MIC4610/4611
Micrel
MIC4610/4611
12A-Peak Open-Drain MOSFET Driver
Preliminary Information
General Description
The MIC4610/4611 are CMOS buffer-drivers constructed
with complementary MOS outputs, where the drains of the
final output totem poles have been left disconnected so
individual connections can be made to the pull-up and pull-
down sections of the output, thus allowing the user to define
the rates of rise and fall times desired for a capacitive load, or
a reduced output swing if driving a resistive load, or to limit
base current when driving a bipolar transistor. Minimum rise
and fall times, with no resistors, is 40ns for a 15,000pF load.
There is no upper limit.
These devices are rugged due to extra steps taken to protect
them from failures. A modern Bipolar/CMOS/DMOS process
guarantees freedom from latchup. Proprietary circuits allow
the input to swing negative as much as 5V without damaging
the part.
For driving MOSFETs in motor-control applications, where
slow-on/fast-off operation is desired, the MIC4610/4611 is
superior to the previously-used technique of adding a diode-
resistor combination between the driver output and the MOS-
FET, because it allows accurate control of turn-on, while
maintaining fast turn-off and maximum noise immunity for the
device being driven.
Features
Independently - Programmable Rise and Fall Times
High Peak Output Current ............................... 12A peak
Low Output Impedance ...................................... 1Ω Typ
High Speed t
R
, t
F .......................
<40 ns with 15,000pF load
Short Delay Times ...................................... 30ns Typical
Wide Operating Range ................................. 4.5V to 18V
Latch-up Protected: Fully Isolated Process is Inherently
Immune to Any Latch-Up.
• Input Withstands Negative Swings to –5V
• ESD Protected ...........................................................2kV
•
•
•
•
•
•
•
Applications
•
•
•
•
•
•
•
•
•
Power Switch
Motor Controls
Self-Commutating MOSFET Bridge Driver
Driving Bipolar Transistors
Driver for Nonoverlapping Totem Poles
Pulse Generator
Line Driver
Power Management
Level Shifters
Functional Diagram
Pin Configuration
V
DD
V DD
INPUT
1
2
3
4
8
V DD
Pull-Up
Pull-Down
GND
MIC4610
7
6
5
0.3mA
0.1mA
MIC4610
INVERTING
UP
IN
2kΩ
MIC4611
NONINVERTING
GND
DWN
N.C.
GND
V DD
INPUT
N.C.
GND
1
2
3
4
8
V DD
Pull-Up
Pull-Down
GND
MIC4611
7
6
5
6-22
MIC4610/4611
When used to drive bipolar transistors, this driver maintains
high speeds and allows insertion of a base current-limiting
resistor, and also provides a separate half-output for fast turn-
off. By proper positioning of the resistor, either NPN or PNP
transistors can be driven.
For driving many loads in low-power systems, this driver,
since it has very low quiescent current (<80µA) and elimi-
nates shoot-through current in the output stage, requires
significantly less power than similar drivers. This can be
helpful in meeting low-power budgets.
Due to independent drains, this device can also be used as
an open-drain buffer/driver where both drains are available in
one device, thus minimizing chip count. An unused pull-down
should be returned to the ground; an unused pull-up should
be returned to V
DD
. This is to prevent static damage.
Alternatively, in situations requiring greater current-carrying
capacity, multiple MIC4610 or MIC4611s may be paralleled.
The MIC4610/4611 will not latch under any conditions within
its power and voltage ratings. It is not subject to damage
when up to 5V of noise spiking of either polarity occurs on the
ground pin. It can accept, without damage or logic upset, up
to 1.5 amps of reverse current (of either polarity) being forced
back into the outputs.
Micrel
Absolute Maximum Ratings
Supply Voltage ........................................................... +22V
Maximum Die Temperature .................................... +150°C
Storage Temperature Range ................... –65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................... +300°C
Package Thermal Resistance
CerDIP
θ
JA ...........................................................................
