MP62071
3.3V/5V, Single-Channel 0.8A
Current-Limited Power Distribution Switch
MP62071 Rev. 0.9 www.MonolithicPower.com 1
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© 2009 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP62071 Power Distribution Switch features
internal current limiting to prevent damage to host
devices due to faulty load conditions. The MP62071
operates from a 3.3V or 5V nominal input voltage
and includes a 90m Power MOSFET to handle up
to 0.8A continuous load with a 1.25A typical current
limit. The MP62071 has built-in protection for both
over current and increased thermal stress. For over-
current protection (OCP), the device will limit the
current by going into a constant current mode.
When continuous output overload condition exceeds
power dissipation of the package, the thermal
protection will shut the part off. The device will
recover once the device temperature reduces to
approx 120°C.
The MP62071 is available in 8-PIN MSOP8E and
SOIC8E package with exposed pad.
FEATURES
• 0.8A Continuous Current
• Accurate Current Limit
• 2.7V to 5.5V Supply Range
• 140uA Quiescent Current
• 90m MOSFET
• Thermal-Shutdown Protection
• Under-Voltage Lockout
• 8ms FLAG Deglitch Time
• No FLAG Glitch During Power Up
• Reverse Current Blocking
• MSOP8E and SOIC8E package
• UL Recognized: E322138
APPLICATIONS
• Notebook PC
• Set-top-box
• Telecom and Network Systems
• PC Card Hot Swap
• USB Power Distribution
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
OUT
MP62071
SINGLE-CHANNEL
1
2,3
45
6,7,8
3.3V/5V Input
To VBUS
USB Ports
FLAG
IN
GND
EN
UL Recognized Component
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 2
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© 2009 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number Enable Switch Maximum
Continuous
Load Current
Typical Short-
Circuit Current
@ TA=25C Package Temperature
MP62071DH Active High Single 0.8A 1.25A MSOP8E
–40°C to +85°C
MP62071DN Active High Single 0.8A 1.25A SOIC8E –40°C to +85°C
For Tape & Reel, add suffix –Z (eg. MP62071DN–Z); For RoHS Compliant Packaging, add suffix –LF(eg.
MP62071DN–LF–Z)
PACKAGE REFERENCE
1
2
3
4
8
7
6
5
TOP VIEW
GND
IN
IN
EN
OUT
OUT
OUT
FLAG
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
GND
IN
IN
EN
OUT
OUT
OUT
FLAG
1
2
3
4
8
7
6
5
TOP VIEW
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
MSOP8E SOIC8E
MP62071
Single-Channel
ABSOLUTE MAXIMUM RATINGS (1)
IN ....................................................-0.3V to +6V
ON, FLAG, OUT to GND.................-0.3V to +6V
Continuous Power Dissipation (TA = +25°C) (2)
MSOP8E.................................................... 2.3W
SOIC8E...................................................... 2.5W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature...............–65°C to +150°C
Operating Temperature..............–40°C to +85°C
Thermal Resistance (3) θJA θJC
MSOP8E................................. 55 ...... 12... °C/W
SOIC8E .................................. 50 ...... 10... °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 TJ(MAX), the junction-to-
ambient thermal resistance JA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-
TA)/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..
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 3
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© 2009 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS (4)
VIN=5V, TA=+25°C, unless otherwise noted.
Parameter Condition Min Typ Max Units
IN Voltage Range 2.7 5.5 V
Supply Current EN=High, IOUT=0 140 160 A
Shutdown Current Device Disable, VOUT=float, VIN=5.5V 1 A
Off Switch Leakage Device Disable, VIN=5.5V 1 A
Current Limit 1000 1250 1500 mA
Trip Current Current Ramp (slew rate100A/s) on
Output 1.45 1.9 A
Under-voltage Lockout Rising Edge 1.95 2.65 V
Under-voltage Hysteresis 250 mV
FET On Resistance IOUT=100mA and -40°C<TA<85°C 90 130 m
EN Input Logic High Voltage 2 V
EN Input Logic Low Voltage 0.8 V
FLAG Output Logic Low Voltage ISINK=5mA 0.4 V
FLAG Output High Leakage
Current VIN=VFLAG=5.5V 1 A
Thermal Shutdown 140 °C
Thermal Shutdown Hysteresis 20 °C
VIN=5.5V, CL=1uF, RL=5 0.9 ms
VOUT Rising Time, Tr (5) VIN=2.7V, CL=1uF, RL=5 1.7 ms
VIN=5.5V, CL=1uF, RL=5 0.5 ms
VOUT Falling Time, Tf (5) VIN=2.7V, CL=1uF, RL=5 0.5 ms
Turn On Time, Ton (6) CL=100F, RL=5 3 ms
Turn Off Time, Toff (6) CL=100F, RL=5 10 ms
FLAG Deglitch Time 4 8 15 ms
EN Input Leakage 1 A
Reverse Leakage Current OUT=5.5V, IN=GND 0.2 A
NOTE:
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 (50%) EN signal to (90%) output signal.
