MICREL MIC4428, MIC4426, MIC4427 Datasheet
September 1999 1 MIC4426/4427/4428
MIC4426/4427/4428 Micrel
MIC4426/4427/4428
Dual 1.5A-Peak Low-Side MOSFET Driver
General Description
The MIC4426/4427/4428 family are highly-reliable dual lowside MOSFET drivers fabricated on a BiCMOS/DMOS process for low power consumption and high efficiency. These
drivers translate TTL or CMOS input logic levels to output
voltage levels that swing within 25mV of the positive supply
or ground. Comparable bipolar devices are capable of swinging only to within 1V of the supply. The MIC4426/7/8 is
available in three configurations: dual inverting, dual noninverting, and one inverting plus one noninverting output.
The MIC4426/4427/4428 are pin-compatible replacements
for the MIC426/427/428 and MIC1426/1427/1428 with improved electrical performance and rugged design (Refer to
the Device Replacement lists on the following page). They
can withstand up to 500mA of reverse current (either polarity)
without latching and up to 5V noise spikes (either polarity) on
ground pins.
Primarily intended for driving power MOSFETs, MIC4426/7/8
drivers are suitable for driving other loads (capacitive, resistive, or inductive) which require low-impedance, high peak
current, and fast switching time. Other applications include
driving heavily loaded clock lines, coaxial cables, or piezoelectric transducers. The only load limitation is that total driver
power dissipation must not exceed the limits of the package.
