MPQ2490 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – Industrial Grade, 1.5A, 36V, 700kHz Step-Down Converter with Programmable Output Current Limit

MPQ2490
Industrial Grade, 1.5A, 36V, 700kHz
Step-Down Converter
with Programmable Output Current Limit
DESCRIPTION
The MPQ2490 is a monolithic step-down switch
mode converter with programmable output
current limit. It achieves 1.5A 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 MPQ2490 requires a minimum number of
readily available standard external components.
The MPQ2490 is available in QFN (3x3mm)
package.
FEATURES
 Wide 4.5V to 36V Operating Input Range
 Programmable up to 1.5A Output Current
 Output Adjustable from 0.8V to 15V
 Programmable Output Current Limit without
power loss
 0.25Ω Internal Power MOSFET Switch
 Stable with Low ESR Output Ceramic
Capacitors
 95% Efficiency @ 500mA (Vo=5V)
 Fixed 700kHz Frequency
 Thermal Shutdown
 Cycle-by-Cycle Over Current Protection
 Available in QFN10 Package
APPLICATIONS
 Industrial and Car Power Supplies
 USB Power Supplies
 Automotive Cigarette Lighter Adapters
 Power Supply for Battery Chargers
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MPQ2490 Rev. 1.02
www.MonolithicPower.com
1
7/26/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.