MP24893 Datasheet, PDF (1/12 Pages) Monolithic Power Systems – Step Down White LED Driver with Wide 6V-to-36V Input Voltage

The Future of Analog IC Technology
DESCRIPTION
The MP24893 is a high efficiency step-down
converter designed in continuous current mode
for driving the high brightness LEDs from wide
input voltage of 6V to 36V.
The MP24893 employs hysteretic control
architecture to regulate a highly accurate LED
current, which is measured through an external
high-side current-sense resistor. Moreover, this
control scheme provides optimal circuit
stabilization and a very quick response time
without loop compensation. Its low 200mV
average feedback voltage reduces power loss
and improves the converter efficiency.
The MP24893 implements PWM and analog
dimming together through the DIM pin.
The MP24893 includes under-voltage lockout,
thermal overload protection to prevent damage
in the event of an output overload.
The MP24893 is available in TSOT23-5 and
QFN6 packages.
MP24893
Step Down White LED Driver
with Wide 6V-to-36V Input Voltage
FEATURES
• Internal 36V MOSFET
• Wide 6V-to-36V Input Range
• 1A Output Current
• High Efficiency
• Hysteretic Control
• PWM and Analog Dimming
• 1000:1 PWM Dimming Resolution
• UVLO, Thermal Shutdown
• Available in TSOT23-5 and QFN6 Packages
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 Products, Quality Assurance
page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
D1
V
IN
6V- 36V
C_IN
R_SENSE
IN
RS
MP24893
L1
EN/DIM
GND
SW
MP24893 Rev.1.02
www.MonolithicPower.com
1
12/7/2012
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