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White LED Step-Up Regulator
EC4513
Preliminary
PAGE
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DR18EV9005-VER1.0
PIN Desription
PIN NUMBER
PIN NAME
DECRIPTION
1
COMP
Compensation pin. A compensation cap (2200pF to 0.1uF) is normally between this pin and SGND
2
CNTL
Control pin for dimming and shut-down. A voltage between 270mV and 5.5V
controls the brightness, and less then 200mV shuts down the converter.
3
VOUT
Output voltage sense. Use for over voltage protection
4
LX
Inductor connection pin. The drain of internal MOSFET.
5
PGND
Power Ground pin. The source of internal MOSFET.
6
SGND
Signal Ground. Ground pin for internal control circuitry. Needs to connect to PGND at only
one point
7
CS
Current sense pin. Connect to sensing resistor to set the LED bias current.
8
VIN
Power supply for internal control circuitry
Block Diagram
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