Preliminary Datasheet
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Boost Type LED Driver with 4-Channel Current Source |
AP3064 |
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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, VOUT 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
•VOUT Short/Schottky Diode Open Protection
Applications
•LCD Monitor
•LCD Display Module
•LCD TV
SOIC-16 |
PSOP-16 |
DIP-16 |
QFN-4×4-16 |
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Figure 1. Package Types of AP3064
Jul. 2012 Rev. 1. 5 |
BCD Semiconductor Manufacturing Limited |
1
Preliminary Datasheet
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Boost Type LED Driver with 4-Channel Current Source |
AP3064 |
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Pin Configuration |
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M Package |
MP Package |
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(SOIC-16) |
(PSOP-16) |
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CH4 |
1 |
16 |
CH3 |
ISET |
2 |
15 |
GND |
OVP |
3 |
14 |
CH2 |
RT |
4 |
13 |
CH1 |
EN |
5 |
12 |
DIM |
CS |
6 |
11 |
COMP |
OUT |
7 |
10 |
STATUS |
VCC |
8 |
9 |
VIN |
P Package
(DIP-16)
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CH3 |
CH4 |
1 |
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16 |
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OVP |
2 |
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15 |
GND |
ISET |
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CH2 |
3 |
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RT |
4 |
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CH1 |
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EN |
5 |
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12 |
DIM |
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COMP |
CS |
6 |
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11 |
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OUT |
7 |
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10 |
STATUS |
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VCC |
8 |
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9 |
VIN |
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1 |
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16 |
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2 |
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15 |
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3 |
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14 |
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4 |
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13 |
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5 |
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12 |
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6 |
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11 |
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7 |
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10 |
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8 |
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9 |
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FN Package |
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(QFN-4×4-16) |
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Pin 1 Mark |
CH2 |
CH 1 |
DIM |
COMP |
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16 |
15 |
14 |
13 |
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GND |
1 |
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12 |
STATUS |
CH3 |
2 |
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E P |
11 |
VIN |
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CH4 |
3 |
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10 |
VCC |
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OVP |
4 |
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9 |
OUT |
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5 |
6 |
7 |
8 |
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ISET |
RT |
EN |
CS |
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Figure 2. Pin Configuration of AP3064 (Top View)
Jul. 2012 Rev. 1. 5 |
BCD Semiconductor Manufacturing Limited |
2
Preliminary Datasheet
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Boost Type LED Driver with 4-Channel Current Source |
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AP3064 |
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Pin Description |
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Pin Number |
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Pin |
Function |
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SOIC-16 |
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DIP-16 |
QFN- |
Name |
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/PSOP-16 |
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4×4-16 |
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1 |
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1 |
3 |
CH4 |
LED current sink |
4. |
Leave |
the |
pin |
open |
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directly if not used |
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LED current setting pin. The corresponding |
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2 |
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3 |
5 |
ISET |
maximum current of all 4 strings is set through |
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connecting a resistor from this pin to GND |
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Over voltage protection pin. When the OVP |
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pin voltage exceeds 2.0V, the OVP is triggered |
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3 |
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2 |
4 |
OVP |
and the power switch is turned off. When the |
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OVP pin voltage drops below hysteresis |
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voltage, the OVP is released and the power |
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switch will resume normal operation |
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4 |
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4 |
6 |
RT |
Frequency control pin |
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ON/OFF control pin. Forcing this pin above |
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EN |
2.4V enables the IC while below 0.5V shuts |
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5 |
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5 |
7 |
down the IC. When the IC is in shutdown |
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mode, all functions are disabled to decrease |
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the supply current below 3µA |
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6 |
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6 |
8 |
CS |
Power switch current sense input |
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Boost converter power switch gate output. |
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7 |
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9 |
OUT |
This pin output high voltage (5V/VIN-0.5V) to |
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drive the external N-MOSFET |
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5V linear regulator output pin. This pin should |
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8 |
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10 |
VCC |
be bypassed to GND (recommend to connect |
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with GND pin) with a ceramic capacitor |
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9 |
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11 |
VIN |
Supply input pin. A capacitor (typical 10µF) |
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should be connected between the VIN and |
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GND to keep the DC input voltage constant |
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10 |
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10 |
12 |
STATUS |
LED operation status output |
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11 |
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11 |
13 |
COMP |
Soft-start and control loop compensation |
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PWM dimming control pin. |
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12 |
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12 |
14 |
DIM |
Adding a PWM signal to this pin to control |
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LED dimming. If not used, connect it to the |
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high level |
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13 |
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13 |
15 |
CH1 |
LED current sink |
1. |
Leave |
the |
pin |
open |
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directly if not used |
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14 |
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14 |
16 |
CH2 |
LED current sink |
2. |
Leave |
the |
pin |
open |
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directly if not used |
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15 |
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15 |
1 |
GND |
Ground |
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16 |
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16 |
2 |
CH3 |
LED current sink |
3. |
Leave |
the |
pin |
open |
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directly if not used |
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Jul. 2012 Rev. 1. 5 |
