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參數(shù)資料
| 型號： | MAX1771 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 12V or Adjustable, High-Efficiency,Step-Up DC-DC Controller(升壓型，輸出電壓12V或可調(diào)，輸出電流1A，DC-DC控制器) |
| 中文描述： | 12V或可調(diào)、高效率、低IQ、升壓型DC-DC控制器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 195K |
| 代理商： | MAX1771 |
_______________General Desc ription
The MAX1771 step-up switching controller provides
90% efficiency over a 30mA to 2A load. A unique cur-
rent-limited pulse-frequency-modulation (PFM) control
scheme gives this device 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).
This controller uses miniature external components. Its
high switching frequency (up to 300kHz) allows sur-
face-mount magnetics of 5mm height and 9mm diame-
ter. It accepts input voltages from 2V to 16.5V. The
output voltage is preset at 12V, or can be adjusted
using two resistors.
The MAX1771 optimizes efficiency at low input voltages
and reduces noise by using a single 100mV current-limit
threshold under all load conditions. A family of similar
devices, the MAX770–MAX773, trades some full-load
efficiency for greater current-limit accuracy; they provide
a 200mV current limit at full load, and switch to 100mV
for light loads.
The MAX1771 drives an external N-channel MOSFET
switch, allowing it to power loads up to 24W. If less power
is required, use the MAX756/MAX757 or MAX761/MAX762
step-up switching regulators with on-board MOSFETs.
An evaluation kit is available. Order the MAX1771EVKIT-SO.
________________________Applic ations
Positive LCD-Bias Generators
Flash Memory Programmers
High-Power RF Power-Amplifier Supply
Palmtops/Hand-Held Terminals
Battery-Powered Applications
Portable Communicators
____________________________Features
90% Efficiency for 30mA to 2A Load Currents
o
o
Up to 24W Output Power
o
110μA Max Supply Current
o
5μA Max Shutdown Current
o
2V to 16.5V Input Range
o
Preset 12V or Adjustable Output Voltage
o
Current-Limited PFM Control Scheme
o
Up to 300kHz Switching Frequency
o
Evaluation Kit Available
______________Ordering Information
M
12V or Adjustable, High-Effic ienc y,
Low I
Q
, S tep-Up DC-DC Controller
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
1
2
3
4
8
7
6
5
CS
GND
AGND
REF
SHDN
FB
V+
EXT
TOP VIEW
MAX1771
DIP/SO
__________________Pin Configuration
FB AGNDGNDV+
CS
EXT
N
REF
SHDN
ON/OFF
OUTPUT
12V
INPUT
2V TO V
OUT
MAX1771
__________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
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
MAX1771CPA
MAX1771CSA
MAX1771C/D
MAX1771EPA
MAX1771ESA
MAX1771MJ A
19-0263; Rev 1; 7/95
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883B.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1771CSA | 12V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controller |
| MAX1771EPA | 12V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controller |
| MAX1771ESA | 12V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controller |
| MAX1771MJA | 12V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controller |
| MAX1772 | Low-Cost, Multichemistry Battery- Charger Building Block |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX17710B-DICE+ | 制造商:Maxim Integrated Products 功能描述:- Gel-pak, waffle pack, wafer, diced wafer on film |
| MAX17710BEVKIT# | 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX17710EVKIT# | 功能描述:電源管理IC開發(fā)工具 MAX17710 EVAL KIT RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX17710EVKIT+ | 功能描述:電源管理IC開發(fā)工具 MAX17710 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX17710G+T | 功能描述:電池管理 uPower Battery Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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