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LT8613EUDE#PBF

更新时间： 2024-09-17 21:11:03
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 355K
描述
LT8613 - 42V, 6A Synchronous Step-Down Regulator with Current Sense and 3µA Quiescent Current; Package: QFN; Pins: 28; Temperature Range: -40°C to 85°C

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中文翻译

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LT8613EUDE#PBF 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：QFN包装说明：3 X 6 MM, LEAD FREE, PLASTIC, QFN-28
针数：28Reach Compliance Code：compliant
风险等级：1.7Base Number Matches：1

LT8613EUDE#PBF 数据手册

 浏览型号LT8613EUDE#PBF的Datasheet PDF文件第2页浏览型号LT8613EUDE#PBF的Datasheet PDF文件第3页浏览型号LT8613EUDE#PBF的Datasheet PDF文件第4页浏览型号LT8613EUDE#PBF的Datasheet PDF文件第5页浏览型号LT8613EUDE#PBF的Datasheet PDF文件第6页浏览型号LT8613EUDE#PBF的Datasheet PDF文件第7页 
LT8613  
42V, 6A Synchronous  
Step-Down Regulator with  
Current Sense and 3µA  
Quiescent Current  
FeaTures  
DescripTion  
n
Rail-to-Rail Current Sense Amplifier with Monitor  
The LT®8613 is a compact, high efficiency, high speed  
synchronous monolithic step-down switching regulator  
that consumes only 3µA of quiescent current. Top and  
bottom power switches are included with all necessary  
circuitry to minimize the need for external components.  
The built-in current sense amplifier with monitor and  
control pins allows accurate input or output current  
regulation and limiting. Low ripple Burst Mode operation  
enables high efficiency down to very low output currents  
n
Wide Input Voltage Range: 3.4V to 42V  
Ultralow Quiescent Current Burst Mode® Operation:  
n
3μA I Regulating 12V to 3.3V  
Q
IN  
OUT  
Output Ripple < 10mV  
P-P  
n
High Efficiency Synchronous Operation:  
95% Efficiency at 3A, 5V  
94% Efficiency at 3A, 3.3V  
from 12V  
OUT  
IN  
from 12V  
IN  
OUT  
n
n
n
n
n
n
n
n
n
n
Fast Minimum Switch-On Time: 40ns  
Low Dropout Under All Conditions: 250mV at 3A  
Allows Use Of Small Inductors  
Low EMI  
while keeping the output ripple below 10mV . A SYNC  
P-P  
pin allows synchronization to an external clock. Internal  
compensation with peak current mode topology allows  
the use of small inductors and results in fast transient  
response and good loop stability. The EN/UV pin has an  
Adjustable and Synchronizable: 200kHz to 2.2MHz  
Current Mode Operation  
Accurate 1V Enable Pin Threshold  
Internal Compensation  
accurate 1V threshold and can be used to program V  
IN  
undervoltage lockout or to shut down the LT8613 reduc-  
ing the input supply current to 1µA. A capacitor on the  
TR/SS pin programs the output voltage ramp rate during  
Output Soft-Start and Tracking  
Small Thermally Enhanced 3mm × 6mm 28-Lead  
QFN Package  
start-up. The PG flag signals when V  
is within ±±9 of  
OUT  
theprogrammedoutputvoltageaswellasfaultconditions.  
The LT8613 is available in a small 28-lead 3mm × 6mm  
QFNpackagewithexposedpadforlowthermalresistance.  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
applicaTions  
n
Automotive and Industrial Supplies  
n
General Purpose Step-Down  
n
CCCV Power Supplies  
Typical applicaTion  
Efficiency at 5VOUT  
5V Step-Down Converter with 6A Output Current Limit  
100  
V
IN  
= 12V  
V
IN  
V
BST  
IN  
5.8V TO 42V  
95  
90  
85  
80  
75  
70  
65  
60  
0.1µF  
3.9µH  
10µF  
ON OFF  
EN/UV  
SYNC  
IMON  
ICTRL  
V
= 24V  
IN  
V
5V  
6A  
8mΩ  
1µF  
OUT  
SW  
LT8613  
ISP  
ISN  
BIAS  
PG  
10pF  
INTV  
CC  
TR/SS  
RT  
f
= 700kHz  
L = 3.9µH  
1M  
243k  
SW  
10µF  
60.4k  
FB  
PGND  
GND  
1µF  
100µF  
0
2
3
4
5
6
1
LOAD CURRENT (A)  
8613 TA01a  
f
= 700kHz  
8613 TA01b  
SW  
L: EPCOS B82559  
8613f  
1
For more information www.linear.com/LT8613  
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