MIC4426AM [MICREL]
Dual 1.5A-Peak Low-Side MOSFET Driver; 双1.5A峰值低侧MOSFET驱动器
| 型号： | MIC4426AM |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Dual 1.5A-Peak Low-Side MOSFET Driver |
| 文件： | 总8页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC4426/4427/4428
Dual 1.5A-Peak Low-Side MOSFET Driver
General Description
Features
The MIC4426/4427/4428 family are highly-reliable dual low-
side MOSFET drivers fabricated on a BiCMOS/DMOS pro-
cess 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
orground. Comparablebipolardevicesarecapableofswing-
ing only to within 1V of the supply. The MIC4426/7/8 is
available in three configurations: dual inverting, dual nonin-
verting, and one inverting plus one noninverting output.
• 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
The MIC4426/4427/4428 are pin-compatible replacements
for the MIC426/427/428 and MIC1426/1427/1428 with im-
proved electrical performance and rugged design (Refer to
the Device Replacement lists on the following page). They
canwithstandupto500mAofreversecurrent(eitherpolarity)
without latching and up to 5V noise spikes (either polarity) on
ground pins.
• 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
PrimarilyintendedfordrivingpowerMOSFETs,MIC4426/7/8
drivers are suitable for driving other loads (capacitive, resis-
tive, or inductive) which require low-impedance, high peak
current, and fast switching time. Other applications include
driving heavily loaded clock lines, coaxial cables, or piezo-
electrictransducers.Theonlyloadlimitationisthattotaldriver
power dissipation must not exceed the limits of the package.
• ESD protection
Applications
• MOSFET driver
• Clock line driver
• Coax cable driver
• Piezoelectic transducer driver
Functional Diagram
VS
INVERTING
0.6mA
0.1mA
OUTA
INA
2kΩ
NONINVERTING
INVERTING
0.6mA
0.1mA
OUTB
INB
2kΩ
NONINVERTING
GND
September 1999
1
MIC4426/4427/4428
MIC4426/4427/4428
Micrel
Ordering Information
Part Number
MIC4426AM
MIC4426BM
MIC4426BMM
MIC4426BN
MIC4427AM
MIC4427BM
MIC4427BMM
MIC4427BN
MIC4428AM
MIC4428BM
MIC4428BMM
MIC4428BN
Temperature Range
–55°C to +125°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package
8-lead SOIC
Configuration
Dual Inverting
8-lead SOIC
Dual Inverting
8-lead MSOP
8-lead Plastic DIP
8-lead SOIC
Dual Inverting
Dual Inverting
Dual Noninverting
Dual Noninverting
Dual Noninverting
Dual Noninverting
Inverting + Noninverting
Inverting + Noninverting
Inverting + Noninverting
Inverting + Noninverting
8-lead SOIC
8-lead MSOP
8-pin Plastic DIP
8-lead SOIC
8-lead SOIC
8-lead MSOP
8-lead Plastic DIP
MIC426/427/428 Device Replacement
MIC1426/1427/1428 Device Replacement
Discontinued Number Replacement
Discontinued Number Replacement
MIC426CM
MIC426BM
MIC426CN
MIC426BN
MIC427CM
MIC427BM
MIC427CN
MIC427BN
MIC428CM
MIC428BM
MIC428CN
MIC428BN
MIC4426BM
MIC4426BM
MIC4426BN
MIC4426BN
MIC4427BM
MIC4427BM
MIC4427BN
MIC4427BN
MIC4428BM
MIC4428BM
MIC4428BN
MIC4428BN
MIC1426CM
MIC1426BM
MIC1426CN
MIC1426BN
MIC1427CM
MIC1427BM
MIC1427CN
MIC1427BN
MIC1428CM
MIC1428BM
MIC1428CN
MIC1428BN
MIC4426BM
MIC4426BM
MIC4426BN
MIC4426BN
MIC4427BM
MIC4427BM
MIC4427BN
MIC4427BN
MIC4428BM
MIC4428BM
MIC4428BN
MIC4428BN
Pin Configuration
MIC4426
MIC4426
MIC4427
MIC4427
MIC4428
MIC4428
NC
INA
NC
NC
NC
NC
INA
NC
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
2
4
A
B
7
5
2
4
A
B
7
5
2
4
A
B
7
5
OUTA
VS
INA
GND
INB
OUTA
VS
OUTA
VS
GND
INB
GND
INB
OUTB
OUTB
OUTB
Dual
Inverting
Dual
Noninverting
Inverting +
Noninverting
Pin Description
Pin Number
Pin Name
NC
Pin Function
not internally connected
1, 8
2
INA
Control Input A: TTL/CMOS compatible logic input.
Ground
3
GND
INB
4
Control Input B: TTL/CMOS compatible logic input.
Output B: CMOS totem-pole output.
Supply Input: +4.5V to +18V
5
OUTB
VS
6
7
OUTA
Output A: CMOS totem-pole output.
