MP24892 Datasheet: Step Down White LED Driver





MP24892 Step Down White LED Driver Datasheet

Part Number MP24892
Description Step Down White LED Driver
Manufacture MPS
Total Page 9 Pages
PDF Download Download MP24892 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP24892 is a high-efficiency step-down converter that functions in continuous current mode to drive high-b rightness LED. It can take a wide input voltage range of 6V–45V. The MP24892 employs a hysteretic control architect ure to regulate a high-accuracy LED cur rent, which is measured through an exte rnal high-side current-sensing resistor . Moreover, this control scheme provide s optimal circuit stabilization and a v ery quick response time without loop co mpensation. Its low 202mV average feedb ack voltage reduces power loss and impr oves the converter efficiency. The MP24 892 implements PWM and analog dimming t ogether through the DIM pin. The MP2489 2 includes thermal overload protection that prevents damage in the event of an output overload. The MP24892 is availa ble in a small TSOT23-5 package. MP248 92 Step Down White LED Driver with Wide 6V–45V Input Voltage FEATURES  Wi de 6V-to-45V Input Range  1A Output Current  High Efficiency (>95%).

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The Future of Analog IC Technology
DESCRIPTION
The MP24892 is a high-efficiency step-down
converter that functions in continuous current
mode to drive high-brightness LED. It can take
a wide input voltage range of 6V–45V.
The MP24892 employs a hysteretic control
architecture to regulate a high-accuracy LED
current, which is measured through an external
high-side current-sensing resistor. Moreover,
this control scheme provides optimal circuit
stabilization and a very quick response time
without loop compensation. Its low 202mV
average feedback voltage reduces power loss
and improves the converter efficiency.
The MP24892 implements PWM and analog
dimming together through the DIM pin.
The MP24892 includes thermal overload
protection that prevents damage in the event of
an output overload.
The MP24892 is available in a small TSOT23-5
package.
MP24892
Step Down White LED Driver
with Wide 6V45V Input Voltage
FEATURES
Wide 6V-to-45V Input Range
1A Output Current
High Efficiency (>95%)
Hysteresis Control
PWM & Analog Dimming
1000:1 PWM Dimming Resolution
Thermal Shutdown
Inherent Open LED Protection
Short LED Protection
Available in a TSOT23-5 Package
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 the Products, Quality
Assurance page.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
45
D1
CIN RSENSE
IN RS
MP24892
EN/DIM
GND
SW
L1
MP24892 Rev. 1.0
www.MonolithicPower.com
11/3/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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