MIC94080/1/2/3/4/5
67mΩ R
DSON
2A High Side Load Switch
in 0.85mm x 0.85mm Thin MLF
®
Package
General Description
The MIC94080/1/2/3/4/5 is a family of high-side load switches
designed to operate from 1.7V to 5.5V input voltage. The load
switch pass element is an internal 67mΩ R
DSON
P-Channel
MOSFET which enables the device to support up to 2A of
continuous current. Additionally, the load switch supports 1.5V
logic level control and shutdown features in a tiny 0.85mm x
®
0.85mm 4-pin Thin MLF package.
The MIC94080 and MIC94081 feature rapid turn on. The
MIC94082 and MIC94083 provide a slew rate controlled soft-
start turn-on of 800µs, while the MIC94084 and MIC94085
provide a slew rate controlled soft-start turn-on of 120µs. The
soft-start feature is provided to prevent an in-rush current
event from pulling down the input supply voltage.
The MIC94081, MIC94083, and MIC94085 feature an active
load discharge circuit which switches in a 250Ω load when the
switch is disabled to automatically discharge a capacitive load.
An active pull-down on the enable input keeps the
MIC94080/1/2/3/4/5 in a default OFF state until the enable pin
is pulled above 1.25V. Internal level shift circuitry allows low
voltage logic signals to switch higher supply voltages. The
enable voltage can be as high as 5.5V and is not limited by
the input voltage.
The MIC94080/1/2/3/4/5 operating voltage range makes them
ideal for Lithium ion and NiMH/NiCad/Alkaline battery
powered systems, as well as non-battery powered
applications. The devices provide low quiescent current and
low shutdown current to maximize battery life.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
∑
0.85mm x 0.85mm space saving 4-pin Thin MLF
package
∑
1.7V to 5.5V input voltage range
∑
2A continuous operating current
∑
67mΩ R
DSON
∑
Internal level shift for CMOS/TTL control logic
∑
Ultra low quiescent current
∑
Micro-power shutdown current
∑
Soft-Start: MIC94082/3 (800µs), MIC94084/5 (120µs)
∑
Load discharge circuit: MIC94081, MIC94083,
MIC94085
∑
Ultra fast turn off time
∑
Junction operating temperature from -40ºC to +125ºC
®
Applications
∑
∑
∑
∑
∑
∑
∑
∑
∑
Cellular phones
Portable Navigation Devices (PND)
Personal Media Players (PMP)
Ultra Mobile PCs
Portable instrumentation
Other Portable applications
PDAs
GPS Modules
Industrial and DataComm equipment
________________________________________________________________________________________________________
Typical Application
V
IN
V
OUT
V
IN
V
OUT
EN
Level Shift
and Slew
Rate
Control
Load
EN
Level Shift
Slew Rate
Control
&
Load
Discharge
Load
GND
GND
MIC94080 (ultra fast turn on)
MIC94082 (800µs soft-start)
MIC94084 (120µs soft-start)
MLF and
MicroLeadFrame
is a registered trademark of Amkor Technology, Inc.
MIC94081 (ultra fast turn on with auto-discharge)
MIC94083 (800µs soft-start with auto-discharge)
MIC94085 (120µs soft-start with auto-discharge)
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 2009
M9999-071509-C
Micrel, Inc.
MIC94080/1/2/3/4/5
Ordering Information
Part Number
MIC94080YFT
MIC94081YFT
MIC94082YFT
MIC94083YFT
MIC94084YFT
MIC94085YFT
Notes:
1. Thin MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
®
Part Marking
C1
C2
C5
C7
C0
1C
Fast
Turn On
Soft-Start
Load
Discharge
Package
(1)
•
•
800µs
800µs
120µs
120µs
4-Pin 0.85mm x 0.85mm Thin MLF
®
®
®
®
®
®
•
•
•
4-Pin 0.85mm x 0.85mm Thin MLF
4-Pin 0.85mm x 0.85mm Thin MLF
4-Pin 0.85mm x 0.85mm Thin MLF
4-Pin 0.85mm x 0.85mm Thin MLF
4-Pin 0.85mm x 0.85mm Thin MLF
Pin Configuration
4-Pin (0.85mm x 0.85mm) Thin MLF
(Top View)
®
(Bottom View)
Example Showing Orientation of Part Marking
Pin Description
Pin Number
1
2
3
4
Pin Name
V
OUT
GND
V
IN
EN
Pin Function
Drain of P-Channel MOSFET.
