MP2499 Datasheet, PDF (1/12 Pages) Monolithic Power Systems – Integrated 100V Load Dump Protection 2A, 100kHz Step Down Regulator with Programmable Output Current

The Future of Analog IC Technology
MP2499
Integrated 100V Load Dump Protection
2A, 100kHz Step Down Regulator with
Programmable Output Current
DESCRIPTION
The MP2499 is a monolithic step-down switch
mode converter with a programmable output
current limit and an integrated input over-
voltage protection switch. It achieves 2.0A
continuous output current over a wide input
supply range with excellent load and line
regulation.
The maximum output current can be
programmed by sensing current through the
inductor DC resistance (DCR) or an accurate
sense resistor.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown.
The MP2499 can survive high-voltage transients
such as those found in automotive and industrial
applications.
The MP2499 requires a minimum number of
readily available standard external components.
The MP2499 is available in a 16-pin SOIC
package.
FEATURES
• Replaces External Transorb
• Supports 12V/24V Systems
• Input Surge Protection Up to 100V
• Programmable Output Current up to 2.0A
• Output Adjustable
• Fixed 100kHz Frequency
• 0.25Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• 92% Efficiency @ 500mA (Vo=5V)
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Available in a 16-Pin SOIC Package
APPLICATIONS
• 12V/24V Systems with High Input Surge
• Automotive Cigarette Lighter Adapters
• Power Supply for Linear Chargers
• Industrial Power Supplies
• Avionics
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2499 Rev. 0.91
www.MonolithicPower.com
1
11/24/2010
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