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LT3435IFE PDF预览

LT3435IFE

更新时间: 2024-11-09 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
24页 311K
描述
High Voltage 3A, 500kHz Step-Down Switching Regulator with 100® Quiescent Current

LT3435IFE 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:TSSOP包装说明:4.4 MM, PLASTIC, TSSOP-16
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15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:3.3 V标称输入电压:12 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:-40 °C
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:575 kHz温度等级:AUTOMOTIVE
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

LT3435IFE 数据手册

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LT3435  
High Voltage 3A, 500kHz  
Step-Down Switching Regulator  
with 100µA Quiescent Current  
U
FEATURES  
DESCRIPTIO  
The LT®3435 is a 500kHz monolithic buck switching  
regulator that accepts input voltages up to 60V. A high  
efficiency3A,0.1switchisincludedonthediealongwith  
all the necessary oscillator, control and logic circuitry.  
Current mode topology is used for fast transient response  
and good loop stability.  
Wide Input Range: 3.3V to 60V  
3A Peak Switch Current  
Burst Mode® Operation: 100µA Quiescent Current**  
Low Shutdown Current: IQ < 1µA  
Power Good Flag with Programmable Threshold  
Load Dump Protection to 60V  
500kHz Switching Frequency  
Innovative design techniques along with a new high volt-  
age process achieve high efficiency over a wide input  
range. Efficiency is maintained over a wide output current  
rangebyemployingBurstModeoperationatlowcurrents,  
utilizing the output to bias the internal circuitry, and by  
using a supply boost capacitor to fully saturate the power  
switch. Patented circuitry maintains peak switch current  
over the full duty cycle range.* Shutdown reduces input  
supply current to less than 1µA. External synchronization  
canbeimplementedbydrivingtheSYNCpinwithlogic-level  
inputs. A single capacitor from the CSS pin to the output  
providesacontrolledoutputvoltageramp(soft-start).The  
device also has a power good flag with a programmable  
threshold and time-out and thermal shutdown protection.  
Saturating Switch Design: 0.1On-Resistance  
Peak Switch Current Maintained Over  
Full Duty Cycle Range*  
1.25V Feedback Reference Voltage  
Easily Synchronizable  
Soft-Start Capability  
Small 16-Pin Thermally Enhanced TSSOP Package  
U
APPLICATIO S  
High Voltage Power Conversion  
14V and 42V Automotive Systems  
Industrial Power Systems  
Distributed Power Systems  
Battery-Powered Systems  
TheLT3435isavailableina16-pinTSSOPpackagewithan  
exposed pad leadframe for low thermal resistance.  
USB Powered Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation. All other trademarks  
are the property of their respective owners. *Protected by U.S. Patents including 6498466  
**See Burst Mode Operation section for conditions.  
U
TYPICAL APPLICATIO  
Efficiency and Power Loss  
Supply Current vs Input Voltage  
vs Load Current  
14V to 3.3V Step-Down Converter with  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
150  
100µA No Load Quiescent Current  
V
IN  
= 12V  
V
= 3.3V  
= 25°C  
OUT  
A
T
V
3.3V  
2A  
OUT  
125  
100  
75  
50  
25  
0
V
V
BOOST  
IN  
IN  
V
OUT  
= 5V  
1
4.7µF  
100V  
CER  
15µH  
0.33µF  
4148  
SHDN  
SW  
EFFICIENCY  
= 3.3V  
LT3435  
0.1µF  
B360A  
V
C
C
SS  
C
V
OUT  
0.1  
0.01  
0.001  
TYPICAL  
470pF  
4700pF  
10k  
V
BIAS  
FB  
POWER LOSS  
165k  
27pF  
1%  
100µF  
10V  
TANT  
+
T
PGFB  
PG  
1µF  
SYNC  
GND  
100k  
1%  
3435 TA01  
0.0001 0.001  
0.1  
1
10  
0.01  
0
10  
30  
40  
50  
60  
20  
LOAD CURRENT (A)  
INPUT VOLTAGE (V)  
3435 TA02  
3435 TA03  
3435fa  
1

LT3435IFE 替代型号

型号 品牌 替代类型 描述 数据表
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