MIC4414/4415
1.5A, 4.5V to 18V,
Low-Side MOSFET Driver
General Description
The MIC4414 and MIC4415 are low-side MOSFET drivers
designed to switch an N-channel enhancement type
MOSFET in low-side switch applications. The MIC4414 is
a non-inverting driver and the MIC4415 is an inverting
driver. These drivers feature short delays and high peak
current to produce precise edges and rapid rise and fall
times.
The MIC4414/15 are powered from a 4.5V to 18V supply
and can sink and source peak currents up to 1.5A,
switching a 1000pF capacitor in 12ns. 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 many 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 MIC4414 and MIC4415 are available in an ultra-small
4-pin 1.2mm x 1.2mm thin QFN package and is rated for
–40°C to +125°C junction temperature range.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
Ultra-small 4-pin 1.2mm x 1.2mm thin QFN package
+4.5V to +18V operating supply voltage range
1.5A peak current
– 3.5Ω output resistance at 18V
– 9Ω output resistance at 5V
Low steady-state supply current
– 77µA control input low
– 445µA control input high
12ns rise and fall times into 1000pF load
MIC4414 (non-inverting)
MIC4415 (inverting)
-40°C to +125°C junction temperature range
Applications
Switch mode power supplies
Solenoid drivers
Motor driver
_________________________________________________________________________________________________________________________
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
August 2012
M9999-080112-A
Micrel, Inc.
MIC4414/MIC4415
Ordering Information
Part Number
MIC4414YFT
MIC4415YFT
Note:
1.Thin QFN pin 1 identifier = “▲”
Marking
D9
D8
Configuration
Non-Inverting
Inverting
Package
4-pin 1.2mm x 1.2mm Thin QFN
4-pin 1.2mm x 1.2mm Thin QFN
Junction
Temperature
Range
-40°C to +125°C
-40°C to +125°C
Lead Finish
Pb-Free
Pb-Free
Pin Configuration
1.2mm x 1.2mm Thin QFN
(Top View)
Pin Description
Pin Number
1
2
Pin Name
OUT
GND
Pin Function
Gate Output: Connection to gate of external MOSFET.
Ground.
Control Input:
3
IN
MIC4414: Logic high drives the gate output above the supply voltage. Logic low forces the gate output
near ground. Do not leave floating.
MIC4415: Logic low drives the gate output above the supply voltage. Logic high forces the gate output
near ground. Do not leave floating.
4
VDD
Supply Voltage: +4.5V to +18V supply.
August 2012
2
M9999-080112-A
Micrel, Inc.
MIC4414/MIC4415
Absolute Maximum Ratings
(1)
VDD to GND.................................................................+20V
IN to GND....................................................... –20V to +20V
OUT to GND.................................................................+20V
Junction Temperature (T
J
) ........................–55°C to +150°C
Storage Temperature (Ts).........................–55°C to +165°C
ESD Rating
(2)
................................................. ESD Sensitive
Operating Ratings
(3)
VDD to GND.................................................. +4.5V to +18V
IN to GND........................................................... 0V to VDD
Junction Temperature (T
J
) ...................... .40C to +125C
Thermal Resistance
1.2mm x 1.2mm Thin QFN (
JC
) ........................60°C/W
1.2mm x 1.2mm Thin QFN (
JA
) ......................140°C/W
Electrical Characteristics
(4)
4.5V
VDD
18V, C
L
= 1000pF; T
A
= 25°C,
Bold
values indicate
40°C
≤
T
J
≤
+125°C.
Parameter
Condition
MIC4414: IN = 0V, VDD = 18V
Supply Current
MIC4415: IN = 5V, VDD = 18V
MIC4414: IN = 5V, VDD = 18V
MIC4415: IN = 0V, VDD = 18V
IN Voltage
IN Current
Output Rise Time
IN = Logic Low
IN = Logic High
0V
VIN
VDD
VDD = 5V, C
L
= 1000pF
VDD = 18V, C
L
= 1000pF
VDD = 5V, C
L
= 1000pF
VDD = 18V, C
L
= 1000pF
VDD = 5V, C
L
= 1000pF
VDD = 18V, C
L
= 1000pF
VDD = 5V, C
L
= 1000pF
VDD = 18V, C
L
= 1000pF
OUT = High
OUT = Low
VDD = 5V, I
OUT
= 10mA
Output Resistance
VDD = 18V, I
OUT
= 10mA
Output Reverse Current
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
3. The device is not guaranteed to function outside operating range.
4. Specification for packaged product only.
Min
Typ
Max
Units
77
445
200
µA
1500
0.8
V
V
3
-10
30
12
33
12
52
29
58
30
-25
25
Source
Sink
Source
Sink
250
+10
µA
ns
Output Fall Time
ns
Delay Time, IN Rising
ns
Delay Time, IN Falling
ns
Output Offset Voltage
mV
9
9
3.5
3.5
10
10
mA
Ω
August 2012
3
M9999-080112-A
Micrel, Inc.
MIC4414/MIC4415
Timing Diagram
Source State
Sink State
(P-Channel On, N-Channel Off)
(P-Channel Off, N-Channel On)
MIC4414/MIC4415 Operating States
MIC4414 (Non-Inverting)
MIC4415 (Inverting)
August 2012
4
M9999-080112-A
Micrel, Inc.
MIC4414/MIC4415
Typical Characteristics
MIC4414 ON IN=5V, OFF IN=0V. MIC4415 ON IN=0V, OFF IN=5V.
Supply Current
vs. Supply Voltage
500
1
IN Bias Current
vs. Supply Voltage
15
Output Source Resistance
vs. Supply Voltage
SUPPLY CURRENT (µA)
ON RESISTANCE (Ω)
IN BIAS CURRENT (µA)
400
IN = ON
0.8
12
I
OUT
= 10mA
300
0.6
9
200
0.4
IN = ON
0.2
6
100
IN = OFF
3
0
0
3
6
9
12
15
18
0
0
3
6
9
12
15
18
0
0
3
6
9
12
15
18
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Output Sink Resistance
vs. Supply Voltage
15
60
Rise and Fall Time
vs. Supply Voltage
C
L
=1000pF
IN = 1MHz, 50% DUTY CYCLE
80
Delay Time
vs. Supply Voltage
ON RESISTANCE (Ω)
48
I
OUT
= 10mA
9
DELAY TIME (ns)
12
64
TIME (ns)
36
FALL
24
RISE
48
IN FALL
6
32
IN RISE
16
3
12
0
0
3
6
9
12
15
18
0
0
3
6
9
12
15
18
0
0
3
6
9
12
15
18
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Peak Output Current
vs. Supply Voltage
3.0
Supply Current
vs. Temperature
500
14
12
Output Source Resistance
vs. Temperature
2.4
SUPPLY CURRENT (µA)
400
ON-RESISTANCE (Ω)
CURRENT (A)
10
8
6
4
2
0
1.8
SOURCE
300
VDD = 18V, IN = ON
200
VDD = 5V, IN = ON
VDD = 5V
I
OUT
= 3mA
VDD = 18V
I
OUT
= 3mA
1.2
0.6
SINK
VDD = 5V, IN = OFF VDD = 18V, IN = OFF
100
0.0
0
3
6
9
12
15
18
0
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
August 2012
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M9999-080112-A
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