MP62260-1/MP62261-1
3.3V/5V, Single-Channel 2A
Current-Limited Power Distribution Switch
with Output Discharge
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 1
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The Future of Analog IC Technology
DESCRIPTION
The MP62260-1/MP62261-1 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62260-1/MP62261-1
operates from 2.7V to 5.5V nominal input
voltage and includes a 45m Power MOSFET
to handle up to 2A continuous load with a 3A
typical current limit. The MP62260-1/MP62261-
1 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 MP62260-1/MP62261-1 involves output
discharge function that provides a resistive
discharge path for the external output capacitor
when the part is disabled.
The MP62260-1/MP62261-1 is available in
SOIC8 package.
FEATURES
• 2A Continuous Current
• 3A Accurate Current Limit
• Output Discharge Function
• 2.7V to 5.5V Supply Range
• 90uA Quiescent Current
• 45m 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
• SOIC8 Package
APPLICATIONS
• Smartphone and PDA
• Portable GPS Device
• 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 Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP62260-1/
MP62261-1
*
(*is active high for MP62261-1)
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 2
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ORDERING INFORMATION
Part Number Enable Switch Maximum
Continuous
Load Current
Typical Sh ort-
Circuit Current
@ TA=25°C Package Top
Marking Free Air
Temperature (TA)
MP62260DS-1* Active Low Single 2A 3A SOIC8 62260DS1 -40°C to +85°C
MP62261DS-1 Active High Single 2A 3A SOIC8 62261DS1 -40°C to +85°C
* For Tape & Reel, add suffix –Z (eg. MP62260DS-1–Z).
For RoHS Compliant Packaging, add suffix –LF (eg. MP62260DS-1–LF–Z)
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
IN .................................................-0.3V to +6.0V
EN, FLAG, OUT to GND ..............-0.3V to +6.0V
Continuous Power Dissipation (TA = +25°C) (2)
SOIC8 ........................................................ 1.4W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature............... -65°C to +150°C
Operating Junct. Temp (TJ)...... -40°C to +125°C
Thermal Resistance (3) θJA θJC
SOIC8..................................... 90 ...... 42... °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.
GND
IN
IN
EN*
OUT
OUT
OUT
FLAG
1
2
3
4
8
7
6
5
TOP VIEW
SOIC8
MP62260-1/MP62261-1
Single-Channel
(*is active high for MP62261-1)
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 3
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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 Device Enabled, IOUT=0 90 120 µA
Shutdown Current Device Disabled, VOUT=float, VIN=5.5V 1 µA
Off Switch Leakage Device Disabled, VIN=5.5V 1 µA
Current Limit 2.2 3 3.8 A
Trip Current Current Ramp (slew rate≤100A/s) on
Output 3.3 4.3 A
Under-voltage Lockout Rising Edge 1.95 2.30 2.65 V
Under-voltage Hysteresis 250 mV
FET On Resistance IOUT=100mA and -40°C≤TA≤85°C 45 70 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 µA
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 (6)
VIN=2.7V, CL=1uF, RL=5 0.5 ms
Turn On Time, Ton (7) CL=100µF, RL=5 3 ms
Turn Off Time, Toff (8) CL=100µF, RL=5 10 ms
Discharge Resistance 100
FLAG Deglitch Time 4 8 15 ms
EN Input Leakage -1 µA
Reverse Leakage Current VOUT=5.5V, VIN=GND 0.2 µA
NOTE:
4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
5) Measured from 10% to 90% output signal.
6) Measured from 90% to 10% output signal.
7) Measured from (50%) EN signal to (90%) output signal.
8) Measured from (50%) EN signal to (10%) output signal.
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 4
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PIN FUNCTIONS
Pin #
SOIC8 Name Description
1 GND Ground.
2, 3 IN Input Voltage. Accepts 2.7V to 5.5V input.
4 EN
———
Active Low: (MP62260-1), Active High: (MP62261-1).
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
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
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TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
1
1.5
2
2.5
3
3.5
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
TURN ON DELAY (ms)
Turn on Delay vs.
Input Votage
I
O
=2A, C
L
=100uF
Turn off Delay vs.
Input Votage
I
O
=2A, C
L
=100uF
0
0.2
0.4
0.6
0.8
1
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
TURN OFF DELAY (ms)
Rise Time vs.
Input Votage
I
O
=2A, C
L
=1uF
0.8
0.9
1
1.1
1.2
1.3
1.4
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
RISE TIME(ms)
Fall Time vs.
Input Votage
I
O
=2A, C
L
=1uF
50
70
90
110
130
150
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
FALL TIME (us)
Supply Current, Output
Enabled vs. Input Voltage
60
70
80
90
100
110
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
SUPPLY CURRENT (uA)
Static Drain-Source On-State
Resistance Variation vs.
