MP62350EK-LF-Z [MPS]
Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8;
| 型号： | MP62350EK-LF-Z |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8 光电二极管 |
| 文件： | 总12页 (文件大小：350K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62350/MP62351
3.3V/5V, Dual-Channel, 500mA
Current-Limited Power Distribution Switches
With Output Discharge
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
500mA Continuous Current
Accurate Current Limit
Output Discharge Function
2.7V to 5.5V Supply Range
140uA Quiescent Current
85mΩ MOSFET
The MP62350/MP62351 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62350/MP62351
analog switch has 85mΩ 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
MP62350/MP62351 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.
8ms FLAG Deglitch Time
No FLAG Glitch During Power Up
Reverse Current Blocking
Active High & Active Low Options
UL Recognized: Pending
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
The MP62350/MP62351 included a 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
The MP62350/MP62351 is available in 8-pin
MSOP and SOIC packages.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
+5V
2
8
6
To USB Controller
Output 1
FLAG1
OUT1
GND
IN
7
MP62350
Output 2
1
4
5
3
EN1
EN2
OUT2
FLAG2
DUAL-CHANNEL
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ORDERING INFORMATION
Maximum
Continuous
Load Current
Typical Short-
Circuit Current
@ TA=25C
Part Number
Enable
Switch
Package
Temperature
MP62351ES
MP62351EK
MP62350ES
MP62350EK
Active High
Active High
Active Low
Active Low
Dual
Dual
Dual
Dual
0.5A
0.5A
0.5A
0.5A
750mA
750mA
750mA
750mA
SOIC8
MSOP8
SOIC8
–20°C to +85°C
MSOP8
* For Tape & Reel, add suffix –Z (eg. MP62350/MP62351ES–Z). For RoHS Compliant Packaging, add suffix –LF
(eg. MP62350/MP62351ES–LF–Z)
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
EN1*
FLAG1
FLAG2
EN2*
EN1*
FLAG1
FLAG2
EN2*
1
2
3
4
8
7
6
5
OUT1
IN
OUT1
IN
1
2
3
4
8
7
6
5
GND
OUT2
GND
OUT2
MSOP8
SOIC8
*: EN is active high for MP62351
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 Temperature..............–20°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.
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
2
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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
One Channel Enabled, IOUT=0, One
Switch ON
Both Channels Enabled, IOUT=0, Both
Switches ON
Supply Current
Supply Current
90
120
160
μA
μA
140
Shutdown Current
Off Switch Leakage
Current Limit
Device Disable, VOUT=float, VIN=5.5V
Device Disable, VIN=5.5V
1
1
μA
μA
550
1100
1.4
mA
Current Ramp (slew rate≤100A/s) on
Output
Trip Current
1
A
Under-voltage Lockout
Rising Edge
1.95
2.65
V
mV
mΩ
V
Under-voltage Hysteresis
FET On Resistance
250
85
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
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=11ꢀ
VIN=2.7V, CL=1uF, RL=11ꢀ
VIN=5.5V, CL=1uF, RL=11ꢀ
VIN=2.7V, CL=1uF, RL=11ꢀ
VOUT Falling Time, Tf (6)
0.5
0.5
3
Turn On Time, Ton (7)
Turn Off Time, Toff (8)
Discharge Resistance
FLAG Deglitch Time
ENx Input Leakage
Reverse Leakage Current
Notes:
CL=100μF, RL=11ꢀ
CL=100μF, RL=11ꢀ
ms
ms
ꢀ
10
100
8
4
15
ms
μA
μA
1
OUTX=5.5V, IN=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%.
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.
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
3
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
PIN FUNCTIONS
MP62350/MP62351
Pin#
Name
Description
1
Active Low: (MP62350), Active High: (MP62351)
EN1
2
3
4
IN-to-OUT1 Over-current, active-low output flag. Open-Drain.
IN-to-OUT2 Over-current, active-low output flag. Open-Drain.
Active Low: (MP62350), Active High: (MP62351)
FLAG1
FLAG2
EN2
OUT2
GND
IN
5
6
7
8
IN-to-OUT2 Power-Distribution Switch Output.
Ground.
Input Voltage. Accepts 2.7V to 5.5V input.
IN-to-OUT1 Power-Distribution Switch Output
OUT1
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
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
4
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V, VEN=0V, CL=1uF, TA = +25ºC, unless otherwise noted.
