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LTC3738CUHF PDF预览

LTC3738CUHF

更新时间： 2024-11-11 22:55:55
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
页数 文件大小 规格书
32页 316K
描述
3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning

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中文翻译

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LTC3738CUHF 技术参数

是否Rohs认证：不符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC38,.2X.28,20
针数：38Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16Is 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：7 V
最小输入电压：4.5 V标称输入电压：5 V
JESD-30 代码：R-PQCC-N38JESD-609代码：e0
长度：7 mm湿度敏感等级：1
功能数量：1端子数量：38
最高工作温度：85 °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：HVQCCN封装等效代码：LCC38,.2X.28,20
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）：235认证状态：Not Qualified
座面最大高度：0.8 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：630 kHz技术：CMOS
温度等级：OTHER端子面层：Tin/Lead (Sn/Pb)
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：20
宽度：5 mmBase Number Matches：1

LTC3738CUHF 数据手册

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LTC3738  
3-Phase Buck Controller  
for Intel VRM9/VRM10 with  
Active Voltage Positioning  
U
FEATURES  
DESCRIPTIO  
TheLTC®3738isa3-phasesynchronousstep-downswitch-  
ing regulator controller that drives all N-channel external  
power MOSFET stages in a phase-lockable, fixed fre-  
quency architecture. The 3-phase technique effectively  
triples the fundamental frequency, improving transient  
response while operating each controller 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 Pulse Skip mode technology.  
■
3-Phase Controller with Onboard MOSFET Drivers  
■
Programmable Active Voltage Positioning (AVP)  
with True Current Sensing  
■
Programmable External Thermal Detection or  
Internal Thermal Sensing  
■
Precise Output Current Matching Optimizes  
Thermal Performance and Solution Size  
■
Supports Starting into Precharged VOUTS  
■
Differential Amplifier Accurately Senses VOUT  
PWM, Pulse Skip and Stage SheddingTM Operation  
■
The LTC3738 also allows users to program load slope via  
a resistor for AVP control. Both external and internal  
thermal sensing are available from the on-chip thermal  
detector and comparator.  
■
Synchronizable  
■
210kHz to 530kHz Per Phase, Fixed Frequency  
■
Output Power Good Indicator with Adaptive Blanking  
■
Adjustable Soft-Start Current Ramping  
■
■
■
A differential amplifier provides sensing of both the high  
and low sides of the output voltage.  
Short-Circuit Shutdown Timer with Defeat Option  
OPTI-LOOP® Compensation Minimizes COUT  
38-Lead (5mm × 7mm) QFN Package  
U
Soft-start and a defeatable, timed short-circuit shutdown  
protect the MOSFETs and the load. A foldback current  
circuit also provides protection for the external MOSFETs  
under short-circuit or overload conditions. An all- “1” VID  
detector turns off the regulator after a 1µs timeout.  
APPLICATIO S  
■
High Performance Notebook Computers  
Servers, Desktop Computers and Workstations  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
OPTI-LOOP is a registered trademark of Linear Technology Corporation.  
Stage Shedding is a trademark of Linear Technology Corporation.  
U.S. Patent Numbers: 5481178, 5994885, 5929620, 6177787, 6144194, 6580258, 6462525,  
6593724, 6674274, 6100678 pending on AVP technique.  
U
TYPICAL APPLICATIO  
VRM10 Step-Down Controller  
V
IN  
5V TO 28V  
5V  
V
TG1  
SW1  
BG1  
CC  
+
0.8µH  
0.002Ω  
0.002Ω  
22µF  
×2  
LTC3738  
10µF  
BOOST1  
BOOST2  
BOOST3  
+
–
SENSE1  
SENSE1  
0.1µF  
V
IN  
SW3 SW2 SW1  
POWER GOOD INDICATOR  
MODE SELECTION/SYNC IN  
TG2  
PGOOD  
FCB/SYNC  
0.8µH  
V
OUT  
SW2  
BG2  
0.8375V TO 1.6000V  
PLLFLTR  
TSNS  
VR_HOTB  
OUTEN  
THERMAL INPUT  
VR HOT INDICATOR  
ON/OFF  
PGND  
+
SENSE2  
–
680pF  
SENSE2  
V
IN  
I
TG3  
SW3  
BG3  
TH  
0.8µH  
0.002Ω  
5k  
SS  
0.1µF  
SGND  
EAIN  
AVP  
+
–
SENSE3  
SENSE3  
100pF  
+
470µF  
×4  
+
–
IN  
IN  
VID0-VID5  
6 VID BITS  
3738 TA01  
3738f  
1
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中文翻译

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