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Datasheet > LTC1503CMS8-1.8#TR
LTC1503CMS8-1.8#TR PDF预览

LTC1503CMS8-1.8#TR

更新时间： 2024-02-10 05:15:10
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
12页 188K
描述
LTC1503 - High Efficiency Inductorless Step-Down DC/DC Converter; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C

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LTC1503CMS8-1.8#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：MSOP包装说明：TSSOP, TSSOP8,.19
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.26模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：6 V最小输入电压：2.4 V
JESD-30 代码：S-PDSO-G8JESD-609代码：e0
长度：3 mm湿度敏感等级：1
功能数量：1输出次数：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：0.1 A
最大输出电压：1.872 V最小输出电压：1.728 V
标称输出电压：1.8 V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）：235认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Other Analog ICs
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
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：20
微调/可调输出：NO宽度：3 mm
Base Number Matches：1

LTC1503CMS8-1.8#TR 数据手册

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LTC1503-1.8/LTC1503-2  
High Efficiency Inductorless  
Step-Down DC/DC Converters  
U
FEATURES  
DESCRIPTIO  
The LTC®1503-1.8/LTC1503-2 are switched capacitor  
step-down DC/DC converters that produce a regulated  
output from a 2.4V to 6V input. The parts use switched  
capacitor fractional conversion to achieve high efficiency  
over the entire input range. No inductors are required.  
Internal circuitry controls the step-down conversion ratio  
to optimize efficiency as the input voltage and load condi-  
tions vary. Typical efficiency is 25% higher than that of a  
low dropout (LDO) linear regulator.  
■
Input Voltage Range: 2.4V to 6V  
■
Fixed Output Voltages: 1.8V ±4%, 2V ±4%  
■
Output Current: Up to 100mA  
No Inductors  
■
■
Typical Efficiency 25% Higher than LDOs  
■
Low Operating Current: 25µA  
■
■
■
■
■
■
Low Shutdown Current: 5µA  
600kHz Switching Frequency  
Shutdown Disconnects Load from VIN  
Soft-Start Limits Inrush Current at Turn-On  
Short-Circuit and Overtemperature Protected  
Available in 8-Pin MSOP and SO Packages  
Regulation is achieved by sensing the output voltage and  
enabling the internal switching network as needed to  
maintain a fixed output voltage. This method of regulation  
enables the parts to achieve high efficiency at extremely  
lightloads. Lowoperatingcurrent(25µAwithnoload, 5µA  
in shutdown) and low external parts count (two 1µF flying  
capacitors and two 10µF bypass capacitors) make the  
LTC1503-1.8/LTC1503-2 ideally suited for space con-  
strained battery-powered applications. The parts are fully  
short-circuit and overtemperature protected.  
U
APPLICATIO S  
■
Cellular Phones  
■
Handheld Computers  
■
Smart Card Readers  
Low Power DSP Supplies  
Portable Electronic Equipment  
Handheld Medical Instruments  
■
■
The LTC1503-1.8/LTC1503-2 are available in 8-pin MSOP  
and SO packages.  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Efficiency vs Input Voltage  
100  
I
= 100mA  
OUT  
Single Li-Ion to 2V DC/DC Converter  
80  
60  
40  
20  
LTC1503-2  
4
2
3
5
1
8
6
7
V
= 2V  
OUT  
OUT  
I
= 1mA  
V
V
OUT  
IN  
OUT  
–
I
= 100mA  
1-CELL Li-Ion OR  
3-CELL NiMH  
10µF  
10µF  
–
C1  
C1  
C2  
C2  
1µF  
1µF  
+
+
“IDEAL” LDO  
SHDN/SS GND  
1503-1.8/2 TA01  
LTC1503-2  
= 2V  
V
OUT  
4
5
2
6
3
INPUT VOLTAGE (V)  
1503-1.8/2 TA02  
1
1234567...12

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