U644B Overview
The bipolar integrated circuit, U644B, is used in relaycontrolled automotive flashers where a high level EMC is required. Lamp outage is indicated by frequency doubling during hazard warning as well as direction mode. If the flasher module provides an 4-pin connector the control pin of U644B (Pin 6) can be used to operate the IC in an extremly low-current mode.
U644B Key Features
- 49 mV 4 K1 6 15
- 49 mV 4 K1 6
- Power Connected directly to battery (Kl 30). Pin 3, Relay control output (driver) The relay control output is a high-sid