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LTC1515IS8-3/5 PDF预览

LTC1515IS8-3/5

更新时间: 2024-11-04 22:37:23
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
8页 236K
描述
Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset

LTC1515IS8-3/5 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, SO-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.09Is Samacsys:N
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 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e0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:0.05 A
标称输出电压:5 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: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 (Sn85Pb15)
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 mmBase Number Matches:1

LTC1515IS8-3/5 数据手册

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LTC1515 Series  
Step-Up/Step-Down  
Switched Capacitor DC/DC  
Converters with Reset  
U
DESCRIPTION  
FEATURES  
Adjustable/Selectable 3V, 3.3V or 5V  
The LTC®1515, LTC1515-3/5 and LTC1515-3.3/5 are  
micropower switched capacitor DC/DC converters that  
produce a regulated output voltage by either stepping up  
or stepping down the input voltage. Output voltage is  
adjustable using an external resistor divider (LTC1515) or  
programmable to either 3V/5V (LTC1515-3/5) or 3.3V/5V  
(LTC1515-3.3/5) using a logic pin.  
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  
Very Low Shutdown Current: < 1µA  
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  
VOUT Programmable to 3V/5V or 3.3V/5V  
Short-Circuit and Overtemperature Protected  
650kHz Switching Frequency  
Open-Drain Power-On Reset Output  
Daisy-Chained Control Outputs  
An internal power-on reset circuit forces the POR pin low  
on initial power-up. The POR output remains low until  
200ms (typ) after VOUT is in regulation.  
Available in SO-8 Package  
U
APPLICATIONS  
Thepartsareshort-circuitandovertemperatureprotected.  
Battery life is maximized by very low operating currents  
(ICC = 60µA typ, ICC < 1µA in shutdown). All three parts are  
available in an SO-8 package.  
SIM Interface in GSM Cellular Telephones  
Smart Card Readers  
Local Power Supplies  
Portable Equipment  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
LTC1515-X 5V Output vs Input Voltage  
Programmable 3.3V/5V Power Supply with Power-On Reset  
5.2  
100k  
I
= 10mA  
OUT  
5/3 = 3V  
1
2
3
4
8
7
6
5
V
= 3.3V OR 5V  
= 50mA  
OUT  
OUT  
5.1  
5.0  
4.9  
4.8  
SHDN  
POR  
LTC1515-3.3/5  
5/3  
V
OUT  
ON OFF  
RESET  
I
V
IN  
+
+
+
V
IN  
10µF  
10µF  
4-CELL  
NiCd  
5V 3.3V  
C1  
0.22µF  
GND  
C1  
LTC1515 • TA01  
2
3
4
5
6
7
8
9
10  
INPUT VOLTAGE (V)  
LT1515 • TA02  
1

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