High Efficiency 1MHz, Step up Regulator

EC4513

Page 2 of 15

3G16N-Rev.P001

Pin Description

Pin Number

Pin Name

Description

1

FB

Regulator Feedback Pin. Connect a current sense resistor to GND to set the LED Current.

2

COMP

Error Amplifier Output. Connect a 0.22uF capacitor for compensation and soft-start. When

EN is pulled low, an internal switch will discharge the COMP voltage to 0V

3

OVP

Output Over Voltage Monitor Pin. Tie to VOUT for OVP function.

4

EN

Enable Control Input. Pull EN above 2.4V to enable the device. Pull EN below 0.4V to

disable the device. The EN Pin cannot be left floating.

5

PGND

Power GND. Source of the internal N-channel power MOSFET.

6

LX

Internal Power MOSFET Drain.

7

VIN

Supply Voltage Input.

8

BP

Output of The Internal 5V Regulator. Connect a 1uF bypass capacitor to GND Do not apply

an external load to BP

9

GND

Signal Ground.

10

ALS

Ambient Light Sensor Input. Allow the light sensor to control the FB voltage for LED

dimming. If the ALS function is not used, tie the ALS pin to BP pin.

Ordering Information

Part Number

Package

Marking

Marking Information

EC4513NNFNR

DFN 3x3-10

4513

LLLL

1.LLLL：Last four number of Lot No