MIC5019
Ultra-Small High-Side N-Channel MOSFET Driver
with Integrated Charge Pump
General Description
The MIC5019 is a high-side MOSFET driver with
integrated charge pump designed to switch an N-
Channel enhancement type MOSFET control signal in
high-side or low–side applications.
The MIC5019 operates from a 2.7V to 9V supply, and
generates gate voltages of 9.2V from a 3V supply, and
16V from a 9V supply. The device consumes a low 77µA
of supply current and less than 1µA of supply current in
shutdown mode.
In high side configurations, the source voltage of the
MOSFET approaches the supply voltage when switched
on. To keep the MOSFET turned on, the MIC5019’s
output drives the MOSFET gate voltage higher than the
supply voltage.
The MIC5019 is 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.
Features
•
•
•
•
•
•
•
•
4-pin 1.2mm x 1.2mm Thin QFN Package
+2.7V to +9V supply voltage range
16V gate drive at VDD = 9V
8V gate drive at VDD = 2.7V
Operates in low and high side configurations
150µA (typical) supply current at VDD = 5V
<1µA shutdown supply current
–40˚C to +125˚C Junction Temperature Range
Applications
•
Load Switch
•
Solenoid Drivers
•
Motor Drivers
Application Diagram
Low-Voltage High-Side Power Switch
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
July 2012
Preliminary and Confidential - Micrel
Micrel, Inc.
MIC5019
Ordering Information
Part Number
MIC5019YFT
Marking
H9
Package
4-pin 1.2mm x 1.2mm Thin QFN
Junction Temperature Range
-40˚C to +125˚C
Lead Finish
Pb-Free
Note:
Thin QFN pin 1 identifier = “▲”
Pin Configuration
1.2mm x 1.2mm Thin QFN (FT)
(TOP View)
Pin Description
Pin
Number
1
2
3
4
Pin Name
VDD
GND
IN
OUT
Supply Voltage: +2.7V to +9V supply.
Ground.
Control Input: Logic high drives the gate output above the supply voltage. Logic low forces the
gate output near ground. Do not leave this pin floating.
Gate Output: Connection to gate of external MOSFET.
Pin Function
July 2012
2
Micrel, Inc.
MIC5019
Absolute Maximum Ratings
(1)
VDD to GND..………..……….... …..……...…………....+10V
IN to GND…….…………...…………………….-0.6V to +10V
OUT to GND………………….…………………………..+19V
Junction Temperature (T
J
) ........................–55°C to +150°C
Storage Temperature (T
s
) .........................–55°C to +165°C
ESD Rating
(2)
…………………..………………….1.5kV HBM
ESD Rating ………………………………………..200V MM
Operating Ratings
(3)
VDD to GND……………………...........……….+2.7V to +9V
IN to GND………………………………………….0V to VDD
Junction Temperature (T
J
)………………...−40°C to +125°C
Thermal Resistance
(θ
JC
)…………………………………….……….……...60°C/W
(θ
JA
)…………………………………….……….…….140°C/W
Electrical Characteristics
(4)
2.7V
≤
VDD
≤
9V; T
A
= 25°C, unless noted.
Bold
values indicate
−40°C
≤
T
J
≤
+125°C.
Parameter
Condition
VDD = 3.3V
IN = 0V
IN = 3.3V
IN = 0V
IN = 3.3V
IN =Logic Low
IN = Logic High
IN = Logic High
Min
Typ
0.15
77
150
Max
1
140
1
300
0.8
Units
Supply Current
VDD = 5V
μA
IN Voltage
IN Current
IN Capacitance
2.7V
≤
VDD
≤
3.6V
3.6V < VDD
≤
9V
2.7V
≤
VDD
≤
9V
VDD = 2.7V
2.7
3.0
0.1
5
6.3
7.1
11.4
13
V
1
μA
pF
V
8.2
9.3
14.8
16.5
10.6
0.440
1.34
5.56
17.6
1.5
4.2
20
60
19
V
μA
ms
μs
OUT Voltage
OUT Zener Diode Clamp Voltage
OUT Current
(5)
OUT Turn-On Time
(6)
OUT Turn-Off Time
(7)
Notes:
1.
2.
3.
4.
5.
6.
7.
VDD = 3.0V
VDD = 4.5V
VDD = 9V
VDD = 5V
VDD = 4.5V
VDD = 4.5V
VOUT = 10V
C
L
= 1000pF
C
L
= 3000pF
CL = 1000pF
CL = 3000 pF
Exceeding the absolute maximum rating may damage the device.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
The device is not guaranteed to function outside operating range.
Specification for packaged product only.
Resistive load selected to achieve V
OUT
= 10V.
Turn-On Time is the time required for the gate voltage to rise to 4V above the supply voltage.
Turn-Off Time is the time required for the gate voltage to fall to 4V above the supply voltage.
July 2012
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Micrel, Inc.
MIC5019
Typical Characteristics
VDD Supply Current
vs. Supply Voltage
1.0
IN=VDD
1.0
IN=GND
VDD Supply Current
vs. Supply Voltage
20
Output Voltage
vs. Supply Voltage
125°C
SUPPLY CURRENT (mA)
OUTPUT VOLTAGE (V)
0.8
-40°C
25°C
0.4
SUPPLY CURRENT (
μ
A)
0.8
16
-40°C
12
25°C
0.6
0.6
0.4
25°C
0.2
125°C
-40°C
8
0.2
125°C
0.0
0
2
4
6
8
10
4
0.0
0
2
4
6
8
10
0
0
2
4
6
8
10
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Output Voltage
vs. Output Current
18
16
VDD=IN=9V
VDD=IN =5V
18
16
Output Voltage
vs. Output Current
1.0
IN Current
vs. Supply Voltage
IN = 2.7V
0.8
VDD=IN=5V
OUTPUT VOLTAGE (V)
12
10
8
6
4
2
0
0
20
40
60
12
10
8
6
4
2
0
125°C
0
20
40
60
80
100
120
140
160
25°C
-40°C
IN CURRENT (
μ
A)
14
OUTPUT VOLTAGE (V)
14
0.6
VDD = IN = 3.3V
0.4
125°C
0.2
25°C
0
2
4
6
-40°C
8
10
VDD = IN = 2.7V
0.0
80
100
120
140
160
SUPPLY VOLTAGE (V)
OUTPUT CURRENT (μA)
OUTPUT CURRENT (μA)
5
OUT Turn-On Time
vs. Load Capacitance
20
OUT Turn-Off Time
vs. Load Capacitance
TURN-ON TIME (ms)
TURN-OFF TIME (
μ
s)
4
VDD=3V
3
16
12
2
VDD=5V
1
VDD=9V
8
VDD=3V
VDD=5V
VDD=9V
4
0
0
1000
2000
3000
4000
5000
0
0
1000
2000
3000
4000
5000
CAPACITANCE (pF)
CAPACITANCE (pF)
July 2012
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Micrel, Inc.
MIC5019
Functional Characteristics
July 2012
5
PCB设计
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