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LT3970IDDB#TRMPBF PDF预览

LT3970IDDB#TRMPBF

更新时间: 2024-11-23 21:06:19
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
22页 323K
描述
LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and Integrated Diodes; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

LT3970IDDB#TRMPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC10,.08,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:6.86其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.21 V TO 25 V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:40 V
最小输入电压:4.2 V标称输入电压:12 V
JESD-30 代码:R-PDSO-N10JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:0.865 A标称输出电压:5 V
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC10,.08,20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):260
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK最大切换频率:2640 kHz
技术:BIPOLAR温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:NO LEAD
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:30宽度:2 mm
Base Number Matches:1

LT3970IDDB#TRMPBF 数据手册

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LT3970 Series  
40V, 350mA Step-Down  
Regulator with 2.5µA  
Quiescent Current and  
Integrated Diodes  
FeaTures  
DescripTion  
Low Ripple Burst Mode® Operation  
The LT®3970 is an adjustable frequency monolithic buck  
switching regulator that accepts a wide input voltage  
range up to 40V, and consumes only 2.5µA of quiescent  
current. A high efficiency switch is included on the die  
along with the catch diode, boost diode, and the neces-  
saryoscillator, controlandlogiccircuitry. LowrippleBurst  
Mode operation maintains high efficiency at low output  
currents while keeping the output ripple below 5mV in a  
typical application. Current mode topology is used for fast  
transient response and good loop stability. A catch diode  
current limit provides protection against shorted outputs  
and overvoltage conditions. An enable pin with accurate  
threshold is available, producing a low shutdown current  
n
2.5µA I at 12V to 3.3V  
Q
IN  
OUT  
Output Ripple < 5mV  
P-P  
n
n
n
n
n
Wide Input Voltage Range: 4.2V to 40V Operating  
Adjustable Switching Frequency: 200kHz to 2.2MHz  
Integrated Boost and Catch Diodes  
350mA Output Current  
Fixed Output Voltages: 3.3V, 3.42V, 5V  
1.8µA I at 12V  
Q
IN  
n
n
n
n
n
n
n
Accurate 1V Enable Pin Threshold  
Low Shutdown Current: I = 0.7µA  
Q
Internal Sense Limits Catch Diode Current  
Power Good Flag  
Output Voltage: 1.21V to 25V  
of 0.7µA. A power good flag signals when V  
reaches  
OUT  
Internal Compensation  
90% of the programmed output voltage. The LT3970 is  
available in small 10-pin MSOP and 3mm × 2mm DFN  
packages.  
Small 10-Pin MSOP and (3mm × 2mm) DFN Packages  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
applicaTions  
n
Automotive Battery Regulation  
Power for Portable Products  
n
n
Industrial Supplies  
Typical applicaTion  
5V Step-Down Converter  
Efficiency  
90  
1000  
100  
10  
V
= 12V  
V
IN  
IN  
6V TO 40V  
0.22µF  
22µH  
80  
70  
60  
50  
40  
V
BOOST  
LT3970  
IN  
V
OUT  
5V  
OFF ON  
EN  
PG  
SW  
BD  
350mA  
22pF  
1M  
1
RT  
FB  
22µF  
2.2µF  
GND  
316k  
226k  
f = 600kHz  
0.1  
0.01  
3490 TA01a  
0.01  
0.1  
1
10  
100  
LOAD CURRENT (mA)  
3970 TA01b  
3970fc  
1

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