MIC4426/4427/4428
2
September 1999
MIC4426/4427/4428
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Supply Voltage (V ) ....................................................+22V
Supply Voltage (V ) ..................................... +4.5V to +18V
S
S
Input Voltage (V ) ......................... V + 0.3V to GND – 5V
Temperature Range (T )
IN
S
A
Junction Temperature (T ) ........................................ 150°C
(A) ........................................................ –55°C to +125°C
(B) .......................................................... –40°C to +85°C
Package Thermal Resistance
J
Storage Temperature ............................... –65°C to +150°C
Lead Temperature (10 sec.)...................................... 300°C
ESD Rating, Note 3
PDIP θ ............................................................130°C/W
JA
PDIP θ .............................................................42°C/W
JC
SOIC θ ...........................................................120°C/W
JA
SOIC θ .............................................................75°C/W
JC
MSOP θ .........................................................250°C/W
JC
Electrical Characteristics
4.5V ≤ Vs ≤ 18V; TA = 25°C, bold values indicate full specified temperature range; unless noted.
Symbol
Input
VIH
Parameter
Condition
Min
Typ
Max
Units
Logic 1 Input Voltage
Logic 0 Input Voltage
Input Current
2.4
2.4
1.4
1.5
V
V
VIL
1.1
1.0
0.8
0.8
V
V
IIN
0 ≤ VIN ≤ VS
–1
1
µA
Output
VOH
VOL
RO
High Output Voltage
Low Output Voltage
Output Resistance
V –0.025
V
V
S
0.025
IOUT = 10mA, VS = 18V
withstand reverse current
6
8
10
12
Ω
Ω
IPK
I
Switching Time
Peak Output Current
1.5
A
Latch-Up Protection
>500
mA
tR
Rise Time
test Figure 1
test Figure 1
test Flgure 1
test Figure 1
test Figure 1
18
20
30
40
ns
ns
tF
Fall Time
15
29
20
40
ns
ns
tD1
tD2
Delay Tlme
Delay Time
Pulse Width
17
19
30
40
ns
ns
23
27
50
60
ns
ns
tPW
400
ns
Power Supply
IS
Power Supply Current
Power Supply Current
VINA = VINB = 3.0V
VINA = VINB = 0.0V
1.4
1.5
4.5
8
mA
mA
IS
0.18
0.19
0.4
0.6
mA
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.
September 1999
3
MIC4426/4427/4428
MIC4426/4427/4428
Micrel
Test Circuits
VS = 18V
VS = 18V
0.1µF
4.7µF
0.1µF
4.7µF
6
6
INA 2
INB 4
INA 2
INB 4
7
5
7
5
OUTA
1000pF
OUTA
1000pF
A
A
MIC4426
MIC4427
B
OUTB
1000pF
B
OUTB
1000pF
Figure 1a. Inverting Configuration
Figure 2a. Noninverting Configuration
5V
90%
5V
2.5V
90%
2.5V
tD2
INPUT
INPUT
10%
0V
10%
0V
tPW
tPW
tD1
tF
tR
tD1
tF
tR
tD2
VS
VS
90%
90%
OUTPUT
10%
OUTPUT
10%
0V
0V
Figure 1b. Inverting Timing
Figure 2b. Noninverting Timing
MIC4426/4427/4428
4
September 1999
MIC4426/4427/4428
Micrel
Electrical Characteristics
Rise and Fall Time
vs. Temperature
Rise and Fall Time vs.
Supply Voltage
Delay Time vs. Supply Voltage
70
40
30
20
10
35
30
CL = 1000pF
TA = 25°C
CL = 1000pF
TA = 25°C
CL = 1000pF
VS = 18V
60
50
40
30
25
20
15
10
5
t F
t D2
tR
t D1
tR
20
t F
10
0
0
-50 -25
0
25 50 75 100
125150
-75
0
5
10
15
20
0
5
10
15
20
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Supply Current vs.
Capacitive Load
Rise and Fall Time vs.
Capacitive Load
Delay Time vs. Temperature
35
30
80
70
1k
400kHz
TA = 25°C
VS = 18V
CL = 1000pF
VS = 18V
TA = 25°C
VS = 18V
t D2
60
50
40
30
tR
25
20
15
10
5
100
t F
t D1
10
1
200
kHz
20
10
0
20kHz
0
-50 -25
0
25 50 75 100 125 150
10
100
1000
10000
10
100
1000
10000
-75
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
CAPACITIVE LOAD (pF)
Supply Current vs. Frequency
High Output vs. Current
Low Output vs. Current
1.20
0.96
0.72
0.48
30
1.20
0.96
0.72
0.48
VS = 18V
TA = 25°C
VC = 5V
TA = 25°C
CL = 1000pF
TA = 25°C
VS = 5V
20
10 V
10 V
10 V
10
0
15 V
15 V
5 V
0.24
0
0.24
0
0
10 20 30 40 50 60 70 80 90 100
CURRENT SOURCED (mA)
0
10 20 30 40 50 60 70 80 90 100
CURRENT SUNK (mA)
1
10
100
1000
FREQUENCY (kHz)
Quiescent Power Supply
Current vs. Supply Voltage
Quiescent Power Supply
Current vs. Supply Voltage
Package Power Dissipation
400
300
200
2.5
2.0
1250
1000
SOIC
PDIP
1.5
1.0
750
500
250
0
150
100
50
NO LOAD
BOTH INPUTS LOGIC "0"
TA = 25°C
NO LOAD
BOTH INPUTS LOGIC "1"
TA = 25°C
0.5
0
0
0
5
10
15
20
0
5
10
15
20
25
50
75
100
125
150
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
September 1999
5
MIC4426/4427/4428
MIC4426/4427/4428
Micrel
Power Dissipation
Applications Information
Power dissipation should be calculated to make sure that the
driver is not operated beyond its thermal ratings. Quiescent
power dissipation is negligible. A practical value for total
power dissipation is the sum of the dissipation caused by the
load and the transition power dissipation (P + P ).
