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LTC3730CG PDF预览

LTC3730CG

更新时间: 2024-01-05 07:04:53
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
27页 311K
描述
3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller

LTC3730CG 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:SSOP,
针数:36Reach Compliance Code:compliant
风险等级:5.74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:7 V最小输入电压:4.5 V
标称输入电压:5 VJESD-30 代码:R-PDSO-G36
JESD-609代码:e3长度:12.8 mm
湿度敏感等级:1功能数量:1
端子数量:36最高工作温度:70 °C
最低工作温度:最大输出电流:5 A
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
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表面贴装:YES
切换器配置:PHASE-SHIFT最大切换频率:750 kHz
温度等级:COMMERCIAL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

LTC3730CG 数据手册

 浏览型号LTC3730CG的Datasheet PDF文件第2页浏览型号LTC3730CG的Datasheet PDF文件第3页浏览型号LTC3730CG的Datasheet PDF文件第4页浏览型号LTC3730CG的Datasheet PDF文件第5页浏览型号LTC3730CG的Datasheet PDF文件第6页浏览型号LTC3730CG的Datasheet PDF文件第7页 
LTC3730  
3-Phase, 5-Bit Intel  
Mobile VID, 600kHz,  
Synchronous Buck Controller  
U
DESCRIPTIO  
FEATURES  
The LTC®3730 is a PolyPhase® synchronous step-down  
switching regulator controller that drives all N-channel  
external power MOSFET stages in a phase-lockable fixed  
frequency architecture. The 3-phase controller drives its  
output stages with 120° phase separation at frequencies  
of up to 600kHz per phase to minimize the RMS losses in  
both the input and output filter capacitors. The 3-phase  
technique effectively triples the fundamental frequency,  
improving transient response while operating each con-  
troller at an optimal frequency for efficiency and ease of  
thermal design. Light load efficiency is optimized by  
using a choice of output Stage Shedding or Burst Mode  
technology.  
3-Phase Current Mode Controller with Onboard  
MOSFET Drivers  
±5% Output Current Match Optimizes Thermal  
Performance and Size of Inductors and MOSFETs  
Operational Amplifier Accomodates Mode Switching  
±1% VREF Accuracy Over Temperature  
Reduced Input and Output Capacitance  
Reduced Power Supply Induced Noise  
VOUT Programmable from 0.6V to 1.75V (IMVP III)  
±10% Power Good Output Indicator  
250kHz to 600kHz Per Phase, PLL, Fixed Frequency  
PWM, Stage SheddingTM or Burst Mode® Operation  
OPTI-LOOP® Compensation Minimizes COUT  
Adjustable Soft-Start Current Ramping  
An internal operational amplifier provides mode selectable  
output voltage programming in conjunction with the inter-  
nal VID voltage control DAC.  
4V,VIN,UndervoltageRUN/SSReset/ReattemptCircuit  
Short-Circuit Shutdown Timer with Defeat Option  
Overvoltage Soft Latch  
Small 36-Lead NUarrow (0.209”) SSOP Package  
Soft-startandadefeatable, timedshort-circuitshutdown  
protect the MOSFETs and the load. Current foldback  
provides protection for the external MOSFETs under  
short-circuit or overload conditions.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode, OPTI-LOOP and PolyPhase are registered trademarks of Linear Technology  
Corporation. Stage Shedding is a trademark of Linear Technology Corporation.  
APPLICATIO S  
Tablet Computers  
High Performance Notebook Computers  
High Output Current DC/DC Power Supplies  
U
TYPICAL APPLICATIO  
V
IN  
5V TO 28V  
V
CC  
V
TG1  
SW1  
BG1  
CC  
+
1µH  
1µH  
4.5V TO 7V  
0.003Ω  
0.003Ω  
22µF  
LTC3730  
10µF  
35V  
BOOST1  
BOOST2  
BOOST3  
+
SENSE1  
0.1µF  
SENSE1  
V
V
SW3 SW2 SW1  
IN  
TG2  
PGOOD  
PLLIN  
POWER GOOD INDICATOR  
OPTIONAL SYNC IN  
V
OUT  
SW2  
BG2  
1.2V  
50A  
PLLFLTR  
PGND  
5 VID BITS  
VID0-VID4  
+
SENSE2  
680pF  
SENSE2  
IN  
I
TG3  
SW3  
BG3  
TH  
1µH  
0.003Ω  
5k  
RUN/SS  
0.1µF  
100pF  
SGND  
EAIN  
+
SENSE3  
AMPOUT  
+
C
SENSE3  
IN  
OUT  
+
470µF  
IN  
4V  
3730 F01  
Figure 1. High Current Triple Phase Step-Down Converter  
3730f  
1

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