MICREL MIC4452, MIC4451 Datasheet
MIC4451/4452 Micrel
MIC4451/4452
12A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
General Description
MIC4451 and MIC4452 CMOS MOSFET drivers are tough,
efficient, and easy to use. The MIC4451 is an inverting
driver, while the MIC4452 is a non-inverting driver.
Both versions are capable of 12A (peak) output and can
drive the largest MOSFETs with an improved safe operating
margin. The MIC4451/4452 accepts any logic input from
2.4V to VS without external speed-up capacitors or resistor
networks. Proprietary circuits allow the input to swing negative by as much as 5V without damaging the part. Additional
circuits protect against damage from electrostatic discharge.
MIC4451/4452 drivers can replace three or more discrete
components, reducing PCB area requirements, simplifying
product design, and reducing assembly cost.
Modern Bipolar/CMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability of CMOS/
DMOS insures adequate gate voltage to the MOSFET during power up/down sequencing. Since these devices are
fabricated on a self-aligned process, they have very low
crossover current, run cool, use little power, and are easy to
drive.
Features
• BiCMOS/DMOS Construction
• Latch-Up Proof: Fully Isolated Process is Inherently
Immune to Any Latch-up.
• Input Will Withstand Negative Swing of Up to 5V
• Matched Rise and Fall Times............................... 25ns
• High Peak Output Current............................ 12A Peak
• Wide Operating Range.............................. 4.5V to 18V
• High Capacitive Load Drive...........................62,000pF
• Low Delay Time ........................................... 30ns Typ.
• Logic High Input for Any Voltage from 2.4V to V
• Low Supply Current..............450µA With Logic 1 Input
• Low Output Impedance ........................................ 1.0Ω
• Output Voltage Swing to Within 25mV of GND or V
• Low Equivalent Input Capacitance (typ).................7pF
S
S
Applications
• Switch Mode Power Supplies
• Motor Controls
• Pulse Transformer Driver
• Class-D Switching Amplifiers
• Line Drivers
• Driving MOSFET or IGBT Parallel Chip Modules
• Local Power ON/OFF Switch
• Pulse Generators
Functional Diagram
IN
2kΩ
0.1mA
0.3mA
MIC4451
INVERTING
MIC4452
NONINVERTING
V
GND
S
OUT
5-70 April 1998
MIC4451/4452 Micrel
Ordering Information
Part No. Temperature Range Package Configuration
MIC4451BN –40°C to +85°C 8-Pin PDIP Inverting
MIC4451BM –40°C to +85°C 8-Pin SOIC Inverting
MIC4451CT 0°C to +70°C 5-Pin TO-220 Inverting
MIC4452BN –40°C to +85°C 8-Pin PDIP Non-Inverting
MIC4452BM –40°C to +85°C 8-Pin SOIC Non-Inverting
MIC4452CT 0°C to +70°C 5-Pin TO-220 Non-Inverting
Pin Configurations
TAB
VS
IN
NC
GND
1
2
3
4
Plastic DIP (N)
SOIC (M)
TO-220-5 (T)
VS
8
7
OUT
6
OUT
5
GND
5 OUT
4 GND
3VS
2 GND
1IN
5
Pin Description
Pin Number Pin Number Pin Name Pin Function
TO-220-5 DIP, SOIC
1 2 IN Control Input
2, 4 4, 5 GND Ground: Duplicate pins must be externally connected together.
3, TAB 1, 8 V
5 6, 7 OUT Output: Duplicate pins must be externally connected together.
3 NC Not connected.
S
April 1998 5-71
Supply Input: Duplicate pins must be externally connected together.
MIC4451/4452 Micrel
Absolute Maximum Ratings (Notes 1, 2 and 3)
Supply Voltage ..............................................................20V
Input Voltage ..................................VS + 0.3V to GND – 5V
Input Current (VIN > VS) ............................................50 mA
Power Dissipation, T
AMBIENT
PDIP....................................................................960mW
SOIC .................................................................1040mW
≤ 25°C
Operating Ratings
Operating Temperature (Chip) .................................. 150°C
Operating Temperature (Ambient)
C Version ................................................... 0°C to +70°C
B Version................................................–40°C to +85°C
Thermal Impedances (To Case)
5-Pin TO-220 (θJC)..............................................10°C/W
5-Pin TO-220..............................................................2W
Power Dissipation, T
CASE
≤ 25°C
5-Pin TO-220.........................................................12.5W
Derating Factors (to Ambient)
PDIP................................................................7.7mW/°C
SOIC ..............................................................8.3 mW/°C
5-Pin TO-220....................................................17mW/°C
Storage Temperature ...............................–65°C to +150°C
Lead Temperature (10 sec)....................................... 300°C
Electrical Characteristics:
(TA = 25°C with 4.5 V ≤ V
Symbol Parameter Conditions Min Typ Max Units
INPUT
V
IH
V
IL
V
IN
I
IN
OUTPUT
V
OH
V
OL
R
O
R
O
I
PK
I
DC
I
R
SWITCHING TIME (Note 3)
t
R
t
F
t
D1
t
D2
Power Supply
I
S
V
S
Logic 1 Input Voltage 2.4 1.3 V
Logic 0 Input Voltage 1.1 0.8 V
Input Voltage Range –5 VS+.3 V
Input Current 0 V ≤ VIN ≤ V
High Output Voltage See Figure 1 VS–.025 V
Low Output Voltage See Figure 1 .025 V
Output Resistance, I
Output High
Output Resistance, I
Output Low
Peak Output Current VS = 18 V (See Figure 6) 12 A
Continuous Output Current 2 A
Latch-Up Protection Duty Cycle ≤ 2% >1500 mA
Withstand Reverse Current t ≤ 300 µs
Rise Time Test Figure 1, CL = 15,000 pF 20 40 ns
Fall Time Test Figure 1, CL = 15,000 pF 24 50 ns
Delay Time Test Figure 1 15 30 ns
Delay Time Test Figure 1 35 60 ns
Power Supply Current VIN = 3 V 0.4 1.5 mA
Operating Input Voltage 4.5 18 V
≤ 18 V unless otherwise specified.)
S
OUT
OUT
VIN = 0 V 80 150 µA
S
= 10 mA, VS = 18V 0.6 1.5 Ω
= 10 mA, VS = 18V 0.8 1.5 Ω
–10 10 µA
5-72 April 1998
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