General Description
The AS1720A is a low side current source providing an optimized DC Operation for power saving and ultra low electromagnetic radiation.
The AS1720B is a low side switch providing a PWM output, which frequency is defined by an internal RC oscillator. The adjustable PWM allows a fine control of the power delivered to the load.

Key Features
■ Supply Range: +5V to +50V
■ Internal VDDA: 3.3V
■ Supply Current: 1 mA
■ Internal osc frequency: 30kHz
■ Fix delay: 136ms
■ Adjustable duty cycle: 20% – 90% (AS1720B only)
■ Adjustable energizing current: 10mA – 100mA
■ Adjustable hold current: 30% - 70% of energizing current
■ Current Limitation
■ Thermal shutdown: 150ºC
■ 8-pin MLPD (2x2mm) Package
■ On request SOIC 8 Package (reduced temperature range -40°C to +85°C)

Applications
    The AS1720 is ideal for fluid and gas flow systems, industrial control, electrical heaters, motor speed control.