MIC4416/4417
Micrel, Inc.
MIC4416/4417
IttyBitty™ Low-Side MOSFET Driver
General Description
The MIC4416 and MIC4417 IttyBitty™ low-side MOSFET
drivers are designed to switch an N-channel enhancement-
type MOSFET from a TTL-compatible control signal in low-
side switch applications. The MIC4416 is noninverting and
the MIC4417 is inverting. These drivers feature short delays
and high peak current to produce precise edges and rapid
rise and fall times. Their tiny 4-lead SOT-143 package uses
minimum space.
The MIC4416/7 is powered from a +4.5V to +18V supply
voltage. The on-state gate drive output voltage is approxi-
mately equal to the supply voltage (no internal regulators or
clamps). High supply voltages, such as 10V, are appropriate
for use with standard N-channel MOSFETs. Low supply
voltages, such as 5V, are appropriate for use with logic-level
N-channel MOSFETs.
In a low-side configuration, the driver can control a MOSFET
that switches any voltage up to the rating of the MOSFET.
The MIC4416 is available in the SOT-143 package and
is rated for –40°C to +85°C ambient temperature range.
Features
• +4.5V to +18V operation
• Low steady-state supply current
50µA typical, control input low
370µA typical, control input high
• 1.2A nominal peak output
3.5Ω typical output resistance at 18V supply
7.8Ω typical output resistance at 5V supply
• 25mV maximum output offset from supply or ground
• Operates in low-side switch circuits
• TTL-compatible input withstands –20V
• ESD protection
• Inverting and noninverting versions
Applications
•
•
•
•
Battery conservation
Solenoid and motion control
Lamp control
Switch-mode power supplies
Typical Application
* Siliconix
30m
Ω
, 7A max.
†
Load
Voltage
†
Load voltage limited only by
MOSFET drain-to-source rating
0.1µF
3
4
On
Off
MIC4416
VS
CTL
G
GND
2
1
Load
Si9410DY*
N-channel
MOSFET
+12V
4.7µF
Low-Side Power Switch
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
May 2005
1
MIC4416/4417
MIC4416/4417
Micrel, Inc.
Pin Configuration
G
2
GND
1
Part
Identification
3
Dxx
4
VS
CTL
SOT-143 (M4)
Part Number
Standard
Pb-Free
MIC4416BM4
MIC4417BM4
MIC4416YM4
MIC4417YM4
Marking Code*
Standard
Pb-Free
D10
D11
D10
D11
Temperature
Range
–40ºC to +85ºC
–40ºC to +85ºC
Configuration
Non-Inverting
Inverting
Package
SOT-143
SOT-143
*Under bar symbol (_) may not be to scale.
Pin Description
Pin Number
1
2
3
4
Pin Name
GND
G
VS
CTL
Pin Function
Ground: Power return.
Gate (Output) : Gate connection to external MOSFET.
Supply (Input): +4.5V to +18V supply.
Control (Input): TTL-compatible on/off control input.
MIC4416 only:
Logic high forces the gate output to the supply voltage.
Logic low forces the gate output to ground.
MIC4417 only:
Logic high forces the gate output to ground. Logic low
forces the gate output to the supply voltage.
MIC4416/4417
2
May 2005
MIC4416/4417
Micrel, Inc.
Absolute Maximum Ratings
Supply Voltage (V
S
) .................................................... +20V
Control Voltage (V
CTL
) .................................. –20V to +20V
Gate Voltage (V
G
) ....................................................... +20V
Junction Temperature (T
J
) ........................................ 150°C
Lead Temperature, Soldering ................... 260°C for 5 sec.
Operating Ratings
Supply Voltage (V
S
) ....................................... +4.5 to +18V
Control Voltage (V
CTL
) .......................................... 0V to V
S
Ambient Temperature Range (T
A
) ............. –40°C to +85°C
Thermal Resistance
(θ
JA
)...................................... 220°C/W
(soldered to 0.25in
2
copper ground plane)
Electrical Characteristics
(Note 3)
Parameter
Supply Current
Control Input Voltage
Control Input Current
Delay Time, V
CTL
Rising
Delay Time, V
CTL
Falling
Output Rise Time
Condition (Note 1)
4.5V
≤
V
S
≤
18V
4.5V
≤
V
S
≤
18V
0V
≤
V
CTL
≤
V
S
V
S
= 5V
V
S
= 18V
V
S
= 5V
V
S
= 18V
V
S
= 5V
V
S
= 18V
Output Fall Time
V
S
= 5V
V
S
= 18V
Gate Output Offset Voltage
Output Resistance
4.5V
≤
V
S
≤
18V
V
S
= 5V, I
OUT
= 10mA
P-channel (source) MOSFET
N-channel (sink) MOSFET
V
S
= 18V, I
OUT
= 10mA
P-channel (source) MOSFET
N-channel (sink) MOSFET
Gate Output Reverse Current
No latch up
250
3.5
3.5
10
10
Ω
Ω
mA
7.6
7.8
Ω
Ω
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
C
L
= 1000pF,
Note 2
V
G
= high
V
G
= low
V
CTL
= 0V
V
CTL
= 5V
V
CTL
for logic 0 input
V
CTL
for logic 1 input
2.4
–10
42
33
42
23
24
14
28
16
–25
25
40
40
40
60
10
Min
Typ
50
370
Max
200
1500
0.8
Units
µA
µA
V
V
µA
ns
ns
ns
ns
ns
ns
ns
ns
mV
mV
General Note:
Devices are ESD protected, however handling precautions are recommended.