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 4
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© 2009 MPS. All Rights Reserved.
PIN FUNCTIONS
MSOP8E
SOIC8E Name Description
1 GND Ground.
2, 3 IN Input Voltage. Accepts 2.7V to 5.5V input.
4 EN Active High.
5 FLAG IN-to-OUT Over-current, active-low output flag. Open-Drain.
6, 7, 8 OUT IN-to-OUT Power-Distribution Output (for all 3 output pins).
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25ºC, unless otherwise noted.
V
I
(EN
X
)
VI(ENX)
V
O
(OUT
X
)
OUT
X
RL CL
V
O
(OUT
X
)
VO(OUTX)
50% 50% 50% 50%
90% 90%
90% 90%
10%
10% 10%
10%
t
on
t
r
t
f
ton
t
off toff
VOLTAGE WAVEFORMS
TEST CIRCUIT
Figure 1—Test Circuit and Voltage Waveforms
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 5
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TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25ºC, VIN=5V,VEN=5V,CL=2.2uF, unless otherwise noted.
INPUT VOTAGE (V) INPUT VOTAGE (V)
TURN ON DELAY (ms)
TURN OFF DELAY (ms)
3.5 4.5 5.5 65342.5 2.5 3 3.5 4 4.5 5 5.5 6
2.5 3 3.5 4 4.5 5 5.5 6
Current Limit Response
Time vs. Peak Current
INPUT VOLTAGE (V)
2 2.5 3 3.5 4 4.5 5 5.5 6
PEAK CURRENT (A)
CURRENT LIMIT (A)
0
20
40
60
80
100
120
140
0 0.2 0.4 0.6 0.8 1 1.2
OUTPUT CURRENT (A)
INPUT TO OUTPUT VOLTAGE (mV)
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
STATIC DRAIN-SOURCE ON-STATE
Supply Current, Output
Enabled vs. Input Voltage
Input to Output Voltage
vs. Load Current
INPUT VOLTAGE (V)
INPUT VOTAGE (V)
Static Drain-Source On-State
Resistance vs. Input Voltage
I
OUT
=0.8 A
Current Limit vs. Input Voltage Threshold Trip Current
vs. Input Voltage
0
0.5
1
1.5
2
2.5
3
2.5 3 3.5 4 4.5 5 5.5 6
0
0.05
0.1
0.15
0.2
0.25
0.3
100
110
120
130
140
150
70
80
90
100
110
120
130
140
Vin=5V
Vin=3.3V
Vin=4.5V
Vin=5.5V
Vin=2.7V
0.95
1.05
1.15
1.25
1.35
1.45
1
1.1
1.2
1.3
1.4
1.5
1.6
THRESHOLD TRIP CURRENT (A)
0
5
10
15
20
25
30
35
02468101214
Static Drain-Source On-State
Resistance Variation vs.
Ambient Temperature
IO=0.1A
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
-45 -30 -15 0 15 30 45 60 75 90
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 6
9/18/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25ºC, VIN=5V, VEN=5V, CL=2.2uF, unless otherwise noted. (continued)
Ramped Load on
Enabled Device
2ms/div 1ms/div 2ms/div
EN
5V/div
V
OUT
2V/div
EN
5V/div
V
OUT
2V/div
EN
5V/div
V
OUT
2V/div
EN
5V/div
V
OUT
2V/div
Short Circuit Current,
Device Enabled into Short
I
OUT
500mA/div
EN
5V/div
Threshold Trip Current with
Ramped Load on Enabled Device
I
OUT
500mA/div
V
OUT
2V/div
I
OUT
500mA/div
Flag
5V/div
EN
5V/div
I
OUT
500mA/div
I
OUT
1A/div
Flag
5V/div
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 7
9/18/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
FUNCTION BLOCK DIAGRAM
Vref
Deglitch
Logic
Charge
Pump
GND
Thermal
Sense
UVLO
IN
EN FLAG
OUT
Current
Sense
AMP
--
--
--
--
--
--
--
--
--
--
--
----
--
+
+
--
Figure2—Functional Block Diagram
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 8
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© 2009 MPS. All Rights Reserved.
DETAILED DESCRIPTION
Over Current
When the load exceeds trip current (minimum
threshold current triggering constant-current
mode) or a short is present, MP62071 switches
into to a constant-current mode (current limit
value). MP62071 will be shutdown only if the
over current condition stays long enough to
trigger thermal protection.
