參數(shù)資料
型號(hào)： MP8640DL
廠商： MONOLITHIC POWER SYSTEMS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, DSO14
封裝： 3 X 4 MM, MO-229VGED-3, QFN-14
文件頁(yè)數(shù)： 1/10頁(yè)
文件大小： 351K
代理商： MP8640DL
The Future of Analog IC Technology
MP8640
3A, 23V, 600KHz Step-Down Converter
with Synchronizable Gate Driver
MP8640 Rev. 1.0
12/13/2007
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2007 MPS. All Rights Reserved.
DESCRIPTION
The MP8640 is a monolithic step-down switch
mode converter with a built in internal power
MOSFET. It achieves 3A continuous output
current over a wide input supply range with
excellent load and line regulation.
Current mode operation provides fast transient
response and reliable over current protection.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown.
The MP8640 requires a minimum number of
readily available standard external components
and is available in a space saving 3mm x 4mm
14-pin QFN package.
FEATURES
Wide 4.5V to 23V Operating Input Range
3A Continuous Output Current
80m
Internal Power MOSFET Switch
Power Good Indicator
Synchronous Gate Driver Delivers up to
95% Efficiency
Fixed 600KHz Frequency
Synchronizable to >1MHz External Clock
Cycle-by-Cycle Over Current Protection
Thermal Shutdown
Output Adjustable from 0.8V
Stable with Low ESR Output Ceramic
Capacitors
Available in a 3mm x 4mm 14-Pin QFN
Package
APPLICATIONS
Point of Load Regulator in Distributed
Power System
Digital Set Top Boxes
Personal Video Recorders
Broadband Communications
Flat Panel Television and Monitors
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP8640
SW
BG
FB
BST
8, 9, 10
13
1
14
11
GND
IN
VCC
EN/SYNC
V
OUT
3.3V @ 3A
V
IN
PG
4, 5, 6
12
3
2
OFF ON
C1
10uF
25V
C2
47uF
6.3V
CB
10nF
M2
L1
4.7uH
3.3V
E
70
65
60
75
80
85
90
95
100
OUTPUT CURRENT (A)
Efficiency vs.
Output Current
0
1
2
3
4
V
IN
=23V
V
IN
=5V
V
IN
=12V
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MP8640DL-LF-P 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A 23V 600kHz Step Dwn w/Sync Gate Drvr RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MP8640DL-LF-Z 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3A 23V 600kHz Step Dwn w/Sync Gate Drvr RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MP8642DU-LF-P 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3A, 23V 600kHz Step-Down RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MP8642DU-LF-Z 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Dual 3A, 23V 600kHz Step-Down RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
MP8666DN-LF 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 6A, 600kHz Step-Down w/Sync Gate Driver RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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