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LTC3824 PDF预览

LTC3824

更新时间: 2024-01-19 07:27:47
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
12页 234K
描述
High Voltage Step-Down Controller With 40μA Quiescent Current

LTC3824 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:HTSSOP,
针数:10Reach Compliance Code:compliant
风险等级:5.15模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:60 V最小输入电压:4 V
标称输入电压:12 VJESD-30 代码:S-PDSO-G10
JESD-609代码:e3长度:3 mm
功能数量:1端子数量:10
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:1.1 mm表面贴装:YES
切换器配置:SINGLE最大切换频率:460 kHz
技术:CMOS端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.5 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 mmBase Number Matches:1

LTC3824 数据手册

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LTC3824  
High Voltage Step-Down  
Controller With 40µA  
Quiescent Current  
DESCRIPTION  
The LTC®3824 is a step-down DC/DC controller designed  
to drive an external P-channel MOSFET. With a wide input  
range of 4V to 60V and a high voltage gate driver, the  
LTC3824 is suitable for many industrial and automotive  
highpowerapplications.Constantfrequencycurrentmode  
operation provides excellent performance.  
FEATURES  
n
Wide Input Range: 4V to 60V  
n
Current Mode Constant Frequency PWM  
n
Very Low Dropout Operation: 100% Duty Cycle  
n
Programmable Switching Frequency:  
200kHz to 600kHz  
Selectable High Efficient Burst Mode® Operation:  
n
40μA Quiescent Current  
Easy Synchronization  
8V, 2A Gate Drive (V > 10V) for Industrial High  
The LTC3824 can be configured for Burst Mode operation.  
Burst Mode operation enhances low current efficiency  
(only 40μA quiescent current) and extends battery run  
time. The switching frequency can be programmed up to  
600kHz and is easily synchronizable.  
n
n
CC  
Voltage P-channel MOSFET  
Programmable Soft-Start  
Programmable Current Limit  
Available in a Small 10-Pin Thermally Enhanced  
MSE Package  
n
n
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Otherfeaturesincludecurrentlimit,soft-start,micropower  
shutdown, and Burst Mode disable.  
The LTC3824 is available in a 10-lead MSE power package.  
APPLICATIONS  
L, 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 5731964.  
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Industrial and Automotive Power Supplies  
Telecom Power Supplies  
n
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Distributed Power Systems  
TYPICAL APPLICATION  
5V/2A Buck Converter  
Efficiency and Power Loss vs Load Current  
V
IN  
5.5V TO 60V  
100  
2.5  
2.0  
1.5  
1.0  
C
CAP  
C
+
IN  
0.1μF  
33μF  
100V  
V
V
= 12V  
= 40V  
IN  
IN  
CAP  
EFFICIENCY  
90  
V
CC  
R
S
0.025Ω  
80  
SENSE  
GATE  
LTC3824  
70  
R
SET  
22μH  
V
OUT  
392k  
5V  
V
= 40V  
IN  
60  
50  
0.5  
0
C
OUT 2A  
GND  
POWER LOSS  
100μF  
100pF  
51Ω  
V
= 12V  
s2  
IN  
422k  
10  
100  
LOAD CURRENT (mA)  
1000 2000  
SYNC/MODE  
SS  
V
FB  
3824 TA01a  
V
C
80.6k  
0.1μF  
10k  
3.3nF  
3824 TA01  
3824fc  
1

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