MP62171ES-1 [MPS]
3.3V/5V, Single-Channel 1.5A Current-Limited Power Distribution Switch with Output Discharge;
| 型号： | MP62171ES-1 |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | 3.3V/5V, Single-Channel 1.5A Current-Limited Power Distribution Switch with Output Discharge |
| 文件： | 总12页 (文件大小：382K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62170-1/MP62171-1
3.3V/5V, Single-Channel 1.5A
Current-Limited Power Distribution Switch
with Output Discharge
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
1.5A Continuous Current
Accurate Current Limit
Output Discharge Function
2.7V to 5.5V Supply Range
90uA Quiescent Current
75mΩ MOSFET
The MP62170-1/MP62171-1 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62170-1/MP62171-1
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
for load switching applications. The MP62170-
1/MP62171-1 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.
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 & MSOP8 Packages
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
MP62170-1/MP62171-1 involves discharge
function that provides a resistive discharge path
for the external output capacitor when the part
is disabled.
Set-top-box
Telecom and Network Systems
PC Card Hot Swap
USB Power Distribution
MP62170-1/MP62171-1 is available in 8-pin
MSOP and SOIC package without exposed pad.
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
3.3V / 5V Input
1
GND
MP62170-1/
MP62171-1
6, 7, 8
To VBUS
USB Ports
2, 3
4
OUT
IN
5
EN*
FLAG
* EN is active high for MP62171-1
SINGLE-CHANNEL
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
ORDERING INFORMATION
Maximum
Typical Short-
Free Air
Part Number Enable Switch Continuous Circuit Current Package Top Marking Temperature
Load Current
@ TA=25C
(TA)
MP62170ES-1*
MP62170EK-1
MP62171ES-1
MP62171EK-1
SOIC8
MSOP
SOIC8
MSOP
62170ES-1
62170EK-1
62171ES-1
62171EK-1
Active
Low
Single
1.5A
2.3A
-20°C to +85°C
Active
High
* For Tape & Reel, add suffix –Z (e.g. MP62170ES-1–Z).
For RoHS compliant packaging, add suffix –LF(e.g. MP62170ES-1–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
MSOP8
SOIC8
MP62170-1
Single-Channel
(* EN is active high for MP62171-1)
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (3)
SOIC8.....................................90...... 42... °C/W
MSOP8…. .............................150..... 65... °C/W
θJA
θJC
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.
MP62170-1/MP62171-1 Rev.1.0
10/26/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
www.MonolithicPower.com
2
MP62170-1/MP62171-1 –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
ꢀ
(8)
Turn Off Time, Toff
10
Discharge Resistance
FLAG Deglitch Time
EN Input Leakage
500
8
4
15
ms
µA
µA
1
Reverse Leakage Current
VOUT =5.5V, VIN =GND
0.2
Notes:
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.
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP62170-1/MP62171-1 –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: (MP62171-1), Active Low: (MP62170-1).
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
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN = 5V, VEN = 0V, VCC = 5V, CL = 2.2uF, 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)
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN = 5V, VEN = 0V, VCC = 5V, CL = 2.2uF, 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.
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN = 5V, VEN = 0V, VCC = 5V, CL = 2.2uF, 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.
V
OUT
2V/div.
EN
2V/div.
Flag
5V/div.
I
OUT
1A/div.
2ms/div.
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
FUNCTION BLOCK DIAGRAM
UVLO
OUT
IN
--
Current
Sense
--
--
--
-- -- --
Charge
Pump
--
Vref
Logic
AMP
+
--
--
--
- -
--
FLAG
EN*
Deglitch
Thermal
Sense
--
-- GND
* EN is active high for MP62171-1
Figure 2—Functional Block Diagram
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP62170-1/MP62171-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH
DETAILED DESCRIPTION
Over Current
Thermal Protection
When the load exceeds trip current (minimum
threshold current triggering constant-current
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.
mode) or
a
short is present, MP62170-
1/MP62171-1 switches into to a constant-current
mode (current limit value). MP62170-1/MP62171-
1 will be shutdown only if the over current
condition stays long enough to trigger thermal
protection.
Under-voltage Lockout (UVLO)
Trigger over current protection for different
overload conditions occurring in applications:
This circuit is used to monitor the input voltage to
ensure that the MP62170-1/MP62171-1 is
operating correctly. This UVLO circuit also
ensures that there is no operation until the input
voltage reaches the minimum spec.
1) The output has been shorted or overloaded
before the device is enabled or input applied.
MP62170-1/MP62171-1 detects the short or
overload and immediately switches into a
constant-current mode.
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.
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.
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.
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 MP62170-1/
MP62171-1 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 an over temp. or voltage lockout.
MP62170-1/MP62171-1 Rev.1.0
www.MonolithicPower.com
9
10/26/2010
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© 2010 MPS. All Rights Reserved.
MP62170-1/MP62171-1 –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
3.3V / 5V Input
1
GND
MP62170-1/
MP62171-1
6, 7, 8
To VBUS
USB Ports
2, 3
4
OUT
IN
5
EN*
FLAG
* EN is active high for MP62171-1
SINGLE-CHANNEL
Figure 3—Application Circuit
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
10
MP62170-1/MP62171-1 –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
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
11
MP62170-1/MP62171-1 –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.
MP62170-1/MP62171-1 Rev.1.0
10/26/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
12
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