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LTC3617IUDD#PBF PDF预览

LTC3617IUDD#PBF

更新时间: 2024-01-25 08:49:01
品牌 Logo 应用领域
凌特 - Linear 双倍数据速率开关
页数 文件大小 规格书
20页 475K
描述
LTC3617 - ±6A Monolithic Synchronous Step-Down Regulator for DDR Termination; Package: QFN; Pins: 24; Temperature Range: -40°C to 85°C

LTC3617IUDD#PBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:QFN包装说明:HVQCCN, LCC24,.12X.2,20
针数:24Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:3.56模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE最大输入电压:5.5 V
最小输入电压:2.25 V标称输入电压:3.3 V
JESD-30 代码:R-PQCC-N24JESD-609代码:e3
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:24
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:14 A封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装等效代码:LCC24,.12X.2,20
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):NOT SPECIFIED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:BUCK
最大切换频率:2700 kHz技术:CMOS
温度等级:AUTOMOTIVE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:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LTC3617IUDD#PBF 数据手册

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LTC3617  
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ꢃiep-DMwoAReguꢁaiMhA  
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Features  
Description  
TheLTC®3617isahighefficiencymonolithicsynchronous  
buckregulatorutilizingacurrentmode,constantfrequency  
architecture. It operates from an input voltage range of  
2.25V to 5.5V and provides a regulated output voltage  
equal to 0.5 • VDDQIN while sourcing and sinking up to  
6A of load current. An internal amplifier provides a VTTR  
output voltage equal to 0.5 • VDDQIN with an output cur-  
rent capability of 1ꢀmA.  
n
6A Output Current  
n
2.25V to 5.5V Input Voltage Range  
n
±±10V Output Voltage Accuracy  
n
Opti0ized for Low Output Voltages Down to 1.5V  
n
High Efficiency  
n
Integrated Buffer for VTTR = VDDQIN • 0.5  
n
Shutdown Current: <1µA  
n
Adjustable Switching Frequency: Up to 4MHz  
n
Optional Internal Compensation  
The operating frequency is externally programmable up to  
4MHz, allowing the use of small surface mount inductors.  
For switching-noise-sensitive applications, the LTC3617  
can be synchronized to an external clock up to 4MHz.  
n
Internal Soft-Start  
n
Power Good Status Output  
n
Input Overvoltage Protected  
n
Thermally Enhanced 24-Pin 3mm × 5mm  
ForcedcontinuousmodeoperationintheLTC3617reduces  
noise and RF interference. Adjustable external compensa-  
tion allows the transient response to be optimized over a  
wide range of loads and output capacitors.  
QFN Package  
applications  
n
DDR Termination  
The internal synchronous switch increases efficiency and  
eliminatestheneedforanexternalcatchdiode,minimizing  
external component count and board space. The LTC3617  
is offered in a leadless 24-pin 3mm × 5mm thermally  
enhanced QFN package.  
n
Supports DDR, DDR2 and DDR3 Standards  
n
Tracking Supplies  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners. Protected by U.S. Patents, including 6580258, 5481178, 6498466, 6611131.  
Efficiency and Power Loss  
vs Load Current  
typical application  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
V
IN  
2.5V  
22µF  
×4  
SV  
PV  
IN  
IN  
V
REF  
RUN  
VDDQIN  
RT  
VTTR  
1.25V  
10ꢀm  
1
0.1µF  
0.15µH  
VTT  
1.25V  
6m  
LTC3617  
SW  
PGOOD  
ITH  
SGND  
PGND  
47µF  
×2  
0.1  
0.01  
SYNC  
V
FB  
3617 Tm01a  
0.1  
1
10  
LOAD CURRENT (A)  
3617 TA01b  
3617fa  
1

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