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LM25019MR Scheda tecnica(PDF) 1 Page - Texas Instruments

Il numero della parte LM25019MR
Spiegazioni elettronici  100-mA Constant On-Time Synchronous Buck Regulator
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LM25019MR Scheda tecnica(HTML) 1 Page - Texas Instruments

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LM25019
SNVS952E – DECEMBER 2012 – REVISED NOVEMBER 2015
LM25019 48-V, 100-mA Constant On-Time Synchronous Buck Regulator
1 Features
3 Description
The LM25019 is a 48-V, 100-mA synchronous step-
1
Wide 7.5-V to 48-V Input Range
down regulator with integrated high-side and low-side
Integrated 100-mA High-Side and
MOSFETs. The constant on-time (COT) control
Low-Side Switches
scheme employed in the LM25019 requires no loop
No Schottky Required
compensation, provides excellent transient response,
and enables very high step-down ratios. The on-time
Constant On-Time Control
varies inversely with the input voltage resulting in
No Loop Compensation Required
nearly constant frequency over the input voltage
Ultra-Fast Transient Response
range. A high-voltage start-up regulator provides bias
power for internal operation of the IC and for
Nearly Constant Operating Frequency
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 LM25019 is available in 8-pin WSON and 8-pin
Thermal Shutdown
SO PowerPAD plastic packages.
Packages:
8-Pin WSON
Device Information(1)
8-Pin SO PowerPAD™
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SO PowerPAD (8)
4.89 mm x 3.90 mm
LM25019
2 Applications
WSON (8)
4.00 mm x 4.00 mm
Industrial Equipments
(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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