MP24894 Datasheet, PDF (1/12 Pages) Monolithic Power Systems – Step-Down WLED-Current Controller with Wide 6V to 60V Input Voltage

The Future of Analog IC Technology
MP24894
Step-Down WLED-Current Controller
with Wide 6V to 60V Input Voltage
DESCRIPTION
The MP24894 is a high-efficiency step-down
controller. It is designed to operate in
continuous current mode (CCM) to power LEDs
of high-brightness with a wide input voltage
range of 6V to 60V.
The MP24894 employs a hysteretic control
architecture that accurately regulates LED
current with a feedback coming from an external
high-side current-sense resistor. This control
scheme optimizes circuit stabilization and fast
response time without loop compensation. Its
low 200mV average feedback voltage reduces
power loss and improves the converter’s
efficiency.
The MP24894 implements PWM and analog
dimming together through the EN/DIM pin.
The MP24894 includes thermal overload
protection in case of output overload.
The MP24894 is available in TSOT6 package.
FEATURES
• Wide 6V to 60V Input Range
• Able to Drive >1A LED Load
• Hysteresis Control
• High Efficiency (>95%)
• 2500:1 PWM Dimming Ratio
• Open LED Protection
• Short LED Protection
• Thermal Shutdown
APPLICATIONS
• Low Voltage Halogen Replacement
• Low Voltage General Illumination
• Automotive/Decorative LED Lighting
• Signs/Emergency Lighting
• LED Backlighting
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
V_IN
6V-60V
C_IN
D1
R_SENSE
IN
RS
VCC
MP24894
L1
EN/DIM
DR
GND
MP24894 Rev 1.01
www.MonolithicPower.com
1
12/20/2012
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