LV5237JA

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7

OUTSCT Settings

LED Driver Output Pin

OUTSCT pin

LEDR1/ LEDR2

LEDG1/ LEDG2

LEDB1/ LEDB2

LEDR3

LEDG3

LEDB3

L

Constant current output

Built-in current value switching D/A (5 bits)

0.86mA to 31.24mA, RT1=20kΩ (f=1MHz)

Constant current output

Built-in current value switching D/A (5 bits)

0.86mA to 31.24mA, RT1=20kΩ (f=1MHz)

H

Open drain output

Current value is determined by external limiting resistor.

RON=10Ω

Open drain output

Current value is determined by external limiting resistor.

RON=10Ω

M

Constant current output

Built-in current value switching D/A (5 bits)

0.86mA to 31.24mA, RT1=20kΩ (f=1MHz)

Open drain output

Current value is determined by external limiting resistor.

RON=10Ω

Power on RESET Settings

Pin Functions

Pin No.

Pin Name

Pin function

Equivalent Circuit

1

SVCC

Power supply pin

2

TEST1

Test1 pin

This pin must always be connected to GND.

60kΩ

10kΩ

TEST1

3

VREF

Reference output pin(5V)

4

CTLSCT

Serial bus communication setting pin

When set to low: The 3-wire serial bus

signals are set as the input signals.

When set to high: The 2-wire serial bus

signals are set as the input signals.

VREF

2.5V

2.3V

SVCC=5.0V

(3.1V-12.8V)

Release of the power-on reset

(accept data after a fixed period of time)

*Conservation voltage of serial data

*In a low battery, it is output OFF

(I let LED output have OFF when I detect UVLO)

It is impossible of serial data setting.

It is necessary for the reset of the device to let

you cancel a shell power-on reset as VCC=0V

When you transmit data after a release of the power-on reset,

please transmit it after being able to open interval more than 100usec.

It has power-on reset circuit built-in, and, at the time of power activation, the air resister data of the IC is reset.

It prevents malfunction of the LED lighting by letting you reset it.

When voltage rises from state of SVCC=0V, the power-on reset becomes effective.

Please start to reboot it after making SVCC=0V.