MP24894 Datasheet: Step-Down WLED-Current Controller





MP24894 Step-Down WLED-Current Controller Datasheet

Part Number MP24894
Description Step-Down WLED-Current Controller
Manufacture MPS
Total Page 12 Pages
PDF Download Download MP24894 Datasheet PDF

Features: The Future of Analog IC Technology MP24 894 Step-Down WLED-Current Controller w ith Wide 6V to 60V Input Voltage DESCR IPTION The MP24894 is a high-efficiency step-down controller. It is designed t o operate in continuous current mode (C CM) to power LEDs of high-brightness wi th a wide input voltage range of 6V to 60V. The MP24894 employs a hysteretic c ontrol architecture that accurately reg ulates LED current with a feedback comi ng from an external high-side current-s ense resistor. This control scheme opti mizes circuit stabilization and fast re sponse time without loop compensation. Its low 200mV average feedback voltage reduces power loss and improves the con verter’s efficiency. The MP24894 impl ements PWM and analog dimming together through the EN/DIM pin. The MP24894 inc ludes thermal overload protection in ca se of output overload. The MP24894 is a vailable in TSOT6 package. FEATURES Wide 6V to 60V Input Range • Able t o Drive >1A LED Load • Hysteresis Control • High Efficiency (>95%) • .

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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
VIN
6V-60V
CIN
D1
RSENSE
IN RS
VCC
MP24894
EN/DIM
GND
DR
L1
MP24894 Rev 1.01
www.MonolithicPower.com
12/20/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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