NJM3545

NJM3545 UNIVERSAL SINK DRIVER s GENERAL DESCRIPTION NJM3545 is a bipolar universal high-current highly protected low side driver with transparent input and 2000mA continuous -current sink capability. A high-level input activates the output. The driver is equipped with extensive electrical protection; such as over current protection and thermal protection, which makes the device virtually indestructible. Furthermore it can detect open circuit and short circuit to ground. A special feature is the Error indicating output function pin which signals to the host system if the protection or the load check functions is activated. The NJM3545 and NJM3548 are complementary drivers and have similar data. s FEATURES 2000mA continuous-output current Short circuit to VCC protection Error signal to host system Open circuit detection Short circuit to ground detection Thermal protection Built-in protection diodes Package TO-220 (5-pin) s PACKAGE OUTLINE NJM3545TA2 s BLOCK DIAGRAM Supply NJM3545 To logic Voltage reference Output Input Thermal protection Q S R Short-circuit to Vcc protection Short-circuit to GND detection Open circuit detection Error GND Figure 1. Block Diagram NJM3545 s PIN CONFIGURATION NJM3545TA2 5 4 3 2 1 Input Error GND Output Supply Figure 2. Pin description s PIN DESCRIPTION TO-220 Symbol Description 1 2 3 4 5 Supply Supply voltage. Nominally 5 V to 40 V. Output GND Error Input Output pin. Current flows from supply through the load into t...