Note 1:
Note 2:
Note 3:
Typical values at T
A
= 25°C. Minimum and maximum values indicate performance at –40°C
≥
T
A
≥
+85°C. Parts production tested at 25°C.
Refer to “MIC4416 Timing Definitions” and “MIC4417 Timing Definitions” diagrams (see next page).
Specification for packaged product only.
May 2005
3
MIC4416/4417
MIC4416/4417
Micrel, Inc.
Definitions
I
SUPPLY
V
SUPPLY
MIC4416 = high
MIC4417 = low
3
4
MIC4416/7
VS
CTL
G
GND
2
1
I
OUT
V
OUT
≈
V
SUPPLY
I
SUPPLY
V
SUPPLY
MIC4416 = low
MIC4417 = high
3
4
MIC4416/7
VS
CTL
G
GND
2
1
I
OUT
V
OUT
≈
GND
Source State
(P-channel on, N-channel off)
Sink State
(P-channel off, N-channel on)
MIC4416/MIC4417 Operating States
INPUT
5V
90%
10%
0V
V
S
90%
delay
time
pulse
width
2.5V
rise
time
delay
time
fall
time
OUTPUT
10%
0V
MIC4416 (Noninverting) Timing Definitions
INPUT
5V
90%
10%
0V
V
S
90%
delay
time
pulse
width
2.5V
rise
time
delay
time
fall
time
OUTPUT
10%
0V
MIC4417 (Inverting) Timing Definitions
Test Circuit
V
SUPPLY
MIC4416/7
3
4
5V
0V
VS
CTL
G
GND
2
1
C
L
V
OUT
MIC4416/4417
4
May 2005
MIC4416/4417
Micrel, Inc.
Typical Characteristics
Note 3
Quiescent Supply Current
vs. Supply Voltage
100
SUPPLY CURRENT (mA)
500
SUPPLY CURRENT (µA)
400
300
200
100
0
Supply Current
vs. Load Capacitance
1MHz
100kHz
10
SUPPLY CURRENT (mA)
100
Supply Current
vs. Load Capacitance
1MHz
100kHz
V
CTL
= 5V
10
10kHz
1
V
SUPPLY
= 18V
0.1
1
10
CAPACITANCE (nF)
100
10kHz
1
V
CTL
= 0V
0
3
6
9
12 15
SUPPLY VOLTAGE (V)
18
V
SUPPLY
= 5V
0.1
1
10
CAPACITANCE (nF)
100
Supply Current
vs. Frequency
100
Output Rise and Fall Time
vs. Load Capacitance
100
10
V
SUPPLY
= 5V
f
CTL
= 50kHz
FALL
TIME (µs)
Output Rise and Fall Time
vs. Load Capacitance
V
SUPPLY
= 18V
f
CTL
= 50kHz
SUPPLY CURRENT (mA)
V
SUPPLY
= 18V
10
10
TIME (µs)
1
FALL
0.1
RISE
1
RISE
1
5V
0.1
0.1
10
1000
2000
100
0.01
1
FREQUENCY (kHz)
10
CAPACITANCE (nF)
100
0.01
1
10
CAPACITANCE (nF)
100
60
50
Delay Time
vs. Supply Voltage
60
50
TIME (ns)
Delay Time
vs. Temperature
V
CTL
FALL
60
50
Delay Time
vs. Temperature
TIME (ns)
V
CTL
RISE
30
20
V
CTL
FALL
10
0
0
3
6
9
12 15
SUPPLY VOLTAGE (V)
18
30
20
10
V
SUPPLY
= 5V
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
TIME (ns)
40
40
V
CTL
RISE
40
30
20
V
CTL
RISE
V
CTL
FALL
10
V
SUPPLY
= 18V
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
50
40
Rise and Fall Time
vs. Supply Voltage
f
CTL
= 1MHz
50
40
TIME (ns)
30
20
10
Rise and Fall Time
vs. Temperature
50
40
Rise and Fall Time
vs. Temperature
V
SUPPLY
= 18V
f
CTL
= 1MHz
TIME (ns)
30
20
10
0
FALL
RISE
FALL
RISE
V
SUPPLY
= 5V
f
CTL
= 1MHz
TIME (ns)
30
20
10
FALL
RISE
0
3
6
9
12 15
SUPPLY VOLTAGE (V)
18
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
May 2005
5
MIC4416/4417
嵌入式系统
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