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原装库存现货：TSF5N60MFACHILD仙童：FMS6502.FMS6143.FMS6363.FMS6501.FSUSB30.FST3257MTCXTI:TPS54331.TSC2003.ADS7846.ADS7843.PCM1754.TXB0108PWR.TSC2007TS3A44159PWR.TS5A3157DBQR.TPS61040DBVR.TMS320F2810.TVP5150.TVP5147.TSC2046,TPS65051.TPS65053.TPS63000.TPS54310MX:. MX25L3205DM.MX25LG.MX25L512-12G系列：MP1518.MP2359.MP3202.MP1540.MP2259.MP2303.MP1423.MP1430.MP1542.MP1580.MP1583.MP1584.MP1591.MP2104.MP2105.MP1482.MP1484.MP2307.MP2309.MP2602.MP3302DD.MP3302DJ.MP9141.BS3406.MP1411.MP1541MP1530.MP2374.MP4462.MP2370.MP3204罗姆：BA7603.BA3121.BA4560.BA5826.BA5888.BA5954.BA5968.BA6208.BA6247BA6287.BA6289.BA6417.BA6849.BA7071.BA7602.BA7612.BA7623.BA7652.BD3702.BD3801.BD9543.BH1417.BU1924.BU4053.BU72435。RB496.BD37534.BA5940.ST:
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电子元器件产品索引： &B&&&&F&&&&J&&&&N&&&&R&&&&V&&&&Z&&&&3&&&&7&&MP1584 datasheet, MP1584 pdf, Step-Down Converter -
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MP1584 Datasheet
Step-Down Converter
MP1584 Datasheet Preview
The Future of Analog IC Technology
DESCRIPTION
The MP1584 is a high frequency step-down
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides 3A output with current mode control for
fast loop response and easy compensation.
The wide 4.5V to 28V input range accommodates
a variety of step-down applications, including
those in an automotive input environment. A
100uA operational quiescent current allows use in
battery-powered applications.
High power conversion efficiency over a wide
load range is achieved by scaling down the
switching frequency at light load condition to
reduce the switching and gate driving losses.
The frequency foldback helps prevent inductor
current runaway during startup and thermal
shutdown provides reliable, fault tolerant
operation.
By switching at 1.5MHz, the MP1584 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MP1584 is available in a thermally enhanced
SOIC8E package.
TYPICAL APPLICATION
3A, 1.5MHz, 28V
Step-Down Converter
? Wide 4.5V to 28V Operating Input Range
? Programmable Switching Frequency from
100kHz to 1.5MHz
? High-Efficiency Pulse Skipping Mode for
Light Load
? Ceramic Capacitor Stable
? Internal Soft-Start
? Internally Set Current Limit without a
Current Sensing Resistor
? Available in SOIC8E Package.
APPLICATIONS
? High Voltage Power Conversion
? Automotive Systems
? Industrial Power Systems
? Distributed Power Systems
? Battery Powered Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
Efficiency Curve
(fSW=500kHz)
90 VIN=12V
OUTPUT CURRENT (A)
MP1584 Rev. 1.0
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
(C) 2011 MPS. All Rights Reserved.
MP1584 – 3A, 1.5MHz, 28V STEP-DOWN CONVERTER
ORDERING INFORMATION
Part Number*
Top Marking
Free Air Temperature (TA)
–20?C to +85?C
* For Tape & Reel, add suffix –Z (e.g. MP1584EN–Z);
For RoHS Compliant Packaging, add suffix –LF. (e.g. MP1584EN–LF–Z)
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage (VIN).....................–0.3V to +30V
Switch Voltage (VSW)............ –0.3V to VIN + 0.3V
BST to SW .....................................–0.3V to +6V
All Other Pins .................................–0.3V to +6V
Continuous Power Dissipation (TA =
+25°C)(2)
............................................................. 2.5W
Junction Temperature ...............................150?C
Lead Temperature ....................................260?C
Storage Temperature.............. –65°C to +150?C
Recommended Operating Conditions (3)
Supply Voltage VIN ...........................4.5V to 28V
Output Voltage VOUT.........................0.8V to 25V
Operating Junct. Temp (TJ) .....–20?C to +125?C
Thermal Resistance (4) θJA θJC
SOIC8E .................................. 50 ...... 10... ?C/W
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) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP1584 Rev. 1.0
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
(C) 2011 MPS. All Rights Reserved.
MP1584 – 3A, 1.5MHz, 28V STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2.5V, VCOMP = 1.4V, TA= +25?C, unless otherwise noted.
Symbol Condition
Feedback Voltage
Upper Switch On Resistance
Upper Switch Leakage
Current Limit
COMP to Current Sense
Transconductance
Error Amp Voltage Gain (5)
Error Amp Transconductance
Error Amp Min Source current
Error Amp Min Sink current
VIN UVLO Threshold
VIN UVLO Hysteresis
Soft-Start Time (5)
Oscillator Frequency
Shutdown Supply Current
Quiescent Supply Current
Thermal Shutdown
4.5V & VIN & 28V
VBST – VSW = 5V
VEN = 0V, VSW = 0V, VIN = 28V
ICOMP = ±3uA
VFB = 0.7V
VFB = 0.9V
0V & VFB & 0.8V
RFREQ = 100kOhm
No load, VFB = 0.9V
Thermal Shutdown Hysteresis
Minimum Off Time (5)
Minimum On Time (5)
EN Up Threshold
EN Hysteresis
5) Guaranteed by design.
MP1584 Rev. 1.0
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
(C) 2011 MPS. All Rights Reserved.
Part Number
Manufactur
Description
Step-Down Converter
Total Page
PDF Download
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