150°C/W
CerDIP
θ
JC ........................................................................
55°C/W
PDIP
θ
JA ...........................................................................
125°C/W
PDIP
θ
JC ............................................................................
45°C/W
SOIC
θ
JA ..........................................................................
250°C/W
SOIC
θ
JC ............................................................................
75°C/W
6
Ordering Information
Part Number
MIC4610BN
MIC4610BM
MIC4611BN
MIC4611BM
Logic
Inverting
Inverting
Non-inverting
Non-inverting
Package
8-pin PDIP
8-pin SOIC
8-pin PDIP
8-pin SOIC
Temperature Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Note 1:
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions above those indicated in the operational sections of the specification is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability. Static-sensitive device. Unused devices must
be stored in conductive material. Protect devices from static discharge and static fields.
6-23
MIC4610/4611
Micrel
Electrical Characteristics
Unless otherwise specified, specifications measured at T
A
= 25°C with 4.5V
≤
V
DD
≤
18V.
Symbol
Input
V
IH
V
IL
I
IN
Output
V
OH
V
OL
R
O
R
O
I
PK
I
R
Parameter
Test Conditions
Min
Typ
Max
Unit
Logic 1 High Input Voltage
Logic 0 Low Input Voltage
Input Current
0V < V
IN
< V
DD
2.4
–5
–10
V
DD
+ 0.3
0.8
10
V
V
µA
High Output Voltage
Low Output Voltage
Output Resistance, Pull-Up
Output Resistance, Pull-Down
Peak Output Current
Latch-up Protection Withstand
Reverse Current
t < 300µs, Duty Cycle
≤
2%
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
V
DD
– 0.025
0.025
1.0
0.9
12
>1500
1.5
1.5
V
V
Ω
Ω
A
mA
Switching Time
t
R
t
F
t
D1
t
D2
Rise Time
Fall Time
Delay Time
Delay Time
Figure 1, C
L
= 15,000pF
Figure 1, C
L
= 15,000pF
Figure 1, C
L
= 15,000pF
Figure 1, C
L
= 15,000pF
40
40
30
33
60
60
60
60
ns
ns
ns
ns
Power Supply
I
S
Power Supply Current
V
IN
= 3V
V
IN
= 0V
0.4
0.08
1.5
0.15
mA
mA
VDD = 18V
+5V
INPUT
10%
0.4V
+
1.0µF
90%
T D1
TF
90%
T D2
TR
90%
10%
18V
OUTPUT
1
8
10%
0.1µF
0V
0.1µF
INVERTING DRIVER
+5V
OUTPUT
7
INPUT
2
6
90%
INPUT
10%
0.4V
T D1
TR
18V
OUTPUT
10%
0V
10%
90%
T D2
90%
CL = 15,000pF
TF
4
5
NON-INVERTING DRIVER
Figure 1.
MIC4610/4611 Switching time test circuit.
6-24
MIC4610/4611
Micrel
Electrical Characteristics, continued
Specifications measured
over operating temperature range
with 4.5V
≤
V
DD
≤
18V, unless otherwise specified.
