APL3521 Datasheet | ANPEC

Features - - - - - - - - - - 90mΩ High Side MOSFET 2A Continuous Current Built-in Soft-Start Control Wide Supply Voltage Range: 2.7V to 5.5V Current-Limit and Short-Circuit Protections Under-Voltage Lockout Protection Reverse Current Blocking when Switch Disabled Over-Temperature Protection Logic Level Enable Input APL3521A: Active High APL3521B: Active Low Lead Free and Green Devices Available (Ro HS pliant) General Description The APL3521A/B is a power-distribution switch with some protection functions that can deliver current up to 2A. The device incorporates a 90mΩ N-channel MOSFET power switch that is controlled by an enable logic. The device integrates some protection features , including current-limit protection, short-circuit protection, overtemperature protection, and UVLO. The current-limit and short-circuit protection can protect down-stream devices from catastrophic failure by limiting the output current at current-limit threshold during over-load or short-circuit events. When VOUT drops below VIN-1.5V the devices limit the current to a lower and safe level. The over-temperature protection function shuts down the N-channel MOSFET power switch when the junction temperature rises beyond 140o C and will automatically turns on the power switch when the temperature drops by 20o C. The UVLO function keeps the power switch in off state until there is a valid input voltage present. The device is available in lead free SOT-23-5 packages with enable active-high(EN) and active-low(ENB) versions. Applications - - - - TFT LCD Modules Notebook and Desktop puters USB Ports High-Side Power Protection Switches Simplified Application Circuit Pin Configuration APL3521A/B VIN VIN VOUT VOUT VOUT 1 GND 2 EN 3 SOT-23-5 APL3521A 5 VIN 4 NC EN Control EN/ ENB GND VOUT 1 GND 2 ENB 3 SOT-23-5 APL3521B 5 VIN 4 NC ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant...