Ten drugi to np. LAF0001 czyli np. FAN7601. Poczytaj o nich na forum: TV serwis /Monitory serwis p.s Opis _datasheet rodziny 4428-4427-4426 w zał. Rozwiazanie ukl. pracy 4432 (odp. 4427) też w zał.
MIC4426/4427/4428
Micrel, Inc.
MIC4426/4427/4428
Dual 1.5A-Peak Low-Side MOSFET Driver
General Description
Features
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.
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•
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•
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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.
•
Bipolar/CMOS/DMOS construction
Latch-up protection to & gt; 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
& lt; 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
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•
•
•
Note See MIC4126/4127/4128 for high power and narrow
pulse applications.
MOSFET driver
Clock line driver
Coax cable driver
Piezoelectic transducer driver
Functional Diagram
VS
0.1mA
0.6mA
INVERTING
OUTA
INA
2kΩ
NONINVERTING
0.1mA
0.6mA
INVERTING
OUTB
INB
2kΩ
NONINVERTING
GND
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2007
1
M9999-101907
MIC4426/4427/4428
Micrel, Inc.
Ordering Information
Standard
Part Number
MIC4426BM
MIC4426CM
Pb-Free
Temperature
Range
Package
Configuration
MIC4426YM
–40ºC to +85ºC
8-Pin SOIC
Dual Inverting
MIC4426ZM
–0ºC to +70ºC
8-Pin SOIC
Dual Inverting
MIC4426YMM
–40ºC to +85ºC
8-Pin MSOP
Dual Inverting
MIC4426BN
MIC4426YN
–40ºC to +85ºC
8-Pin PDIP
Dual Inverting
MIC4426CN
MIC4426ZN
–0ºC to +70ºC
8-Pin PDIP
Dual Inverting
MIC4427BM
MIC4427YM
–40ºC to +85ºC
8-Pin SOIC
Dual Non-Inverting
MIC4426BMM
MIC4427CM
MIC4427ZM
–0ºC to +70ºC
8-Pin SOIC
Dual Non-Inverting
MIC4427YMM
–40ºC to +85ºC
8-Pin MSOP
Dual Non-Inverting
MIC4427BN
MIC4427YN
–40ºC to +85ºC
8-Pin PDIP
Dual Non-Inverting
MIC4427CN
MIC4427ZN
–0ºC to +70ºC
8-Pin PDIP
Dual Non-Inverting
MIC4428BM
MIC4428YM
–40ºC TO +85ºC
8-Pin SOIC
Inverting + Non-Inverting
MIC4428CM
MIC4428ZM
–0ºC to +70ºC
8-Pin SOIC
Inverting + Non-Inverting
MIC4427BMM
MIC4428BMM
MIC4428YMM
–40ºC to +85ºC
8-Pin MSOP
Inverting + Non-Inverting
MIC4428BN
MIC4428YN
–40ºC to +85ºC
8-Pin PDIP
Inverting + Non-Inverting
MIC4428CN
MIC4428ZN
–0ºC to +70ºC
8-Pin PDIP
Inverting + Non-Inverting
Note
DESC standard military drawing 5962-88503 available;
MIC4426, CERDIP 8-Pin
SMD#: 5962-8850307PA
MIC4427, CERDIP 8-Pin
SMD#: 5962-8850308PA
MIC4428, CERDIP 8-Pin
SMD#: 5962-8850309PA
Micrel Part Number: 5952-8850307PA
Micrel Part Number: 5952-8850308PA
Micrel Part Number: 5952-8850309PA
MIC426/427/428 Device Replacement
Discontinued Number
MIC426CM
MIC426BM
MIC426CN
MIC426BN
MIC427CM
MIC427BM
MIC427CN
MIC427BN
MIC428CM
MIC428BM
MIC428CN
MIC428BN
M9999-101907
MIC1426/1427/1428 Device Replacement
Replacement
MIC4426BM
MIC4426BM
MIC4426BN
MIC4426BN
MIC4427BM
MIC4427BM
MIC4427BN
MIC4427BN
MIC4428BM
MIC4428BM
MIC4428BN
MIC4428BN
Discontinued Number
MIC1426CM
MIC1426BM
MIC1426CN
MIC1426BN
MIC1427CM
MIC1427BM
MIC1427CN
MIC1427BN
MIC1428CM
MIC1428BM
MIC1428CN
MIC1428BN
2
Replacement
MIC4426BM
MIC4426BM
MIC4426BN
MIC4426BN
MIC4427BM
MIC4427BM
MIC4427BN
MIC4427BN
MIC4428BM
MIC4428BM
MIC4428BN
MIC4428BN
October 2007
MIC4426/4427/4428
Micrel, Inc.
Pin Configuration
NC 1
8 NC
INA 2
7 OUTA
GND 3
6 VS
5 OUTB
INB 4
MIC4427
MIC4426
MIC4426
2
A
4
B
5
NC 1
8 NC
INA 2
7
7 OUTA
GND 3
6 VS
5 OUTB
INB 4
MIC4428
MIC4427
2
A
7
4
B
5
NC 1
8 NC
INA 2
7 OUTA
GND 3
6 VS
5 OUTB
INB 4
2
A
7
4
B
5
Inverting+
Noninverting
Dual
Noninverting
Dual
Inverting
MIC4428
Pin Description
Pin Number
Pin Name
1, 8
NC
not internally connected
2
INA
Control Input A: TTL/CMOS compatible logic input.
3
GND
4
INB
5
OUTB
6
7
October 2007
VS
OUTA
Pin Function
Ground
Control Input B: TTL/CMOS compatible logic input.
Output B: CMOS totem-pole output.
Supply Input: +4.5V to +18V
Output A: CMOS totem-pole output.
3
M9999-101907
MIC4426/4427/4428
Micrel, Inc.
Absolute Maximum Ratings(1)
Operating Ratings(2)
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(3)
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 θJA ......................................................... 250°C/W
Electrical Characteristics(4)
4.5V ≤ Vs ≤ 18V; TA = 25°C, bold values indicate full specified temperature range; unless noted.
Symbol
Parameter
Condition
Min
Typ
2.4
2.4
Max
1.4
1.5
Units
Input
VIH
Logic 1 Input Voltage
VIL
Logic 0 Input Voltage
IIN
Input Current
VOH
High Output Voltage
Output
VOL
RO
IPK
I
1.1
1.0
VS–0.025
Low Output Voltage
Output Resistance
IOUT = 10mA, VS = 18V
V
V
µA
V
0.025
6
8
V
10
12
Ω
Ω
1.5
Peak Output Current
Latch-Up Protection
0.8
0.8
1
–1
0 ≤ VIN ≤ VS
V
V
withstand reverse current
A
& gt; 500
mA
Switching Time
tR
Rise Time
test Figure 1
18
20
30
40
ns
ns
tF
Fall Time
test Figure 1
15
29
20
40
ns
ns
tD1
Delay Tlme
test Flgure 1
17
19
30
40
ns
ns
tD2
Delay Time
test Figure 1
23
27
50
60
ns
ns
tPW
Pulse Width
test Figure 1
IS
Power Supply Current
VINA = VINB = 3.0V
1.4
1.5
4.5
8
mA
mA
IS
Power Supply Current
VINA = VINB = 0.0V
0.18
0.19
0.4
0.6
mA
mA
400
ns
Power Supply
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. Specification for packaged product only.
M9999-101907
4
October 2007
MIC4426/4427/4428
Micrel, Inc.
Test Circuits
VS = 18V
VS = 18V
0.1µF
6
INA
2
7
A
MIC4426
4
5
B
INB
4.7µF
OUTA
1000pF
INA
INPUT
OUTB
1000pF
VS
90%
tD1
tF
tD2
tR
5V
90%
2.5V
10%
0V
VS
90%
tD1
tP W
tR
tD2
tF
O U TPU T
O U TPU T
10%
0V
10%
0V
Figure 1b. Inverting Timing
October 2007
OUTB
1000pF
Figure 2a. Noninverting Configuration
INPUT
tP W
OUTA
1000pF
5
B
INB
4.7µF
7
A
MIC4427
2.5V
10%
0V
2
4
Figure 1a. Inverting Configuration
5V
90%
0.1µF
6
Figure 2b. Noninverting Timing
5
M9999-101907
MIC4426/4427/4428
Micrel, Inc.
Electrical Characteristics
Delay Time vs.
Supply Voltage
Rise and Fall Time vs.
Supply Voltage
70
35
CL = 1000pF
TA = 25°C
60
20
30
tR
20
5
10
15
SUPPLY VOLTAGE (V)
0
20
0
Delay Time vs.