1.6
1.5
2.7
2.6
2.5
2.4
3.5
3
1.4
1.3
1.2
1.1
2.5
2
1
1.5
1
2.3
2.2
0.9
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 VOTAGE (V)
INPUT VOTAGE (V)
INPUT VOTAGE (V)
Supply Current, Output
Enabled vs. Input Voltage
Static Drain-Source
On-State Resistance Variation
vs. Ambient Temperature
IOUT=0.1A
110
100
90
30
25
20
15
10
5
55
50
45
0
-5
80
40
35
30
-10
-15
-20
-25
-30
70
60
2.5
3
3.5
4
4.5
5
5.5
6
-30 -15
0
15 30 45 60 75 90
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Static Drain-Source
On-State Resistance
Input to Output Voltage
vs. Load Current
Current Limit vs.
Input Voltage
vs. Input Voltage
IOUT=0.5A
0.9
0.85
0.8
140
130
120
110
100
90
90
80
70
60
50
40
30
20
10
0
Vin=2.7V
Vin=3.3V
Vin=5.5V
Vin=5V
0.75
0.7
Vin=4V
80
0.65
70
2.5
3
3.5
4
4.5
5
5.5
6
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
OUTPUT CURRENT (A)
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=5V, VEN=0V, CL=1uF, TA = +25ºC, unless otherwise noted.
Turn Off Delay and Fall Time
with Output Discharge
IOUT=0A
Threshold Trip Current
vs. Input Voltage
Current Limit Response
vs. Peak Current
1.2
1.1
1
28
24
20
16
12
8
V
OUT
2V/div
EN
0.9
0.8
0.7
5V/div
Flag
5V/div
4
I
OUT
500mV/div
0
2.5
3
3.5
4
4.5
5
5.5
6
0
2
4
6
8
10 12 14
INPUT VOLTAGE (V)
PEAK CURRENT (A)
Turn On Delay and Rise Time
with 1uF Load
IOUT=0.5A
Turn Off Delay and Fall Time
with 1uF Load
IOUT=0.5A
Turn On Delay and Rise Time
with 100uF Load
IOUT=0.5A
V
V
V
OUT
OUT
OUT
2V/div
2V/div
2V/div
EN
EN
EN
5V/div
5V/div
5V/div
Flag
Flag
Flag
5V/div
5V/div
5V/div
I
I
I
OUT
500mV/div
OUT
500mV/div
OUT
500mV/div
Turn Off Delay and Fall Time
with 100uF Load
IOUT=0.5A
Threashold Trip Current
with Ramped Load
on Enabled Device
V
OUT
2V/div
V
OUT
2V/div
EN
5V/div
I
OUT
200mA/div
Flag
5V/div
EN
I
OUT
500mA/div
5V/div
I
OUT
500mV/div
4ms/div
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
6
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=5V, VEN=0V, CL=1uF, TA = +25ºC, unless otherwise noted.
Ramped Load
on Enabled Device
Inrush Current with
Different Load Capacitance
IOUT=0.5A
Flag
5V/div
Flag
5V/div
I
OUT
200mA/div
I
OUT
1A/div
I
OUT
500mA/div
EN
5V/div
2ms/div
1ms/div
2ms/div
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
7
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
FUNCTION BLOCK DIAGRAM
Thermal
Sense
FLAG1
Deglitch
EN1
+
--
AMP
Logic
Charge
Pump
OUT1
OUT2
Current
Sense
UVLO
+
EN
EN
Vref
-
IN
Current
Sense
Charge
Pump
--
+
AMP
Logic
FLAG2
EN2
Deglitch
Thermal
Sense
GND
Figure 2—Functional Block Diagram
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
8
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
DETAILED DESCRIPTION
Thermal Protection
Over 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.
When the load exceeds trip current (minimum
threshold current triggering constant-current
mode) or a short is present, MP62350/MP62351
switches into to a constant-current mode (current
limit value). MP62350/MP62351 will be shutdown
only if the overcurrent condition stays long
enough to trigger thermal protection.
Under-voltage Lockout (UVLO)
Trigger overcurrent protection for different
overload conditions occurring in applications:
This circuit is used to monitor the input voltage to
ensure that the MP62350/MP62351 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.
MP62350/MP62351 detects the short or
overload and immediately switches into a
constant-current mode.
Enable
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.
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
MP62350/MP62351 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 a voltage lockout.
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
9
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
APPLICATION INFORMATION
Power-Supply Considerations
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.
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.
+5V
2
8
6
7
To USB Controller
Output 1
FLAG1
OUT1
GND
IN
MP62350
Output 2
1
4
5
3
EN1
EN2
OUT2
FLAG2
DUAL-CHANNEL
Figure 3—Application Circuit
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
10
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
11
MP62350/MP62351 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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.
MP62350/MP62351 Rev. 0.91
9/18/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
12
相关型号：
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