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LT3510IFE#TR PDF预览

LT3510IFE#TR

更新时间： 2024-09-24 21:18:31
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
28页 331K
描述
LT3510 - Monolithic Dual Tracking 2A Step-Down Switching Regulator; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LT3510IFE#TR 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：HTSSOP, TSSOP20,.25
针数：20Reach 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：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：25 V最小输入电压：3.1 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e0长度：6.5 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：2 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP20,.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：1.2 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：1800 kHz
技术：BIPOLAR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

LT3510IFE#TR 数据手册

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LT3510  
Monolithic Dual Tracking  
2A Step-Down Switching  
Regulator  
FEATURES  
DESCRIPTION  
n
Wide Input Range: 3.1V to 25V  
The LT®3510 is a dual current mode PWM step-down  
DC/DC converter with two internal 2.5A switches. Inde-  
pendent input voltage, feedback, soft-start and power  
good pins for each channel simplify complex power  
supply tracking/sequencing requirements.  
n
Two Switching Regulators with 2A Output Capability  
n
Independent Supply to Each Regulator  
n
Adjustable/Synchronizable Fixed Frequency  
Operation from 250kHz to 1.5MHz  
n
Antiphase Switching  
Outputs Can be Paralleled  
Both converters are synchronized to either a common  
external clock input or a resistor programmable fixed  
250kHz to 1.5MHz internal oscillator. At all frequencies, a  
180° phase relationship between channels is maintained,  
reducingvoltagerippleandcomponentsize.Programmable  
frequency allows for optimization between efficiency and  
external component size.  
n
n
Independent, Sequential, Ratiometric or Absolute  
Tracking Between Outputs  
n
Independent Soft-Start and Power Good Pins  
n
Enhanced Short-Circuit Protection  
n
Low Dropout: 95% Maximum Duty Cycle  
n
Low Shutdown Current: <10μA  
n
Minimum input-to-output voltage ratios are improved  
by allowing the switch to stay on through multiple clock  
cycles, only switching off when the boost capacitor needs  
recharging, resulting in ~95% maximum duty cycle.  
20-Lead TSSOP Package with Exposed Leadframe  
APPLICATIONS  
n
DSP Power Supplies  
Each output can be independently disabled using its own  
soft-start pin, or by using the SHDN pin the entire part can  
be placed in a low quiescent current shutdown mode.  
n
Disc Drives  
n
DSL/Cable Modems  
n
Wall Transformer Regulation  
n
The LT3510 is available in a 20-lead TSSOP package with  
exposed leadframe for low thermal resistance.  
Distributed Power Regulation  
n
PCI Cards  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
3.3V and 1.8V Dual 2A Step-Down Converter with Output Tracking  
V
IN  
12V  
Efficiency  
4.7μF  
V
V
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
IN1  
IN2  
61.9k  
V
= 3.3V  
= 2.5V  
OUT  
SHDN  
R /SYNC  
T
V
= 5V  
OUT  
BST1  
SW1  
BST2  
SW2  
3.3μH  
4.7μH  
0.47μF  
B360A  
0.47μF  
V
V
= 1.8V  
OUT  
OUT  
PMEG4005  
47μF  
B360A  
PMEG4005  
LT3510  
IND1  
IND2  
V
OUT2  
V
V
1.8V  
2A  
OUT1  
3.3V  
OUT2  
V
OUT1  
2A  
100μF  
10k  
24.9k  
PG1  
FB1  
V
PG2  
FB2  
V
I
= 12V  
= 0A  
IN  
V
C2  
OUT2  
C1  
FREQUENCY = 500kHz  
470pF  
40.2k  
470pF  
40.2k  
SS/TRACK1 SS/TRACK2  
GND  
0
0.5  
LOAD CURRENT (A)  
1.5  
2
1
8.06k  
10pF  
47pF  
8.06k  
0.1μF  
3510 TA01b  
3510 TA01a  
3510fd  
1
1234567...28

中文翻译

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