MIC94064/5
High Side Power Switches
General Description
The MIC94064 and MIC94065 are high-side load
switches designed for operation between 1.7V to 5.5V.
The devices contain a low on-resistance P-channel
MOSFET that supports over 2A of continuous current.
The MIC94064/5 provides a slew rate controlled Soft-
Start turn-on of 115µs (typical) to prevent in-rush current
from glitching supply rails.
The MIC94065 features 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
MIC94064/5 in a default OFF state until the EN pin is
pulled to a high level. Built-in level shift circuitry allows
low voltage logic signals to switch higher supply
voltages, or vice versa; high level logic signals can
control low level voltages.
The MIC94064/5’s operating 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
77mΩ (typ) R
DSON
Built-in level shift for control logic; can be operated by
1.5V logic.
Low 2µA quiescent current
Soft-Start: 115µs
Micro-power shutdown <1µA
Load discharge circuit: MIC94065
Space saving 1.2x1.6 mm Thin MLF
®
package
Applications
•
Load switch in portable applications:
-
Cellular phones
-
PDAs
-
MP3 players
-
Digital Cameras
-
Portable instrumentation
•
Battery switch-over circuits
•
Level translator
________________________________________________________________________________________________________
Typical Application
MIC94064
Load Switch Application
MIC94065
Load Switch with Capacitive Load Discharge
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technologies, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
January 2008
M9999-011608
Micrel, Inc.
MIC94064/5
Ordering Information
Part Number
Standard
—
—
—
—
Notes
1.
Underbar symbol on SC-70 Pb-free packages may not be to scale.
Part Marking
(1)
(1)
(1)
Pb-Free
MIC94064YC6
MIC94065YC6
Standard
—
—
—
—
Pb-Free
64P
6P5
P64
P65
Soft-Start
●
●
●
●
Load Discharge
Package
SC-70-6
1.2mm x 1.6mm
Thin MLF
®
●
●
MIC94064YMT
MIC94065YMT
Pin Configuration
SC-70-6 (C6)
1.2x1.6 mm Thin MLF
®
(MT)
Pin Description
Pin Number
SC-70
1
2,5
4
3
6
MLF
1
2
3
4
--
Pin Name
V
OUT
GND
V
IN
EN
NIC
Pin Function
Drain of P-channel MOSFET.
Ground and the backside pad (MLF only) should both be connected to electrical ground.
Source of P-channel MOSFET.
Enable (Input): Active-high CMOS compatible control input for switch A. Do not leave
floating.
No Internal Connection. A signal or voltage applied to this pin will have no effect on device
operation.
January 2008
2
M9999-011608
Micrel, Inc.
MIC94064/5
Absolute Maximum Ratings
(1)
Input Voltage (V
IN
) ................................................+6V
Enable Voltage (V
EN
) ...........................................+6V
Continuous Drain Current (I
D
)
(3)
T
A
= 25°C ....................................................... ±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
SC-70-6 (θ
JA
)......................................... 240°C/W
®
1.2x1.6 MLF (θ
JA
) ................................ 172°C/W
®
1.2x1.6 MLF (θ
JC
)
(3)
........................... 134°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
SC-70 Package
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
DS(ON)
P-Channel Drain to Source
ON Resistance
MLF Package
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 Resistance
V
IN
= +3.6V, I
TEST
= 1mA, V
EN
= 0V
MIC94065
77
85
100
145
155
85
100
145
155
165
200
Min
0.5
0.4
2
Typ
Max
1.2
1.2
4
1
110
115
140
200
215
115
140
200
215
225
300
Units
V
V
µA
µA
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
Ω
Dynamic
Symbol
t
ON_DLY
t
ON_RISE
t
OFF_DLY
t
OFF_FALL
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.
Parameter
Turn-On Delay Time
Turn-On Rise Time
Turn-Off Delay Time
Turn-Off Fall Time
Condition
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
V
IN
= +3.6V, ID = –100mA, V
EN
= 1.5V
Min
80
75
Typ
125
115
100
25
Max
170
150
200
100
Units
µs
µs
ns
ns
January 2008
3
M9999-011608
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
