MP62341DS [MPS]
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, SOIC-8;
| 型号： | MP62341DS |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, SOIC-8 光电二极管 |
| 文件： | 总12页 (文件大小：325K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62340/MP62341
3.3V/5V, Dual-Channel 1A
Current-Limited Power Distribution Switches
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
1A Continuous Current
Accurate Current Limit
The MP62340/MP62341 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62340/MP62341
analog switch has 80mΩ on-resistance and
operates from 2.7V to 5.5V input. It is available
with guaranteed current limits, making it ideal
2.7V to 5.5V Supply Range
140 μA Quiescent Current
80mΩ 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
Available is MSOP8E and SOIC8
UL Approved—E322138
for
load
switching
applications.
The
MP62340/MP62341 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
•
•
•
•
•
•
•
PDAs
Portable GPS
Notebook PC
Set-top-box
Telecom and Network Systems
PC Card Hot Swap
USB Power Distribution
The MP62340/MP62341 is available in 8-pin
MSOP package with exposed pad and SOIC
package without exposed pad.
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Trademarks of Monolithic Power Systems,
Inc.
TYPICAL APPLICATION
+5V
8
7
1
2
To USB Controller
Output 1
FLAG1
OUT1
GND
IN
MP62340/
MP62341
Output 2
3
4
6
5
EN1*
OUT2
EN2*
FLAG2
* EN is active high for MP62341
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
ORDERING INFORMATION
Maximum
Typical Short-
Free Air
Temperature
Range (TA)
Top
Marking
Part Number
Enable Switch
Continuous Circuit Current Package
Load Current
@ TA=25C
MP62340DS
MP62340DH
MP62341DS
MP62341DH
Active
Low
SOIC8
MSOP8E
SOIC8
62340DS
62340DH
62341DS
62341DH
Dual
1A
1.5A
–40°C to +85°C
Active
High
MSOP8E
* For Tape & Reel, add suffix –Z (e.g. MP62340DS -LF–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP62340DS -LF–Z)
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
GND
IN
1
2
3
4
8
7
6
5
FLAG1
GND
1
2
3
4
8
7
6
5
FLAG1
OUT1
OUT2
FLAG2
OUT1
OUT2
FLAG2
IN
EN1*
EN2*
EN1*
EN2*
EXPOSED PAD
ON BACKSIDE
SOIC8
MSOP8E
MP62340/MP62341
Dual-Channel
(* EN is active high for MP62341)
Thermal Resistance (3)
SOIC8.................................... 90...... 42...°C/W
MSOP8E................................ 55...... 12...°C/W
θJA θJC
ABSOLUTE MAXIMUM RATINGS (1)
IN................................................ -0.3V to +6.0V
EN, FLAG, OUT to GND............. -0.3V to +6.0V
(2)
Notes:
Continuous Power Dissipation (TA = +25°C)
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of
themaximum junction temperature TJ (MAX), the junction-
toambient 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.
MSOP8E.................................................... 2.3W
SOIC8..................................................... 1.4W
Junction Temperature..............................150°C
Lead Temperature ...................................260°C
Storage Temperature.............. –65°C to +150°C
Operating Junction Temp (TJ)... –40°C to +125°C
3) Measured on JESD51-7， 4-layer PCB.
MP62340/MP62341 Rev.1.0
12/10/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
www.MonolithicPower.com
2
MP62340/MP62341 –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
1.1
1.5
1.7
2.2
A
A
Current Ramp (slew rate≤100A/s) on
Output
Trip Current
1.6
2.4
Under-voltage Lockout
Rising Edge
1.95
2.65
V
mV
mΩ
V
Under-voltage Hysteresis
FET On Resistance
250
80
IOUT=100mA (-40°C≤TJ≤125°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
20
°C
°C
Thermal Shutdown Hysteresis
VOUT Rising Time, Tr (5)
VIN=5.5V, CL =1μF, RL =5.5ꢀ
VIN=2.7V, CL =1μF, RL =5.5ꢀ
VIN=5.5V, CL =1μF, RL =5.5ꢀ
VIN=2.7V, CL =1μF, RL =5.5ꢀ
0.9
1.7
ms
ms
ms
ms
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.
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
3
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
PIN FUNCTIONS
SOIC8
MSOP8E
Name
Description
GND,
Exposed Pad
(MSOP8E
Ground. MSOP8E includes exposed pad. Connect to GND plane for optimal thermal
operation.
1
2
3
4
5
6
7
8
IN
Input Voltage. Accepts 2.7V to 5.5V input.
