MP62350/MP62351
The Future of Analog IC Technology
3.3V/5V, Dual-Channel, 500mA
Current-Limited Power Distribution Switches
With Output Discharge
DESCRIPTION
The MP62350/MP62351 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62350/MP62351
analog switch has 85mΩ on-resistance and
operates from 2.7V to 5.5V input. It is available
with guaranteed current limits, making it ideal
for
load
switching
applications.
The
MP62350/MP62351 has built-in protection for
both over current and increased thermal stress.
For over current, the device will limit the current
by changing to a constant current mode.
As the temperature increases as a result of
short circuit, then the device will shut off. The
device will recover once the device temperature
reduces to approx 120°C.
The MP62350/MP62351 included a discharge
function that provides a resistive discharge path
for the external output capacitor when the part
is disabled.
The MP62350/MP62351 is available in 8-pin
MSOP and SOIC packages.
FEATURES
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500mA Continuous Current
Accurate Current Limit
Output Discharge Function
2.7V to 5.5V Supply Range
140uA Quiescent Current
85mΩ MOSFET
Thermal-Shutdown Protection
Under-Voltage Lockout
8ms FLAG Deglitch Time
No FLAG Glitch During Power Up
Reverse Current Blocking
Active High & Active Low Options
UL Recognized: Pending
Smartphone and PDA
Portable GPS Device
Notebook PC
Set-top-box
Telecom and Network Systems
PC Card Hot Swap
USB Power Distribution
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
+5V
6 GND
7 IN
FLAG1 2
8
OUT1
To USB Controller
Output 1
MP62350
1
4
EN1
EN2
OUT2
5
Output 2
FLAG2 3
DUAL-CHANNEL
MP62350/MP62351 Rev. 0.91
www.MonolithicPower.com
9/18/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ORDERING INFORMATION
Part Number
MP62351ES
MP62351EK
MP62350ES
MP62350EK
Enable
Active High
Active High
Active Low
Active Low
Switch
Dual
Dual
Dual
Dual
Maximum
Continuous
Load Current
0.5A
0.5A
0.5A
0.5A
Typical Short-
Circuit Current
@ T
A
=25C
750mA
750mA
750mA
750mA
Package
SOIC8
MSOP8
SOIC8
MSOP8
Temperature
–20°C to +85°C
* For Tape & Reel, add suffix –Z (eg. MP62350/MP62351ES–Z). For RoHS Compliant Packaging, add suffix –LF
(eg. MP62350/MP62351ES–LF–Z)
PACKAGE REFERENCE
TOP VIEW
EN1*
FLAG1
FLAG2
EN2*
1
2
3
4
8
7
6
5
OUT1
IN
GND
OUT2
TOP VIEW
EN1*
FLAG1
FLAG2
EN2*
1
2
3
4
8
7
6
5
OUT1
IN
GND
OUT2
MSOP8
*: EN is active high for MP62351
SOIC8
ABSOLUTE MAXIMUM RATINGS
(1)
IN .................................................-0.3V to +6.0V
EN, FLAG, OUT to GND ..............-0.3V to +6.0V
Continuous Power Dissipation (T
A
= +25°C)
(2)
SOIC8……………………………………......1.4W
MSOP8……………………………………....0.8W
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature...............
–
65°C to +150°C
Operating Temperature..............
–
20°C to +85°C
Thermal Resistance
(3)
SOIC8..................................... 90 ...... 42...
°C/W
MSOP8 .................................. 150 ..... 65...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX)=(T
J
(MAX)-
T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) Measured on JESD51-7, 4-layer PCB.
θ
JA
θ
JC
MP62350/MP62351 Rev. 0.91
www.MonolithicPower.com
9/18/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
2
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ELECTRICAL CHARACTERISTICS
(4)
V
IN
=5V, T
A
=+25°C, unless otherwise noted.
