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LTC3812EFE-5 PDF预览

LTC3812EFE-5

更新时间： 2024-11-29 05:43:55
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
32页 420K
描述
60V Current Mode Synchronous Switching Regulator Controller

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中文翻译

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LTC3812EFE-5 技术参数

是否无铅：含铅是否Rohs认证：不符合
生命周期：Transferred零件包装代码：TSSOP
包装说明：HTSSOP, TSSOP16,.25针数：16
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.24
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：14 V最小输入电压：4.35 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G16
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：16最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP16,.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）：235
认证状态：Not Qualified座面最大高度：1.1 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：Tin/Lead (Sn/Pb)
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：20
宽度：4.4 mmBase Number Matches：1

LTC3812EFE-5 数据手册

 浏览型号LTC3812EFE-5的Datasheet PDF文件第2页浏览型号LTC3812EFE-5的Datasheet PDF文件第3页浏览型号LTC3812EFE-5的Datasheet PDF文件第4页浏览型号LTC3812EFE-5的Datasheet PDF文件第5页浏览型号LTC3812EFE-5的Datasheet PDF文件第6页浏览型号LTC3812EFE-5的Datasheet PDF文件第7页 
LTC3812-5  
60V Current Mode  
Synchronous Switching  
Regulator Controller  
FEATURES  
DESCRIPTION  
The LTC3812-5 is a synchronous step-down switching  
regulator controller that can directly step down voltages  
from up to 60V input, making it ideal for telecom and  
automotive applications. The LTC3812-5 uses a constant  
on-time valley current control architecture to deliver very  
low duty cycles with accurate cycle-by-cycle current limit  
without requiring a sense resistor.  
n
High Voltage Operation: Up to 60V  
n
Large 1Ω Gate Drivers  
n
No Current Sense Resistor Required  
n
Dual N-Channel MOSFET Synchronous Drive  
n
Extremely Fast Transient Response  
n
0.5% 0.8V Voltage Reference  
n
Programmable Soft-Start  
n
Generates 5.5V Driver Supply  
A precise internal reference provides 0.5% DC accuracy.  
A high bandwidth (25MHz) error amplifier provides very  
fast line and load transient response. Large 1Ω gate driv-  
ers allow the LTC3812-5 to drive large power MOSFETs  
for higher current applications. The operating frequency  
is selected by an external resistor and is compensated for  
n
Selectable Pulse Skip Mode Operation  
n
Power Good Output Voltage Monitor  
n
Adjustable On-Time/Frequency: t  
< 100ns  
ON(MIN)  
n
n
n
n
Adjustable Cycle-by-Cycle Current Limit  
Undervoltage Lockout On Driver Supply  
Output Overvoltage Protection  
variations in V . A shutdown pin allows the LTC3812-5 to  
IN  
Thermally Enhanced 16-Pin TSSOP Package  
be turned off reducing the supply current to <230μA.  
Integrated bias control generates gate drive power from  
theinputsupplyduringstart-upandwhenanoutputshort-  
circuit occurs, with the addition of a small external SOT23  
MOSFET. When in regulation, power is derived from the  
outputforhigherefficiency.  
APPLICATIONS  
n
48V Telecom and Base Station Power Supplies  
n
Networking Equipment, Servers  
n
Automotive and Industrial Control Systems  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners. Protected by U.S. Patents,  
including 5481178, 5847554, 6304066, 6476589, 6580258, 6677210, 6774611.  
TYPICAL APPLICATION  
High Efficiency High Voltage Step-Down Converter  
V
IN  
6V TO 60V  
R
ON  
+
Efficiency vs Load Current  
100k  
C
IN  
22μF  
110k  
100  
M3  
ZXMN-  
10A07F  
I
NDRV  
ON  
V
= 12V  
IN  
100k  
95  
90  
85  
BOOST  
PGOOD  
LTC3812-5  
PGOOD  
M1  
L1  
V
TG  
V
IN  
= 42V  
RNG  
Si7850DP  
4.7μH  
0.1μF  
V
5V  
5A  
OUT  
V
= 24V  
IN  
FCB  
SW  
EXTV  
INTV  
CC  
CC  
RUN/SS  
M2  
Si7850DP  
1000pF  
I
BG  
TH  
10k  
47pF  
+
D1  
MBR1100  
C
OUT  
270μF  
200k  
5pF  
1μF  
V
FB  
PGND  
SGND  
80  
0
1
2
3
4
5
6
LOAD CURRENT (A)  
1.89k  
38125 TA01b  
38125 TA01  
38125fb  
1
1234567...32

中文翻译

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