Trigger over current protection for different
overload conditions occurring in applications:
1) The output has been shorted or overloaded
before the device is enabled or input applied.
MP62071 detects the short or overload and
immediately switches into a constant-current
mode.
2) A short or an overload occurs after the device
is enabled. After the current-limit circuit has
been tripped (reached the trip current
threshold), the device switches into constant-
current mode. However, high current may
flow for a short period of time before the
current-limit circuit can react.
3）Output current has been gradually increased
beyond the recommended operating current.
The load current rises until the trip current
threshold is reached or until the thermal limit
of the device is exceeded. MP62071 is
capable of delivering current up to the trip
current threshold without damaging the
device. Once the trip threshold has been
reached, the device switches into its constant-
current mode.
Flag Response
The FLAG pin is an open drain configuration.
This FAULT will report a fail mode after 8ms
deglitch timeout. This is used to ensure that no
false fault signals are reported. This internal
deglitch circuit eliminates the need for extend
components. The FLAG pin is not deglitched
during over temperature or voltage lockout.
Thermal Protection
The purpose of thermal protection is to prevent
damage in the IC by allowing exceptive current to
flow and heating the junction. The die
temperature is internally monitored until the
thermal limit is reached. Once this temperature is
reached, the switch will turn off and allow the
chip to cool. The switch has a built-in hysteresis.
Under-voltage Lockout (UVLO)
This circuit is used to monitor the input voltage to
ensure that the MP62071 is operating correctly.
This UVLO circuit also ensures that there is no
operation until the input voltage reaches the
minimum spec.
Enable
The logic pin disables the switch to reduce
overall supply current .Once the EN pin reaches
Logic HIGH, the MP62071 is enabled.
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 9
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© 2009 MPS. All Rights Reserved.
APPLICATION INFORMATION
Power-Supply Considerations
Over 10F capacitor between IN and GND is
recommended.
This precaution reduces power-supply transients
that may cause ringing on the input and improves
the immunity of the device to short-circuit
transients.
In order to achieve smaller output load transient
ripple, placing a high-value electrolytic capacitor
on the output pin(s) is recommended when the
load is heavy.
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
MP62071 Rev. 0.9 www.MonolithicPower.com 10
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© 2009 MPS. All Rights Reserved.
PACKAGE INFORMATION
MSOP8E (EXPOSED PAD)
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS
IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR
PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) PIN 1 IDENTIFICATION HAS HALF OR FULL CIRCLE OPTION.
6) DRAWING MEETS JEDEC MO-187, VARIATION AA-T.
7) DRAWING IS NOT TO SCALE.
0.030(0.75)
0.037(0.95) 0.043(1.10)MAX
0.002(0.05)
0.006(0.15)
FRONT VIEW
SEATING PLANE
PIN 1 ID
(NOTE 5)
0.114(2.90)
0.122(3.10) 0.187(4.75)
0.199(5.05)
14
5
8
0.010(0.25)
0.014(0.35) 0.0256(0.65)BSC
0.114(2.90)
0.122(3.10)
TOP VIEW
0.004(0.10)
0.008(0.20)
SIDE VIEW
GAUGE PLANE
0.010(0.25)
0.016(0.40)
0.026(0.65)
0
o
-6
o
RECOMMENDED LAND PATTERN
0.016(0.40) 0.0256(0.65)BSC
0.100(2.54)
0.181(4.60)
0.075(1.90)
0.040(1.00)
Exposed Pad
BOTTOM VIEW
0.087(2.20)
0.099(2.50)
0.062(1.58)
0.074(1.88)
MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MP62071 Rev. 0.9 www.MonolithicPower.com 11
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© 2009 MPS. All Rights Reserved.
SOIC8E (EXPOSED PAD)
SEE DETAIL "A"
0.0075(0.19)
0.0098(0.25)
0.050(1.27)
BSC
0.013(0.33)
0.020(0.51)
SEATING PLANE
0.000(0.00)
0.006(0.15)
0.051(1.30)
0.067(1.70)
TOP VIEW
FRONT VIEW
SIDE VIEW
BOTTOM VIEW
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION BA.
6) DRAWING IS NOT TO SCALE.
0.089(2.26)
0.101(2.56)
0.124(3.15)
0.136(3.45)
RECOMMENDED LAND PATTERN
0.213(5.40)
0.063(1.60)
0.050(1.27)
0.024(0.61)
0.103(2.62)
0.138(3.51)
0.150(3.80)
0.157(4.00)
PIN 1 ID
0.189(4.80)
0.197(5.00)
0.228(5.80)
0.244(6.20)
14
85
0.016(0.41)
0.050(1.27)
0
o
-8
o
DETAIL "A"
0.010(0.25)
0.020(0.50) x 45
o
0.010(0.25) BSC
GAUGE PLANE
