Micrel MIC4416, MIC4417 User Manual
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 enhancementtype MOSFET from a TTL-compatible control signal in lowside 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 approximately 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
30mΩ, 7A max.
†
Load voltage limited only by
MOSFET drain-to-source rating
+12V
4.7µF
0.1µF
On
Off
MIC4416
32
VS
4
CTLGGND
Low-Side Power Switch
Load
Voltage
1
†
Load
Si9410DY*
N-channel
MOSFET
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
Part
Identification
34
GND
12
Dxx
CTLVS
SOT-143 (M4)
Part Number Marking Code* Temperature
Standard Pb-Free Standard Pb-Free Range Configuration Package
MIC4416BM4 MIC4416YM4 D10 D10 –40ºC to +85ºC Non-Inverting SOT-143
MIC4417BM4 MIC4417YM4 D11 D11 –40ºC to +85ºC Inverting SOT-143
*Under bar symbol (_) may not be to scale.
Pin Description
Pin Number Pin Name Pin Function
1 GND Ground: Power return.
2GGate (Output) : Gate connection to external MOSFET.
3VSSupply (Input): +4.5V to +18V supply.
4 CTL 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 (VS) .................................................... +20V
Control Voltage (V
Gate Voltage (VG) .......................................................+20V
Junction Temperature (TJ) ........................................ 150°C
Lead Temperature, Soldering ................... 260°C for 5 sec.
Electrical Characteristics
) .................................. –20V to +20V
CTL
(Note 3)
Operating Ratings
Supply Voltage (VS) ....................................... +4.5 to +18V
Control Voltage (V
Ambient Temperature Range (TA) ............. –40°C to +85°C
Thermal Resistance (θJA)......................................220°C/W
(soldered to 0.25in2 copper ground plane)
) .......................................... 0V to V
CTL
Parameter Condition (Note 1) Min Typ Max Units
Supply Current 4.5V ≤ V
Control Input Voltage 4.5V ≤ V
Control Input Current 0V ≤ V
Delay Time, V
Rising VS = 5V CL = 1000pF, Note 2 42 ns
CTL
≤ 18V V
S
≤ 18V V
S
≤ V
CTL
S
= 0V 50 200 µA
CTL
V
= 5V 370 1500 µA
CTL
for logic 0 input 0.8 V
CTL
V
for logic 1 input 2.4 V
CTL
–10 10 µA
VS = 18V CL = 1000pF, Note 2 33 60 ns
Delay Time, V
Falling VS = 5V CL = 1000pF, Note 2 42 ns
CTL
VS = 18V CL = 1000pF, Note 2 23 40 ns
Output Rise Time VS = 5V CL = 1000pF, Note 2 24 ns
VS = 18V CL = 1000pF, Note 2 14 40 ns
Output Fall Time VS = 5V CL = 1000pF, Note 2 28 ns
VS = 18V CL = 1000pF, Note 2 16 40 ns
Gate Output Offset Voltage 4.5V ≤ VS ≤ 18V VG = high –25 mV
VG = low 25 mV
Output Resistance V
= 5V, I
S
OUT
= 10mA
P-channel (source) MOSFET 7.6 Ω
N-channel (sink) MOSFET 7.8 Ω
VS = 18V, I
OUT
= 10mA
P-channel (source) MOSFET 3.5 10 Ω
N-channel (sink) MOSFET 3.5 10 Ω
Gate Output Reverse Current No latch up 250 mA
S
General Note: Devices are ESD protected, however handling precautions are recommended.
Note 1: Typical values at TA = 25°C. Minimum and maximum values indicate performance at –40°C ≥ TA ≥ +85°C. Parts production tested at 25°C.
Note 2: Refer to “MIC4416 Timing Definitions” and “MIC4417 Timing Definitions” diagrams (see next page).
Note 3: Specification for packaged product only.
May 2005 3 MIC4416/4417
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