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LM25018 Datenblatt(PDF) 1 Page - Texas Instruments

Teilenummer LM25018
Bauteilbeschribung  LM25018 48-V, 325-mA Constant On-Time Synchronous Buck Regulator
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LM25018 Datenblatt(HTML) 1 Page - Texas Instruments

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LM25018
SNVS953D – DECEMBER 2012 – REVISED DECEMBER 2014
LM25018 48-V, 325-mA Constant On-Time Synchronous Buck Regulator
1 Features
3 Description
The LM25018 device is a 48-V, 325-mA synchronous
1
Wide 7.5-V to 48-V Input Range
step-down regulator with integrated high-side and
Integrated 325-mA, High-Side and
low-side MOSFETs. The constant on-time (COT)
Low-Side Switches
control scheme employed in the LM25018 device
No Schottky Required
requires no loop compensation, provides excellent
transient response, and enables very high step-down
Constant On-time Control
ratios. The on-time varies inversely with the input
No Loop Compensation Required
voltage resulting in nearly constant frequency over
Ultra-Fast Transient Response
the input voltage range. A high-voltage startup
regulator provides bias power for internal operation of
Nearly Constant Operating Frequency
the IC and for integrated gate drivers.
Intelligent Peak Current Limit
A peak current-limit circuit protects against overload
Adjustable Output Voltage from 1.225 V
conditions. The undervoltage lockout (UVLO) circuit
Precision 2% Feedback Reference
allows
the
input
undervoltage
threshold
and
Frequency Adjustable to 1 MHz
hysteresis to be independently programmed. Other
protection features include thermal shutdown and
Adjustable Undervoltage Lockout
bias supply undervoltage lockout.
Remote Shutdown
The LM25018 device is available in WSON-8 and SO
Thermal Shutdown
Power PAD-8 plastic packages.
Packages:
WSON-8
Device Information(1)
SO PowerPAD™-8
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SO PowerPAD (8)
4.89 mm x 3.90 mm
LM25018
2 Applications
WSON (8)
4.00 mm x 4.00 mm
Industrial Equipment
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Smart Power Meters
Telecommunication Systems
Isolated Bias Supply
Typical Application
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.


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