MIC94090/1/2/3/4/5
High Side Load Switches for
Consumer Applications
General Description
The MIC94090/1/2/3/4/5 is a family of high-side load switches
designed for operation from 1.7V to 5.5V input voltage. The
load switch pass element is an internal 130mΩ R
DS(ON)
P-
channel MOSFET which enables the device to support up to
1.2A continuous current. Additionally, the load switch
supports 1.5V logic level control and shutdown features.
The MIC94090 and MIC94091 feature rapid turn on. The
MIC94092 and MIC94093 provide a slew rate controlled soft-
start turn-on of 790µs, while the MIC94094 and MIC94095
provide a slew rate controlled soft-start turn-on of 120µs. The
soft-start feature option prevents an in-rush current event
from pulling down the input supply voltage.
The MIC94091, MIC94093, and MIC94095 include a 250Ω
auto discharge load circuit that is switched on when the load
switch is disabled.
An active pull-down on the enable input keeps the
MIC94090/1/2/3/4/5 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 MIC94090/1/2/3/4/5 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
1.7V to 5.5V input voltage range
1.2A continuous operating current
130mΩ R
DS(ON)
Internal level shift for CMOS/TTL control logic
Ultra low quiescent current
Micro-power shutdown current
Rapid turn-on: MIC94090/1
Soft-Start: MIC94092/3 (790µs), MIC94094/5 (120µs)
Load discharge circuit: MIC94091/3/5
Space saving and thermally capable 1.2mm x 1.2mm
Thin MLF
®
package
•
Industry standard SC-70-6 package
•
•
•
•
•
•
•
•
•
•
Applications
•
•
•
•
•
•
•
•
•
Cellular phones
Portable Navigation Devices (PND)
GPS modules
Personal Media Players (PMP)
Ultra Mobile PCs
Other Portable applications
PDAs
Portable instrumentation
Industrial and DataComm equipment
_________________________________________________________________________________________________________
Typical Application
MIC94090 (ultra fast turn on)
MIC94092 (790µs soft-start)
MIC94094 (120µs soft-start)
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technology, Inc.
MIC94091 (ultra fast turn on with auto-discharge)
MIC94093 (790µs soft-start with auto-discharge)
MIC94095 (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
March 2009
M9999-033109-A
Micrel, Inc.
MIC94090/1/2/3/4/5
Ordering Information
Part Number
Pb-Free
MIC94090YMT
MIC94091YMT
MIC94092YMT
MIC94093YMT
MIC94094YMT
MIC94095YMT
MIC94090YC6
MIC94091YC6
MIC94092YC6
MIC94093YC6
MIC94094YC6
MIC94095YC6
Notes:
1. Under bar symbol ( _ ) may not be to scale.
2. Thin MLF
▲
= Pin 1 identifier.
3. Thin MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
®
®
Part Marking
(1)
Pb-Free
D1
D2
D5
D7
0D
1D
D1D
D2D
D5D
D7D
0DD
1DD
Fast
Turn On
●
●
Soft-
Start
Load
Discharge
●
Package
(2)
(3)
4-Pin 1.2mm x 1.2mm Thin MLF
®
4-Pin 1.2mm x 1.2mm Thin MLF
®
4-Pin 1.2mm x 1.2mm Thin MLF
®
●
●
●
790µs
790µs
120µs
120µs
●
●
4-Pin 1.2mm x 1.2mm Thin MLF
®
4-Pin 1.2mm x 1.2mm Thin MLF
®
4-Pin 1.2mm x 1.2mm Thin MLF
®
SC-70-6
SC-70-6
SC-70-6
SC-70-6
SC-70-6
SC-70-6
790µs
790µs
120µs
120µs
●
●
Pin Configuration
PIN 1 TRIANGLE
BY MARKING
VOUT
1
4
GND
EN
2
3
VIN
6-Pin SC-70-6 (C6)
Top View
4-Pin (1.2mm x 1.2mm) Thin MLF
®
(MT)
Top View
Pin Description
Pin Number
TMLF-4
1
4
3
2
--
SC-70-6
1
2, 5
4
6
3
Pin Name
V
OUT
GND
V
IN
EN
NC
Pin Function
Drain of P-Channel MOSFET.
Ground: Connect to electrical ground.
Source of P-Channel MOSFET.
Enable (Input): Active-high CMOS-compatible control input for switch. Internal 2MΩ
pull down resistor to GND, output will be off if this pin is left floating.
No Internal Connection. A signal or voltage applied to this pin will have no effect on
device operation.
March 2009
2
M9999-033109-A
Micrel, Inc.
MIC94090/1/2/3/4/5
Absolute Maximum Ratings
(1)
Input Voltage (V
IN
) ...................................................... +6V
Enable Voltage (V
EN
) ................................................. +6V
Continuous Drain Current (I
D
)
(3)
T
A
= 25°C (MLF
®
).............................................. ±1.2A
T
A
= 25°C (SC-70) ............................................ ±1.2A
Pulsed Drain Current (I
DP
)
(4)
.................................... ±6.0A
Continuous Diode Current (I
S
)
(5)
............................ –50mA
Storage Temperature (T
s
) ..................... –55°C to +150°C
ESD Rating – HBM
(6)
...................................................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
Thin MLF
®
(θ
JC
)
(3)
............................................60°C/W
Thin MLF
®
(θ
JA
)
(3)
..........................................140°C/W
SC-70-6 (θ
JC
) ................................................100°C/W
SC-70-6 (θ
JA
) ................................................240°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 Measured on
the V
IN
Pin
Condition
V
IN
= 1.7V to 4.5V, I
D
= –250μA
V
IN
= V
EN
= 5.5V, I
D
= OPEN
Measured on V
IN
MIC94090/1
V
IN
= V
EN
= 5.5V, I
D
= OPEN
Measured on V
IN
MIC94092/3/4/5
I
EN
I
SD
I
SHUT-SWITCH
R
DS(ON)
Enable Input Current
Shutdown Current
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
Measured on the V
IN
pin
(7)
V
IN
= +5.5V, V
EN
= 0V, I
D
= SHORT
Measured on V
OUT(7)
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
Turn-Off Resistance
V
IN
= +3.6V, I
TEST
= 1mA, V
EN
= 0V
MIC94091/3/5
Min
0.4
0.1
8
2.5
0.01
0.01
130
135
140
170
235
260
250
Typ
Max
1.25
1
15
4
1
1
225
235
255
315
355
375
400
Units
V
µA
µA
µA
µA
µA
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
Ω
March 2009
3
M9999-033109-A
Micrel, Inc.
MIC94090/1/2/3/4/5
Electrical Characteristics (Dynamic)
T
A
= 25°C, bold values indicate –40°C< T
A
< +85°C, unless noted.
Symbol
t
ON_DLY
Parameter
Turn-On Delay Time
Condition
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94090/1
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94092/3
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94094/5
t
ON_RISE
Turn-On Rise Time
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94090/1
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94092/3
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94094/5
t
OFF_DLY
t
OFF_FALL
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 backside 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 MIC94090YMT.
Min
Typ
0.4
Max
1.5
1500
165
1.5
1500
175
200
100
Units
µs
µs
µs
µs
µs
µs
ns
ns
200
65
740
110
0.4
400
65
790
120
60
10
Turn-Off Delay Time
Turn-Off Fall Time
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
March 2009
4
M9999-033109-A
Embedded System
京公网安备 11010802033920号
EEWORLD
