Micrel MIC94073 High side power switch Datasheet

MIC94070/71/72/73
High Side Power Switches
General Description
Features
The MIC94070-73 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
1.2A of continuous current. The MIC94071 and
MIC94073 feature an active load discharge circuit which
insures capacitive loads retain no charge when the main
switch is in an OFF state.
MIC94070-71 feature rapid turn on while MIC94072-73
provide a slew rate controlled Soft-Start turn-on of 800µs
(typical) to prevent in-rush current from glitching supply
rails.
An active pull-down on the enable input keeps
MIC94070-73 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.
MIC94070-73’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.
•
•
•
•
•
•
•
•
•
•
1.7V to 5.5V input voltage range
1.2A continuous operating current
3A pulse current
120mΩ RDSON (typical)
Built-in level shift for control logic; can be operated by
1.5V logic.
Low 2µA quiescent current
Soft-Start: MIC94072/73
Micro-power shutdown <1µA
Load discharge circuit: MIC94071, MIC94073
®
Space saving 1.2mm × 1.6mm 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
MIC94070, 72
Load Switch Application
MIC94071, 73
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
September 2007
M9999-090507
Micrel, Inc.
MIC94070/71/72/73
Ordering Information
(1)
Part Number
Part Marking
Standard
—
Pb-Free
MIC94070YC6
Standard
—
Pb-Free
—
MIC94071YC6
—
70P
71P
—
Fast
Turn On
SoftStart
Load
Discharge
Package
●
●
SC-70-6
SC-70-6
●
MIC94072YC6
—
72P
●
—
MIC94073YC6
—
73P
●
—
MIC94070YMT
—
P70
●
—
MIC94071YMT
—
P71
●
—
MIC94072YMT
—
P72
●
—
MIC94073YMT
—
P73
●
SC-70-6
SC-70-6
●
●
●
1.2mm x 1.6mm Thin MLF
®
1.2mm x 1.6mm Thin MLF
®
1.2mm x 1.6mm Thin MLF
®
1.2mm x 1.6mm Thin MLF
®
Notes
1.
Under-bar symbol on SC-70 Pb-free packages may not be to scale.
Pin Configuration
®
SC-70-6 (C6)
1.2x1.6 mm Thin MLF (MT)
Pin Description
Pin Number
Pin Name
Pin Function
SC-70
MLF
1
1
VOUT
Drain of P-channel MOSFET.
2,5
2
GND
Ground and the backside pad (MLF only) should both be connected to electrical ground.
4
3
VIN
Source of P-channel MOSFET.
3
4
EN
Enable (Input): Active-high CMOS compatible control input for switch A. Do not leave
floating.
6
--
NIC
No Internal Connection. A signal or voltage applied to this pin will have no effect on device
operation.
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MIC94070/71/72/73
Absolute Maximum Ratings (1)
Operating Ratings (2)
Input Voltage (VIN)................................................ +6V
Enable Voltage (VEN) .......................................... +6V
(3)
Continuous Drain Current (ID)
®
TA = 25°C (MLF ) ....................................... ±1.2A
TA = 25°C (SC-70) ...................................... ±1.2A
(4)
Pulsed Drain Current (IDP) ............................. ±3.0A
(4)
Continuous Diode Current (IS) ..................... –50mA
Storage Temperature (Ts) ............... –55°C to +150°C
(6)
ESD Rating – HBM ...........................................4KV
Input Voltage (VIN) ................................ +1.7 to +5.5V
Junction Temperature (TJ)...............–40°C to +125°C
Package Thermal Resistance
SC-70-6 (θJA) ........................................ 240°C/W
®
1.2mm × 1.6mm MLF (θJA).................. 172°C/W
®
(3)
1.2mm × 1.6mm MLF (θJC) .............. 134°C/W
Electrical Characteristics
TA = 25°C, bold values indicate –40°C< TA < +85°C, unless noted.
