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LM5017MRX/NOPB PDF预览

LM5017MRX/NOPB

更新时间: 2024-11-17 01:07:35
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德州仪器 - TI /
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31页 1944K
描述
100-V, 600-mA Constant On-Time Synchronous Buck Regulator

LM5017MRX/NOPB 数据手册

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LM5017  
SNVS783I JANUARY 2012REVISED OCTOBER 2015  
LM5017 100-V, 600-mA Constant On-Time Synchronous Buck Regulator  
1 Features  
3 Description  
The LM5017 is a 100-V, 600-mA synchronous step-  
down regulator with integrated high side and low side  
MOSFETs. The constant on-time (COT) control  
scheme employed in the LM5017 requires no loop  
compensation, provides excellent transient response,  
and enables very high step-down ratios. The on-time  
varies inversely with the input voltage resulting in  
nearly constant frequency over the input voltage  
range. A high voltage startup regulator provides bias  
power for internal operation of the IC and for  
integrated gate drivers.  
1
Wide 7.5-V to 100-V Input Range  
Integrated 100-V High-Side,  
and Low-Side Switches  
No Schottky Required  
Constant On-Time Control  
No Loop Compensation Required  
Ultra-Fast Transient Response  
Nearly Constant Operating Frequency  
Intelligent Peak Current Limit  
Adjustable Output Voltage From 1.225 V  
Precision 2% Feedback Reference  
Frequency Adjustable to 1 MHz  
Adjustable Undervoltage Lockout (UVLO)  
Remote Shutdown  
A peak current limit circuit protects against overload  
conditions. The undervoltage lockout (UVLO) circuit  
allows the input undervoltage threshold and  
hysteresis to be independently programmed. Other  
protection features include thermal shutdown and  
bias supply undervoltage lockout (VCC UVLO).  
The LM5017 device is available in WSON-8 and  
HSOP PowerPAD-8 plastic packages.  
Thermal Shutdown  
Packages:  
Device Information(1)  
WSON-8  
SO PowerPAD™-8  
PART NUMBER  
LM5017  
PACKAGE  
SO PowerPAD (8)  
WSON (8)  
BODY SIZE (NOM)  
4.89 mm × 3.90 mm  
4.00 mm × 4.00 mm  
2 Applications  
Smart Power Meters  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Telecommunication Systems  
Automotive Electronics  
Isolated Bias Supply  
Typical Application  
LM5017  
7.5V-100V  
VIN  
7
BST  
2
4
+
V
IN  
L1  
VOUT  
C
BST  
8
+
SW  
C
IN  
RON  
R
UV2  
C
VCC  
R
ON  
R
VCC  
FB  
3
FB2  
R
C
C
6
5
UVLO  
SD  
+
R
UV1  
RTN  
OUT  
R
FB1  
1
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 

LM5017MRX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM5017MR/NOPB TI

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