Datasheet

6 LED Lighting Solutions Design Guide www.microchip.com/lighting
LED Lighting Solutions
Literature on the Web
■
MCP1650/51/52/53 Data Sheet, DS21876
■
AN980 – Designing a Boost-Switching Regulator with
the MCP1650, DS00980
■
DG10 – Power Solutions Design Guide, DS21913
High Efficiency LED Smart Driver
9-13 volt systems easily adapt to a Smart Driver Circuit
to drive High Power LEDs using the MCP1702, MCP1652
and a PIC10F202. The MCP1702 directly connected to
the 12 volt source creates a 5 volt bias supply capable of
delivering 250 mA to the intelligent boost control circuit.
The LEDs are powered by the source voltage boosted by the
MCP1652, minimizing the current requirements for the 5V
power system. A PIC10F202 adds intelligence to the circuit
providing a means for thermal protection, load open and
short circuit protection as well as the capability of a user
interface to control dimming and other features.
Low Battery Detect enables the designer to determine
a trip point for a low battery condition to make “smart”
adjustments to the circuit function with the PIC10F202. The
Power Good Indication enables the designer to determine
when output voltage conditions are correct.
MCP165X Driver Devices
Device Special Features Package
MCP1650 Standard Device 8-Pin MSOP
MCP1651 Low Battery Detect 8-Pin MSOP
MCP1652 Power Good Indication 8-Pin MSOP
MCP1653 Low Battery Detect and
Power Good Indication
10-Pin MSOP
10 LED String
700 mA, 34V DC
PIC10F202
MCP1652
VIN
GND
FB
EXT
PG
CS
SHDN
NC
User
Interface
Dimming
Output
Control
MCP1703
5V LDO
9-13V DC
LED Smart Driver with 12V Input