Texas Instruments LM5017 Isolated Bias Supply Evaluation Board LM5017ISOEVAL/NOPB LM5017ISOEVAL/NOPB 数据表
产品代码
LM5017ISOEVAL/NOPB
+
+
+
V
IN
BST
RON
RTN
SW
VCC
FB
VIN
VOUT
R
FB1
R
C
R
UV1
R
ON
C
OUT
C
BST
C
IN
R
FB2
R
UV2
L1
UVLO
+
C
VCC
LM5017
7.5V-100V
1
2
3
4
5
6
8
7
SD
SNVS783G – JANUARY 2012 – REVISED DECEMBER 2013
LM5017 100 V, 600 mA Constant On-Time Synchronous Buck Regulator
Check for Samples:
1
FEATURES
APPLICATIONS
2
•
Wide 7.5 V to 100 V Input Range
•
Smart Power Meters
•
Integrated 100 V, High and Low Side Switches
•
Telecommunication Systems
•
No Schottky Required
•
Automotive Electronics
•
Constant On-time Control
•
Isolated Bias Supply
•
No Loop Compensation Required
DESCRIPTION
•
Ultra-Fast Transient Response
The LM5017 is a 100 V, 600 mA synchronous step-
•
Nearly Constant Operating Frequency
down regulator with integrated high side and low side
•
Intelligent Peak Current Limit
MOSFETs.
The
constant-on-time
(COT)
control
scheme employed in the LM5017 requires no loop
•
Adjustable Output Voltage from 1.225 V
compensation, provides excellent transient response,
•
Precision 2% Feedback Reference
and enables very low step-down ratios. The on-time
•
Frequency Adjustable to 1 MHz
varies inversely with the input voltage resulting in
nearly constant frequency over the input voltage
nearly constant frequency over the input voltage
•
Adjustable Undervoltage Lockout (UVLO)
range. A high voltage startup regulator provides bias
•
Remote Shutdown
power for internal operation of the IC and for
•
Thermal Shutdown
integrated gate drivers.
•
Packages:
A peak current limit circuit protects against overload
–
WSON-8
conditions. The undervoltage lockout (UVLO) circuit
allows
allows
the
input
undervoltage
threshold
and
–
SO PowerPAD-8
hysteresis to be independently programmed. Other
protection features include thermal shutdown and
bias supply undervoltage lockout (V
protection features include thermal shutdown and
bias supply undervoltage lockout (V
CC
UVLO).
The LM5017 is available in WSON-8 and SO
PowerPAD-8 plastic packages.
PowerPAD-8 plastic packages.
Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.