Active Low: (MP62340), Active High: (MP62341)
Active Low: (MP62340), Active High: (MP62341)
IN-to-OUT2 Over-current, active-low output flag. Open-Drain.
IN-to-OUT2 Power-Distribution Switch Output.
IN-to-OUT1 Power-Distribution Switch Output
EN1
EN2
FLAG2
OUT2
OUT1
IN-to-OUT1 Over-current, active-low output flag. Open-Drain.
FLAG1
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
4
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V, CL=1uF, TA=25℃, for only one channel, unless otherwise noted.
1.5
1.4
1.3
1.2
1.1
1
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
3.5
3
2.5
2
1.5
1
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 VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Supply Current, Output
Enable vs. Input Voltage
Static Drain-Source On-State
Resistance Variation vs.
Ambient Temperature
I =0.1A
O
110
100
90
65
60
55
50
45
40
35
30
25
20
15
10
5
0
80
-5
-10
-15
-20
-25
70
60
2.5
3
3.5
4
4.5
5
5.5
6
2.5
3
3.5
4
4.5
5
5.5 6
-40 -20
0
20
40 60 80
AMBIENT TEMPERATURE (oC)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Input to Output Voltage vs.
Load Current
Static Drain-Source On-State
Resistance vs. Input Voltage
Current Limit vs.
Input Voltage
I =1A
O
1.8
1.7
1.6
1.5
1.4
140
130
120
110
100
90
140
120
100
80
Vin=2.7V
Vin=3.3V
Vin=4V
60
Vin=5V
40
Vin=5.5V
20
80
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
0.2
0.4
0.6
0.8
1
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=5V, CL=1μF, TA=25℃, for only one channel, unless otherwise noted.
Current Limit Response Time
vs. Peak Current
Threshold Trip Current vs.
Input Voltage
2.3
2.2
2.1
2
20
16
12
8
1.9
1.8
1.7
1.6
4
2.5
3
3.5
4
4.5
5
5.5
6
2
4
6
8 10 12 14 16 18 20
INPUT VOLTAGE (V)
PEAK CURRENT (A)
V
V
OUT
OUT
5V/div
5V/div
V
OUT
2V/div
EN
EN
5V/div
5V/div
EN
5V/div
Flag
Flag
5V/div
5V/div
Flag
I
I
OUT
1A/div
OUT
1A/div
5V/div
I
OUT
1A/div
400us/div
100us/div
400us/div
Short Circuit Current,
Device Enabled into Short
Threshold Trip Current with
Ramped Load
on Enabled Device
V
OUT
2V/div
I
OUT
V
OUT
2V/div
500mA/div
EN
5V/div
EN
5V/div
Flag
I
OUT
1A/div
5V/div
I
OUT
1A/div
400us/div
400us/div
4ms/div
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
6
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=5V, CL=1μF, TA=25℃, for only one channel, unless otherwise noted.
Ramped Load
Inrush Current with
on Enabled Device
Different Load Capacitance
IOUT=1A
220uF
470uF
Flag
5V/div
100uF
Flag
2V/div
I
OUT
500mA/div
EN
5V/div
I
I
OUT
OUT
1A/div
1A/div
2ms/div
1ms/div
2ms/div
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
7
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
FUNCTION BLOCK DIAGRAM
Thermal
Sense
FLAG1
Deglitch
EN1*
+
--
AMP
Logic
Charge
Pump
OUT1
OUT2
Current
Sense
UVLO
+
Vref
-
IN
Current
Sense
Charge
Pump
--
+
AMP
Logic
FLAG2
EN2*
Deglitch
Thermal
Sense
GND
* EN is active high for MP62341
Figure 2—Functional Block Diagram
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
8
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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 temp. is
internally monitored until the thermal limit is
reached. Once this temp. 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, MP62340/MP62341
switches into to a constant-current mode (current
limit value). MP62340/MP62341 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 MP62340/MP62341 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.
MP62340/MP62341 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. MP62340/
MP62341 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.
MP62340/MP62341 Rev.1.0
www.MonolithicPower.com
9
12/10/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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
8
1
2
To USB Controller
Output 1
FLAG1
OUT1
GND
IN
7
MP62340/
MP62341
Output 2
3
4
6
5
EN1*
OUT2
EN2*
FLAG2
* EN is active high for MP62341
Figure 3—Application Circuit
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
10
MP62340/MP62341 –CURRENT-LIMITED POWER DISTRIBUTION SWITCHES
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
MP62340/MP62341 Rev. 1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
MP62340/MP62341 –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.
MP62340/MP62341 Rev.1.0
12/10/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
12
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500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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