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參數(shù)資料
| 型號： | MAX1795 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP |
| 中文描述： | 低電流、升壓型DC-DC轉(zhuǎn)換器，可真正關(guān)斷 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 397K |
| 代理商： | MAX1795 |
General Description
The MAX1795/MAX1796/MAX1797 are high efficiency
step-up DC-DC converters intended for small portable
hand-held devices. These devices feature Maxim’s
True-Shutdown circuitry, which fully disconnects the
output from the input in shutdown, improves efficiency,
and eliminates costly external components. All three
devices also feature Maxim’s proprietary LX-damping
circuitry for reduced EMI in noise-sensitive applica-
tions. For additional in-system flexibility, a battery moni-
toring comparator (LBI/LBO) remains active even when
the DC-DC converter is in shutdown.
The input voltage range is +0.7V to V
OUT
, where V
OUT
can be set from +2V to +5.5V. Startup is guaranteed
from +0.85V. The MAX1795/MAX1796/MAX1797 have a
preset, pin-selectable 5V or 3.3V output. The output
can also be adjusted to other voltages, using two exter-
nal resistors. The three devices differ only in their cur-
rent limits, allowing optimization of external components
for different loads: The MAX1795, MAX1796, and
MAX1797 have current limits of 0.25A, 0.5A, and 1A,
respectively. All devices are packaged in a compact 8-
pin μMAX package that is only 1.09mm tall and half the
size of an 8-pin SO.
________________________Applications
Portable Digital Audio Players
PDAs/Palmtops
Wireless Handsets
Portable Terminals
Features
o
>95% Efficiency
o
True-Shutdown Circuitry
Output Disconnects from Input in Shutdown
No External Schottky Diode Needed
o
25μA Quiescent Supply Current
o
Low-Noise Antiringing Feature
o
LBI/LBO Comparator Enabled in Shutdown
o
2μA Shutdown Current
o
8-Pin μMAX Package
M
Low Supply Current, Step-Up DC-DC Converters
with True-Shutdown
________________________________________________________________
Maxim Integrated Products
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.
1
1
2
3
4
8
7
6
5
BATT
OUT
LX
GND
LBO
FB
LBI
MAX1795
MAX1796
MAX1797
μ
MAX
TOP VIEW
SHDN
Pin Configuration
GND
LBI
LBO
BATT
FB
LX
OUT
MAX1795
MAX1796
MAX1797
SHDN
OUT
IN
0.7V TO
5.5V
ON
OFF
Typical Operating Circuit
19-1798; Rev 0; 12/00
Ordering Information
PART
TEMP. RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
8
μ
MAX
8
μ
MAX
8
μ
MAX
MAX1795
EUA
MAX1796
EUA
MAX1797
EUA
True-Shutdown is a trademark of Maxim Integrated Products.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1796 | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP |
| MAX1797 | Replaced by TMS320C6722B : Digital Signal Processor 144-QFP |
| MAX1795EUA | Low Supply Current, Step-Up DC-DC Converters with True-Shutdown |
| MAX1796EUA | Low Supply Current, Step-Up DC-DC Converters with True-Shutdown |
| MAX1797EUA | Low Supply Current, Step-Up DC-DC Converters with True-Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1795EUA | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Supply Current Step-Up DC/DC Conv 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 |
| MAX1795EUA+ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Supply Current Step-Up DC/DC Conv 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 |
| MAX1795EUA+T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Supply Current Step-Up DC/DC Conv 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 |
| MAX1795EUA-T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Supply Current Step-Up DC/DC Conv 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 |
| MAX1796EUA | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Low-Supply Current Step-Up DC/DC Conv 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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