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LTC3727IG-1#PBF

更新时间： 2024-11-11 14:52:47
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
32页 354K
描述
LTC3727-1 - High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators; Package: SSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3727IG-1#PBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP28,.3
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.4Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：36 V
最小输入电压：4 V标称输入电压：15 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：10.2 mm湿度敏感等级：1
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：
最大输出电流：3 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP28,.3
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：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：580 kHz技术：CMOS
温度等级：COMMERCIAL EXTENDED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：5.3 mmBase Number Matches：1

LTC3727IG-1#PBF 数据手册

 浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第2页浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第3页浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第4页浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第5页浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第6页浏览型号LTC3727IG-1#PBF的Datasheet PDF文件第7页 
LTC3727/LTC3727-1  
High Efficiency, 2-Phase  
Synchronous Step-Down Switching Regulators  
U
FEATURES  
DESCRIPTIO  
The LTC®3727/LTC3727-1 are high performance dual  
step-down switching regulator controllers that drive all  
N-channel synchronous power MOSFET stages. A con-  
stant frequency current mode architecture allows phase-  
lockable frequency of up to 550kHz. Power loss and noise  
due to the ESR of the input capacitors are minimized by  
operating the two controller output stages out of phase.  
■
Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 14V  
Out-of-Phase Controllers Reduce Required Input  
Capacitance and Power Supply Induced Noise  
OPTI-LOOP® Compensation Minimizes COUT  
±1% Output Voltage Accuracy  
■
■
■
■
■
■
■
■
■
■
■
■
■
■
Power Good Output Voltage Monitor  
Phase-Lockable Fixed Frequency 250kHz to 550kHz  
Latched Short-Circuit Shutdown (LTC3727 Only)  
Dual N-Channel MOSFET Synchronous Drive  
Wide VIN Range: 4V to 36V Operation  
Very Low Dropout Operation: 99% Duty Cycle  
Adjustable Soft-Start Current Ramping  
Foldback Output Current Limiting  
Output Overvoltage Protection  
OPTI-LOOP compensation allows the transient response  
tobeoptimizedoverawiderangeofoutputcapacitanceand  
ESRvalues.Thereisa precision0.8Vreferenceandapower  
good output indicator. A wide 4V to 30V (36V maximum)  
input supply range encompasses all battery chemistries.  
A RUN/SS pin for each controller provides soft-start, and  
on the LTC3727GN, optional timed, short-circuit shut-  
down. Current foldback limits MOSFET heat dissipation  
during short-circuit conditions when overcurrent latchoff  
isdisabled.Outputovervoltageprotectioncircuitrylatches  
on the bottom MOSFET until VOUT returns to normal. The  
FCB mode pin can select among Burst Mode, constant  
frequencymodeandcontinuousinductorcurrentmodeor  
regulate a secondary winding.  
Low Shutdown IQ: 20μA  
Selectable Constant Frequency or Burst Mode®  
Operation  
■
■
Small 28-Lead SSOP Package  
LTC3727-1 Also Available in the 5mm × 5mm QFN  
Package  
U
APPLICATIO S  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst  
Mode 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  
5481178, 5929620, 6177787, 6144194, 6100678, 5408150, 6580258, 6304066, 5705919.  
■
Telecom Systems  
■
Automotive Systems  
■
Battery-Operated Digital Devices  
U
TYPICAL APPLICATIO  
V
IN  
18V TO 28V  
+
22μF  
1μF  
CERAMIC  
50V  
4.7μF  
CERAMIC  
V
IN  
PGOOD INTV  
CC  
M1  
M3  
M4  
TG1  
TG2  
0.1μF  
BOOST1  
SW1  
BOOST2  
SW2  
15μH  
8μH  
0.1μF  
LTC3727/  
LTC3727-1  
M2  
BG1  
BG2  
PLLIN  
PGND  
+
+
SENSE1  
SENSE2  
1000pF  
1000pF  
220pF  
0.015Ω  
0.015Ω  
–
–
SENSE2  
V
SENSE1  
V
V
12V  
4A  
OUT1  
5V  
5A  
OUT2  
V
OSENSE1  
OSENSE2  
105k  
1%  
280k  
1%  
I
I
TH1  
TH2  
+
56μF  
220pF  
15k  
RUN/SS1  
SGND  
RUN/SS2  
+
20k  
1%  
47μF  
6V  
SP  
15V  
SP  
20k  
1%  
15k  
0.1μF  
0.1μF  
M1, M2, M3, M4: FDS6680A  
3727 F01  
Figure 1. High Efficiency Dual 12V/5V Step-Down Converter  
3727fc  
1
1234567...32

中文翻译

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LTC3727IG-1#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3727IG-1#TRPBF Linear

完全替代

 LTC3727-1 - High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators; Package:

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