MP62261DS-1-LF [MPS]
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8;
| 型号： | MP62261DS-1-LF |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8 光电二极管 |
| 文件： | 总11页 (文件大小：293K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP62260-1/MP62261-1
3.3V/5V, Single-Channel 2A
Current-Limited Power Distribution Switch
with Output Discharge
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP62260-1/MP62261-1 Power Distribution
Switch features internal current limiting to
prevent damage to host devices due to faulty
load conditions. The MP62260-1/MP62261-1
operates from 2.7V to 5.5V nominal input
voltage and includes a 45mΩ Power MOSFET
to handle up to 2A continuous load with a 3A
typical current limit. The MP62260-1/MP62261-
1 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
3A Accurate Current Limit
Output Discharge Function
2.7V to 5.5V Supply Range
90uA Quiescent Current
45mΩ 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
SOIC8 Package
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.
APPLICATIONS
•
•
•
•
•
•
•
Smartphone and PDA
Portable GPS Device
Notebook PC
The MP62260-1/MP62261-1 involves output
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 MP62260-1/MP62261-1 is available in
SOIC8 package.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP62260-1/
MP62261-1
*
(*is active high for MP62261-1)
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
ORDERING INFORMATION
Typical Short-
Circuit Current
@ TA=25°C
Maximum
Enable Switch Continuous
Load Current
Top
Free Air
Part Number
Package
Marking Temperature (TA)
MP62260DS-1* Active Low Single
MP62261DS-1 Active High Single
2A
2A
3A
3A
SOIC8 62260DS1
SOIC8 62261DS1
-40°C to +85°C
-40°C to +85°C
* For Tape & Reel, add suffix –Z (eg. MP62260DS-1–Z).
For RoHS Compliant Packaging, add suffix –LF (eg. MP62260DS-1–LF–Z)
PACKAGE REFERENCE
TOP VIEW
GND
IN
1
2
3
4
8
7
6
5
OUT
OUT
OUT
FLAG
IN
EN*
SOIC8
MP62260-1/MP62261-1
Single-Channel
(*is active high for MP62261-1)
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (3)
θJA
θJC
SOIC8.....................................90...... 42... °C/W
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
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature............... -65°C to +150°C
Operating Junct. Temp (TJ)...... -40°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.
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
www.MonolithicPower.com
2
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
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
Current Limit
2.7
Device Enabled, IOUT=0
90
1
120
µA
µA
µA
A
Device Disabled, VOUT=float, VIN=5.5V
Device Disabled, VIN=5.5V
1
2.2
3
3.8
4.3
Current Ramp (slew rate≤100A/s) on
Output
Trip Current
3.3
A
Under-voltage Lockout
Rising Edge
1.95 2.30
2.65
V
mV
mΩ
V
Under-voltage Hysteresis
FET On Resistance
250
IOUT=100mA and -40°C≤TA≤85°C
45
70
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
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
CL=100µF, RL=5ꢀ
0.9
1.7
ms
ms
ms
ms
ms
ms
ꢀ
VOUT Rising Time, Tr (5)
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
EN Input Leakage
CL=100µF, RL=5ꢀ
10
100
4
8
15
ms
µA
µA
-1
Reverse Leakage Current
VOUT=5.5V, VIN=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% 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.
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
PIN FUNCTIONS
Pin #
SOIC8
Name
Description
1
2, 3
4
GND
IN
Ground.
Input Voltage. Accepts 2.7V to 5.5V input.
Active Low: (MP62260-1), Active High: (MP62261-1).
IN-to-OUT Over-current, active-low output flag. Open-Drain.
IN-to-OUT Power-Distribution Output (for all 3 output pins).
———
EN
_________
5
FLAG
6, 7, 8
OUT
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
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
Turn on Delay vs.
Input Votage
Turn off Delay vs.
Input Votage
Rise Time vs.
Input Votage
I =2A, C =1uF
I =2A, C =100uF
I =2A, C =100uF
O
L
O
L
O
L
3.5
3
1
0.8
0.6
0.4
0.2
0
1.4
1.3
1.2
1.1
1
2.5
2
1.5
0.9
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
Fall Time vs.
