Product parameters:

1. Working voltage: DC 2.8-6V (for 3V 3.3V 3.7V 4.5V 5V 6V LED driver)

2. Output current: 30-1500MA

3. Maximum output power: 9W

Can drive 1-16 2.8-6V leds

(Maximum current does not exceed 1.5A)

4. Current regulation: 1 through adjustable resistance; 2 Control chip temperature regulation through PWM signal

Over LED current protection

Operating temperature range

Application 1:

Wiring in accordance with the following figure, use a suitable screwdriver gently and slowly rotate the adjustable resistance.

Application 2:

Adjust the adjustable resistance to 0 ohms (or maximize the current according to Application 1) and then use the MCU output PWM signal to control the LED output current

the frequency of the PWM signal should be less than 2KHz

Product Description:

LD06AJSA/B is a current regulation integrated circuit operating from an input voltage of 2.8V to 6V, the constant

output current can be set up to 1.5A with an external resistor.  The LD06AJSA/B consists of high precision reference

voltage, amplifier, current mirror, etc.  The on-chip power transistor and current sense block greatly reduce the

external component count, which makes the LD06AJSA/B ideal for LED driver.

When the CE pin is high, the input voltage is greater than 2.8V, and is larger than the LED forward voltage plus

the required voltage drop, LD06AJSA/B functions normally to deliver constant current from the LED pin.

The LD06AJSA/B adopts the temperature regulation instead of temperature protection function, the temperature

regulation can make the LED being turned on continuously in case of high ambient temperature or high voltage

drop.  When the LD06AJSA/B junction temperature reaches about 135 ° C, the internal temperature regulation block

reduces the LED current so that the junction temperature will not rise any more.  This feature allows the users to

maximize the use of the power handling capability of the chip, do not worry about the chip overheating and

damage to the chip or external components.

The LD06AJSA/B also has the chip enable function, which can shutdown the whole chip to limit the current

consumption within 1uA.

The LD06AJSA/B also adopts the over current protection block.  When LED current approaches 1.9A(Typical), the

over current protection block begins to function to prevent the LED current from increasing further.