Diodes AP3154FG-EVM Quick Start Manual

Features
•
V Range: 2.7V to 5.5V
IN
•
Up to 88% Maximum Power Efficiency
•
1X, 1.5X and 2X Charge Pump Modes
•
Drives up to Four White LEDs
•
120mA Maximum Total Output Current
•
Programmable Switching Frequency (Default
1.2MHz)
•
Spread Spectrum Control with 10% Frequency
Deviation
•
1-Wire Serial Digital Interface or PWM Dimming
Control
•
Soft-Start During Power-up and Mode Switching
•
Soft-Stop During Shutdown
•
Short-Circuit Protection
•
Over-Voltage Protection and Under-Voltage
Lockout
•
IQ <6μA in Shutdown
•
Thermally-Enhanced QFN3030-12 Package:
Available in "Green" Molding Compound (No Br,
Sb)
•
Lead Free Finish / RoHS Compliant

Ordering Information

Device
AP3154AFG
AP3154FG-EVM Rev.1
AP3154A Evaluation Module
120mA HIGH EFFICIENCY WHITE LED DRIVER
Package Code Packaging
FG QFN3030-12
www.diodes.com
Description
The AP3154A is a high efficiency charge-pump white
LED driver with 1x, 1.5x and 2x operating modes. It
operates on power supplies from 2.7v to 5.5v and
can drive up to four channels of white LEDs while the
current of each channel can be individually set to up
to 30mA current. By ganging four channels together it
can provide a maximum load current of 120mA.
The Serial Digital Interface (SDI) provides the
capability to configure the current for each LED
channel. Some other key features, such as Up
Spread Spectrum Control, different charge-pump
switching frequencies (0.6MHz/1.2MHz/1.8MHz), and
PWM dimming control, can also be programmed
through the interface.
The AP3154A has a built-in soft-start circuit to
minimize the inrush current during power-up and
mode switching. Various
short-circuit, over-voltage, under-voltage and thermal
shutdown are all integrated to ensure system
reliability. The quiescent current of AP3154A during
shutdown is less than 6μA.
EVM Part Number
1 of 4
protections such
AP3154FG-EVM
MARCH
©
Diodes Incorporated
as
2011