Ground should be connected to electrical ground.
Source of P-Channel MOSFET.
Enable (Input): Active-high CMOS/TTL control input for switch. Internal ~2MW Pull down resistor.
Output will be off if this pin is left floating.
July 2009
2
M9999-071509-C
Micrel, Inc.
MIC94080/1/2/3/4/5
Absolute Maximum Ratings
(1)
Input Voltage (V
IN
) ...........................................................+6V
Enable Voltage (V
EN
) ......................................................+6V
(3)
Continuous Drain Current (I
D
)
T
A
= 25°C ................................................................. ±2A
T
A
= 85°C ..............................................................±1.5A
(4)
Pulsed Drain Current (I
DP
) .........................................±6.0A
(5)
Continuous Diode Current (I
S
) ................................–50mA
Storage Temperature (T
s
) ......................... –55°C to +150°C
(6)
ESD Rating – HBM ....................................................... 3kV
Operating Ratings
(2)
Input Voltage (V
IN
) ..........................................+1.7 to +5.5V
Junction Temperature (T
J
) .......................–40°C to +125°C
Package Thermal Resistance
®
0.85mm x 0.85mm Thin MLF
(q
JA
) ..........................................................140°C/W
(q
JC
) ............................................................ 85°C/W
Electrical Characteristics
T
A
= 25°C, bold values indicate –40°C< T
A
< +85°C, unless noted.
Symbol
V
EN_TH
I
Q
Parameter
Enable Threshold Voltage
Quiescent Current
Condition
V
IN
= 1.7V to 4.5V, I
D
= –250µA
V
IN
= V
EN
= 5.5V, I
D
= OPEN
Measured on V
IN
MIC94080/1
V
IN
= V
EN
= 5.5V, I
D
= OPEN
Measured on V
IN
MIC94082/3/4/5
I
EN
I
SHUT-Q
I
SHUT-SWITCH
R
DS(ON)
Enable Input Current
Quiescent Current (shutdown)
OFF State Leakage Current
P-Channel Drain to Source ON
Resistance
V
IN
= V
EN
= 5.5V, I
D
= OPEN
V
IN
= +5.5V, V
EN
= 0V, I
D
= OPEN
(7)
Measured on V
IN
V
IN
= +5.5V, V
EN
= 0V, I
D
= SHORT
(7)
Measured on V
OUT
,
V
IN
= +5.0V, I
D
= –100mA, V
EN
= 1.5V
V
IN
= +4.5V, I
D
= –100mA, V
EN
= 1.5V
V
IN
= +3.6V, I
D
= –100mA, V
EN
= 1.5V
V
IN
= +2.5V, I
D
= –100mA, V
EN
= 1.5V
V
IN
= +1.8V, I
D
= –100mA, V
EN
= 1.5V
V
IN
= +1.7V, I
D
= –100mA, V
EN
= 1.5V
R
SHUTDOWN
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. With thermal contact to PCB. See thermal considerations section.
4. Pulse width <300µs with < 2% duty cycle.
5. Continuous body diode current conduction (reverse conduction, i.e. V
OUT
to V
IN
) is not recommended.
6. Devices are ESD sensitive. Handling precautions recommended. HBM (Human body model), 1.5kΩ in series with 100pF.
7. Measured on the MIC94080YFT.
Min
0.4
Typ
Max
1.25
Units
V
µA
0.1
8
2.8
0.02
0.02
67
70
80
110
175
200
250
1
15
4
1
1
115
130
165
225
350
375
400
µA
µA
µA
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
Ω
Turn-Off Resistance
V
IN
= +3.6V, I
TEST
= 1mA, V
EN
= 0V
MIC94081/3/5
July 2009
3
M9999-071509-C
DIY/Open Source Hardware
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