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LTC3708EUH#TR PDF预览

LTC3708EUH#TR

更新时间: 2024-02-09 19:47:22
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
32页 405K
描述
LTC3708 - Fast 2-Phase, No RSENSE Buck Controller with Output Tracking; Package: QFN; Pins: 32; Temperature Range: -40°C to 85°C

LTC3708EUH#TR 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, LCC32,.2SQ,20
针数:32Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16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:6.5 V
最小输入电压:4.5 V标称输入电压:5 V
JESD-30 代码:S-PQCC-N32JESD-609代码:e0
长度:5 mm湿度敏感等级:1
功能数量:1端子数量:32
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装等效代码:LCC32,.2SQ,20封装形状:SQUARE
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:PUSH-PULL技术:CMOS
温度等级:COMMERCIAL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

LTC3708EUH#TR 数据手册

 浏览型号LTC3708EUH#TR的Datasheet PDF文件第2页浏览型号LTC3708EUH#TR的Datasheet PDF文件第3页浏览型号LTC3708EUH#TR的Datasheet PDF文件第4页浏览型号LTC3708EUH#TR的Datasheet PDF文件第5页浏览型号LTC3708EUH#TR的Datasheet PDF文件第6页浏览型号LTC3708EUH#TR的Datasheet PDF文件第7页 
LTC3708  
Fast 2-Phase, No R  
SENSE  
Buck Controller with  
Output Tracking  
FEATURES  
DESCRIPTION  
The LTC®3708 is a dOal, 2-phase synchronoOs step-down  
switching regOlator with oOtpOt voltage Op/down tracking  
capability. The IC allows either coincident or ratiometric  
tracking. MOltiple LTC3708s can be daisy-chained in ap-  
plications reqOiring more than two voltages to be tracked.  
Power sOpply seqOencing is accomplished Osing an  
external soft-start timing capacitor.  
n
Very Low Duty Factor Operation (t  
< 85ns)  
ON(MIN)  
n
No R  
Option for Maximum Efficiency  
SENSE  
n
n
n
n
n
n
n
n
n
n
n
n
n
Very Fast Transient Response  
Programmable Output Voltage Up/Down Tracking  
2-Phase Operation Reduces Input Capacitance  
0.6V ±±1 ꢀOtpOt Voltage Reference  
External FreqOency Synchronization  
Monotonic Soft-Start  
TheLTC3708Osesaconstanton-time,valleycOrrentmode  
controlarchitectOretodeliververylowdOtyfactorswithoOt  
reqOiring a sense resistor. perating freqOency is selected  
byanexternalresistorandiscompensatedforvariationsin  
inpOtsOpplyvoltage. Aninternalphase-lockedloopallows  
the IC to be synchronized to an external clock.  
ꢀnboard High COrrent MꢀSFET Drivers  
Wide V Range: Up to 36V  
IN  
AdjOstable Cycle-by-Cycle COrrent Limit  
Instant ꢀOtpOt ꢀvervoltage Protection  
ꢀptional Short-CircOit ShOtdown Timer  
Power Good ꢀOtpOt with ±00μs Masking  
Available in 5mm × 5mm QFN Package  
FaOlt protection is provided by an oOtpOt overvoltage  
comparator and an optional short-circOit shOtdown timer.  
The regOlator cOrrent limit level is Oser programmable. A  
wide sOpply range allows voltages as high as 36V to be  
stepped down to 0.6V oOtpOt.  
APPLICATIONS  
n
Digital Signal Processors  
Network Servers  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
No R  
is a trademark of Linear Technology Corporation.  
SENSE  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
High Efficiency Dual Output Step-Down Converter  
V
V
(0.5V/DIV)  
(0.5V/DIV)  
ꢀUT±  
V
IN  
3.3V Tꢀ 28V  
ꢀUT2  
5V  
±0μF  
50V  
s4  
±μF  
4.7μF  
±0Ω  
±00k  
+
V
TG±  
DRV  
CC  
PGꢀꢀD  
TG2  
CC  
M±  
M3  
M2  
M4  
L±  
L2  
±.2μH  
3708 TA0±b  
2ms/DIV  
BꢀꢀST±  
BꢀꢀST2  
±.4μH  
V
V
±.8V  
±5A  
0.22μF  
0.22μF  
ꢀUT±  
2.5V  
±5A  
ꢀUT2  
SW±  
SENSE±  
SW2  
+
+
+
+
PꢀSCAP  
330μF  
4V  
PꢀSCAP  
470μF  
2.5V  
SENSE2  
±00  
95  
90  
85  
80  
75  
70  
9.0  
7.5  
6.0  
4.5  
3.0  
±.5  
0
B340A  
B340A  
LTC3708  
BG±  
BG2  
s2  
s2  
SENSE2  
SENSE±  
PGND±  
±2.±k  
±2.±k  
±9.±k  
PGND2  
V
V
FB2  
FCB  
I
ꢀN2  
I
TH2  
EXTLPF  
TRACK±  
V
RNG2  
FB±  
TRACK2  
f
±M  
IN  
V
IN  
V
I
IN  
ꢀN±  
20V Tꢀ 2.5V  
IN ꢀUT  
±.5M  
I
TH±  
5V Tꢀ 2.5V  
IN  
ꢀUT  
INTLPF  
RUN/SS  
SGND  
20V Tꢀ ±.8V  
IN  
ꢀUT  
5V Tꢀ ±.8V  
IN  
ꢀUT  
6.04k  
6.04k  
0.0±μF  
33k  
6.04k  
±0k  
0.0±μF  
±k  
33k  
V
RNG±  
±00k  
0.±μF  
0.0±μF  
25k  
±80pF  
±80pF  
0.±μF  
0.0±  
0.±  
±
±0  
5V  
LꢀAD CURRENT (A)  
3708 TA0±  
L±: PANASꢀNIC ETQP3HIR4BF  
L2: PANASꢀNIC ETQP2HIR2BF  
M±, M2: RENESAS HAT2±68  
M3, M4: RENESAS HAT2±65  
3708 TA0±c  
3708fb  
1

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