ACS1500SE 1.5A(Buck/Boost)

ACS1500SE - compact 1.5A SEPIC (Buck/Boost) Laser Driver 

ACS1500SE

$29

ACS1500SE - compact 1.5A SEPIC (Buck/Boost) Laser Driver 

This driver is designed for powering medium-power laser diodes and LEDs​. Soft start, undervoltage lockout for 1 cell Li-Ion battery, ceramic fast fuse for reverse polarity protection​. Auto buck/boost operation with a stable output current.

Specifications:

• Supply voltage ........................ 2.9...12V

• Output current ........................ 0...1500mA*

• Load forward voltage.............. 1...9V 

• Power ON rise time ................ 5ms

• Board overheat protection .... 140ºC

• Undervoltage lockout ............ 2.9V

• Max dimensions ..................... 30x22x2.5mm

• Main dimensions .................... 10x17.3x2.5mm

​* - In boost mode, the output current is calculated by the simplified formula: Iout = 2 / Vf * Vin. For example, the forward voltage (Vf) of load is 5V, the input voltage (Vin) is 3.3V - this means the driver is in boost mode so the max output current in this case is 2 / 5 *3.3  = 1.3A

Recommendations for soldering and heatsinking:

The customer must have soldering skills because the pads has small size and careless soldering can damage the driver​. Use only neutral soldering flux and low-temperature solder in order to avoid overheating of the PCB. Observe the rules of antistatic protection, the driver is ESD sensitive.

The following picture shows how to install the driver on the heat sink

1. Solder the wires

2. Attach small strips of insulating tape to the pads

3.Spread some thermal adhesive on the back of the driver

4.Press the driver to the heat sink

Typical connection example

5ms soft-start capture

What's included in the package:

• Tested and 100mA preconfigured driver board

• The drivers are delivered fully tested and preconfigured for 100mA output