Supply Bypassing
Large currents are required to charge and discharge large
capacitive loads quickly. For example, changing a 1000pF
load by 16V in 25ns requires 0.8A from the supply input.
L
T
To guarantee low supply impedance over a wide frequency
range, parallel capacitors are recommended for power sup-
ply bypassing. Low-inductance ceramic MLC capacitors with
short lead lengths (< 0.5") should be used. A 1.0µF film
capacitor in parallel with one or two 0.1µF ceramic MLC
capacitors normally provides adequate bypassing.
Load Dissipation
Power dissipation caused by continuous load current (when
driving a resistive load) through the driver’s output resistance
is:
2
P = I
R
O
L
L
For capacitive loads, the dissipation in the driver is:
Grounding
2
P = f C V
S
WhenusingtheinvertingdriversintheMIC4426orMIC4428,
individual ground returns for the input and output circuits or a
groundplanearerecommendedforoptimumswitchingspeed.
Thevoltagedropthatoccursbetweenthedriver’sgroundand
theinputsignalground,duringnormalhigh-currentswitching,
will behave as negative feedback and degrade switching
speed.
L
L
Transition Dissipation
Inapplicationsswitchingatahighfrequency,transitionpower
dissipation can be significant. This occurs during switching
transitions when the P-channel and N-channel output FETs
are both conducting for the brief moment when one is turning
on and the other is turning off.
Control Input
P = 2 f V Q
T
S
Unused driver inputs must be connected to logic high (which
Charge (Q) is read from the following graph:
can be V ) or ground. For the lowest quiescent current
S
-8
1×10
(< 500µA) , connect unused inputs to ground. A logic-high
signal will cause the driver to draw up to 9mA.
-9
8×10
-9
6×10
The drivers are designed with 100mV of control input hyster-
esis. This provides clean transitions and minimizes output
stage current spikes when changing states. The control input
voltage threshold is approximately 1.5V. The control input
-9
4×10
-9
3×10
recognizes 1.5V up to V as a logic high and draws less than
-9
2×10
S
1µA within this range.
The MIC4426/7/8 drives the TL494, SG1526/7, MIC38C42,
TSC170 and similar switch-mode power supply integrated
circuits.
-9
1×10
4
6
8
10 12 14 16 18
SUPPLY VOLTAGE (V)
Crossover Energy Loss per Transition
MIC4426/4427/4428
6
September 1999
MIC4426/4427/4428
Micrel
Package Information
0.026 (0.65)
MAX)
PIN 1
0.157 (3.99)
0.150 (3.81)
DIMENSIONS:
INCHES (MM)
0.020 (0.51)
0.013 (0.33)
0.050 (1.27)
TYP
45°
0.0098 (0.249)
0.0040 (0.102)
0.010 (0.25)
0.007 (0.18)
0°–8°
0.197 (5.0)
0.189 (4.8)
0.050 (1.27)
0.016 (0.40)
SEATING
PLANE
0.064 (1.63)
0.045 (1.14)
0.244 (6.20)
0.228 (5.79)
8-lead SOP (M)
0.122 (3.10)
0.112 (2.84)
0.199 (5.05)
0.187 (4.74)
DIMENSIONS:
INCH (MM)
0.120 (3.05)
0.116 (2.95)
0.036 (0.90)
0.032 (0.81)
0.043 (1.09)
0.038 (0.97)
0.012 (0.30) R
0.007 (0.18)
0.005 (0.13)
0.008 (0.20)
0.004 (0.10)
5° MAX
0° MIN
0.012 (0.03)
0.012 (0.03) R
0.039 (0.99)
0.0256 (0.65) TYP
0.035 (0.89)
0.021 (0.53)
8-lead MM8™ MSOP (MM)
PIN 1
DIMENSIONS:
INCH (MM)
0.380 (9.65)
0.370 (9.40)
0.255 (6.48)
0.245 (6.22)
0.135 (3.43)
0.125 (3.18)
0.300 (7.62)
0.013 (0.330)
0.010 (0.254)
0.380 (9.65)
0.320 (8.13)
0.018 (0.57)
0.100 (2.54)
0.130 (3.30)
0.0375 (0.952)
8-lead Plastic DIP (N)
September 1999
7
MIC4426/4427/4428
MIC4426/4427/4428
Micrel
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 1999 Micrel Incorporated
MIC4426/4427/4428
8
September 1999
相关型号：
©2020 ICPDF网 联系我们和版权申明