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LTC1514IS8-3.3 PDF预览

LTC1514IS8-3.3

更新时间: 2024-11-04 22:34:35
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电池比较器开关式控制器光电二极管
页数 文件大小 规格书
8页 239K
描述
Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

LTC1514IS8-3.3 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOIC包装说明:0.150 INCH, PLASTIC, SOP-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.11模拟集成电路 - 其他类型:SWITCHED CAPACITOR REGULATOR
最大输入电压:8 V最小输入电压:2 V
标称输入电压:3 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e0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:85 °C
最低工作温度:-40 °C最大输出电流:0.05 A
标称输出电压:3.3 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):235认证状态:Not Qualified
座面最大高度:1.752 mm子类别:Other Analog ICs
表面贴装:YES切换器配置:DOUBLER INVERTER
最大切换频率:800 kHz技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
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:20
宽度:3.899 mmBase Number Matches:1

LTC1514IS8-3.3 数据手册

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LTC1514-3.3/LTC1514-5  
Step-Up/Step-Down Switched  
Capacitor DC/DC Converters  
with Low-Battery Comparator  
U
FEATURES  
DESCRIPTION  
TheLTC®1514-3.3/LTC1514-5aremicropowerswitched  
capacitor DC/DC converters that produce a regulated  
output voltage by either stepping up or stepping down  
the input voltage. Output voltage is fixed at either 3.3V  
(LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor  
divider.  
3.3V or 5V Output Voltages  
2V to 10V Input Voltage Range  
Up to 50mA Output Current  
Only Three External Capacitors Required  
Soft Start Limits Inrush Current at Turn-On  
Low Operating Current: 60µA  
Low Shutdown Current: 10µA  
A unique architecture allows the parts to accommodate  
a wide input voltage range (2V to 10V) while maintaining  
±4% regulation. Additional circuitry prevents excessive  
inrush current and output voltage ripple when large VIN  
to VOUT differentials are present.  
Shutdown Disconnects Load from VIN  
Short-Circuit and Overtemperature Protected  
650kHz Switching Frequency  
Low-Battery Comparator Active in Shutdown  
Available in SO-8 Package  
An internal uncommitted comparator is kept active in  
shutdown. The comparator has an open-drain output for  
flexible interfacing.  
U
APPLICATIONS  
Battery-Operated Equipment  
The parts are short-circuit and overtemperature pro-  
tected. Battery life is maximized by very low operating  
currents (ICC = 60µA typ, 10µA in shutdown). Both parts  
are available in an SO-8 package.  
Smart Card Readers  
Local Power Supplies  
Handheld Instruments  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Battery Backup Supplies  
U
TYPICAL APPLICATION  
LTC1514-5 Output Voltage  
vs Input Voltage  
5V Step-Up/Step-Down Power Supply with Low-Battery Detect  
5.2  
I
= 10mA  
100k  
OUT  
1.33M  
1%  
LTC1514-5  
SHDN  
5.1  
5.0  
4.9  
4.8  
1
2
3
4
8
7
6
5
V
= 5V  
OUT  
OUT  
V
ON OFF  
LOW BAT  
OUT  
I
= 50mA  
LBO  
LBI  
V
IN  
+
+
V
10µF  
C1  
C1  
IN  
0.22µF  
4-CELL  
NiCd  
+
499k  
1%  
GND  
10µF  
1514 TA01  
2
3
4
5
6
7
8
9
10  
INPUT VOLTAGE (V)  
LT1514 • TA02  
1

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