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TB62D612FTG

TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic

TB62D612FTG

24-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply Voltage Operation

The TB62D612FTG is a constant-current driver designed for LED and LED

display lighting.

The TB62D612FTG incorporates twenty-four channels of seven-bit PWM

dimming controllers and constant-current drivers. Twenty-four constant-current

drivers are divided into three blocks, each consisting of three drivers, and the

output current of each can be independently adjusted by the relevant external

resistor.

The TB62D612FTG is controlled using the SDA and SCLK input signals, and

capable of high-speed data transfers.

The TB62D612FTG can be set address with ID terminal. (Up to 64 address)

High-speed processing is capable by applying Bi-CMOS process.

The TB62D612FTG operates with a supply voltage of 3.3 V or 5 V.

P-WQFN36-0606-0.50-001

Weight: 0.083 g ( typ.)

1． Features

• Power supply voltages: VCC = 3.3 V/5 V

• Output drive capability and output count: 80 mA (max)× 24 channels

• Constant-current output range: 5 to 40 mA

• Voltage applied to constant-current output terminals: 0.4 V(min) (IOUT = 5 to 40 mA)

• Designed for common-anode LEDs

• The input interface is controlled by the SDA and SCLK signal lines

• Thermal shutdown (TSD)

• Logical Input signal voltage level: 3.3-V and 5-V CMOS interfaces (Schmitt trigger input)

• Maximum output voltage: 28 V

• Incorporating PWM control circuitry: Provides seven-bit PWM control.

• Driver identification: Up to 64 drivers can be controlled individually.

• Operating temperature range: Topr = −40 to 85 °C

• Package: P-WQFN36-0606-0.50-001

• Constant-current accuracy

Output Voltage

Current Accuracy Current Accuracy

Between Channels Between ICs

0.4 V

±3.0%

±6.0%

Output Current

15 mA

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5．Equivalent Circuits for Inputs and Outputs

SDA and SCLK Terminals

TB62D612FTG

RESET Terminals

Vcc Vcc

SDA

SCLK

GND

Constant-Current Output Terminals

PGND

/OUTR0 to /OUTR7

/OUTG0 to /OUTG7

/OUTB0 to /OUTB7

RESET

GND

ID0, ID1, and ID2 Terminals

Vcc

ID0

ID1

ID2

GND

Comparison

↓

4 2012-07-23

01100110

01101000

01101010

01101100

01101110

01110000

01110010

01110100

01110110

01111000

01111010

01111100

01111110

0XXXXXX1

TB62D612FTG

Vcc GND

Vcc

Vcc 1/3Vcc

GND

Vcc 1/3Vcc

1/3Vcc

Vcc 1/3Vcc

2/3Vcc

Vcc 1/3Vcc

Vcc

Vcc 2/3Vcc

GND

Vcc 2/3Vcc

1/3Vcc

Vcc 2/3Vcc

2/3Vcc

Vcc 2/3Vcc

Vcc

Vcc Vcc

GND

Vcc Vcc

1/3Vcc

Vcc Vcc

2/3Vcc

Vcc Vcc

Vcc

All Select

b) Sub-Addresses

Output channel set / All channels set / Special mode set

In output channel set, a channel which defines PWM configuration is selected. In all channels set, PWM is configured for all

channels. Special mode sets this mode according to the description in page 8.

7bit 6bit 5bit 4bit 3bit 2bit 1bit 0bit

Ch set

0 0 0 0 0 010

/OUTR0

0 0 0 0 0 100

/OUTG0

0 0 0 0 0 110

/OUTB0

0 0 0 0 1 000

/OUTR1

0 0 0 0 1 010

/OUTG1

0 0 0 0 1 100

/OUTB1

0 0 0 0 1 110

/OUTR2

0 0 0 1 0 000

/OUTG2

0 0 0 1 0 010

/OUTB2

0 0 0 1 0 100

/OUTR3

0 0 0 1 0 110

/OUTG3

0 0 0 1 1 000

/OUTB3

0 0 0 1 1 010

/OUTR4

0 0 0 1 1 100

/OUTG4

0 0 0 1 1 110

/OUTB4

0 0 1 0 0 000

/OUTR5

0 0 1 0 0 010

/OUTG5

0 0 1 0 0 100

/OUTB5

0 0 1 0 0 110

/OUTR6

0 0 1 0 1 000

/OUTG6

0 0 1 0 1 010

/OUTB6

0 0 1 0 1 100

/OUTR7

0 0 1 0 1 110

/OUTG7

0 0 1 1 0 000

/OUTB7

0 1 0 0 0 0 0 0 All channel select

0 1 1 0 0 0 0 0 Special mode

(Bits of high order and low order must be zero.)

c) Data Bytes (PWM configuration)

Data bytes set PWM diming. (Low order bit must be zero.)

7bit 6bit 5bit 4bit 3bit 2bit

0 0 00 0 0

0 0 00 0 0

0 0 00 0 1

1bit

0

1

0

0bit

0

0

0

1 1 11 1 1 0

1 1 11 1 1 1

Note: Any data other than those specified above must not be programmed.

7

0

0

PWM Dimming (for reference only)

OFF(Default)

1/127

2/127

・・・

126/127

127/127

2012-07-23

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