Diodes AP3064 User Manual

Boost Type LED Driver with 4-Channel Current Source AP3064

Preliminary Datasheet

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
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 package s.

OUT

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

Short/Schottky Diode Open Protection

OUT

Applications

• LCD Monitor

• LCD Display Module

• LCD TV

SOIC-16 PSOP-16 DIP-16 QFN-4×4-16

Figure 1. Package Types of AP3064

Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

1

Preliminary Datasheet

Boost Type LED Driver with 4-Channel Current Source AP3064

Pin Configuration

M Package MP Package
(SOIC-16) (PSOP-16)

1

CH4

2

ISET

OVP

3

4

RT

5

EN

CS

6

7

OUT

8

VCC VIN

P Package FN Package

(DIP-16) (QFN-4×4-16)

CH4

1

OVP

2

ISET

3

RT

4

EN

5

CS

6

OUT

7

VCC VIN

8

Figure 2. Pin Configuration of AP3064 (Top View)

16

15

14

13

12

11

10

9

CH3

GND

CH2

CH1

DIM

COMP

STATUS

1

2

3

4

5

6

7

89

16

15

14

13

12

11

10

CH3

16

15

GND

CH2

14

CH1

13

DIM

12

COMP

11

10

STATUS

9

Pin 1 Mark

GND

CH3

CH4

OVP

1

2

3

4

CH1

CH2

16 15 14

E P

RT

ISET

DIM

EN

COMP

13

12

STATUS

11

VIN

10

VCC

9

OUT

8765

CS

Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

2

µ

Preliminary Datasheet

Boost Type LED Driver with 4-Channel Current Source AP3064

Pin Description

Pin Number

SOIC-16

/PSOP-16

1 1 3 CH4

2 3 5 ISET

3 2 4 OVP

4 4 6 RT Frequency control pin

5 5 7

6 6 8

7 7 9 OUT

8 8 10 VCC

9 9 11 VIN

10 10 12 STATUS LED operation status output

DIP-16

QFN-

4×4-16

Pin

Name

EN

CS

Function

LED current sink 4. Leave the pin open
directly if not used
LED current setting pin. The corresponding
maximum current of all 4 strings 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 voltage drops below hysteresis
voltage, the OVP is released and the power
switch will resume normal operation

ON/OFF control pin. Forcing this pin above

2.4V enables the IC while below 0.5V shuts
down the IC. When the IC is in shutdown
mode, all functions are disabled to decrease
the supply current below 3µA

Power switch current sense input
Boost converter power switch gate output.

This pin output high voltage (5V/VIN-0.5V) to
drive the external N-MOSFET
5V linear regulator output pin. This pin should
be bypassed to GND (recommend to connect
with GND pin) with a ceramic capacitor

Supply input pin. A capacitor (typical 10
should be connected between the V
GND to keep the DC input voltage constant

and

IN

F)

11 11 13 COMP Soft-start and control loop compensation

PWM dimming control pin.

12 12 14 DIM

13 13 15 CH1

14 14 16 CH2
15 15 1 GND Ground
16 16 2 CH3

Adding a PWM signal to this pin to control
LED dimming. If not used, connect it to the
high level
LED current sink 1. Leave the pin open
directly if not used
LED current sink 2. Leave the pin open
directly if not used

LED current sink 3. Leave the pin open
directly if not used

Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

3

Preliminary Datasheet

Boost Type LED Driver with 4-Channel Current Source AP3064

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

Ordering Information

AP3064 -

G1: Green

Blank: Tube
TR: Tape & Reel

Package

SOIC-16

Circuit Type

Package
M: SOIC-16
MP: PSOP-16
P: DIP-16
FN: QFN-4×4-16

Temperature

Range

Part Number Marking ID Packing Type

AP3064M-G1 AP3064M-G1 Tube
AP3064MTR-G1 AP3064M-G1 Tape & Reel

PSOP-16

DIP-16 AP3064P-G1 AP3064P-G1 Tube

QFN-4×4-16 AP3064FNTR-G1 BJA Tape & Reel

-40 to 85°C

AP3064MP-G1 AP3064MP-G1 Tube
AP3064MPTR-G1 AP3064MP-G1 Tape & Reel

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

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Preliminary Datasheet

Boost Type LED Driver with 4-Channel Current Source AP3064

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Input Voltage
CH1 to CH4 Voltage
EN Pin Voltage
VCC Pin Voltage
CS Pin Voltage
COMP Pin Voltage
ISET Pin Voltage
OUT Pin Voltage
OVP Pin Voltage
RT Pin Voltage
STATUS Pin Voltage
DIM Pin Voltage
GND Pin Voltage

V
V
V
VCC
V

V

COMP

V
V
V

V

V

STATUS

V
V

IN
CH
EN

CS

ISET
OUT
OVP

RT

DIM
GND

SOIC-16 100
Thermal Resistance (Junction to
Ambient, Free Air, No Heatsink)

θ

JA

PSOP-16 50

DIP-16 85

QFN-4×4-16 55
Operating Junction Temperature
Storage Temperature

T

J

T

STG

Lead Temperature

T

(Soldering, 10sec)

LEAD

ESD (Machine Model) 200 V
ESD (Human Body Model) 2000 V

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.

-0.3 to 42 V

-0.3 to 65 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 7 V

-0.3 to 0.3 V

ºC/W

150 ºC

-65 to 150 ºC
260 ºC

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage V

IN

Operating Frequency fO 0.1 1 MHz
LED Channel Voltage V
LED Channel Current I
PWM Dimming Frequency f

Operating Ambient Temperature
Range

Jul. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

60 V

CHX

20 180 mA

CHX

0.1 20 kHz

PWM

-40 85 ºC

T

A

6

4.5 33 V