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 60碌s 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.
Features
鈥?4.75V to 32V operation
鈥?2 independent drivers; implements high and low side
drivers
鈥?Less than 1碌A(chǔ) standby current in the 鈥渙ff鈥?state per
channel
鈥?Available in small outline SOIC packages
鈥?Internal charge pump to drive the gate of an N-channel
power FET above supply
鈥?Internal zener clamp for gate protection
鈥?Minimum external parts count
鈥?Can be used to boost drive to low-side power FETs
operating on logic supplies
鈥?Independent supply pins for half-bridge applications
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Lamp drivers
Motion Control
Heater switching
Power bus switching
Half or full H-bridge drivers
For new designs, Micrel recommends the pin-compatible
MIC5016 dual MOSFET driver.
Typical Applications
14.4V
ON
10碌F
+
Ordering Information
Part Number
MIC5012BN
MIC5012BWM
Temp. Range
鈥?0擄C to +85擄C
鈥?0擄C to +85擄C
Package
14-pin Plastic DIP
16-pin Wide SOIC
1/2 MIC5012
V+
Input
Source
Gnd
Gate
IRF531
Control Input
OFF
Figure 1. High Side Driver
#6014
5V
ON
10碌F
+
48V
Note: The MIC5012 is ESD sensitive.
1/2 MIC5012
V+
Input
Source
Gnd
Gate
IRF530
100W
Heater
Control Input
OFF
Figure 2. Low Side Driver
Protected under one or more of the following Micrel patents:
patent #4,951,101; patent #4,914,546
5-114
April 1998
MIC5012相關(guān)型號PDF文件下載
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