Product Summary

The L584 is a multifunction injection interface which is designed to drive injector solenoids in electronic fuel injection systems and generally inductive loads for automotive applications. The L584 is controlled by two logic inputs and features switchmode regulation of the load current driving an external darlington and an auxiliary one for the current recirculation. A key feature of the L584 is flexibility. It can be used with a variety of darlingtons to match the requirements of the load and it allows both simple and two level current control.

Parametrics

L584 absolute maximum ratings: (1)DC Supply Voltage (pin 1 open): – 0.2Vmin; +50V Max; (2)Positive Transient Voltage (pin 1 connected to VS, πf fall time constant = 100ms)(5ms ≤ trise ≤ 10ms, Rsource ≥ 0.5Ω): +60VMax; (3)Input Voltage (pins 10, 11): – 0.2Vmin; +7V Max; (4)External Reference Voltage (pin 2): – 0.2Vmin; +7V Max; (5)Sense Voltage (pin 3): – 0.2Vmin; +7V Max; (6)Max D.C. and Transient Voltage: 50V; (7)Reference Current (pin 9): 5mA Max; (8)Storage and Junction Temperature Range: –55 to 150℃.

Features

L584 features: (1)Drives one or two external darlingtons; (2)Dual and single level current control; (3)Switch mode current regulation; (4)Adjustment high level current duration; (5)Wide supply range(4.75-46V); (6)TTL-compatible logic inputs; (7)Thermal protection; (8)Dump protection.

Diagrams

L584 block diagram