MIC94066-69
Dual High Side Power Switches
General Description
The MIC94066-69 are dual high-side load switches
designed for operation between 1.7V to 5.5V. The
devices contain a pair of low on-resistance,
115mΩ(max) P-channel MOSFETs that support over
2A of continuous current. The MIC94067 and
MIC94069 feature an active load discharge circuit
which insures capacitive loads retain no charge
when the main switch is in an OFF state.
An active pull-down on the enable input keeps
MIC94066-69 in a default OFF state until the EN pin
is pulled to a high level. The built-in level shift
circuitry allows for a logic signal that may be different
from the supply voltage to switch the high-side P-
channel MOSFET on or off.
MIC94066-67 feature rapid turn on while MIC94068-
69 provide a slew rate controlled Soft-Start turn-on
of 800µs (typical) to prevent in-rush current from
glitching supply rails.
MIC94066-69’s voltage range makes them suitable
for 1-cell Lithium ion and 2- to 3-cell
NiMH/NiCad/Alkaline powered systems, as well as
all 5V applications. Their low operating current of
2µA and low shutdown current of <1µA maximize
battery life.
Data sheets and support documentation can be
found on Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
1.7V to 5.5V input voltage range
2A continuous operating current
85mΩ (typ) R
ON
Built-in level shift for control logic; can be
operated by 1.5V logic.
Low 2µA quiescent current
Soft-Start: MIC94068-69
Micro-power shutdown <1µA
Load discharge circuit: MIC94067, MIC94069
Space saving 2mm x 2mm MLF™
Applications
•
Load switch in portable applications:
-
Cellular phones
-
PDAs
-
MP3 players
-
Digital Cameras
-
Portable instrumentation
•
Battery switch-over circuits
•
Level translators
____________________________________________________________________________________________________
Typical Application
½ MIC94066, 68
Load Switch Application
½ MIC94067, 69
Load Switch with Capacitive Load Discharge
MLF and MicroLead Frame is a registered trademark of Amkor Technologies
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 2006
M9999-082406
Micrel
MIC94066-69
Ordering Information
Part Number
MIC94066YML
MIC94067YML
MIC94068YML
MIC94069YML
Part
Marking*
P66
P67
P68
P69
●
●
●
●
2x2 mm MLF™
Soft-Start
Load Discharge
Pb-Free Package
* Note: Over bar symbol may not be to scale
Pin Configuration
Top View
2x2 mm MLF™ (code)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
V
IN
A
ENA
V
IN
B
ENB
V
OUT
B
GND
V
OUT
A
GND
Pin Function
Source of P-channel MOSFET.
Enable (Input): Active-high CMOS compatible control input for switch A. Do not
leave floating.
Source of P-channel MOSFET.
Enable (Input): Active-high CMOS compatible control input for switch A. Do not
leave floating.
Drain of P-channel MOSFET.
Ground. Both ground pins must be grounded.
Drain of P-channel MOSFET.
Ground. Both ground pins must be grounded.
August 2006
2
M9999-082406
Micrel
MIC94066-69
Absolute Maximum Ratings
(1)
Input Voltage (V
IN
) ............................................... +6V
Enable Voltage (V
EN
) .......................................... +6V
Continuous Drain Current (I
D
)
(3)
T
A
= 25°C ...................................................... ±2A
T
A
= 85°C ................................................... ±1.4A
Pulsed Drain Current (I
DP
)
(4)
................................ ±6A
Continuous Diode Current (I
S
)
(4)
..................... –50mA
Storage Temperature (T
s
)............... –55°C to +150°C
EDS Rating – HBM
(6)
.......................................... 4KV
Operating Ratings
(2)
Input Voltage (V
IN
)................................. +1.7 to +5.5V
Junction Temperature (T
A
).............. –40°C to +125°C
Package Thermal Resistance
2x2 MLF (Θ
JA
).......................................... 90°C/W
2x2 MLF (Θ
JC
)
(3)
...................................... 45°C/W
Electrical Characteristics
V
IN
= 5V; T
A
= 25°C, bold values indicate –40°C< T
A
< +85°C, unless noted.
Symbol
V
EN_TH
I
EN
I
VIN
R
DS(ON)
Parameter
Enable Threshold Voltage
Enable Input Current
OFF State Leakage Current
P-Channel Drain to Source
On Resistance
Condition
V
IN
= 1.8V to 4.5V, I
D
= –250µA
V
IN
= 1.7V to 4.5V, I
D
= –250µA
V
IN
= V
EN
= 5.5V
V
IN
= +5.5V, V
EN
= 0V
V
IN
= +4.5V, ID = –100mA, V
EN
= 1.5V
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
V
IN
= +2.5V, ID = –100mA, V
EN
= 1.5V
V
IN
= +1.8V, ID = –100mA, V
EN
= 1.5V
V
IN
= +1.7V, ID = –100mA, V
EN
= 1.5V
R
SHUTDOWN
Turn-off Impedance
V
IN
= +3.6V, I
TEST
= 1mA, V
EN
= 0V
MIC94067, 69
85
100
145
155
165
200
Min
0.5
0.4
2
Typ
Max
1.2
1.2
4
1
115
140
200
215
225
300
Units
V
V
µA
µA
mΩ
mΩ
mΩ
mΩ
mΩ
Ω
Dynamic
Symbol
t
ON_DLY
Parameter
Turn-On Delay Time
Condition
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94066, 67
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94068, 69
t
ON_RISE
Turn-On Rise Time
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94066, 67
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94068, 69
t
OFF_DLY
Turn-Off Delay Time
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94066, 67
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94068, 69
100
200
ns
115
200
ns
500
800
1500
µs
0.5
1
5
µs
700
1200
µs
Min
Typ
0.85
Max
1.5
Units
µs
August 2006
3
M9999-082406
Micrel
MIC94066-69
Dynamic (cont.)
t
OFF_FALL
Turn-Off Fall Time
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94066, 67
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
MIC94068, 69
Notes:
1.
2.
3.
4.
5.
6.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
With backside thermal contact to PCB.
Pulse width <300µs with < 2% duty cycle.
Continuous body diode current conduction (reverse conduction, i.e. V
OUT
to V
IN
) is not recommended.
Devices are ESD sensitive. Handling precautions recommended. HBM (Human body model), 1.5k in series with 100pF.
60
60
100
100
ns
ns
August 2006
4
M9999-082406
微控制器 MCU
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