Ambient Temperature
I
O
=0.1A
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
-40 -20 0 20 40 60 80
STATIC DRAIN-SOURCE ON-STATE
RESISTANCE VARIATION (%)
Static Drain-Source
On-State Resistance
vs. Input Voltage
I
O
=2A
40
50
60
70
80
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
Input to Output Voltage
vs. Load Current
0
20
40
60
80
100
120
140
160
0 0.4 0.8 1.2 1.6 2
OUTPUT CURRENT (A)
INPUT TO OUTPUT VOLTAGE (mV)
V
IN
=2.7V
V
IN
=5.5V
V
IN
=3.3V
V
IN
=4V
V
IN
=5V
Current Limit vs.
Input Voltage
2.5
2.7
2.9
3.1
3.3
3.5
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
CURRENT LIMIT (A)
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 6
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TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
3
3.2
3.4
3.6
3.8
4
2.5 3 3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
THRESHOLD TRIP CURRENT (A)
Threshold Trip Current vs.
Input Voltage
0
5
10
15
20
25
30
35
40
45
50
55
60
4 6 8 101214161820
PEAK CURRENT (A)
CURRENT LIMIT RESPONSE TIME (us)
Current Limit Response
time vs. Peak Current
V
OUT
2V/div
EN
2V/div
V
OUT
2V/div
EN
2V/div
I
OUT
1A/div
EN
2V/div
V
OUT
2V/div
I
OUT
2A/div
V
OUT
2V/div
EN
2V/div
V
OUT
2V/div
EN
2V/div
400us/div
400us/div
400us/div
200us/div 400us/div
Turn On Delay and Rise
Time with 1uF Load
I
OUT
=2A
Turn Off Delay and Fall
Time with 1uF Load
I
OUT
=2A
Turn On Delay and Rise
Time with 100uF Load
C
L
=100uF, I
OUT
=2A
Turn Off Delay and Fall
Time with 100uF Load
C
L
=100uF, I
OUT
=2A
Short Circuit Current,
Device Enabled into Short
4ms/div
Threshold Trip Current with
Ramped Load on
Enabled Device
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
MP62260-1/MP62261-1 Rev. 0.9 www.MonolithicPower.com 7
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TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
V
OUT
2V/div
EN
2V/div
Flag
5V/div
I
OUT
1A/div
Flag
5V/div
I
OUT
1A/div
I
OUT
1A/div
EN
5V/div
200us/div
2ms/div
Ramped Load on
Enabled Device
400us/div
Inrush Current with
Different Load Capacitance
IOUT=2A
220uF
100uF
470uF
2ms/div
Turn Off Delay and Fall
Time with Output Discharge
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
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FUNCTION BLOCK DIAGRAM
*: EN is active high for MP62261-1
Figure2—Functional Block Diagram
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
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DETAILED DESCRIPTION
Over Current
When the load exceeds trip current (minimum
threshold current triggering constant-current
mode) or a short is present, MP62260-
1/MP62261-1 switches into to a constant-current
mode (current limit value). MP62260-1/MP62261-
1 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.
MP62260-1/MP62261-1 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. The MP62260-
1/MP62261-1 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 an 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,
and would recover once cooling down to approx
120°C.
Under-voltage Lockout (UVLO)
This circuit is used to monitor the input voltage to
ensure that the MP62260-1/MP62261-1 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
EN threshold, the MP62260-1/MP62261-1 is
enabled.
Output Discharge
The part involves a discharge function that
provides a resistive discharge path for the
external output capacitor. The function will be
active when the part is disabled (Input voltage is
under UVLO or enable is deasserted) and it will
be done in a very limited time.
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APPLICATION INFORMATION
Power-Supply Considerations
Over 10µF 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.
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHA RGE
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.
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PACKAGE INFORMATION
SOIC8
0.016(0.41)
0.050(1.27)
0o-8o
DETAIL "A"
0.010(0.25)
0.020(0.50) x 45o
SEE DETAIL "A"
0.0075(0.19)
0.0098(0.25)
0.150(3.80)
0.157(4.00)
PIN 1 ID
0.050(1.27)
BSC
0.013(0.33)
0.020(0.51)
SEATING PLANE
0.004(0.10)
0.010(0.25)
0.189(4.80)
0.197(5.00)
0.053(1.35)
0.069(1.75)
TOP VIEW
FRONT VIEW
0.228(5.80)
0.244(6.20)
SIDE VIEW
14
85
RECOMMENDED LAND PATTERN
0.213(5.40)
0.063(1.60)
0.050(1.27)
0.024(0.61)
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
2) PACKAGE LENGTH DO ES 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 AA.
6) DRAWING IS NOT TO SCALE.
0.010(0.25) BSC
GAUGE PLANE
