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LTC3802EUH PDF预览

LTC3802EUH

更新时间: 2024-11-08 21:55:43
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
28页 346K
描述
Dual 550kHz Synchronous 2-Phase DC/DC Controller with Programmable Up/Down Tracking

LTC3802EUH 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:5.28模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:6 V最小输入电压:3 V
标称输入电压:5 VJESD-30 代码:R-PQCC-N32
JESD-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:最大输出电流:0.1 A
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: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:PUSH-PULL最大切换频率:850 kHz
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 mm

LTC3802EUH 数据手册

 浏览型号LTC3802EUH的Datasheet PDF文件第2页浏览型号LTC3802EUH的Datasheet PDF文件第3页浏览型号LTC3802EUH的Datasheet PDF文件第4页浏览型号LTC3802EUH的Datasheet PDF文件第5页浏览型号LTC3802EUH的Datasheet PDF文件第6页浏览型号LTC3802EUH的Datasheet PDF文件第7页 
LTC3802  
Dual 550kHz Synchronous  
2-Phase DC/DC Controller with  
Programmable Up/Down Tracking  
U
FEATURES  
DESCRIPTIO  
The LTC®3802 is a dual switching regulator controller  
optimized for high efficiency step-down conversion from  
input voltages between 3V to 30V. The controller uses a  
leading edge modulation scheme to allow extremely low  
dutycycleoperation.Theconstantfrequencyvoltagemode  
controller allows a phase-lockable frequency between  
330kHz and 750kHz. Power loss and noise due to the ESR  
of the input capacitors are minimized by operating the two  
controller output stages 180° out of phase. The synchro-  
nous buck architecture automatically shifts to Burst Mode  
operation as the output load decreases, ensuring maxi-  
mum efficiency over a wide range of load currents.  
Wide VIN Range: 3V to 30V Operation with Line  
Feedforward Compensation  
Leading Edge Modulation Architecture for  
Extremely Low Duty Cycle Operation  
Phase-Lockable Fixed Frequency: 330kHz to 750kHz  
Two 180° Out-of-Phase Controllers  
Fast Programmable Power-Up/-Down Tracking  
Programmable Current Limit Without External  
Current Sense Resistor  
Optional Burst Mode® Operation at Light Load  
±1% 0.6V Voltage Reference  
External N-Channel MOSFET Architecture  
Low Shutdown Current: <100µA  
Overvoltage Protection and PGOOD Flag  
Small 28-Lead SSOP and 32-Lead QFN Packages  
U
The LTC3802 features an onboard, trimmed 0.6V refer-  
ence and provides better than 1% regulation at the con-  
verter outputs. A separate output sense provides real time  
overvoltage protection and PGOOD sensing. An FBT pin  
programs the power-up/-down tracking between the two  
channels to meet various sequencing requirements. A  
RUN/SS pin provides soft-start and externally program-  
mable current limit protection functions.  
APPLICATIO S  
Notebook and Palmtop Computers  
Portable Instruments  
Battery-Operated Digital Devices  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
U.S. Patent Nos 5481178, 5846544, 6304066, 6580258, 5055767, 6307356  
DC Power Distribution Systems  
U
TYPICAL APPLICATIO  
V
IN  
5V TO 22V  
+
56µF  
25V  
×2  
4.7µF  
25V  
×8  
5V  
CMDSH-3  
Si7860DP  
+
CMDSH-3  
10µF  
Si7860DP  
×2  
×2  
PV  
CC  
TG1  
TG2  
1µH  
V
1µH  
OUT1  
3.3V  
15A  
V
2.5V  
15A  
BOOST2  
OUT2  
0.1µF  
0.1µF  
BOOST1  
SW1  
BG1  
SW2  
B340B  
B340B  
Si7440DP  
BG2  
PLLIN  
PLLLPF  
×2  
10k  
10k  
+
330µF  
4V  
×3  
10k  
10k  
+
330µF  
4V  
×3  
Si7440DP  
PGND  
×2  
47k  
47k  
LTC3802  
I
I
MAX1  
MAX2  
3.16k 3.16k  
560pF  
FBT  
CMPIN2  
2.21k 2.21k  
5V  
CMPIN1  
V
CC  
2200pF  
1500pF  
10Ω  
+
COMP1  
FB1  
SGND  
FCB  
COMP2  
FB2  
PHASEMD  
560pF  
0.1µF  
10µF  
390Ω  
15k  
330pF  
2200pF  
1500pF  
390Ω  
15k  
V
INFF  
330pF  
RUN/SS  
PGOOD  
3802 TA01  
10k  
0.1µF  
V
IN  
0.47µF  
5V  
3802f  
1

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