LM5001_15 Datasheet, PDF (1/26 Pages) Texas Instruments – High-Voltage Switch-Mode Regulator

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LM5001, LM5001-Q1
SNVS484H – JANUARY 2007 – REVISED JULY 2015
LM5001x High-Voltage Switch-Mode Regulator
1 Features
•1 AEC-Q100 Qualified (T_J = –40°C to 125°C)
• Integrated 75-V N-Channel MOSFET
• Ultra-Wide Input Voltage Range from
3.1 V to 75 V
• Integrated High Voltage Bias Regulator
• Adjustable Output Voltage
• 1.5% Output Voltage Accuracy
• Current Mode Control with Selectable
Compensation
• Wide Bandwidth Error Amplifier
• Integrated Current Sensing and Limiting
• Integrated Slope Compensation
• 85% Maximum Duty Cycle Limit
• Single Resistor Oscillator Programming
• Oscillator Synchronization Capability
• Enable / Undervoltage Lockout (UVLO) Pin
• Thermal Shutdown
2 Applications
• DC-DC Power Supplies for Industrial,
Communications, and Automotive Applications
• Boost, Flyback, SEPIC and Forward Converter
Topologies
3 Description
The LM5001 high-voltage switch-mode regulator
features all of the functions necessary to implement
efficient high-voltage Boost, Flyback, SEPIC and
Forward converters, using few external components.
This easy-to-use regulator integrates a 75-V N-
Channel MOSFET with a 1-A peak current limit.
Current mode control provides inherently simple loop
compensation and line-voltage feed-forward for
superior rejection of input transients. The switching
frequency is set with a single resistor and is
programmable up to 1.5 MHz. The oscillator can also
be synchronized to an external clock. Additional
protection features include: current limit, thermal
shutdown, undervoltage lockout and remote
shutdown capability.
Device Information⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE
LM5001
SOIC (8)
WSON (8)
4.9 mm x 3.91 mm
4 mm x 4 mm
LM5001Q1
SOIC (8)
4.9 mm x 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
+12V to +36V
+48V
VIN
EN
VCC
LM5001
SW
COMP
FB
RT
GND
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.