MP62171EK [MPS]
3.3V/5V, Single-Channel 1.5A Current-Limited Power Distribution Switch;
| 型号： | MP62171EK |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | 3.3V/5V, Single-Channel 1.5A Current-Limited Power Distribution Switch |
| 文件： | 总12页 (文件大小：366K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62170/MP62171
3.3V/5V, Single-Channel 1.5A
Current-Limited Power Distribution Switch
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
1.5A Continuous Current
Accurate Current Limit
2.7V to 5.5V Supply Range
90uA Quiescent Current
75mΩ MOSFET
The MP62170/MP62171 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62170/MP62171
analog switch has 75mΩ on-resistance and
operates from 2.7V to 5.5V input. It is available
with guaranteed current limits, making it ideal
Thermal-Shutdown Protection
Under-Voltage Lockout
for
load
switching
applications.
The
8ms FLAG Deglitch Time
No FLAG Glitch During Power Up
Reverse Current Blocking
Active High & Active Low Options
SOIC8 & MSOP8 Packages
MP62170/MP62171 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.
APPLICATIONS
•
•
•
•
•
•
•
Smartphone and PDA
Portable GPS Device
Notebook PC
MP62170/MP62171 is available in 8-pin MSOP
and SOIC package without exposed pad.
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
5V Input
1
GND
MP62170/
MP62171
6, 7, 8
To VBUS
USB Ports
2, 3
4
OUT
IN
5
EN*
FLAG
* EN is active high for MP62171
SINGLE-CHANNEL
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP62170/MP62171 –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
MP62170ES
MP62170EK
MP62171ES
MP62171EK
SOIC8 62170ES
Active
Low
MSOP8 62170EK
SOIC8 62171ES
MSOP8 62171EK
Single
1.5A
2.3A
-20°C to +85°C
Active
High
* For Tape & Reel, add suffix –Z (g. MP62170ES–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP62171ES–LF–Z)
PACKAGE REFERENCE
TOP VIEW
GND
1
2
3
OUT
OUT
OUT
8
7
6
5
GND
IN
1
2
3
4
8
7
6
5
OUT
OUT
OUT
FLAG
IN
IN
IN
EN*
FLAG
EN*
4
SOIC8
MSOP8
MP62170
Single-Channel
(* EN is active high for MP62171)
Thermal Resistance (3)
SOIC8.....................................90...... 42... °C/W
MSOP8…. .............................150..... 65... °C/W
θJA
θJC
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
MSOP8.......................................................0.8W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature............... -65°C to +150°C
Operating Junct. Temp (TJ)...... -20°C to +125°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.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
2
MP62170/MP62171 –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
EN Enabled, 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
1.6
2.3
3
A
A
Current Ramp (slew rate≤100A/s) on
Output
2.5
3.3
Under-voltage Lockout
Rising Edge
1.95
2.65
V
mV
mΩ
V
Under-voltage Hysteresis
FET On Resistance
250
75
IOUT=100mA (-20°C≤TA≤+85°C)
130
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
°C
Thermal Shutdown
140
Thermal Shutdown Hysteresis
20
0.9
1.7
°C
ms
ms
ms
ms
VOUT Rising Time, Tr (5)
VIN=5.5V, CL=1uF, RL=5.5ꢀ
VIN=2.7V, CL=1uF, RL=5.5ꢀ
VIN=5.5V, CL=1uF, RL=5.5ꢀ
VIN=2.7V, CL=1uF, RL=5.5ꢀ
VOUT Falling Time, Tf (6)
Turn On Time, Ton (7)
0.5
0.5
3
CL=100µF, RL=5.5ꢀ
CL=100µF, RL=5.5ꢀ
ms
ms
ms
µA
µA
(8)
Turn Off Time, Toff
10
15
FLAG Deglitch Time
EN Input Leakage
Reverse Leakage Current
Notes:
4
8
1
VOUT =5.5V, VIN =GND
0.2
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.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
PIN FUNCTIONS
SOIC8
MSOP8
Name Description
1
GND Ground.
2, 3
IN
———
Input Voltage. Accepts 2.7V to 5.5V input.
4
Active High: (MP62171), Active Low: (MP62170).
EN
5
IN-to-OUT Over-current, active-low output flag. Open-Drain.
FLAG
6, 7, 8
OUT IN-to-OUT Power-Distribution Output (for all 3 output pins)
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25ºC, unless otherwise noted.
OUTx
tr
tf
R
C
L
L
Vo (OUTx)
90%
10%
90%
10%
TEST CIRCUIT
50%
50%
ENx
50%
50%
ENx
toff
ton
ton
toff
90%
90%
Vo (OUTx)
Vo (OUTx)
10%
10%
VOLTAGE WAVEFORMS
Figure 1—Test Circuit and Voltage Waveforms
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V, VEN=0V, VCC=5V, CL=2.2µF, TA=25°C, unless otherwise noted.
