MP62180 [MPS]
3.3V/5V, Single-Channel 2A Current-Limited Power Distribution Switch;
| 型号： | MP62180 |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | 3.3V/5V, Single-Channel 2A Current-Limited Power Distribution Switch |
| 文件： | 总12页 (文件大小：353K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62180/MP62181
3.3V/5V, Single-Channel 2A
Current-Limited Power Distribution Switch
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP62180/MP62181 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62180/MP62181
operates from a 3.3V or 5V nominal input
voltage and includes an 85mΩ Power MOSFET
to handle up to 2A continuous load with a 2.8A
typical current limit. The MP62180/MP62181
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.
•
•
•
•
•
•
•
•
•
•
•
2A Continuous Current
2.8A accurate Current Limit
2.7V to 5.5V Supply Range
90uA Quiescent Current
75mΩ 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
APPLICATIONS
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.
•
•
•
•
•
•
•
Smartphone and PDA
Portable GPS Device
Notebook PC
Set-top-box
Telecom and Network Systems
PC Card Hot Swap
USB Power Distribution
The MP62180/MP62181 is available in QFN8E,
MSOP8E and SOIC8 packages.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
3.5V/5V Input
1
GND
MP62180
6, 7, 8
To VBUS
USB Ports
2, 3
4
OUT
IN
5
FLAG
EN*
SINGLE-CHANNEL
* EN is active high for MP62181
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
ORDERING INFORMATION
Maximum
Typical Short-
Top
Free Air
Part Number Enable Switch Continuous Circuit Current Package
Marking Temperature (TA)
Load Current
@ TA=25C
MP62180DS
MP62180DD
SOIC8
62180DS
Active
Low
QFN8E
(2mm x 3mm)
62180DD
MP62180DH
MP62181DS
MSOP8E
SOIC8
62180DH
Single
2A
2.8A
–40°C to +85°C
62181DS
62181DD
62181DH
Active
High
QFN8E
(2mm x 3mm)
MP62181DD
MP62181DH
MSOP8E
* For Tape & Reel, add suffix –Z (e.g. MP62180DH–Z).
For RoHS Compliant Packaging, add suffix –LF (e.g. MP62180DH–L)
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
TOP VIEW
GND
IN
1
2
3
4
8
7
6
5
OUT
OUT
OUT
FLAG
GND
1
OUT
OUT
OUT
FLAG
8
7
6
5
IN
2
GND
IN
1
2
3
4
8
7
6
5
OUT
OUT
OUT
FLAG
IN
3
IN
EN*
4
IN
EN*
EN*
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
MSOP8E
QFN8E (2mm x 3mm)
MP62180
SOIC8
*: EN is active high for MP62181
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (3)
MSOP8E.................................55...... 12... °C/W
QFN8E (2mm x 3mm) ............55...... 12... °C/W
SOIC8.....................................90...... 42... °C/W
θJA
θJC
IN .................................................-0.3V to +6.0V
EN, FLAG, OUT to GND..............-0.3V to +6.0V
(2)
Continuous Power Dissipation (TA = +25°C)
MSOP8E.................................................... 2.3W
QFN8E (2mm x 3mm)................................ 2.3W
SOIC8........................................................ 1.4W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature...............–65°C to +150°C
Operating Temperature..............–40°C to +85°C
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 θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-
TA)/θJA. 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.
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
2
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
ELECTRICAL CHARACTERISTICS (4)
VIN=5V, TA=+25°C, unless otherwise noted.
