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參數(shù)資料
| 型號： | MAX773 |
| 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 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 204K |
| 代理商： | MAX773 |
_______________General Desc ription
The MAX770–MAX773 step-up switching controllers pro-
vide 90% efficiency over a 10mA to 1A load. A
unique current-limited pulse-frequency-modulation (PFM)
control scheme gives these devices the benefits of
pulse-width-modulation (PWM) converters (high efficiency
at heavy loads), while using less than 110μA of supply
current (vs. 2mA to 10mA for PWM converters).
These ICs use tiny external components. Their high
switching frequencies (up to 300kHz) allow surface-
mount magnetics of 5mm height and 9mm diameter.
The MAX770/MAX771/MAX772 accept input voltages
from 2V to 16.5V. Output voltages are preset at 5V,
(MAX770), 12V (MAX771), and 15V (MAX772); they can
also be adjusted using two resistors.
The MAX773 accepts inputs from 3V to 16.5V. For a wider
input range, it features an internal shunt regulator that
allows unlimited higher input voltages. The MAX773’s out-
put can be set to 5V, 12V, or 15V, or it can be adjusted
with two resistors.
The MAX770–MAX773 drive external N-channel MOSFET
switches, allowing them to power loads up to 15W. If less
power is required, use the MAX756/MAX757 or
MAX761/MAX762 step-up switching regulators with on-
board MOSFETs.
________________________Applic ations
Palmtops/Handy-Terminals
High-Efficiency DC-DC Converters
Battery-Powered Applications
Positive LCD-Bias Generators
Portable Communicators
Flash Memory Programmers
____________________________Features
90% Efficiency for 10mA to 1A Load Currents
o
o
Up to 15W Output Power
o
110μA Max Supply Current
o
5μA Max Shutdown Current
o
2V to 16.5V Input Range
(MAX770/MAX771/MAX772)
Internal Shunt Regulator for High Input Voltages
(MAX773)
Preset or Adjustable Output Voltages
MAX770: 5V or Adjustable
MAX771: 12V or Adjustable
MAX772: 15V or Adjustable
MAX773: 5V, 12V, 15V, or Adjustable
Current-Limited PFM Control Scheme
o
o
o
o
300kHz Switching Frequency
______________Ordering Information
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
M
5V /12V /15V or Adjustable, High-Efficiency,
Low I
Q
, Step-Up DC-DC Controllers
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
1
1
2
3
4
8
7
6
5
CS
GND
AGND
REF
SHDN
FB
V+
EXT
MAX770
MAX771
MAX772
DIP/SO
_________________Pin Configurations
FB AGNDGNDV+
CS
EXT
N
REF
SHDN
ON/OFF
OUTPUT
12V
INPUT
2V TO VOUT
MAX771
__________Typic al Operating Circ uit
PART
TEMP. RANGE
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
PIN-PACKAGE
Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
MAX770
CPA
MAX770CSA
MAX770C/D
MAX770EPA
MAX770ESA
MAX770MJ A
TOP VIEW
Pin Configurations continued at end of data sheet.
19-0202; Rev 2; 11/96
FOLLOWS DATA SHEET
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| MAX773ESD | Quadruple 2-Input Positive-AND Gates 20-LCCC -55 to 125 |
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| MAX773C/D | 功能描述:DC/DC 開關(guān)控制器 5V 12V 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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