Functional Diagram
INA
OUTA
INVERTING
NONINVERTING
0.1mA
0.6mA
2kΩ
INB
OUTB
INVERTING
NONINVERTING
0.1mA
0.6mA
2kΩ
V
S
GND
Features
• Bipolar/CMOS/DMOS construction
• Latch-up protection to >500mA reverse current
• 1.5A-peak output current
• 4.5V to 18V operating range
• Low quiescent supply current
4mA at logic 1 input
400µA at logic 0 input
• Switches 1000pF in 25ns
• Matched rise and rall times
•7Ω output impedance
• < 40ns typical delay
• Logic-input threshold independent of supply voltage
• Logic-input protection to –5V
• 6pF typical equivalent input capacitance
• 25mV max. output offset from supply or ground
• Replaces MIC426/427/428 and MIC1426/1427/1428
• Dual inverting, dual noninverting, and inverting/
noninverting configurations
• ESD protection
Applications
• MOSFET driver
• Clock line driver
• Coax cable driver
• Piezoelectic transducer driver
MIC4426/4427/4428 Micrel
MIC4426/4427/4428 2 September 1999
Pin Description
Pin Number Pin Name Pin Function
1, 8 NC not internally connected
2 INA Control Input A: TTL/CMOS compatible logic input.
3 GND Ground
4 INB Control Input B: TTL/CMOS compatible logic input.
5 OUTB Output B: CMOS totem-pole output.
6V
S
Supply Input: +4.5V to +18V
7 OUTA Output A: CMOS totem-pole output.
Pin Configuration
1
2
3
4
8
7
6
5
NC
INA
GND
INB
NC
OUTA
V
S
OUTB
MIC4426
Dual
Inverting
A
B
7
5
2
4
MIC4426 MIC4427 MIC4428
A
B
7
5
2
4
A
B
7
5
2
4
1
2
3
4
8
7
6
5
NC
INA
GND
INB
NC
OUTA
V
S
OUTB
MIC4427
Dual
Noninverting
1
2
3
4
8
7
6
5
NC
INA
GND
INB
NC
OUTA
V
S
OUTB
MIC4428
Inverting +
Noninverting
Ordering Information
Part Number Temperature Range Package Configuration
MIC4426AM –55°C to +125°C 8-lead SOIC Dual Inverting
MIC4426BM –40°C to +85°C 8-lead SOIC Dual Inverting
MIC4426BMM –40°C to +85°C 8-lead MSOP Dual Inverting
MIC4426BN –40°C to +85°C 8-lead Plastic DIP Dual Inverting
MIC4427AM –55°C to +125°C 8-lead SOIC Dual Noninverting
MIC4427BM –40°C to +85°C 8-lead SOIC Dual Noninverting
MIC4427BMM –40°C to +85°C 8-lead MSOP Dual Noninverting
MIC4427BN –40°C to +85°C 8-pin Plastic DIP Dual Noninverting
MIC4428AM –55°C to +125°C 8-lead SOIC Inverting + Noninverting
MIC4428BM –40°C to +85°C 8-lead SOIC Inverting + Noninverting
MIC4428BMM –40°C to +85°C 8-lead MSOP Inverting + Noninverting
MIC4428BN –40°C to +85°C 8-lead Plastic DIP Inverting + Noninverting
MIC426/427/428 Device Replacement
Discontinued Number Replacement
MIC426CM MIC4426BM
MIC426BM MIC4426BM
MIC426CN MIC4426BN
MIC426BN MIC4426BN
MIC427CM MIC4427BM
MIC427BM MIC4427BM
MIC427CN MIC4427BN
MIC427BN MIC4427BN
MIC428CM MIC4428BM
MIC428BM MIC4428BM
MIC428CN MIC4428BN
MIC428BN MIC4428BN
MIC1426/1427/1428 Device Replacement
Discontinued Number Replacement
MIC1426CM MIC4426BM
MIC1426BM MIC4426BM
MIC1426CN MIC4426BN
MIC1426BN MIC4426BN
MIC1427CM MIC4427BM
MIC1427BM MIC4427BM
MIC1427CN MIC4427BN
MIC1427BN MIC4427BN
MIC1428CM MIC4428BM
MIC1428BM MIC4428BM
MIC1428CN MIC4428BN
MIC1428BN MIC4428BN
September 1999 3 MIC4426/4427/4428
MIC4426/4427/4428 Micrel
Absolute Maximum Ratings (Note 1)
Supply Voltage (VS) ....................................................+22V
Input Voltage (VIN) .........................VS + 0.3V to GND – 5V
Junction Temperature (TJ) ........................................ 150°C
Storage Temperature ............................... –65°C to +150°C
Lead Temperature (10 sec.)...................................... 300°C
ESD Rating, Note 3
Operating Ratings (Note 2)
Supply Voltage (VS) ..................................... +4.5V to +18V
Temperature Range (TA)
(A) ........................................................ –55°C to +125°C
(B) .......................................................... –40°C to +85°C
Package Thermal Resistance
PDIP θJA............................................................130°C/W
PDIP θJC.............................................................42°C/W
SOIC θJA...........................................................120°C/W
SOIC θJC.............................................................75°C/W
MSOP θJC.........................................................250°C/W
Electrical Characteristics
4.5V ≤ Vs ≤ 18V; TA = 25°C, bold values indicate full specified temperature range; unless noted.
Symbol Parameter Condition Min Typ Max Units
Input
V
IH
Logic 1 Input Voltage 2.4 1.4 V
2.4 1.5 V
V
IL
Logic 0 Input Voltage 1.1 0.8 V
1.0 0.8 V
I
IN
Input Current 0 ≤ VIN ≤ V
S
–1 1 µA
Output
V
OH
High Output Voltage
VS–0.025
V
V
OL
Low Output Voltage 0.025 V
R
O
Output Resistance I
OUT
= 10mA, VS = 18V 6 10 Ω
812Ω
I
PK
Peak Output Current 1.5 A
I Latch-Up Protection withstand reverse current >500 mA
Switching Time
t
R
Rise Time test Figure 1 18 30 ns
20 40 ns
t
F
Fall Time test Figure 1 15 20 ns
29 40 ns
t
D1
Delay Tlme test Flgure 1 17 30 ns
19 40 ns
t
D2
Delay Time test Figure 1 23 50 ns
27 60 ns
t
PW
Pulse Width test Figure 1 400 ns
Power Supply
I
S
Power Supply Current V
INA
= V
INB
= 3.0V 1.4 4.5 mA
1.5 8 mA
I
S
Power Supply Current V
INA
= V
INB
= 0.0V 0.18 0.4 mA
0.19 0.6 mA
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended.
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