APGRD004 Microchip Technology, APGRD004 Datasheet - Page 5

• Manufacturer Part Number: APGRD004
• Description: REF DESIGN MOD AUTO AMBNT LIGHT
• Manufacturer: Microchip Technology

Specifications of APGRD004

• Main Purpose: Lighting, RGB LED Controller
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP2021, PIC12F615
• Primary Attributes: 4 Tiny Boards, Each Have: RGB LED, LIN Transceiver, Voltage Regulator, MCU
• Secondary Attributes: LIN Commands are Interpreted to Control 16,383 Colors and 1,023 Dimming Levels
• Silicon Manufacturer: Microchip
• Silicon Core Number: APGDT001
• Kit Contents: 4 Ambient Lighting Modules, Documentation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Battery Operated Boost LED Driver Example Using the MCP1650
www.microchip.com/lighting
MCP1650 Multiple White LED Demonstration Board
(MCP1650DM-LED2)
Literature on the Web
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Battery Input to 3.6V 3W LED Driver (SEPIC Converter)
LED Lighting Solutions
MCP1640/B/C/D Data Sheet, DS22234
MCP1650/51/52/53 Data Sheet, DS21876
MCP1650 Multiple White LED Demo Board
User’s Guide, DS51586
AN948 – Efficiently Powering Nine White LEDs
Using the MCP1650, DS00948
AN980 – Designing a Boost-Switching Regulator with
the MCP1650, DS00980
DG10 – Power Solutions Design Guide, DS21913
The MCP1650 Multiple White LED Demo
Board uses the MCP1650 IC to power the
nine white LEDs which are connected in
series. A PIC10F202 microcontroller in a
SOT-23 6-pin package is used to provide the
PWM signal to the MCP1650. It also accepts
a push button input that allows the user
to adjust the white LEDs to three different
intensities of 100%, 50% and 25%.
4.5-2.0V
V
V
BAT
BAT
+
-
V
BAT
+
-
OFF
OFF
ON
ON
V
CS
LBI
SHDN
IN
MCP1651
V
CS
NC
SHDN
IN
MCP1650
V
BAT
LBO
GND
EXT
FB
GND
EXT
NC
FB
Low Battery
Warning
Driving LEDs with a SEPIC Regulator
The Single-Ended Primary Inductance Converter (SEPIC)
regulator topology uses an additional inductor, but provides
the following advantages for battery powered applications:
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MCP1650 3W White LED Demonstration Board
(MCP1650DM-LED1)
Literature on the Web
■
The converter can buck or boost as the input voltage
changes.
The circuit topology provides inherent short-circuit
protection due to the use of a coupling capacitor.
MCP1650 3W White LED Demo Board User’s Guide,
DS51513
Demonstrates the MCP165X Boost Controller
product family in a battery-powered white LED
application with an input voltage range of 2.0V
to 4.5V.
33V/15 mA
9 LEDs
LED Lighting Solutions Design Guide
3W
LED
5