a 1nF load in 60µs typical. Operation
down to 4.75V allows the MIC5012 to drive standard
MOSFETs in 5V low-side applications by boosting the gate
voltage above the logic supply. In addition, multiple, paral-
leled MOSFETs can be driven by a single MIC5012 for ultra-
high current applications.
Other members of the Micrel driver family include the
MIC5010 full-featured driver, MIC5011 minimum parts count
driver, and MIC5013 protected 8-pin driver.
For new designs, Micrel recommends the pin-compatible
MIC5016 dual MOSFET driver.
Features
• 4.75V to 32V operation
• 2 independent drivers; implements high and low side
drivers
• Less than 1µA standby current in the “off” state per
channel
• 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
• Minimum external parts count
• Can be used to boost drive to low-side power FETs
operating on logic supplies
• Independent supply pins for half-bridge applications
Applications
• Lamp drivers
• Motion Control
• Heater switching
• Power bus switching
• Half or full H-bridge drivers
Typical Applications
ON
+
10µF
Control Input
OFF
1/2 MIC5012
V+
Input
Source
Gnd Gate
14.4V
IRF531
Ordering Information
Part Number
MIC5012BN
MIC5012BWM
Temp. Range
–40°C to +85°C
–40°C to +85°C
Package
14-pin Plastic DIP
16-pin Wide SOIC
Figure 1. High Side Driver
#6014
5V
ON _{10µF +}
Control Input
OFF
1/2 MIC5012
V+
Input
Source
Gnd Gate
48V
100W
Heater
IRF530
Note: The MIC5012 is ESD sensitive.
Figure 2. Low Side Driver
5-114
Protected under one or more of the following Micrel patents:
patent #4,951,101; patent #4,914,546
April 1998