Parameter
Condition
Min
Typ
Max
5.5
Units
V
IN Voltage Range
Supply Current
Shutdown Current
Off Switch Leakage
2.7
Device Active, IOUT=0
90
1
120
µA
Device Disable, VOUT=float, VIN=5.5V
Device Disable, VIN=5.5V
µA
1
µA
Current Limit
Trip Current
2.1
2.8
3.5
4
A
A
Current Ramp (slew rate≤100A/s) on
Output
3.1
Under-voltage Lockout
Rising Edge
1.95
2.65
V
Under-voltage Hysteresis
250
75
mV
mΩ
MSOP8E
QFN8E
(2mm x 3mm)
SOIC8
120
120
130
I
OUT=100mA (-40°C≤ TA
FET On Resistance
75
85
mΩ
≤85°C)
mΩ
V
EN Input Logic High Voltage
EN Input Logic Low Voltage
FLAG Output Logic Low Voltage
2
0.8
0.4
V
ISINK=5mA
V
FLAG Output High Leakage
Current
VIN=VFLAG=5.5V
1
µA
Thermal Shutdown
140
°C
Thermal Shutdown Hysteresis
20
0.9
1.7
°C
ms
ms
ms
ms
VOUT Rising Time, Tr (5)
VIN=5.5V, CL=1uF, RL=5ꢀ
VIN=2.7V, CL=1uF, RL=5ꢀ
VIN=5.5V, CL=1uF, RL=5ꢀ
VIN=2.7V, CL=1uF, RL=5ꢀ
VOUT Falling Time, Tf (6)
0.5
0.5
3
Turn On Time, Ton (7)
Turn Off Time, Toff (8)
FLAG Deglitch Time
EN Input Leakage
CL=100µF, RL=5ꢀ
CL=100µF, RL=5ꢀ
ms
ms
ms
µA
µA
10
15
4
8
-1
Reverse Leakage Current
OUT=5.5V, IN=GND
0.2
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 90% to 10%.
7) Measured from (50%) EN signal to (90%) output signal.
8) Measured from (50%) EN signal to (10%) output signal.
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
PIN FUNCTIONS
Pin #
SOIC8
Pin #
MSOP8E
Pin #
QFN8E
Name Description
GND Ground.
1
1
1
2, 3
2, 3
2, 3
IN
———
Input Voltage. Accepts 2.7V to 5.5V input.
4
4
4
Active Low: (MP62180), Active High: (MP62181)
EN
5
5
5
IN-to-OUT Over-current, active-low output flag. Open-Drain.
FLAG
6, 7, 8
6, 7, 8
6, 7, 8
OUT IN-to-OUT Power-Distribution Output (for all 3 output pins)
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25ºC, unless otherwise noted.
OUT
X
tf
tr
CL
RL
VO
(OUT
X
)
90%
10%
90%
10%
TEST CIRCUIT
50%
90%
50%
50%
50%
VI(ENX)
VI(ENX)
toff
t
on
ton
toff
90%
V
O
(OUT
X
)
VO(OUTX)
10%
10%
VOLTAGE WAVEFORMS
Figure 1—Test Circuit and Voltage Waveforms
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS
VIN =5V, VEN=0V for MP62180 or 5V for MP62181, CL=2.2µF, TA = +25ºC, unless otherwise noted.
Supply Current, Output Enabled
vs. Input Voltage
4
3.5
3
100
95
90
85
80
75
70
65
60
0.25
0.2
0.15
0.1
0.05
0
2.5
2
1.5
1
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Static Drain-Source On-State
Resistance Variation vs.
Ambient Temperature
IO=0.1A
Static Drain-Source On-State
Resistance vs. Input Voltage
IO=2A
Input to Output Voltage vs.
Load Current
30
25
20
15
10
5
350
300
250
200
150
100
50
170
160
150
140
130
120
110
100
90
Vin=2.7V
Vin=3.3V
Vin=5.5V
Vin=5V
0
-5
-10
-15
-20
-25
-30
Vin=4.5V
80
70
0
-45 -30 -15 0 15 30 45 60 75 90
2.5
3
3.5
4
4.5
5
5.5
6
0
0.4
0.8
1.2
1.6
2
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
Current Limit Response Time
vs. Peak Current
Threshold Trip Current vs.
Input Voltage
3.2
3.4
3.2
3
30
25
20
15
10
5
3.1
3
2.9
2.8
2.7
2.8
2.6
2.4
2.6
2.5
0
2.5
3
3.5
4
4.5
5
5.5
6
2
5
8
11
14
17
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
PEAK CURRENT (A)
INPUT VOLTAGE (V)
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN =5V, VEN=0V for MP62180 or 5V for MP62181, CL=2.2µF, TA = +25ºC, unless otherwise noted.
