Diodes AL8812 User Manual
Al8812, Description, Features
AL8812
Document number: DS37099 Rev. 1 - 2
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March 2014
© Diodes Incorporated
AL8812
BOOST/BUCK DC-DC CONVERTER FOR DIMMABLE MR16 LED LAMPS
Description
The AL8812 is a monolithic control circuit containing the primary
functions required for DC-to-DC converters with MOSFET in one
package. These devices consist of an internal temperature
compensated reference, comparator, controlled duty cycle oscillator
with an active current limit circuit, driver and high current output
switch. Additionally a 60V, 3.6A MOSFET is integrated for reduced
BOM cost and size. This series is specifically designed for buck and
boost applications with a minimum number of external components.
Features
•
Operation from 3.0V to 20V Input
•
Integrated 60V, 3.6A MOSFET
•
Low Standby Current
• Current
Limiting
•
Output Voltage Adjustable
•
Frequency Operation to 100 kHz
•
Precision 2% Reference
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
Applications
• Low Voltage LED Lighting such as MR-16
• General Purpose DC-DC Converter
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. S more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
Dimmable MR-16 LED Driver System Diagram
(For detailed schematic please contact your Diodes Sales Representative)
NC
GATE
INPUT
VCC
SENSE
DRIVE
SW/C
SW/E
GND
TIMING
SOURCE
DRAIN
U-DFN6040-12
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