MIC4606/4607
Micrel
MIC4606/4607
Dual 3A-Peak Open-Drain MOSFET Driver
Preliminary Information
General Description
The MIC4606 and MIC4607 are BiCMOS/DMOS buffer-
drivers constructed with complementary MOS outputs, where
the drains of the final output totem pole have been left
disconnected so individual connections can be made to the
pull-up and pull-down sections of the output. This allows the
insertion of individual drain current-limiting resistors in the
pull-up and pull-down sections of the outputs, thus allowing
the user to define the rates of rise and fall desired for a
capacitive load, or to limit base current when driving a bipolar
transistor. Minimum rise and fall times, with no resistors, will
be less than 25ns for a 1800pF load.
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, these devices are supe-
rior to the previously-used technique of adding a diode-
resistor combination between the driver output and the MOS-
FET, because they allow 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
Low Output Impedance ....................................... 3Ω typ.
High Speed t
R
, t
F
..................... <25ns with 1800pF Load
Short Delay Times .......................................... <25ns typ.
Wide Operating Range ................................. 4.5V to 18V
Latch-Up Protected: Fully Isolated Process is Inherently
Immune to any Latchup
• Input Withstands Negative Swings to –5V
• ESD Protected ...........................................................2kV
Applications
•
•
•
•
•
•
Motor Controls
Self-Commutating MOSFET Bridge Driver
Driving Bipolar Transistors
Driver for Nonoverlapping Totem Poles
Level Shifters
Power Management
Functional Diagram
Pin Description
V
DD
Pull-Down A
In A
1
2
3
4
8
Pull-Up A
V DD
Pull-Up B
Pull-Down B
MIC4606
7
6
5
0.6mA
0.1mA
MIC4606
INVERTING
UP
IN
2kΩ
MIC4607
NONINVERTING
GND
DWN
GND
In B
Pull Down A
In A
GND
In B
1
2
3
4
8
Pull-Up A
V DD
Pull-Up B
Pull-Down B
MIC4607
7
6
5
Functional Diagram for One Driver
(Two Drivers per Package—Ground Unused Inputs)
6-14
MIC4606/4607
When used to drive bipolar transistors, these drivers allow
insertion of a base current limiting resistor, while providing a
separate half-output for fast turn-off. By proper positioning of
the resistor, either NPN or PNP transistors can be driven.
These drivers, since they have very low quiescent current
(<250µA) and eliminate shoot-through currents in the output
stage, require 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 MIC4606 or MIC4607s may be paralleled.
The MIC4606/4407 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 500mA of reverse current (of either polarity) being forced
back into the outputs All terminals are fully protected against
up to 2kV of electrostatic discharge.
Micrel
Absolute Maximum Ratings (Note 1)
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
MIC4606BN
MIC4606BM
MIC4607BN
MIC4607BM
Logic
Inverting
Inverting
Noninverting
Noninverting
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.
6-15
MIC4606/4607
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
–1
V
DD
+ 0.3
0.8
1
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
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
Any Drain
Any Drain
V
DD
– 0.025
0.025
2.8
5.5
3
>500
5
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
= 1800pF
Figure 1, C
L
= 1800pF
Figure 1, C
L
= 1800pF
Figure 1, C
L
= 1800pF
23
25
17
23
35
35
75
75
ns
ns
ns
ns
Power Supply
I
S
Power Supply Current
V
IN
= 3V (both inputs)
V
IN
= 0V (both inputs)
1.4
0.17
2.5
0.25
mA
mA
V S = 18V
+5V
INPUT
10%
90%
4.7µF
7
0.1µF
0.4V
18V
OUTPUT
T D1
TF
90%
T D2
TR
90%
10%
10%
0V
2
INPUT
1
8,1
OUTPUT
+5V
INVERTING DRIVER
90%
CL = 1800pF
4
2
6,5
INPUT
10%
0.4V
18V
OUTPUT
T D1
TR
90%
10%
0V
T D2
90%
TF
3
10%
NON-INVERTING DRIVER
Figure 1.
MIC4606/4607 Switching time test circuit.
6-16
MIC4606/4607
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
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
I
OUT
= 10mA, V
DD
= 18V
I
OUT
= 10mA, V
DD
= 18V
Any Drain
Any Drain
Reverse Current
V
DD
– 0.025
0.025
3.7
5.5
3
>500
8
8
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
= 1800pF
Figure 1, C
L
= 1800pF
Figure 1, C
L
= 1800pF
Figure 1, C
L
=1800pF
24
32
19
27
60
60
100
100
ns
ns
ns
ns
6
Power Supply
I
S
Power Supply Current
V
IN
= 3V (both inputs)
V
IN
= 0V (both inputs)
1.6
0.25
3.5
0.3
mA
mA
6-17
Embedded System
京公网安备 11010802033920号
EEWORLD
