MCP1650DM-LED2 Microchip Technology, MCP1650DM-LED2 Datasheet - Page 9

• Manufacturer Part Number: MCP1650DM-LED2
• Description: BOARD DEMO FOR MCP1650 WHITE LED
• Manufacturer: Microchip Technology

Specifications of MCP1650DM-LED2

• Current - Output / Channel: 15mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 32.4V
• Features: Dimmable
• Voltage - Input: 2.7 ~ 4.5V
• Utilized Ic / Part: MCP1650
• Core Chip: MCP1650
• Topology: Boost
• Output Current: 560mA
• No. Of Outputs: 1
• Input Voltage: 2.7V To 5.5V
• Kit Contents: Board
• Development Tool Type: Hardware - Eval/Demo Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1.1
© 2005 Microchip Technology Inc.
INTRODUCTION
The number of applications that utilize white LEDs has steadily increased due to the
extended usage of Liquid Crystal Displays (LCDs) in automotive and cellular telephone
displays, PDAs, handheld electronic games and computer monitors. In order to view
the information on these displays, a light source is needed. Typically, this light source
has been provided by Cold Cathode Flourescent Tubes (CCFT). New product designs
are using White or Blue LEDs as the backlighting source. The MCP1650 is an excellent
choice for driving nine white LEDs with an efficiency of 80%. The peak intensity is set
by the feedback (FB) to the MCP1650. Dimming is accomplished by pulse-width
modulating the shutdown pin of the device.
This chapter covers the following topics:
• What is the MCP1650 Multiple White LED Demo Board?
• What the MCP1650 Multiple White LED Demo Board Kit includes?
FIGURE 1-1:
Chapter 1. Product Overview
2.7V - 4.5V supplied by
3 Alkaline Batteries
Input Voltage:
MCP1650 Multiple White LED Demo Board Block Diagram.
MCP1650 MULTIPLE WHITE LED
DEMO BOARD USER’S GUIDE
Features provided by
On/Off and Dimming
including MCP1650
Momentary Switch
Boost Power Train
PIC10F202
DS51586A-page 5