參數(shù)資料
型號(hào)： MAX772
廠商： Maxim Integrated Products, Inc.
英文描述： 5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
中文描述： 5V/12V/15V或可調(diào)、高效率、低IQ、升壓型DC-DC控制器
文件頁(yè)數(shù)： 19/20頁(yè)
文件大?。?/td> 204K
代理商： MAX772
S tarting Up under Load
The Typical Operating Characteristics show the Start-
Up Voltage vs. Load Current graph for bootstrapped-
mode operation. This graph depends on the type
of power switch used. The MAX770–MAX773 are
not designed to start up under full load in boot-
strapped mode with low input voltages.
Layout Considerations
Due to high current levels and fast switching wave-
forms, which radiate noise, proper PC board layout is
essential. Protect sensitive analog grounds by using a
star ground configuration. Minimize ground noise by
connecting GND, the input bypass capacitor ground
lead, and the output filter capacitor ground lead to a
single point (star ground configuration). Also, minimize
lead lengths to reduce stray capacitance, trace resis-
tance, and radiated noise. Place input bypass capaci-
tor C2 as close as possible to V+ and GND.
Excessive noise at the V+ input may falsely trigger the
timing circuitry, resulting in short pulses at EXT. If this
occurs it will have a negligible effect on circuit efficien-
cy. If desired, place a 4.7μF directly across the V+ and
GND pins (in parallel with the 0.1μF C2 bypass capaci-
tor) to reduce the noise at V+.
M
5V /12V /15V or Adjustable, High-Efficiency,
Low I
Q
, Step-Up DC-DC Controllers
______________________________________________________________________________________
19
Table 2. Component Suppliers
PRODUCTION
INDUCTORS
CAPACITORS
TRANSISTORS
Surface Mount
Matsuo
267 series
Sprague
595D series
Through Hole
Sumida
CD54 series
CDR125 series
Coiltronics
CTX20 series
Motorola
1N5817–1N5822
MUR115 (high voltage)
Nihon
EC10 series
DIODES
Sumida
RCH855 series
RCH110 series
Renco
RL1284-18
Sanyo
OS-CON series
Nichicon
PL series
United Chemi-Con
LXF series
NPN
Zetex
ZTX694B
Coiltronics
Matsuo
USA: (714) 969-2491
J apan: 81-6-337-6450
(714) 960-6492
81-6-337-6456
Nichicon
USA: (847) 843-7500
(847) 843-2798
Nihon
USA: (805) 867-2555
(805) 867-2698
Renco
Sanyo
USA: (516) 586-5566
(516) 586-5562
USA: (619) 661-6835
J apan: 81-7-2070-6306
(619) 661-1055
81-7-2070-1174
Sumida
USA: (847) 956-0666
J apan: 81-3-3607-5111
81-3-3607-5144
United Chemi-Con
Zetex
USA: (714) 255-9500
(714) 255-9400
N-FET
Siliconix
Si9410DY
Si9420DY (high voltage)
Motorola
MTP3055EL
MTD20N03HDL
USA: (561) 241-7876
(561) 241-9339
SUPPLIER
PHONE
FAX
USA: (516) 543-7100
UK: 44-61-627-4963
(516) 864-7630
44-61-627-5467
相關(guān)PDF資料
PDF描述
MAX773 5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX770 5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX773CPD Quadruple 2-Input Positive-AND Gates 14-CDIP -55 to 125
MAX773CSD Quadruple 2-Input Positive-AND Gates 14-CFP -55 to 125
MAX773EPD Quadruple 2-Input Positive-AND Gates 14-CDIP -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX77271EWL+T 制造商:Maxim Integrated Products 功能描述:MULTIMODE PA STEP-DOWN CONVERTER WITH LINEAR BYPASS MODE FOR - Tape and Reel
MAX772C/D 功能描述:DC/DC 開(kāi)關(guān)控制器 15V or Adjustable High Efficiency Low Iq Step-Up DC-DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX772C/D+ 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX772CPA 功能描述:DC/DC 開(kāi)關(guān)控制器 5/12/15/AdjV Step Up DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX772CSA 功能描述:DC/DC 開(kāi)關(guān)控制器 5/12/15/AdjV Step Up DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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