參數(shù)資料
型號(hào)： MAX761
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： 12V/ or Adjustable, High-Efficiency, Low I Q , Step-Up DC-DC Converters(12V/可調(diào),高效率,低IQ值,步升DC-DC變換器)
中文描述： 12V/15V或可調(diào)、高效率、低IQ、升壓型DC-DC轉(zhuǎn)換器
文件頁數(shù)： 1/12頁
文件大?。?/td> 146K
代理商： MAX761
_______________General Desc ription
The MAX761/MAX762 step-up switching regulators
provide high efficiency over a wide range of load currents,
delivering up to 150mA. A unique, current-limited
pulse-frequency-modulated (PFM) control scheme gives
the devices the benefits of pulse-width-modulated (PWM)
converters (high efficiency with heavy loads), while using
less than 110μA of supply current (vs. 2mA to 10mA for
PWM converters). The result is high efficiency over a wide
range of loads.
The MAX761/MAX762 input voltage range is 2V to 16.5V.
Output voltages are preset to 12V (MAX761) and 15V
(MAX762), or they can be set with two external resistors.
With a 5V input, the MAX761 guarantees a 12V, 150mA
output. Its high efficiency, low supply current, fast start-up
time, SHDN controlling capability, and small size make the
MAX761 ideal for powering flash memory.
The MAX761/MAX762 have an internal 1A power MOS-
FET, making them ideal for minimum-component, low- and
medium-power applications. These devices use tiny exter-
nal components, and their high switching frequencies (up
to 300kHz) allow for small surface-mount magnetics.
For increased output drive capability or higher output volt-
ages, use the MAX770–MAX773, which are similar in
design to the MAX761/MAX762, but drive external power
MOSFETs. For stepping up to 5V, see the MAX756/
MAX757 and MAX856-MAX859 data sheets.
_________________________Applications
Flash Memory Programming
PCMCIA Cards
Battery-Powered Applications
High-Efficiency DC-DC Converters
____________________________Features
o
High Efficiency for a Wide Range of Load Currents
o
12V/150mA Flash Memory Programming Supply
o
110μA Max Supply Current
o
5μA Max Shutdown Supply Current
o
2V to 16.5V Input Voltage Range
o
12V (MAX761), 15V (MAX762) or Adjustable Output
o
Current-Limited PFM Control Scheme
o
300kHz Switching Frequency
o
Internal, 1A, N-Channel Power FET
o
LBI/LBO Low-Battery Comparator
______________Ordering Information
M
12V /15V or Adjustable, High-Effic ienc y,
Low I
Q
, Step-Up DC-DC Converters
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
1
2
3
4
8
7
6
5
V+
LX
GND
REF
SHDN
FB
LBI
LBO
MAX761
MAX762
DIP/SO
TOP VIEW
__________________Pin Configuration
MAX761
LBI
SHDN
V+
FB
REF
LX
OUTPUT
12V
150mA
LOW-BATTERY
DETECTOR OUTPUT
LOW-BATTERY
DETECTOR INPUT
INPUT
4.75V
TO 12V
ON/OFF
GND
LBO
33μF
33μF
18μH
__________Typic al Operating Circ uit
19-0201; Rev 0; 11/93
Evaluation Kit
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
MAX761
CPA
MAX761CSA
MAX761C/D
MAX761EPA
MAX761ESA
MAX761MJ A
MAX762
CPA
MAX762CSA
MAX762C/D
MAX762EPA
MAX762ESA
MAX762MJ A
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
8 SO
8 CERDIP**
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
* Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883.
Available
相關(guān)PDF資料
PDF描述
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MAX7705 μP Power-Supply Monitor with Reset(具復(fù)位功能的μP電源監(jiān)控器)
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MAX776 -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX761C/D 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX761C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX761CPA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX761CPA+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 12/15/AdjV Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX761CSA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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