Symbol
Input
V
IH
V
IL
I
IN
Output
V
OH
V
OL
R
O
R
O
Parameter
Test Conditions
Min
Typ
Max
Unit
Logic 1 High Input Voltage
Logic 0 Low Input Voltage
Input Current
0V
≤
V
IN
≤
V
DD
2.4
–5
–10
V
DD
+ 0.3
0.8
10
V
V
µA
High Output Voltage
Low Output Voltage
Output Resistance, Pull-Up
Output Resistance, Pull-Down
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
V
DD
– 0.025
0.025
1.5
1.4
2.2
2.2
V
V
Ω
Ω
Switching Time (Note 1)
t
R
t
F
t
D1
t
D2
Rise Time
Fall Time
Delay Time
Delay Time
Figure 1, C
L
= 15,000pF
Figure 1, C
L
= 15,000pF
Figure 1, C
L
= 15,000pF
Figure 1, C
L
=15,000pF
60
60
45
45
100
100
80
80
ns
ns
ns
ns
Power Supply
I
S
Power Supply Current
V
IN
= 3V
V
IN
= 0V
0.6
0.1
3
0.2
mA
mA
6
Typical Performance Characteristics
220
200
180
160
140
120
100
80
60
40
20
0
Rise Time
vs. Supply Voltage
47,000pF
22,000pF
10,000pF
4
6
8 10 12 14 16
SUPPLY VOLTAGE (V)
18
220
200
180
160
140
120
100
80
60
40
20
0
Fall Time
vs. Supply Voltage
60
50
Rise and Fall Times
vs. Temperature
C
L
= 10,000pF
V
S
= 18V
t
FALL
RISE TIME (ns)
FALL TIME (ns)
47,000pF
TIME (ns)
40
30
20
10
22,000pF
10,000pF
4
6
8 10 12 14 16
SUPPLY VOLTAGE (V)
18
t
RISE
0
-40
0
40
80
TEMPERATURE (°C)
120
6-25
MIC4610/4611
Micrel
Typical Performance Characteristics, continued
Rise Time
vs. Capacitive Load
5V
200
150
10V
100
50
0
100
18V
300
250
300
250
Fall Time
vs. Capacitive Load
CROSSOVER ENERGY (A•s)
10
-7
Crossover Energy
vs. Supply Voltage
PER TRANSITION
FALL TIME (ns)
RISE TIME (ns)
200
150
10V
100
5V
10
-8
18V
50
0
100
1000
10k
CAPACITIVE LOAD (pF)
100k
1000
10k
CAPACITIVE LOAD (pF)
100k
10
-9
4
6
8 10 12 14
VOLTAGE (V)
16
18
220
200
180
160
140
120
100
80
60
40
20
0
Supply Current
vs. Capacitive Load
V
S
= 18V
150
Supply Current
vs. Capacitive Load
V
S
= 12V
75
Supply Current
vs. Capacitive Load
V
S
= 5V
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
120
90
60
SUPPLY CURRENT (mA)
60
45
30
1
z
MH
z
50
kH
50
kH
20
20
100
1000
10k
CAPACITIVE LOAD (pF)
100k
0
100
1000
10k
CAPACITIVE LOAD (pF)
100k
0
100
1000
10k
CAPACITIVE LOAD (pF)
20
30
1M
15
1M
0k
0k
0k
50
kH
100k
10M
120
H
H
180
Supply Current
vs. Frequency
V
S
= 18V
120
Supply Current
vs. Frequency
V
S
= 12V
60
Supply Current
vs. Frequency
V
S
= 5V
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
140
F
F
1000
pF
0.1µ
0.1µ
0.01
µF
80
60
40
20
0
10k
40
20
0
10k
20
10
0
10k
100k
1M
FREQUENCY (Hz)
10M
100k
1M
FREQUENCY (Hz)
10M
100k
1M
FREQUENCY (Hz)
50
40
Propagation Delay
vs. Supply Voltage
TIME (ns)
TIME (ns)
30
20
10
0
TIME (ns)
t
D2
t
D1
4
6
8 10 12 14 16
SUPPLY VOLTAGE (V)
18
120
110
100
90
80
70
60
50
40
30
20
10
0
Propagation Delay
vs. Input Amplitude
V
S
= 10V
50
40
30
20
Propagation Delay
vs. Temperature
t
D2
t
D2
10
t
D1
8
0
t
D1
0
2
4
6
INPUT (V)
10
-40
0
40
80
TEMPERATURE (°C)
6-26
1000
pF
60
1000
pF
0.01
100
30
0.1µ
F
120
80
µF
40
0.01
100
SUPPLY CURRENT (mA)
50
µF
160
H
Hz
z
Hz
z
z
z
z
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