Input Votage
I =2A, C =1uF
Supply Current, Output
Enabled vs. Input Voltage
I =0.1A
O
O
L
150
130
110
90
110
25
20
15
10
5
100
90
0
-5
80
-10
-15
-20
-25
-30
70
70
60
50
-40 -20
0
20 40 60 80
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)
Static Drain-Source
On-State Resistance
vs. Input Voltage
Input to Output Voltage
vs. Load Current
Current Limit vs.
Input Voltage
I =2A
O
3.5
3.3
3.1
2.9
2.7
2.5
160
140
120
100
80
80
70
60
50
40
V
=2.7V
IN
V
=3.3V
IN
V
=4V
IN
V
=5V
IN
V
=5.5V
IN
60
40
20
0
2.5
3
3.5
4
4.5
5
5.5
6
0
0.4
0.8
1.2
1.6
2
2.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
Current Limit Response
time vs. Peak Current
Threshold Trip Current vs.
Input Voltage
4
3.8
3.6
3.4
3.2
3
60
55
50
45
40
35
30
25
20
15
10
5
0
2.5
3
3.5
4
4.5
5
5.5
6
4
6
8
10 12 14 16 18 20
INPUT VOLTAGE (V)
PEAK CURRENT (A)
Turn On Delay and Rise
Time with 100uF Load
Turn Off Delay and Fall
Time with 1uF Load
Turn On Delay and Rise
Time with 1uF Load
C =100uF, I
=2A
I
=2A
I
=2A
L
OUT
OUT
OUT
V
V
OUT
V
OUT
OUT
2V/div
2V/div
2V/div
EN
2V/div
EN
2V/div
EN
2V/div
400us/div
400us/div
200us/div
Short Circuit Current,
Device Enabled into Short
Threshold Trip Current with
Ramped Load on
Enabled Device
Turn Off Delay and Fall
Time with 100uF Load
C =100uF, I
=2A
L
OUT
V
OUT
2V/div
I
V
OUT
OUT
1A/div
2V/div
I
EN
2V/div
OUT
EN
2V/div
2A/div
400us/div
4ms/div
400us/div
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
VIN=5V, VEN=0V for MP62260-1, VCC=5V, CL=2.2uF, TA=25℃ unless otherwise noted.
Ramped Load on
Enabled Device
Inrush Current with
Different Load Capacitance
IOUT=2A
470uF
Flag
5V/div
Flag
5V/div
220uF
100uF
I
OUT
1A/div
I
I
OUT
1A/div
EN
5V/div
OUT
1A/div
2ms/div
2ms/div
400us/div
Turn Off Delay and Fall
Time with Output Discharge
V
OUT
2V/div
EN
2V/div
200us/div
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
FUNCTION BLOCK DIAGRAM
*: EN is active high for MP62261-1
Figure2—Functional Block Diagram
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
DETAILED DESCRIPTION
Over Current
Flag Response
When the load exceeds trip current (minimum
threshold current triggering constant-current
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 over temperature or voltage lockout.
mode) or
a
short is present, MP62260-
1/MP62261-1 switches into to a constant-current
mode (current limit value). MP62260-1/MP62261-
1 will be shutdown only if the over current
condition stays long enough to trigger thermal
protection.
Thermal Protection
Trigger over current protection for different
overload conditions occurring in applications:
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,
and would recover once cooling down to approx
120°C.
1) The output has been shorted or overloaded
before the device is enabled or input applied.
MP62260-1/MP62261-1 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.
Under-voltage Lockout (UVLO)
This circuit is used to monitor the input voltage to
ensure that the MP62260-1/MP62261-1 is
operating correctly.
This UVLO circuit also ensures that there is no
operation until the input voltage reaches the
minimum spec.
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 MP62260-
1/MP62261-1 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.
Enable
The logic pin disables the switch to reduce
overall supply current. Once the EN pin reaches
EN threshold, the MP62260-1/MP62261-1 is
enabled.
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.
MP62260-1/MP62261-1 Rev. 0.9
www.MonolithicPower.com
9
1/12/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
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.
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
www.MonolithicPower.com
10
MP62260-1/MP62261-1 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH WITH OUTPUT DISCHARGE
PACKAGE INFORMATION
SOIC8
0.189(4.80)
0.197(5.00)
0.050(1.27)
0.024(0.61)
0.063(1.60)
8
5
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.
MP62260-1/MP62261-1 Rev. 0.9
1/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
11
相关型号：
MP62261DS-1-LF-Z
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
MPS
MP62261DS-LF
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
MPS
MP62261DS-LF-Z
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
MPS
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