AP3064 FOUR-CHANNEL CURRENT SOURCE BOOST LED DRIVER Description Features The AP3064 is a high efficiency boost controller with 4-string current Input Voltage Range: 4.5V to 33V sources for driving WLED backlight. It operates over a wide input Drives up to 4 Strings in Parallel, 220mA per String voltage range from 4.5V to 33V. Programmable WLED Current from 20mA to 220mA Adjustable Operating Frequency: 100kHz to 1MHz The current of 4 strings are simply programmed from 20mA to 220mA String-to-string Current Matching Accuracy: 1.5% with an external resistor. The current matching between each string is Built-in OCP, OTP, UVLO 1.5% (Typ). Its operating frequency can be adjusted from 0.1MHz to External PWM Dimming 1MHz. Open/Short LED Protection Programmable Soft-start The AP3064 features cycle-by-cycle current limit, soft-start, under Programmable OVP voltage lockout (UVLO) protection, programmable OVP, over temperature protection (OTP), open/short LED protection, V Schottky Diode/Inductor Short-circuit Protection OUT V Short/Schottky Diode Open Protection short/Schottky diode open protection and Schottky Diode short-circuit OUT protection. Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) The AP3064 is available in SOIC-16, PSOP-16, DIP-16 and QFN- 44-16 packages. Applications LCD Monitor LCD Display Module LCD TV Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See --- AP3064 Typical Applications Circuit 600 W 100MHz V OUT VIN L 47mH FB R D1 C3 C4 OV1 C1 Q1 22 mF 22mF 22mF VIN OUT 1M R 2 W 13 R4 0 W CS C5 NC R 0 W 3 C R R R OV2 1 2 13X4 NC C 820pF 2 0.3W 0.3 W 36k ON OFF EN R6 10k R 5 OVP 300k RT CH1 R T COMP 120k R15 1k VCC CH4 R14 CVCC C7 0.22 mF 2.2 mF 100k ISET STATUS STATUS R ISET R8 10k 10k ON OFF DIM GND R7 300k Pin Description Pin Number Pin Name Function SOIC-16 QFN- DIP-16 /PSOP-16 44-16 1 1 3 CH4 LED current sink 4. Leave the pin open directly if not used LED current setting pin. The corresponding maximum current of all 4 strings 2 3 5 ISET is set through connecting a resistor from this pin to GND Over voltage protection pin. When the OVP pin voltage exceeds 2.0V, the OVP is triggered and the power switch is turned off. When the OVP pin 3 2 4 OVP voltage drops below hysteresis voltage, the OVP is released and the power switch will resume normal operation 4 4 6 RT Frequency control pin ON/OFF control pin. Forcing this pin above 2.4V enables the IC while below 5 5 7 EN 0.5V shuts down the IC. When the IC is in shutdown mode, all functions are disabled to decrease the supply current below 3A 6 6 8 CS Power switch current sense input Boost converter power switch gate output. This pin output high voltage 7 7 9 OUT (5V/V -0.5V) to drive the external N-MOSFET IN 5V linear regulator output pin. This pin should be bypassed to GND 8 8 10 VCC (recommend to connect with GND pin) with a ceramic capacitor Supply input pin. A capacitor (typical 10F) should be connected between 9 9 11 VIN the V and GND to keep the DC input voltage constant IN 10 10 12 STATUS LED operation status output 11 11 13 COMP Soft-start and control loop compensation PWM dimming control pin. 12 12 14 DIM Adding a PWM signal to this pin to control LED dimming. If not used, connect it to the high level 2 of 20 AP3064 September 2015 Diodes Incorporated www.diodes.com Document number: DS37485 Rev. 2 - 2 NEW PRODUCT AP3064