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LT3430EFE-1 PDF预览

LT3430EFE-1

更新时间: 2024-09-24 05:43:31
品牌 Logo 应用领域
凌特 - Linear 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
28页 318K
描述
High Voltage, 3A,200kHz/100kHz Step-Down Switching Regulators

LT3430EFE-1 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:TSSOP
包装说明:4.40 MM, PLASTIC, TSSOP-16针数:16
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.1
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE最大输入电压:60 V
最小输入电压:5.5 V标称输入电压:15 V
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:125 °C最低工作温度:
最大输出电流:6.5 A封装主体材料:PLASTIC/EPOXY
封装代码:HTSSOP封装等效代码:TSSOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, 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:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:120 kHz温度等级:OTHER
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宽度:4.4 mm
Base Number Matches:1

LT3430EFE-1 数据手册

 浏览型号LT3430EFE-1的Datasheet PDF文件第2页浏览型号LT3430EFE-1的Datasheet PDF文件第3页浏览型号LT3430EFE-1的Datasheet PDF文件第4页浏览型号LT3430EFE-1的Datasheet PDF文件第5页浏览型号LT3430EFE-1的Datasheet PDF文件第6页浏览型号LT3430EFE-1的Datasheet PDF文件第7页 
LT3430/LT3430-1  
High Voltage, 3A,  
200kHz/100kHz Step-Down  
Switching Regulators  
DESCRIPTION  
The LT®3430/LT3430-1 are monolithic buck switching  
regulators that accept input voltages up to 60V. A high ef-  
ficiency 3A, 0.1Ω switch is included on the die along with  
all the necessary oscillator, control and logic circuitry. A  
currentmodearchitectureprovidesfasttransientresponse  
and excellent loop stability.  
FEATURES  
Wide Input Range: 5.5V to 60V  
3A Peak Switch Current over All Duty Cycles  
Constant Switching Frequency:  
200kHz (LT3430)  
100kHz (LT3430-1)  
0.1Ω Switch Resistance  
Current Mode  
Special design techniques and a new high voltage process  
achieve high efficiency over a wide input range. Efficiency  
is maintained over a wide output current range by using  
the output to bias the circuitry and by utilizing a supply  
boost capacitor to saturate the power switch. Patented  
circuitry* maintains peak switch current over the full duty  
cycle range. A shutdown pin reduces supply current to  
30µA and a SYNC pin can be externally synchronized with  
a logic level input from 228kHz to 700kHz for the LT3430  
or from 125kHz to 250kHz for the LT3430-1.  
Effective Supply Current: 2.5mA  
Shutdown Current: 30µA  
1.2V Feedback Reference Voltage  
Easily Synchronizable  
Cycle-by-Cycle Current Limiting  
Small, 16-Pin Thermally Enhanced TSSOP Package  
APPLICATIONS  
Industrial and Automotive Power Supplies  
Portable Computers  
TheLT3430/LT3430-1areavailableinathermallyenhanced  
16-pin TSSOP package.  
Battery Chargers  
Distributed Power Systems  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
*US Patent # 6498466  
TYPICAL APPLICATION  
5V, 2A Buck Converter  
MMSD914TI  
Efficiency vs Load Current  
100  
V
= 5V  
OUT  
V
V
= 12V  
= 42V  
IN  
IN  
90  
80  
70  
60  
50  
0.68µF  
BOOST  
22µH  
V
V
5V  
2A  
IN  
OUT  
5.5V*  
V
IN  
SW  
TO 60V  
30BQ060  
4.7µF  
LT3430**  
100V  
+
100µF 10V  
SOLID  
TANTALUM  
OFF ON  
SHDN  
BIAS  
15.4k  
SYNC  
GND  
FB  
LT3430-1 L = 68µH  
LT3430 L =27µH  
V
C
4.99k  
0
0.5  
1.0  
1.5  
2.0  
2.5  
LOAD CURRENT (A)  
220pF  
3.3k  
0.022µF  
3430 TA02  
3430 TA01  
*FOR INPUT VOLTAGES BELOW 7.5V, SOME RESTRICTIONS MAY APPLY  
** SEE LT3430-1 CIRCUIT IN APPLICATIONS INFORMATION SECTION  
34301fa  
1

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