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MAX1797 PDF预览

MAX1797

更新时间: 2024-01-26 11:34:45
品牌 Logo 应用领域
美信 - MAXIM 转换器
页数 文件大小 规格书
13页 398K
描述
Low Supply Current, Step-Up DC-DC Converters with True-Shutdown

MAX1797 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:TSSOP, TSSOP8,.19针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:0.86
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:0.7 V标称输入电压:2 V
JESD-30 代码:S-PDSO-G8JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1.5 A封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP8,.19
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BOOST
最大切换频率:500 kHz技术:BICMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3 mmBase Number Matches:1

MAX1797 数据手册

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19-1798; Rev 0; 12/00  
Low Supply Current, Step-Up DC-DC Converters  
with True-Shutdown  
General Description  
Features  
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.  
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  
The input voltage range is +0.7V to V  
, where V  
OUT  
OUT  
o 8-Pin µMAX Package  
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.  
Ordering Information  
PART  
TEMP. RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 µMAX  
MAX1795EUA  
MAX1796EUA  
MAX1797EUA  
8 µMAX  
8 µMAX  
________________________Applications  
True-Shutdown is a trademark of Maxim Integrated Products.  
Portable Digital Audio Players  
PDAs/Palmtops  
Wireless Handsets  
Portable Terminals  
Pin Configuration  
Typical Operating Circuit  
IN  
0.7V TO  
5.5V  
TOP VIEW  
BATT  
LX  
LBI  
FB  
1
2
3
4
8
7
6
5
BATT  
OUT  
LX  
MAX1795  
MAX1796  
MAX1797  
MAX1795  
MAX1796  
MAX1797  
OUT  
FB  
OUT  
LBO  
LBI  
GND  
SHDN  
LBO  
OFF  
µMAX  
SHDN  
ON  
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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