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LT1303IS8#TRPBF

更新时间： 2024-11-11 20:10:43
品牌 Logo 应用领域
凌特 - Linear 电池开关光电二极管
页数 文件大小 规格书
12页 249K
描述
LT1303 - Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed 5V; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C

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LT1303IS8#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SOIC包装说明：SOP, SOP8,.25
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.68模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE FREQUENCY MODULATION
最大输入电压：6 V最小输入电压：1.8 V
标称输入电压：2 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 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：1.25 A
最大输出电压：1.26 V最小输出电压：1.22 V
标称输出电压：1.24 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：0.2 mA表面贴装：YES
切换器配置：BOOST最大切换频率：185 kHz
技术：BIPOLAR温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

LT1303IS8#TRPBF 数据手册

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LT1303/LT1303-5  
Micropower High Efficiency  
DC/DC Converters with  
Low-Battery Detector  
Adjustable and Fixed 5V  
U
DESCRIPTION  
FEATURES  
The LT®1303/LT1303-5 are micropower step-up high  
efficiency DC/DC converters using Burst ModeTM opera-  
tion. They are ideal for use in small, low-voltage battery-  
operated systems. The LT1303-5 accepts an input voltage  
between1.8Vand5Vandconvertsittoaregulated5V. The  
LT1303 is an adjustable version that can supply an output  
voltage up to 25V. Quiescent current is only 120µA from  
the battery and the shutdown pin further reduces current  
to 10µA. The low-battery detector provides an open-  
collector output that goes low when the input voltage  
drops below a preset level. The on-chip NPN power switch  
has a low 170mV saturation voltage at a switch current  
of 1A. The LT1303/LT1303-5 are available in 8-lead PDIP  
or SO packages, easing board space requirements.  
■
5V at 200mA from a 2V Input  
■
Supply Voltage As Low As 1.8V  
■
Up to 88% Efficiency  
120µA Quiescent Current  
Low-Battery Detector  
Low VCESAT Switch: 170mV at 1A Typ  
Uses Inexpensive Surface Mount Inductors  
8-Lead PDIP or SO Package  
■
■
■
■
■
U
APPLICATIONS  
■
EL Panel Drivers  
■
2-Cell and 3-Cell to 5V Conversion  
■
Palmtop Computers  
■
Portable Instruments  
For higher output current, please see the LT1305 or  
LT1302.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
Bar-Code Scanners  
■
PDAs  
■
Wireless Systems  
U
TYPICAL APPLICATION  
5V Output Efficiency  
L1  
22µH  
1N5817  
90  
V
= 4V  
IN  
316k  
80  
70  
60  
50  
40  
30  
1%  
V
SW  
IN  
V
= 2V  
IN  
V = 2.5V  
IN  
V
, 5V  
OUT  
LBI  
SENSE  
200mA  
+
V
= 3V  
IN  
412k  
1%  
LT1303-5  
100µF  
2 CELLS  
100k  
LOW BATTERY  
GOES LOW AT  
V
SHUTDOWN  
SHDN  
GND  
LBO  
PGND  
= 2.2V  
+
BAT  
100µF  
L1 = SUMDIA CD54-220  
LT1303 TA02  
0.1  
1
10  
100  
1000  
Figure 1. 2-Cell to 5V DC/DC Converter with Low-Battery Detect  
LOAD CURRENT (mA)  
LT1303 TA01  
1
1234567...12

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