Parameter
IN Voltage Range
Supply Current
Supply Current
Shutdown Current
Off Switch Leakage
Current Limit
Trip Current
Under-voltage Lockout
Under-voltage Hysteresis
FET On Resistance
EN Input Logic High Voltage
EN Input Logic Low Voltage
FLAG Output Logic Low Voltage
FLAG Output High Leakage
Current
Thermal Shutdown
Thermal Shutdown Hysteresis
V
OUT
Rising Time, Tr
(5)
V
OUT
Falling Time, Tf
(6)
Turn On Time, Ton
(7)
Turn Off Time, Toff
(8)
Discharge Resistance
FLAG Deglitch Time
ENx Input Leakage
Reverse Leakage Current
Current Ramp (slew rate≤100A/s) on
Output
Rising Edge
I
OUT
=100mA ( -20°C≤T
A
≤85°C)
2
I
SINK
=5mA
V
IN
=V
FLAG
=5.5V
140
20
0.9
1.7
0.5
0.5
3
10
4
OUTX=5.5V, IN=GND
100
8
1
0.2
15
0.8
0.4
1
One Channel Enabled, I
OUT
=0, One
Switch ON
Both Channels Enabled, I
OUT
=0, Both
Switches ON
Device Disable, V
OUT
=float, V
IN
=5.5V
Device Disable, V
IN
=5.5V
550
1
1.95
250
85
Condition
Min
2.7
90
140
1
1
1100
1.4
2.65
130
Typ
Max
5.5
120
160
Units
V
μA
μA
μA
μA
mA
A
V
mV
mΩ
V
V
V
μA
°C
°C
ms
ms
ms
ms
ms
ms
Ω
ms
μA
μA
V
IN
=5.5V, CL=1uF, RL=11Ω
V
IN
=2.7V, CL=1uF, RL=11Ω
V
IN
=5.5V, CL=1uF, RL=11Ω
V
IN
=2.7V, CL=1uF, RL=11Ω
C
L
=100μF, RL=11Ω
C
L
=100μF, RL=11Ω
Notes:
4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
5) Measured from 10% to 90%.
6) Measured from 90% to 10%.
7) Measured from (50%) EN signal to (90%) output signal.
8) Measured from (50%) EN signal to (10%) output signal.
MP62350/MP62351 Rev. 0.91
www.MonolithicPower.com
9/18/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
3
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
PIN FUNCTIONS
MP62350/MP62351
Pin#
1
2
3
4
5
6
7
8
Name
Description
Active Low: (MP62350), Active High: (MP62351)
IN-to-OUT1 Over-current, active-low output flag. Open-Drain.
IN-to-OUT2 Over-current, active-low output flag. Open-Drain.
Active Low: (MP62350), Active High: (MP62351)
IN-to-OUT2 Power-Distribution Switch Output.
Ground.
Input Voltage. Accepts 2.7V to 5.5V input.
IN-to-OUT1 Power-Distribution Switch Output
EN1
FLAG1
FLAG2
EN2
OUT2
GND
IN
OUT1
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= +25ºC, unless otherwise noted.
OUT
X
RL
CL
V
O
(OUT
X
)
t
r
90%
10%
90%
10%
t
f
TEST CIRCUIT
50%
V
I
(EN
X
)
50%
VI(ENX)
50%
50%
t
on
V
O
(OUT
X
)
90%
10%
t
off
VO(OUTX)
ton
90%
10%
toff
VOLTAGE WAVEFORMS
Figure 1—Test Circuit and Voltage Waveforms
MP62350/MP62351 Rev. 0.91
www.MonolithicPower.com
9/18/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
4
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=5V, V
EN
=0V, C
L
=1uF, T
A
= +25ºC, unless otherwise noted.
3.5
TURN OFF DELAY (ms)
TURN ON DELAY (ms)
2.7
2.6
2.5
2.4
2.3
2.2
1.6
1.5
RISE TIME(ms)
3
2.5
2
1.5
1
2.5
3
3.5 4 4.5 5
INPUT VOTAGE (V)
5.5
6
1.4
1.3
1.2
1.1
1
0.9
0.8
2.5
3
3.5 4 4.5 5
INPUT VOTAGE (V)
5.5
6
2.5
3
3.5 4 4.5 5 5.5
INPUT VOTAGE (V)
6
Supply Current, Output
Enabled vs. Input Voltage
55
SUPPLY CURRENT (uA)
Static Drain-Source
On-State Resistance Variation
vs. Ambient Temperature
STATIC DRAIN-SOURCE ON-STATE
RESISTANCE VARIATION (%)
110
100
90
80
70
60
2.5
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
6
FALL TIME (us)
50
45
40
35
30
2.5
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
6
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-30 -15 0
I
OUT
=0.1A
15 30 45 60 75 90
Static Drain-Source
On-State Resistance
vs. Input Voltage
INPUT TO OUTPUT VOLTAGE (mV)
Input to Output Voltage
vs. Load Current
90
80
70
60
50
40
30
20
10
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
OUTPUT CURRENT (A)
Vin=3.3V
Vin=5.5V
Vin=5V
Vin=4V
Current Limit vs.
Input Voltage
0.9
140
130
120
110
100
90
80
70
I
OUT
=0.5A
CURRENT LIMIT (A)
Vin=2.7V
0.85
0.8
0.75
0.7
0.65
2.5
2.5
3
3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
6
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
MP62350/MP62351 Rev. 0.91
www.MonolithicPower.com
9/18/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5