MP6231/MP6232
3.3V/5V, Dual-Channel 500mA
Current-Limited Power Distribution Switches
The Future of Analog IC Technology
DESCRIPTION
The MP6231/MP6232 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP6231/MP6232 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
MP6231/MP6232 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 MP6231/MP6232 is available in 8-pin
MSOP and SOIC package with exposed pad.
FEATURES
•
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•
•
•
•
•
•
•
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•
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500mA Continuous Current
Accurate Current Limit
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 File # E322138
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 Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
+5V
1 GND
2 IN
FLAG1 8
7
OUT1
To USB Controller
Output 1
3
4
MP6232
EN1
EN2
OUT2
6
Output 2
FLAG2 5
UL Recognized Component
MP6231/MP6232 Rev. 1.1
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
MP6231/MP6232 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ORDERING INFORMATION
Part Number
MP6231DN
MP6231DH
MP6232DN
MP6232DH
Enable
Active
High
Active
Low
Switch
Maximum
Typical Short-
Continuous Circuit Current
Load Current
@ T
A
=25C
0.5A
750mA
Package
Top
Marking
Temperature
Dual
SOIC8E MP6231DN
MSOP8E
6231D
–40°C to +85°C
SOIC8E MP6232DN
MSOP8E
6232D
* For Tape & Reel, add suffix –Z (g. MP2670DQ–Z).For RoHS compliant packaging, add suffix –LF (e.g.
MP2670DQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
GND
IN
EN1*
EN2*
1
2
3
4
8
7
6
5
FLAG1
OUT1
OUT2
FLAG2
EXPOSED PAD
ON BACKSIDE
MP6231/MP6232
Dual-Channel
(* EN is active high for MP6231)
ABSOLUTE MAXIMUM RATINGS
(1)
IN .................................................-0.3V to +6.0V
EN, FLAG, OUT to GND ..............-0.3V to +6.0V
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature...............
–
65°C to +150°C
Operating Temperature..............
–
40°C to +85°C
Thermal Resistance
(2)
SOIC8E .................................. 50 ...... 10...
°C/W
MSOP8E................................. 55 ...... 12...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) Measured on JESD51-7， 4-layer PCB.
θ
JA
θ
JC
MP6231/MP6232 Rev. 1.1
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
2
MP6231/MP6232 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ELECTRICAL CHARACTERISTICS
(3)
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
V
OUT
Falling Time, Tf
Turn On Time, Ton
Turn Off Time, Toff
FLAG Deglitch Time
ENx Input Leakage
Reverse Leakage Current
Current Ramp (slew rate≤100A/s) on
Output
Rising Edge
I
OUT
=100mA , and -40
°
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
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
1.2
1.95
250
85
Condition
Min
2.7
90
140
1
1
1100
1.6
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
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:
3) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
MP6231/MP6232 Rev. 1.1
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
3
MP6231/MP6232 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
PIN FUNCTIONS
MP6231/MP6232
SOIC8
MSOP8E
1
2
3
4
5
6
7
Name
GND
IN
Description
Ground.
Input Voltage. Accepts 2.7V to 5.5V input.
Active Low: (MP6232), Active High: (MP6231)
Active Low: (MP6232), Active High: (MP6231)
EN1
EN2
FLAG2
IN-to-OUT2 Over-current, active-low output flag. Open-Drain.
OUT2
OUT1
IN-to-OUT2 Power-Distribution Switch Output.
IN-to-OUT1 Power-Distribution Switch Output
8
FLAG1
IN-to-OUT1 Over-current, active-low output flag. Open-Drain.
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
MP6231/MP6232 Rev. 1.1
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
4
MP6231/MP6232 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=5.5V, C
L
= 1µF, T
A
= +25ºC, unless otherwise noted.
Supply Current, Output Enabled
vs. Input Voltage
4
TURN OFF DELAY (ms)
3.5
TURN ON DELAY (ms)
3
2.5
2
1.5
1
0.5
0
2.5
3
3.5
4
4.5
5
5.5
6
1.2
1
0.8
0.6
0.4
0.2
0
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
V
EN
=5V
120
100
80
60
40
20
0
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
Static Drain-Source On-State
Resistance Variation vs.
Ambient Temperature
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-45 -30 -15 0
Static Drain-Source
On-State Resistance vs.
Input Voltage
INPUT TO OUTPUT VOLTAGE (mV)
140
130
120
110
100
90
80
Input to Output Voltage vs.
Load Current
V
EN
=5V
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=5.5V
Vin=5V
Vin=2.7V
Vin=3.3V
Vin=4.5V
I
O
=0.1A, V
IN
=5V
V
EN
=5V, I
OUT
=0.5A
15 30 45 60 75 90
70
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
V
EN
=5V
THRESHOLD TRIP CURRENT (A)
0.9
0.85
CURRENT LIMIT (A)
0.8
0.75
0.7
0.65
0.6
2.5
1.5
1.4
1.3
1.2
1.1
1
0.9
Threshold Trip Current vs.
Input Voltage
V
EN
=5V
45
40
35
30
25
20
15
10
5
0
3
3.5
4
4.5
5
5.5
6
Current Limit Response Time
vs. Peak Current
V
EN
=5V
3
3.5
4
4.5
5
5.5
6
0.8
2.5
0
2
4
6
8
10
12
14
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
PEAK CURRENT (A)
MP6231/MP6232 Rev. 1.1
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5