Temperature
80
t D2
TIME (ns)
25
20
t D1
15
10
5
0
40
30
200
kHz
20kHz
20
10
10
SUPPLY CURRENT (mA)
2.5
| VS – V
| (V)
OUT
1000
1.5
NO LOAD
BOTH INPUTS LOGIC " 1 "
TA = 25°C
0.5
0
0
5
10
15
SUPPLY VOLTAGE (V)
M9999-101907
400
20
10 V
15 V
Quiescent Power Supply Current
vs. Supply Voltage
TA = 25°C
VS = 5V
0.72
10 V
0.48
15 V
0.24
0
0 10 20 30 40 50 60 70 80 90 100
300
0 10 20 30 40 50 60 70 80 90 100
CURRENT SUNK (mA)
Package Power Dissipation
1250
1000
200
150
NO LOAD
BOTH INPUTS LOGIC " 0 "
TA = 25°C
100
50
0
100
1000
10000
CAPACITIVE LOAD (pF)
0.96
CURRENT SOURCED (mA)
2.0
10
Low Output vs. Current
VC = 5V
0.24
10
100
FREQUENCY (kHz)
10
1.20
0.48
Quiescent Power Supply Current
vs. Supply Voltage
1.0
TA = 25°C
0.72
0
1
tR
High Output vs. Current
SUPPLY CURRENT (A)
SUPPLY CURRENT (mA)
0
5V
T A = 25°C
VS = 18V
tF
1
100
1000
10000
CAPACITIVE LOAD (pF)
0.96
10 V
1k
100
50
1.20
VS = 18V
20
10
Rise and Fall Time vs.
Capacitive Load
60
Supply Current vs. Frequency
TA = 25°C
CL = 1000pF
TEMPERATURE (°C)
400kHz
T A = 25°C
VS = 18V
70
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (°C)
30
-75 -50 -25 0 25 50 75 100 125 150
20
TIME (ns)
CL = 1000pF
VS = 18V
30
5
10
15
SUPPLY VOLTAGE (V)
Supply Current vs.
Capacitive Load
SUPPLY CURRENT (mA)
35
tR
10
OUTPUT VOL AGE (V)
0
tF
20
5
MAXIMUM PACKAGE
POWER DISSIP TION (mW)
0
10
tF
10
t D1
15
CL = 1000pF
VS = 18V
30
t D2
TIME (ns)
TIME (ns)
TIME (ns)
25
40
40
CL = 1000pF
TA = 25°C
30
50
Rise and Fall Time vs.
Temperature
0
5
10
15
SUPPLY VOLTAGE (V)
6
20
SOIC
750
500
PDIP
250
0
25
50
75
100
125
150
AMBIENT TEMPERATURE (°C)
October 2007
MIC4426/4427/4428
Micrel, Inc.
Applications Information
Power Dissipation
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 (PL + PT).
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.
To guarantee low supply impedance over a wide frequency
range, parallel capacitors are recommended for power supply
bypassing. Low-inductance ceramic MLC capacitors with short
lead lengths ( & lt; 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:
PL = IL2 RO
Grounding
For capacitive loads, the dissipation in the driver is:
PL = f CL VS2
When using the inverting drivers in the MIC4426 or MIC4428,
individual ground returns for the input and output circuits or
a ground plane are recommended for optimum switching
speed. The voltage drop that occurs between the driver’s
ground and the input signal ground, during normal high-current switching, will behave as negative feedback and degrade
switching speed.
Transition Dissipation
In applications switching at a high frequency, transition power
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
PT = 2 f VS Q
Unused driver inputs must be connected to logic high (which
can be VS) or ground. For the lowest quiescent current
( & lt; 500µA) , connect unused inputs to ground. A logic-high
signal will cause the driver to draw up to 9mA.
Charge (Q) is read from the following graph:
1×10-8
8×10-9
CHARGE (Q)
The drivers are designed with 100mV of control input hysteresis. 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
recognizes 1.5V up to VS as a logic high and draws less than
1µA within this range.
6×10-9
4×10-9
3×10-9
2×10-9
The MIC4426/7/8 drives the TL494, SG1526/7, MIC38C42,
TSC170 and similar switch-mode power supply integrated
circuits.
1×10-9
4
6
8
10 12 14 16
SUPPLY VOLTAGE (V)
18
Crossover Energy Loss per Transition
October 2007
7
M9999-101907
MIC4426/4427/4428
Micrel, Inc.
Package Information
MAX )
PIN 1
INCHES (MM)
0.150 (3.81)
0.013 (0.33)
45°
TYP
0.0040 (0.102)
0.010 (0.25)
0.007 (0.18)
0°–8°
0.189 (4.8)
0.016 (0.40)
PLANE
0.045 (1.14)
0.228 (5.79)
8-Pin SOIC (M)
0.112 (2.84)
0.187 (4.74)
INCH (MM)
0.116 (2.95)
0.032 (0.81)
0.038 (0.97)
0.012 (0.30) R
0.012 (0.03)
0.0256 (0.65) TYP
5°
0° MIN
0.004 (0.10)
0.007 (0.18)
0.005 (0.13)
0.012 (0.03) R
0.035 (0.89)
0.021 (0.53)
8-Pin MM8™ MSOP (MM)
8-Pin Plastic DIP (N)
M9999-101907
8
October 2007
MIC4426/4427/4428
Micrel, Inc.
MICREL INC.
2180 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
This information furnished by
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2003 Micrel, Incorporated.
October 2007
9
M9999-101907