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LTC3834IFE#PBF

更新时间： 2024-01-23 00:25:26
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
30页 817K
描述
LTC3834 - 30µA IQ Synchronous Step-Down Controller; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3834IFE#PBF 技术参数

是否Rohs认证： 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：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.54模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE最大输入电压：36 V
最小输入电压：4 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G20JESD-609代码：e3
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：85 °C最低工作温度：-40 °C
最大输出电流：3 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）：260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：PUSH-PULL
最大切换频率：580 kHz技术：CMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
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：30
宽度：4.4 mmBase Number Matches：1

LTC3834IFE#PBF 数据手册

 浏览型号LTC3834IFE#PBF的Datasheet PDF文件第2页浏览型号LTC3834IFE#PBF的Datasheet PDF文件第3页浏览型号LTC3834IFE#PBF的Datasheet PDF文件第4页浏览型号LTC3834IFE#PBF的Datasheet PDF文件第5页浏览型号LTC3834IFE#PBF的Datasheet PDF文件第6页浏览型号LTC3834IFE#PBF的Datasheet PDF文件第7页 
LTC3834  
30µA I Synchronous  
Q
Step-Down Controller  
FEATURES  
DESCRIPTION  
TheLTC®3834isahighperformancestep-downswitching  
regulator controller that drives an all N-channel synchro-  
nous power MOSFET stage. A constant-frequency current  
mode architecture allows a phase-lockable frequency of  
up to 650kHz.  
n
Wide Output Voltage Range: 0.8V ≤ V  
≤ 10V  
OUT  
n
Low Operating Quiescent Current: 30µA  
OPTI-LOOP® Compensation Minimizes C  
±1% Output Voltage Accuracy  
n
n
n
n
n
n
n
n
n
n
n
n
n
n
OUT  
Wide V Range: 4V to 36V  
IN  
Phase-Lockable Fixed Frequency 140kHz to 650kHz  
Dual N-Channel MOSFET Synchronous Drive  
Very Low Dropout Operation: 99% Duty Cycle  
Adjustable Output Voltage Soft-Start or Tracking  
Output Current Foldback Limiting  
The 30µA no-load quiescent current extends operating  
life in battery powered systems. OPTI-LOOP compensa-  
tion allows the transient response to be optimized over  
a wide range of output capacitance and ESR values. The  
LTC3834 features a precision 0.8V reference and a power  
good output indicator. The 4V to 36V input supply range  
encompasses a wide range of battery chemistries.  
Power Good Output Voltage Monitor  
Clock Output for PolyPhase® Applications  
Output Overvoltage Protection  
The TRACK/SS pin ramps the output voltage during  
start-up. Current foldback limits MOSFET heat dissipation  
during short-circuit conditions. A reduced feature set  
version of the part (LTC3834-1) is available in a smaller,  
lower pin count package.  
Low Shutdown I : 4µA  
Q
Internal LDO Powers Gate Drive from V or V  
IN  
OUT  
Selectable Continuous, Pulse Skipping or  
Burst Mode® Operation at Light Loads  
n
Small 20-Lead TSSOP or 4mm × 5mm QFN Package  
Comparison of LTC3834 and LTC3834-1  
CLKOUT/  
APPLICATIONS  
PART #  
PHASMD EXTV  
PGOOD  
Yes  
PACKAGES  
CC  
LTC3834  
LTC3834-1  
Yes  
No  
Yes  
No  
FE20/4mm × 5mm QFN  
GN16/3mm × 5mm DFN  
n
Automotive Systems  
No  
n
Telecom Systems  
L, LT, LTC, LTM, Burst Mode, PolyPhase and OPTI-LOOP are registered trademarks and  
No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 5408150, 5481178,  
5705919, 5929620, 6304066, 6498466, 6580258, 6611131.  
n
Battery-Operated Digital Devices  
n
Distributed DC Power Systems  
TYPICAL APPLICATION  
High Efficiency Synchronous Step-Down Converter  
V
IN  
4V TO 36V  
CLKOUT  
PLLLPF  
RUN  
V
IN  
10000  
1000  
100  
10  
100  
90  
10µF  
TG  
0.01µF  
0.22µF  
PGOOD  
TRACK/SS  
80  
BOOST  
SW  
70  
3.3µH  
V
OUT  
3.3V  
5A  
0.012Ω  
I
TH  
560pF  
54.2k  
60  
50  
LTC3834  
150pF  
150µF  
40  
30  
20  
10  
SGND  
PLLIN/MODE  
INTV  
EXTV  
CC  
CC  
4.7µF  
68.1k  
1
V
BG  
FB  
–
+
SENSE  
SENSE  
0
0.1  
215k  
0.000001  
0.0001  
OUTPUT CURRENT (A)  
0.01  
1
PGND  
3834 TA01b  
3834 TA01  
3834fc  
1
For more information www.linear.com/LTC3834  
1234567...30

中文翻译

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