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LTC3834IFE-PBF PDF预览

LTC3834IFE-PBF

更新时间: 2024-01-20 07:26:36
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
28页 427K
描述
30μA IQ Synchronous Step-Down Controller

LTC3834IFE-PBF 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:HVQCCN,
针数:20Reach Compliance Code:compliant
风险等级:5.18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-PQCC-N20JESD-609代码:e3
长度: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:HVQCCN封装形状:RECTANGULAR
封装形式:CHIP CARRIER, 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
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:580 kHz温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:30宽度:4 mm
Base 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 dissipa-  
tion 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 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  
3834fb  
1

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