VOUT
2V/div
VOUT
2V/div
VOUT
2V/div
EN
5V/div
EN
5V/div
EN
5V/div
4s/div
Short Circuit Current,
Device Enabled into Short
Threshold Trip Current with
Ramped Load
on Enabled Device
VOUT
2V/div
IOUT
VOUT
1A/div
2V/div
EN
5V/div
EN
5V/div
IOUT
1A/div
1ms/div
Ramped Load
on Enabled Device
470uF
220uF
100uF
Flag
5V/div
Flag
5V/div
IOUT
1A/div
IOUT
2A/div
EN
5V/div
IOUT
1A/div
2ms/div
2ms/div
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
FUNCTION BLOCK DIAGRAM
+
--
UVLO
Vref
IN
OUT
Current
Sense
Charge
Pump
--
Logic
AMP
+
FLAG
EN*
Deglitch
Thermal
Sense
GND
*: EN is active high for MP62181; EN is active low for MP62180
Figure2—Function Block Diagram
DETAILED DESCRIPTION
flow for a short period of time before the
current-limit circuit can react.
Over Current
When the load exceeds trip current (minimum
threshold current triggering constant-current
mode) or a short is present, MP62180/MP62181
switches into to a constant-current mode (current
limit value). MP62180/MP62181 will be shutdown
only if the overcurrent condition stays long
enough to trigger thermal protection.
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
MP62180/MP62181 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.
Trigger overcurrent protection for different
overload conditions occurring in applications:
1) The output has been shorted or overloaded
before the device is enabled or input applied.
MP62180/MP62181 detects the short or
overload and immediately switches into a
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 an over temp. or a voltage lockout.
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
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
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 MP62180/MP62181 is operating
correctly.
This UVLO circuit also ensures that 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 enable threshold, the MP62180/MP62181 is
enabled.
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
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.
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
9
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
PACKAGE INFORMATION
MSOP8E (EXPOSED PAD)
0.087(2.20)
0.099(2.50)
0.114(2.90)
0.122(3.10)
5
8
0.187(4.75)
0.114(2.90)
0.122(3.10)
0.062(1.58)
0.074(1.88)
0.199(5.05)
PIN 1 ID
(NOTE 5)
Exposed Pad
4
1
0.010(0.25)
0.014(0.35)
0.0256(0.65)BSC
BOTTOM VIEW
TOP VIEW
GAUGE PLANE
0.010(0.25)
0.030(0.75)
0.037(0.95)
0.043(1.10)MAX
0.004(0.10)
0.008(0.20)
SEATING PLANE
0.002(0.05)
0.006(0.15)
0.016(0.40)
0.026(0.65)
0o-6o
FRONT VIEW
SIDE VIEW
NOTE:
0.100(2.54)
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS
IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
0.075(1.90)
0.181(4.60)
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.
0.040(1.00)
0.016(0.40)
0.0256(0.65)BSC
RECOMMENDED LAND PATTERN
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
10
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
QFN8E (2mm x 3mm)
PIN 1 ID
SEE DETAIL A
2.90
3.10
0.30
0.50
1.65
1.85
PIN 1 ID
MARKING
0.18
0.30
8
5
1
1.90
2.10
1.50
1.70
0.50
BSC
PIN 1 ID
INDEX AREA
4
TOP VIEW
BOTTOM VIEW
PIN 1 ID OPTION B
R0.20 TYP.
PIN 1 ID OPTION A
0.30x45”TYP.
0.80
1.00
0.20 REF
0.00
0.05
SIDE VIEW
DETAIL A
2.90
1.70
NOTE:
0.70
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VCED-2.
5) DRAWING IS NOT TO SCALE.
0.25
0.50
1.60
RECOMMENDED LAND PATTERN
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
11
MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
SOIC8
0.189(4.80)
0.197(5.00)
0.050(1.27)
0.024(0.61)
8
5
0.063(1.60)
0.150(3.80)
0.157(4.00)
0.228(5.80)
0.244(6.20)
0.213(5.40)
PIN 1 ID
1
4
TOP VIEW
RECOMMENDED LAND PATTERN
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.004(0.10)
0.010(0.25)
0.0075(0.19)
0.0098(0.25)
0.013(0.33)
0.020(0.51)
SEE DETAIL "A"
0.050(1.27)
BSC
SIDE VIEW
FRONT VIEW
0.010(0.25)
0.020(0.50)
x 45o
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
GAUGE PLANE
0.010(0.25) BSC
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.
0.016(0.41)
0.050(1.27)
0o-8o
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
DETAIL "A"
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.
MP62180_MP62181 Rev. 0.9
2/23/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
12
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