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LTC1174CS8 PDF预览

LTC1174CS8

更新时间: 2024-02-22 10:37:41
品牌 Logo 应用领域
凌特 - Linear 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
16页 354K
描述
High Efficiency Step-Down and Inverting DC/DC Converter

LTC1174CS8 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:SOP,
针数:8Reach Compliance Code:compliant
风险等级:5.08模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:CONSTANT OFF TIME
最大输入电压:12 V最小输入电压:4 V
标称输入电压:9 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9025 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出电流:1 A
标称输出电压:1.25 V封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.752 mm
最大供电电流 (Isup):0.6 mA表面贴装:YES
切换器配置:BUCK最大切换频率:200 kHz
技术:CMOS温度等级:COMMERCIAL
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:30宽度:3.899 mm
Base Number Matches:1

LTC1174CS8 数据手册

 浏览型号LTC1174CS8的Datasheet PDF文件第2页浏览型号LTC1174CS8的Datasheet PDF文件第3页浏览型号LTC1174CS8的Datasheet PDF文件第4页浏览型号LTC1174CS8的Datasheet PDF文件第5页浏览型号LTC1174CS8的Datasheet PDF文件第6页浏览型号LTC1174CS8的Datasheet PDF文件第7页 
LTC1174  
LTC1174-3.3/LTC1174-5  
High Efficiency  
Step-Down and Inverting  
DC/DC Converter  
U
DESCRIPTIO  
EATURE  
S
F
The LTC®1174 is a simple current mode DC/DC converter  
ideally suited for 9V to 5V, 5V to 3.3V, or 5V to 5V  
operation. With an internal 0.9switch (at a supply  
voltage of 9V), the LTC1174 requires only four external  
components to construct a complete high efficiency  
DC/DC converter.  
High Efficiency: Up to 94%  
Peak Inductor Current Independent of  
Inductor Value  
Short-Circuit Protection  
Optimized for 5V to 5V Applications  
Wide VIN Range: 4V to 18.5V  
Low Dropout Operation  
Under a no load condition the LT1174 draws only 130µA.  
In shutdown, it draws a mere 1µA making this converter  
ideal for current sensitive applications. In dropout, the  
internal P-channel MOSFET switch is turned on continu-  
ously allowing the user to maximize the life of the battery  
source.  
Low-Battery Detector  
Pin Selectable Current Limit  
Internal 0.9Power Switch: VIN = 9V  
Only Four External Components Required  
130µA Standby Current  
Active Low Micropower Shutdown  
The maximum inductor current of the LTC1174 family is  
pin selectable to either 340mA or 600mA, optimizing  
efficiency for a wide range of applications. Operation up to  
200kHz permits the use of small surface mount inductors  
and capacitors.  
O U  
PPLICATI  
S
A
Distributed Power Systems  
Step-Down Converters  
Inverting Converters  
Memory Backup Supply  
Portable Instruments  
Battery-Powered Equipment  
For applications requiring higher output current or ultra-  
high efficiency, see the LTC1148 data sheet.  
and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation.  
U
O
TYPICAL APPLICATI  
High Efficiency Step-Down Converter  
LTC1174-5 Efficiency  
V
IN  
9V  
100  
3 ×  
15µF*  
25V  
+
6
V
95  
IN  
3
2
8
1
5
V
IN  
= 6V  
LB  
LB  
SHUTDOWN  
IN  
90  
85  
80  
75  
70  
V
OUT  
OUT  
SW  
V
= 9V  
IN  
5V  
175mA  
7
I
PGM  
100µH†  
LTC1174-5  
+
100µF**  
10V  
1N5818  
GND  
4
1174 TA01  
L = 100µH  
V
PGM  
= 5V  
= 0V  
OUT  
(3) AVX TPSD156K025  
AVX TPSD107K010  
*
**  
I
COILTRONICS CTX100-4  
1
10  
LOAD CURRENT (mA)  
100 200  
1174 TA02  
1

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