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BCD Semiconductor Manufacturing Limited |
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3 |
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Preliminary Datasheet
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Boost Type LED Driver with 4-Channel Current Source |
AP3064 |
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Functional Block Diagram
A(B){C}
A for SOIC-16 and PSOP-16
B for QFN-4×4-16
C for DIP-16
Figure 3. Function Block Diagram of AP3064
Jul. 2012 Rev. 1. 5 |
BCD Semiconductor Manufacturing Limited |
4
Preliminary Datasheet
|
Boost Type LED Driver with 4-Channel Current Source |
AP3064 |
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Ordering Information
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AP3064 |
- |
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Circuit Type |
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G1: Green |
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Package |
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Blank: Tube |
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M: SOIC-16 |
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TR: Tape & Reel |
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MP: PSOP-16 |
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P: DIP-16 |
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FN: QFN-4×4-16 |
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Package |
Temperature |
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Part Number |
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Marking ID |
Packing Type |
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Range |
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SOIC-16 |
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AP3064M-G1 |
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AP3064M-G1 |
Tube |
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AP3064MTR-G1 |
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AP3064M-G1 |
Tape & Reel |
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PSOP-16 |
-40 to 85°C |
AP3064MP-G1 |
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AP3064MP-G1 |
Tube |
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AP3064MPTR-G1 |
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AP3064MP-G1 |
Tape & Reel |
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DIP-16 |
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AP3064P-G1 |
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AP3064P-G1 |
Tube |
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QFN-4×4-16 |
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AP3064FNTR-G1 |
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BJA |
Tape & Reel |
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BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green.
Jul. 2012 Rev. 1. 5 |
BCD Semiconductor Manufacturing Limited |
5
Preliminary Datasheet
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Boost Type LED Driver with 4-Channel Current Source |
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AP3064 |
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Absolute Maximum Ratings (Note 1) |
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Parameter |
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Symbol |
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Value |
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Unit |
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Input Voltage |
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VIN |
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-0.3 to 42 |
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V |
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CH1 to CH4 Voltage |
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VCH |
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-0.3 to 65 |
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V |
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EN Pin Voltage |
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VEN |
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-0.3 to 7 |
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V |
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VCC Pin Voltage |
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VCC |
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-0.3 to 7 |
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V |
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CS Pin Voltage |
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VCS |
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-0.3 to 7 |
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V |
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COMP Pin Voltage |
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VCOMP |
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-0.3 to 7 |
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ISET Pin Voltage |
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VISET |
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-0.3 to 7 |
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V |
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OUT Pin Voltage |
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VOUT |
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-0.3 to 7 |
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V |
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OVP Pin Voltage |
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VOVP |
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-0.3 to 7 |
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V |
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RT Pin Voltage |
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VRT |
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-0.3 to 7 |
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V |
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STATUS Pin Voltage |
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VSTATUS |
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-0.3 to 7 |
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V |
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DIM Pin Voltage |
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VDIM |
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-0.3 to 7 |
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V |
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GND Pin Voltage |
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VGND |
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-0.3 to 0.3 |
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V |
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SOIC-16 |
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100 |
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Thermal Resistance (Junction |
to |
θJA |
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PSOP-16 |
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50 |
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ºC/W |
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Ambient, Free Air, No Heatsink) |
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DIP-16 |
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85 |
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QFN-4×4-16 |
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55 |
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Operating Junction Temperature |
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TJ |
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150 |
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ºC |
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Storage Temperature |
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TSTG |
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-65 to 150 |
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ºC |
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Lead Temperature |
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TLEAD |
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260 |
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ºC |
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(Soldering, 10sec) |
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ESD (Machine Model) |
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200 |
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ESD (Human Body Model) |
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2000 |
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Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Note 2: Negative CS 100ns Transient maximum rating voltage reach to -0.4V.
Recommended Operating Conditions
Parameter |
Symbol |
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Min |
Max |
Unit |
Input Voltage |
VIN |
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4.5 |
33 |
V |
Operating Frequency |
fO |
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0.1 |
1 |
MHz |
LED Channel Voltage |
VCHX |
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60 |
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LED Channel Current |
ICHX |
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20 |
180 |
mA |
PWM Dimming Frequency |
fPWM |
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0.1 |
20 |
kHz |
Operating Ambient Temperature |
TA |
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-40 |
85 |
ºC |
Range |
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Jul. 2012 Rev. 1. 5 |
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BCD Semiconductor Manufacturing Limited |
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