AF1860
Description
AF1860 is the monolithic IC designed for a step-down DC/DC converter capable of driving 1.5A load without an additional transistor. The input voltage range is up to 60V. Its feedback voltage, VFB, is 200m V. The AF1860 operates at a switching frequency of 52k Hz. The external shutdown function is controlled by a logic level on the ON/OFF pin and then the circuit es into the standby mode with ISTBY ~ 50μA (typ.). The ON/OFF pin may be used for the analog dimming. As the voltage on the ON/OFF pin is increased from 0.07V to 0.67V, the voltage on the FB pin falls from 200m V to 0V.
The self-protection features include a cycle-by-cycle current limit and a thermal protection.
The AF1860 is available in standard SOP-8EP package.
Features
- VIN Max = 60V
- VFB = 200m V
- Frequency 52k Hz
- ILED Max 1.5A ( SOP-8EP )
- On/Off input may be used for the Analog Dimming
- Thermal protection
- Cycle-by-cycle current limit
Application
- DC-DC or AC-DC LED driver applications
- Back lighting...
