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LTC3634EFE#TRPBF

更新时间： 2024-11-19 14:52:47
品牌 Logo 应用领域
凌特 - Linear 双倍数据速率开关光电二极管
页数 文件大小 规格书
28页 496K
描述
LTC3634 - 15V Dual 3A Monolithic Step-Down Regulator for DDR Power; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC3634EFE#TRPBF 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：TSSOP包装说明：HTSSOP, TSSOP28,.25
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.68Is Samacsys：N
其他特性：OPERATES IN ADJUSTABLE MODE FROM 0.6 TO 3V模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE最大输入电压：15 V
最小输入电压：3.6 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.7 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：5.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.2 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：4600 kHz技术：CMOS
温度等级：OTHER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：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

LTC3634EFE#TRPBF 数据手册

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LTC3634  
15V Dual 3A Monolithic  
Step-Down Regulator  
for DDR Power  
FEATURES  
DESCRIPTION  
n
3.6V to 15V Input Voltage Range  
TheLTC®3634isahighefficiency,dual-channelmonolithic  
synchronous step-down regulator which provides power  
supply and bus termination rails for DDR1, DDR2, and  
DDR3 SDRAM controllers. The operating input voltage  
range is 3.6V to 15V, making it suitable for point-of-load  
power supply applications from a 5V or 12V input, as well  
as various battery powered systems.  
n
3A Output Current per Channel  
n
Up to 95% Efficiency  
n
Selectable 90°/180° Phase Shift Between Channels  
n
Adjustable Switching Frequency: 500kHz to 4MHz  
n
VTTR = V  
/2 = V Reference  
DDQ  
TT  
n
n
n
n
1.6% Accurate VTTR at 0.75V  
Optimal V Range: 0.6V to 3V  
OUT  
The V regulated output voltage is equal to VDDQIN•0.5.  
TT  
10mA Buffered Output Supplies V Reference Voltage  
REF  
An on-chip buffer capable of driving a 10mA load pro-  
vides a low noise reference output (VTTR) also equal to  
VDDQIN•0.5.  
Current Mode Operation for Excellent Line and Load  
Transient Response  
n
n
n
n
n
External Clock Synchronization  
The operating frequency is programmable and synchro-  
nizable from 500kHz to 4MHz with an external resistor.  
The two channels can operate 180° out-of-phase, which  
relaxestherequirementsforinputandoutputcapacitance.  
The unique controlled on-time architecture is ideal for  
powering DDR applications from a 12V supply at high  
switchingfrequencies,allowingtheuseofsmallerexternal  
components.  
Short-Circuit Protected  
Input Overvoltage and Overtemperature Protection  
Power Good Status Outputs  
Available in (4mm × 5mm) QFN-28 and Thermally  
Enhanced 28-Lead TSSOP Packages  
APPLICATIONS  
n
DDR Memory Power Supplies  
The LTC3634 is offered in both 28-pin 4mm × 5mm QFN  
and 28-pin exposed pad TSSOP packages.  
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and PolyPhase are registered  
trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks  
are the property of their respective owners. Protected by U.S. Patents including 5481178,  
5847554, 6580258, 6476589, 6774611.  
TYPICAL APPLICATION  
V
IN  
Efficiency and Power Loss  
vs Load Current  
3.6V TO 15V  
47µF  
V
V
IN1  
IN2  
×2  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
2.0  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
RUN1  
RUN2  
BOOST1  
SW1  
V
= 12V  
IN  
0.1µF  
0.1µF  
1.5µH  
V
DDQ  
LTC3634  
INTV  
CC  
1.8V/3A  
PHMODE  
MODE/SYNC  
V
ON1  
2.2µF  
100µF  
×2  
VDDQIN  
24.3k  
12.1k  
0.82µH  
V
V
V
DDQ  
V
FB1  
(SINKING CURRENT)  
TT  
TT  
RT  
ITH1  
(SOURCING CURRENT)  
BOOST2  
324k  
26.4k  
560pF  
V
TT  
SW2  
0.9V/ 3A  
V
FB2  
100µF  
×4  
V
ON2  
V
REF  
ITH2  
VTTR  
0.9V  
0.01µF  
SGND PGND  
18k  
910pF  
2
3
0
0.5  
1
1.5  
2.5  
3634 TA01a  
LOAD CURRENT (A)  
3634 TA01b  
3634fc  
1
For more information www.linear.com/LTC3034  
1234567...28

中文翻译

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LTC3634EFE#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3634EFE#PBF Linear

完全替代

 LTC3634 - 15V Dual 3A Monolithic Step-Down Regulator for DDR Power; Package: TSSOP; Pins:

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