ST2054 Datasheet | STMicroelectronics

DESCRIPTION The ST2054 power distribution switches is intended for application where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80mΩ N-channel MOSFET high-side power switches for power-distribution systems that require multiple powers switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external Table 1: Order Codes Type ST2054BD ST2054BDR Temperature Range -40 to 85 °C -40 to 85 °C Package ponents and allows operation from supplies as low as 2.7 V. When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. A 10ms deglitching circuit provides fault-blanking feature , preventing the OC_N pin to be asserted during hot-insertion or short spikes of overcurrent conditions. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.9 A. ments 50parts per tube / 40tube per box 2500 parts per reel SO-16 (Tube) SO-16 (Tape & Reel) July 2005 Rev. 3 1/9 Figure 1: Pin Configuration Table 2: Pin Description Pln N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol GNDA IN1 EN1 EN2 GNDB IN2 EN3 EN4 OC4 OUT4 OUT3 OC3 OC2 OUT2 OUT1 OC1 Name And Function Ground Input Voltage Enable Input. Logic High Turns On Power Switch IN-OUT1 Enable Input. Logic...