Diodes AP3064 - Manual

Preliminary Datasheet
Boost Type LED Driver with 4-Channel Current Source AP3064
Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
1
General Description
The AP3064 is a high efficiency boost controller with
4-string current sources for driving WLED backlight.
It operates over a wide input voltage range from 4.5V
to 33V.
The current of 4 strings are simply programmed from
20mA to 220mA with an external resistor. The
current matching between each string is 1.5% (Typ).
Its operating frequency can be adjusted from 0.1MHz
to 1MHz.
The AP3064 features cycle-by-cycle current limit,
soft-start, under voltage lockout (UVLO) protection,
programmable OVP, over temperature protection
(OTP), open/short LED protection, V
OUT
short/Schottky diode open protection and Schottky
Diode short-circuit protection.
The AP3064 is available in SOIC-16, PSOP-16,
DIP-16 and QFN-4×4-16 packages.
Features
• Input Voltage Range: 4.5V to 33V
• Drives up to 4 Strings in Parallel, 220mA per
String
• Programmable WLED Current from 20mA to
220mA
• Adjustable Operating Frequency: 100kHz to
1MHz
• String-to-string Current Matching Accuracy:
1.5%
• Built-in OCP, OTP, UVLO
• External PWM Dimming
• Open/Short LED Protection
• Programmable Soft-start
• Programmable OVP
• Schottky Diode/Inductor Short-circuit Protection
• V
OUT
Short/Schottky Diode Open Protection
Applications
• LCD Monitor
• LCD Display Module
• LCD TV
Figure 1. Package Types of AP3064
SOIC-16 PSOP-16 DIP-16 QFN-4Ч4-16