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參數(shù)資料
| 型號： | MAX1790 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Low-Noise Step-Up DC-DC Converter(低噪聲步升DC-DC轉(zhuǎn)換器) |
| 中文描述： | 低噪聲、升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 405K |
| 代理商： | MAX1790 |
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX1790 boost converter incorporates high-perfor-
mance (at 1.2MHz), current-mode, fixed-frequency, pulse-
width modulation (PWM) circuitry with a built-in 0.21
N-channel MOSFET to provide a highly efficient regulator
with fast response.
High switching frequency (640kHz or 1.2MHz selectable)
allows easy filtering and faster loop performance. An
external compensation pin provides the user flexibility in
determining loop dynamics, allowing the use of small, low
equivalent series resistance (ESR) ceramic output capaci-
tors. The device can produce an output voltage as high as
12V from an input as low as 2.6V.
Soft-start is programmed with an external capacitor, which
sets the input current ramp rate. In shutdown mode, cur-
rent consumption is reduced to 0.1μA. The MAX1790 is
available in a space-saving 8-pin μMAX package. The
ultra-small package and high switching frequency allow
the total solution to be less than 1.1mm high.
Applications
LCD Displays
PCMCIA Cards
Portable Applications
Hand-Held Devices
Features
o
90% Efficiency
o
Adjustable Output from V
IN
to 12V
o
1.6A, 0.21
, 14V Power MOSFET
o
+2.6V to +5.5V Input Range
o
Pin-Selectable 640kHz or 1.2MHz Switching
Frequency
o
0.1μA Shutdown Current
o
Programmable Soft-Start
o
Small 8-Pin μMAX Package
M
Low-Noise Step-Up DC-DC Converter
________________________________________________________________
Maxim Integrated Products
1
IN
LX
GND
1
2
8
7
SS
FREQ
FB
COMP
μ
MAX
TOP VIEW
3
4
6
5
MAX1790
SHDN
LX
IN
V
IN
2.6V TO 5V
GND
FREQ
V
OUT
COMP
SHDN
FB
MAX1790
ON/OFF
SS
Typical Operating Circuit
19-1563; Rev 0a; 1/00
EVALUATION KIT MANUAL
PART
MAX1790EUA
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
8 μMAX
FOLLOWS DATA SHEET
Pin Configuration
Ordering Information
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1790ESA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1790EUA | 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 |
| MAX1790EUA+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Noise Step-Up 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 |
| MAX1790EUA+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Noise Step-Up 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 |
| MAX1790EUA+-T | 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 8PIN UMAX - Tape and Reel |
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