Symbol
Parameter
Condition
Min
VEN_TH
Enable Threshold Voltage
VIN = 1.8V to 4.5V, ID = –250µA
VIN = 1.7V to 4.5V, ID = –250µA
IQ
Supply Current
Max
Units
0.5
1.2
V
0.4
1.2
V
50nA
5
µA
2
4
µA
25nA
1
µA
50nA
1
µA
VIN = +5.0V, ID = –100mA, VEN = 1.5V
120
170
mΩ
VIN = +4.5V, ID = –100mA, VEN = 1.5V
130
185
mΩ
VIN = +3.6V, ID = –100mA, VEN = 1.5V
145
210
mΩ
VIN = +2.5V, ID = –100mA, VEN = 1.5V
165
225
mΩ
VIN = +1.8V, ID = –100mA, VEN = 1.5V
200
260
mΩ
VIN = +1.7V, ID = –100mA, VEN = 1.5V
210
285
mΩ
VIN = +5.0V, ID = –100mA, VEN = 1.5V
100
160
mΩ
VIN = +4.5V, ID = –100mA, VEN = 1.5V
110
165
mΩ
VIN = +3.6V, ID = –100mA, VEN = 1.5V
125
180
mΩ
VIN = +2.5V, ID = –100mA, VEN = 1.5V
145
200
mΩ
VIN = +1.8V, ID = –100mA, VEN = 1.5V
180
240
mΩ
VIN = +1.7V, ID = –100mA, VEN = 1.5V
190
265
mΩ
VIN = +3.6V, ITEST = 1mA, VEN = 0V
200
400
Ω
VIN = VEN = 5.5V, ID = OPEN
Typ
Measured on the VIN pin (7)
IEN
Enable Input Current
VIN = VEN = 5.5V, ID = OPEN
ISHUT-Q
Shutdown Current
VIN = +5.5V, VEN = 0V, ID = OPEN
Measured on the VIN pin (7)
ISHUT-SWITCH
OFF State Leakage Current
VIN = +5.5V, VEN = 0V, ID = SHORT
Measured on VOUT (7)
RDS(ON)
P-Channel Drain to Source
ON Resistance
SC-70 Package
RDS(ON)
P-Channel Drain to Source
ON Resistance
MLF Package
RSHUTDOWN
Turn-Off Resistance
MIC94071, 73
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MIC94070/71/72/73
Electrical Characteristics (Dynamic)
VIN = 5V; TA = 25°C, bold values indicate –40°C< TA < +85°C, unless noted.
Symbol
Parameter
Condition
Min
tON_DLY
Turn-On Delay Time
VIN = +3.6V, ID = –100mA, VEN = 1.5V
Typ
Max
Units
0.85
1.5
µs
700
1200
µs
0.5
1
5
µs
500
800
1500
µs
100
200
ns
60
200
ns
60
100
ns
60
100
ns
MIC94070, 71
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94072, 73
tON_RISE
Turn-On Rise Time
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94070, 71
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94072, 73
tOFF_DLY
Turn-Off Delay Time
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94070, 71
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94072, 73
tOFF_FALL
Turn-Off Fall Time
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94070, 71
VIN = +3.6V, ID = –100mA, VEN = 1.5V
MIC94072, 73
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.
4.
Pulse width <300µs with < 2% duty cycle.
5.
Continuous body diode current conduction (reverse conduction, i.e. VOUT to VIN) is not recommended.
6.
Devices are ESD sensitive. Handling precautions recommended. HBM (Human body model), 1.5k in series with 100pF.
7.
Measured on the MIC94070YMT, for other part numbers, please contact Micrel.
September 2007
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Micrel, Inc.
MIC94070/71/72/73
Typical Characteristics
September 2007
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Micrel, Inc.
MIC94070/71/72/73
Functional Characteristics
MIC94070
September 2007
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Micrel, Inc.
MIC94070/71/72/73
MIC94071
September 2007
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Micrel, Inc.
MIC94070/71/72/73
MIC94072
September 2007
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Micrel, Inc.
MIC94070/71/72/73
MIC94073
September 2007
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Micrel, Inc.
MIC94070/71/72/73
Package Information
6-Pin SC-70 (C6)
®
4-Pin Thin MLF (MT)
September 2007
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Micrel, Inc.
MIC94070/71/72/73
Recommended Land Pattern for MLF 1.2x1.6 4 Lead
Optional for maximum thermal performance. Heatsink should be connected to GND plane of PCB for maximum thermal performance.
Disclaimer: This is only a recommendation based on information available to Micrel from its suppliers. Actual land pattern may have to be
significantly different due to various materials and processes used in PCB assembly. Micrel makes no representation or warranty of
performance based on the recommended land pattern."
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2007 Micrel, Incorporated.
September 2007
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