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LTC1265CS-5#PBF PDF预览

LTC1265CS-5#PBF

更新时间: 2024-01-18 10:59:41
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 230K
描述
LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperature Range: 0°C to 70°C

LTC1265CS-5#PBF 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:14Reach Compliance Code:compliant
风险等级:5.29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:5.4 V
标称输入电压:10 VJESD-30 代码:R-PDSO-G14
JESD-609代码:e3长度:8.65 mm
湿度敏感等级:1功能数量:1
端子数量:14最高工作温度:70 °C
最低工作温度:最大输出电流:1.2 A
标称输出电压:5 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:1.75 mm
最大供电电流 (Isup):2.4 mA表面贴装:YES
切换器配置:BUCK最大切换频率:700 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:3.9 mm

LTC1265CS-5#PBF 数据手册

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LTC1265/LTC1265-3.3/LTC1265-5  
1.2A, High Efficiency  
Step-Down DC/DC Converter  
U
FEATURES  
DESCRIPTIO  
The LTC®1265 is a monolithic step-down current mode  
DC/DC converter featuring Burst Mode TM operation at low  
output current. The LTC1265 incorporates a 0.3switch  
(VIN =10V) allowing up to 1.2A of output current.  
High Efficiency: Up to 95%  
Current Mode Operation for Excellent Line and Load  
Transient Response  
Internal 0.3  
Power Switch (VIN = 10V)  
Short-Circuit Protection  
Under no load condition, the converter draws only 160µA.  
In shutdown it typically draws a mere 5µA making this  
converter ideal for current sensitive applications. In drop-  
out the internal P-channel MOSFET switch is turned on  
continuouslymaximizingthelifeofthebatterysource.The  
LTC1265incorporatesautomaticpowersavingBurstMode  
operation to reduce gate charge losses when the load  
currents drop below the level required for continuous  
operation.  
Low Dropout Operation: 100% Duty Cycle  
Low-Battery Detector  
Low 160µA Standby Current at Light Loads  
Active-High Micropower Shutdown: IQ < 15µA  
Peak Inductor Current Independent of Inductor Value  
Available in 14-pUin SO Package  
APPLICATIO S  
5V to 3.3V Conversion  
Theinductorcurrentisuser-programmableviaanexternal  
current sense resistor. Operation up to 700kHz permits  
the use of small surface mount inductors and capacitors.  
Distributed Power Systems  
Step-Down Converters  
Inverting Converters  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
Memory Backup Supply  
Portable Instruments  
Battery-Powered Equipment  
Cellular Telephones  
U
TYPICAL APPLICATIO  
V
IN  
5.4V TO  
12V  
LTC1265-5 Efficiency  
†††  
+
C
IN  
100  
68µF  
20V  
0.1µF  
L1*  
R
**  
SENSE  
V
PWR V  
SHDN  
IN  
IN  
33µH  
V
5V  
1A  
0.1Ω  
OUT  
V
= 6V  
= 9V  
IN  
SW  
95  
90  
85  
80  
75  
70  
V
D1†  
IN  
LTC1265-5  
1k  
††  
+
C
OUT  
I
TH  
220µF  
PGND  
V
= 12V  
IN  
10V  
3900pF  
+
C
T
SENSE  
130pF  
1000pF  
L = 33µH  
V = 5V  
OUT  
SENSE  
R
T
= 0.1Ω  
* COILTRONICS CTX33-4  
SENSE  
SGND  
C
= 130pF  
** IRC LRC2010-01-R100-J  
MBRS130LT3  
†† AVX TPSE227K010  
††† AVX TPSE686K020  
0.01  
0.10  
LOAD CURRENT (A)  
1.00  
LTC1265-FO1  
LTC1265 TA01  
Figure 1. High Efficiency Step-Down Converter  
1

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