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LTC3538EDCB#TRM PDF预览

LTC3538EDCB#TRM

更新时间: 2024-09-24 20:59:51
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
16页 197K
描述
IC 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8, 2 X 3 MM, PLASTIC, DFN-8, Switching Regulator or Controller

LTC3538EDCB#TRM 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Transferred零件包装代码:DFN
包装说明:HVSON,针数:8
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.17
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:2.4 V标称输入电压:3.6 V
JESD-30 代码:R-PDSO-N8JESD-609代码:e0
长度:3 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:
最大输出电流:0.8 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):235
认证状态:Not Qualified座面最大高度:0.8 mm
表面贴装:YES切换器配置:BUCK-BOOST
最大切换频率:1200 kHz温度等级:COMMERCIAL EXTENDED
端子面层:Tin/Lead (Sn/Pb)端子形式:NO LEAD
端子节距:0.45 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:2 mm
Base Number Matches:1

LTC3538EDCB#TRM 数据手册

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LTC3538  
800mA Synchronous  
Buck-Boost  
DC/DC Converter  
FEATURES  
DESCRIPTION  
The LTC®3538 is a highly efficient, low noise, buck-boost  
DC/DC converter that operates from input voltages above,  
below, and equal to the output voltage. The topology  
incorporated in the IC provides a continuous transfer  
function through all operating modes, making the product  
ideal for single Lithium Ion or multicell Alkaline or NiMH  
applications where the output voltage is within the battery  
voltage range.  
Regulated Output with Input Voltages Above,  
Below, or Equal to the Output  
800mA Continuous Output Current from a Single  
Lithium-Ion/Polymer Cell  
Single Inductor  
1MHz Fixed Frequency Operation  
Output Disconnect in Shutdown  
2.4V to 5.5V Input  
35μA Quiesecent Current in Burst Mode Operation  
The LTC3538 is suited for use in Micro Hard Disk Drive  
(μHDD)applicationswithits800mAcurrentcapability.Burst  
Mode® operation provides high efficiency at light loads.  
<5μA Shutdown Current  
Internal Soft-Start  
Small, Thermally Enhanced 8-Lead (2mm x 3mm)  
DFN package  
The LTC3538 includes two 0.17Ω N-channel and two  
0.2Ω P-channel MOSFET switches. Operating frequency  
is internally set to 1MHz to minimize solution footprint  
while maximizing efficiency.  
APPLICATIONS  
Miniature Hard Disk Drives  
Other features include <5μA shutdown current, internal  
soft-start, short circuit protection and thermal shutdown.  
The LTC3538 is available in a low profile (0.75mm), ther-  
mally enhanced 8-lead (2mm × 3mm) DFN package.  
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology  
Corporation. All other trademarks are the property of their respective owners. Protected by  
U.S. Patents including 5481178, 6304066, 6580258, 6166527, 6404251.  
MP3 Players  
Digital Cameras  
Cellular Handsets  
PDAs, Handheld PC  
GPS Receivers  
TYPICAL APPLICATION  
Li-Ion/Polymer to 3.3V at 800mA  
Efficiency vs VIN  
100  
L1  
3.3μH  
V
LOAD  
= 3.3V  
= 200mA  
OUT  
I
V
OUT  
3.3V  
800mA  
95  
90  
85  
80  
LTC3538  
SW1 SW2  
R1  
10k  
464k  
V
IN  
2.9V TO 4.2V  
V
V
IN  
OUT  
FB  
33pF  
C
IN  
C
OUT  
10μF  
22μF  
PWM  
BURST  
BURST  
GND  
V
C
15k  
330pF  
SD  
R2  
200k  
ON OFF  
2.4  
2.9  
3.4  
3.9  
(V)  
4.4  
4.9  
5.4  
V
IN  
3538 TA01b  
3538 TA01  
3538f  
1

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