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| 型号： | MAX1795EUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC FIX/ADJ 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，5V，可调 |
| 输入电压： | 1 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 180mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-uMAX |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
19-1798; Rev 0; 12/00
Low Supply Current, Step-Up DC-DC Converters
with True-Shutdown
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-
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
Ordering Information
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-
PART
MAX1795 EUA
MAX1796 EUA
MAX1797 EUA
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
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
Pin Configuration
TOP VIEW
True-Shutdown is a trademark of Maxim Integrated Products.
Typical Operating Circuit
IN
0.7V TO
5.5V
LBI
1
8
BATT
BATT
LX
FB
LBO
SHDN
2
3
4
MAX1795
MAX1796
MAX1797
7
6
5
OUT
LX
GND
LBI
LBO
MAX1795
MAX1796
MAX1797
OUT
FB
OUT
μ MAX
OFF
ON
SHDN
GND
________________________________________________________________ Maxim Integrated Products
1
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1795EUA+ | 功能描述:直流/直流开关转换器 Low-Supply Current Step-Up DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1795EUA+T | 功能描述:直流/直流开关转换器 Low-Supply Current Step-Up DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1795EUA-T | 功能描述:直流/直流开关转换器 Low-Supply Current Step-Up DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1796EUA | 功能描述:直流/直流开关转换器 Low-Supply Current Step-Up DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1796EUA+ | 功能描述:直流/直流开关转换器 Low-Supply Current Step-Up DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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