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LTC3823EUH#TRPBF PDF预览

LTC3823EUH#TRPBF

更新时间： 2024-02-02 16:05:37
品牌 Logo 应用领域
凌特 - Linear 电阻器控制器
页数 文件大小 规格书
26页 302K
描述
LTC3823 - Fast No Rsense Step-Down Synchronous DC/DC Controller with Differential Output Sensing, Tracking and PLL; Package: QFN; Pins: 32; Temperature Range: -40°C to 85°C

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LTC3823EUH#TRPBF 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, LCC32,.2SQ,20
针数：32Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：2.85模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE最大输入电压：36 V
最小输入电压：4.5 V标称输入电压：15 V
JESD-30 代码：S-PQCC-N32JESD-609代码：e3
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：85 °C最低工作温度：-40 °C
最大输出电流：4 A标称输出电压：5 V
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）：260
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：INDUSTRIAL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：5 mmBase Number Matches：1

LTC3823EUH#TRPBF 数据手册

 浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第2页浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第3页浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第4页浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第5页浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第6页浏览型号LTC3823EUH#TRPBF的Datasheet PDF文件第7页 
LTC3823  
TM  
Fast No R  
Step-Down  
SENSE  
Synchronous DC/DC Controller  
with Differential Output Sensing,  
Tracking and PLL  
FEATURES  
DESCRIPTION  
TheLTC®3823isasynchronousstep-downswitchingregu-  
latorcontrollerwithtrueremotedifferentialoutputsensing  
andoutputvoltageup/downtrackingcapability.Itsadvanced  
functionsandhighaccuracyreferenceareidealforpowering  
high performance server, ASIC and computer memory  
systems.  
n
Wide V Range: 4.5V to 36V  
IN  
n
0.67%, 0.6V Reference Voltage  
n
Output Voltage Tracking Capability  
True Remote Sensing Differential Amplifier  
n
n
Sense Resistor Optional  
True Current Mode Control  
n
n
2% to 90% Duty Cycle at 200kHz  
The LTC3823 uses a constant on-time, valley current  
mode control architecture to deliver very low duty fac-  
tors without requiring a sense resistor. The operating  
frequency is selected by an external resistor and is com-  
pensatedforvariationsininputsupplyvoltage. Aninternal  
phase-locked loop allows the IC to be synchronized to an  
external clock.  
n
t
< 100ns  
ON(MIN)  
n
n
n
n
n
n
n
n
n
Phase-Locked Loop Frequency Synchronization  
Powerful Dual N-Channel MOSFET Driver  
Adjustable Cycle-by-Cycle Current Limit  
Adjustable Switching Frequency  
Programmable Soft-Start  
Current Foldback Protection (Disabled at Start-Up)  
Output Overvoltage Protection  
Micropower Shutdown: 30μA  
Power Good Output Voltage Monitor Tracks the  
Reference Input Pin  
Available in (5mm × 5mm) 32-Lead QFN and  
28-Lead SSOP Narrow Packages  
Fault protection is provided by an overvoltage compara-  
tor and input undervoltage lockout. The regulator current  
limit is user programmable. A wide supply range allows  
voltages as high as 36V to be stepped down to as low as  
a 0.6V output. When using remote sense, output voltages  
n
up to 3.3V can be developed, and up to 90% of V without  
IN  
remote sense. Power supply sequencing is accomplished  
APPLICATIONS  
using an external soft-start timing capacitor.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
n
Distributed Power Systems  
Server Power Supplies  
No R  
is a trademark of Linear Technology Corporation. All other trademarks are the  
SENSE  
property of their respective owners. Protected by U.S. Patents including 5481178, 5847554,  
6580258, 6304066, 6476589, 6774611.  
n
TYPICAL APPLICATION  
Efficiency and Power Loss  
vs Load Current  
High Efficiency Step-Down Converter  
97  
96  
95  
94  
93  
92  
91  
90  
89  
88  
87  
10  
1
PGOOD  
I
ON  
V
V
= 5V  
IN  
OUT  
68k  
V
= 2.5V  
IN  
5V TO 28V  
V
0.01μF  
IN  
FIGURE 12 CIRCUIT  
10k  
10μF  
35V  
s3  
Si4884  
1.8μH  
TG  
PLLFLTR  
PLLIN  
V
OUT  
EFFICIENCY  
0.1μF  
SW  
2.5V  
10A  
TRACK/SS  
0.22μF  
BOOST  
+
180μF  
4V  
s2  
I
TH  
POWER LOSS  
10k  
LTC3823  
CMDSH-3  
1000pF  
V
0.1  
0.01  
SGND  
RUN  
INTV  
DRV  
CC  
CC  
Si4874  
B340A  
V
ON  
BG  
OUT  
+
SENSE  
V
RNG  
10μF  
V
–
DIFFOUT  
SENSE  
9.5k  
0.1  
1
10  
3823 TA01b  
PGND  
LOAD CURRENT (A)  
V
FB  
+
V
V
OUTSENSE  
3k  
–
OUTSENSE  
3823 TA01a  
3823fd  
1
1234567...26

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