MICREL MIC4467, MIC4468, MIC4469 Datasheet
MIC4467/4468/4469 Micrel
MIC4467/4468/4469
Quad 1.2A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS
General Description
The MIC4467/8/9 family of 4-output CMOS buffer/drivers is
an expansion from the earlier single- and dual-output drivers,
to which they are functionally closely related. Because package pin count permitted it, each driver has been equipped
with a 2-input logic gate for added flexibility. Placing four highpower drivers in a single package also improves system
reliability and reduces total system cost. In some applications, one of these drivers can replace not only two packages
of single-input drivers, but some of the associated logic as
well.
Although primarily intended for driving power MOSFETs, and
similar highly capacitive loads, these drivers are equally well
suited to driving any other load (capacitive, resistive, or
inductive), which requires a high-efficiency, low-impedance
driver capable of high peak currents, rail-to-rail voltage swings,
and fast switching times. For example, heavily loaded clock
lines, coaxial cables, and piezoelectric transducers can all be
Logic Diagrams
Features
• Built using reliable, low power CMOS processes
• Latchproof. Withstands 500mA Inductive Kickback
• 3 Input Logic Choices
• Symmetrical Rise and Fall Times .......................... 25ns
• Short, Equal Delay Times ...................................... 75ns
• High Peak Output Current ......................................1.2A
• Wide Operating Range .................................. 4.5 to 18V
• Low Equivalent Input Capacitance (typ) .................. 6pF
• Inputs = Logic 1 for Any Input From 2.4V to V
S
• ESD Protected
Applications
• General-Purpose CMOS Logic Buffer
• Driving All 4 MOSFETs in an H-Bridge
• Direct Small-Motor Driver
• Relay or Peripheral Drivers
• Dual Differential Output Power Drivers
• CCD Driver
• Pin-Switching Network Driver
1A
1B
2A
2B
3A
3B
4A
4B
MIC4467
1
2
3
4
5
6
8
9
V
S
14
7
GND
13
12
11
10
1Y
2Y
3Y
4Y
1A
1B
2A
2B
3A
3B
4A
4B
MIC4468
1
2
3
4
5
6
8
9
V
S
14
7
GND
13
12
11
10
1Y
2Y
3Y
4Y
1A
1B
2A
2B
3A
3B
4A
4B
MIC4469
1
2
3
4
5
6
8
9
V
S
14
7
GND
13
12
11
10
1Y
2Y
3Y
4Y
5-80 April 1998
MIC4467/4468/4469 Micrel
driven easily with MIC446X series drivers. The only limitation
on loading is that total power dissipation in the IC must be
kept within the power dissipation limits of the package.
The MIC446X series drivers are built using a BCD process.
They will not latch under any conditions within their power and
Ordering Information
Part No. Package Temp. Range
MIC44xxCN* 14-Pin Plastic DIP 0° to +70°C
MIC44xxCWM* 16-Pin Wide SOIC 0° to +70°C
MIC44xxBN* 14-Pin Plastic DIP –40° to +85°C
MIC44xxBWM* 16-Pin Wide SOIC –40° to +85°C
* xx identifies input logic:
67 — NAND 68 — AND
69 — AND with 1 inverting input
voltage ratings. They are not subject to damage when up to
5V of noise spiking (either polarity) occurs on the ground line.
They can accept up to half an amp of inductive kickback
current (either polarity) into their outputs without damage or
logic upset.
T ruth Tab le
Inputs
Part No. A B Y
MIC4467 L X H
(Each Driver) X L H
HH L
MIC4468 H H H
(Each Driver) L X L
XL L
MIC4469 L X L
(Each Driver) X H L
HL H
Output
Pin Configurations
1A
1
1B
2
2A
3
2B
4
3A
5
3B
6
GND
7
14-Pin DIP (N)
TOP VIEW
14
13
12
11
10
5
16-Pin Wide SOIC (WM)
V
S
1Y
2Y
3Y
4Y
4B
9
4A
8
1A
1B
2A
2B
3A
3B
GND
GND
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
V
V
1Y
2Y
3Y
4Y
4B
4A
S
S
April 1998 5-81
MIC4467/4468/4469 Micrel
Block Diagrams
V
S
MIC4467
5V
Regulator
N A
Level
Shifter
N B
GND
Functional Diagram for One Driver (Four Drivers per Package–Ground Unused Inputs)
V
S
MIC4468
Y OUT
5V
Regulator
IN A
Level
Shifter
IN B
GND
unctional Diagram for One Driver (Four Drivers per Package–Ground Unused Inputs)
V
S
MIC4469
5V
Regulator
N A
Level
Shifter
N B
Y OUT
Y OUT
GND
Functional Diagram for One Driver (Four Drivers per Package–Ground Unused Inputs)
5-82 April 1998
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