4
2
1.2
1.1
3.5
1.8
3
2.5
2
1.6
1.4
1.2
1
1
0.9
0.8
1.5
1
0.8
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
Supply Current, Output Enabled
vs.Input Voltage
I =0.1A
O
70
65
60
55
50
45
30
120
110
25
20
15
10
5
100
90
0
-5
-10
-15
-20
-25
80
70
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5
6
-30-20-10 0 1020 30 4050 60 7080 90
o
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
AMBIENT TEMPERATURE ( C)
Current Limit vs.
Input Voltage
Static Drain-Source On-State Input to Output Voltage vs.
Resistance vs.
Input Voltage
Load Current
I =1.5A
O
2.3
140
130
120
110
100
90
200
180
160
140
120
100
80
2.2
2.1
2
60
1.9
1.8
40
80
20
0
70
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5
6
0
0.3
0.6
0.9
1.2
1.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V, VCC=5V, CL=2.2µF, TA=25°C, unless otherwise noted.
Current Limit Response vs.
Peak Current
Threshold Trip Current vs.
Input Voltage
2.8
12
2.7
2.6
2.5
2.4
2.3
10
8
6
4
2 4 6 8 1012 1416182022242628
PEAK CURRENT (A)
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
V
V
V
OUT
OUT
OUT
2V/div.
2V/div.
2V/div.
EN
EN
EN
2V/div.
2V/div.
2V/div.
1ms/div.
100us/div.
1ms/div.
Short Circuit Current,
Device Enabled into Short
Threshold Trip Current
with Ramped Load
on Enabled Device
V
I
V
OUT
OUT
OUT
2V/div.
1A/div.
2V/div.
EN
2V/div.
EN
2V/div.
I
OUT
1A/div.
400us/div.
400us/div.
1ms/div.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V, VCC=5V, CL=2.2µF, TA=25°C, unless otherwise noted.
470uF
220uF
Flag
Flag
2V/div.
5V/div.
100uF
I
OUT
1A/div.
I
I
EN
OUT
OUT
2V/div.
1A/div.
1A/div.
2ms/div.
1ms/div.
2ms/div.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
FUNCTION BLOCK DIAGRAM
UVLO
Vref
--
OUT
IN
Current
Sense
Charge
Pump
AMP
FLAG
EN*
Deglitch
Thermal
Sense
GND
* EN is active high for MP62171
Figure 2—Functional Block Diagram
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
Thermal Protection
DETAILED DESCRIPTION
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.
Over Current
When the load exceeds trip current (minimum
threshold current triggering constant-current
mode) or a short is present, MP62170/MP62171
switches into to a constant-current mode (current
limit value). MP62170/MP62171 will be shutdown
only if the over current condition stays long
enough to trigger thermal protection.
Under-voltage Lockout (UVLO)
This circuit is used to monitor the input voltage to
ensure that the MP62170/MP62171 is operating
correctly. This UVLO circuit also ensures that
there is no operation until the input voltage
reaches the minimum spec.
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.
MP62170/MP62171 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.
Enable
The logic pin disables the chip to reduce the
supply current. The device will operate once the
enable signal reaches the appropriate level. The
input is compatible with both COMS and TTL.
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 MP62170/
MP62171 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 of voltage lockout.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
9
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
APPLICATION INFORMATION
input and improves the immunity of the device to
short-circuit transients.
In order to achieve smaller output load transient,
placing a high-value electrolytic capacitor on the
output pin(s) is recommended when the output
load is heavy.
Power-Supply Considerations
Over 10µF capacitor between IN and GND is
recommended. This precaution reduces power-
supply transients that may cause ringing on the
5V Input
1
GND
MP62170/
MP62171
6, 7, 8
To VBUS
USB Ports
2, 3
4
OUT
IN
5
EN*
FLAG
* EN is active high for MP62171
SINGLE-CHANNEL
Figure 3—Application Circuit
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
10
MP62170/MP62171 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
PACKAGE INFORMATION
MSOP8
0.114(2.90)
0.122(3.10)
5
8
0.187(4.75)
0.199(5.05)
0.114(2.90)
0.122(3.10)
PIN 1 ID
(NOTE 5)
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
SEATING PLANE
0.002(0.05)
0.004(0.10)
0.008(0.20)
0.016(0.40)
0.026(0.65)
0o-6o
0.006(0.15)
FRONT VIEW
SIDE VIEW
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.
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.
7) DRAWING IS NOT TO SCALE.
0.040(1.00)
0.016(0.40)
0.0256(0.65)BSC
RECOMMENDED LAND PATTERN
MP62170/MP62171 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
11
MP62170/MP62171 –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.
MP62170/MP62171 Rev.0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
12
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