A2536EM

2526 AND 2536 A2526EM GATE GATE CONTROL CONTROL USB DUAL POWER CONTROL SWITCHES The A2526EL/M and A2536EL/M are integrated high-side dual power switches, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. Few external components are necessary to satisfy USB requirements. The A2526EL/EM ENABLE inputs are active high; the A2536EL/EM are active low. All devices are ideally suited for USB applications. Each switch channel supplies up to 500 mA as required by USB peripheral devices. In addition, the switch’s low on-resistance permits achieving the USB voltage-drop requirements. Fault current is limited to typically 750 mA, satisfying the UL 25 VA safety requirements, and a flag output is available to indicate a fault condition to the local USB controller. Momentary voltage drops that may occur on the upstream port when the switch is enabled in bus-powered applications is eliminated by a “soft start” feature. Additional features include thermal shutdown to prevent catastrophic switch failure from high-current loads, undervoltage lockout to ensure that the device remains OFF unless there is a valid input voltage present, and 3.3 V and 5 V logic-compatible enable inputs. These switches are provided in 8-pin mini-DIP (suffix ‘M’) and 8-lead SOIC (suffix ‘L’) packages. Data Sheet 27447.2* ENA FLGA FLGB ENB 1 2 3 4 8 7 6 5 OUTA IN GND OUTB Dwg. PP-070-2 Note that the A2526EM (DIP) and the A2526EL (SOIC) are electrically identical and share a common terminal number assignment. ABSOLUTE MAXIMUM RATINGS Supply Voltage, VIN ..................... 6.0 V Output Voltage, VOUT .................. 6.0 V Output Current, IOUT ................. Internally Limited ENABLE Voltage Range, VEN ......................... –0.3 V to 10 V Fault Flag Voltage, VFLG .............. 8.0 V Fault Flag Current, IFLG ............. 50 mA Package Power Dissipation, PD ................................. See Graph Operating Temperature Range, TA .......................... -40°C to +85°C Junction Temperature, TJ ....... +150°C* Storage Temperature Range, TS ........................... -65°C to 150°C * Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided. T C A T N O C Features I I I I I I I I I I I I I I I I I Y R O T C A F 2.7 V to 5.8 V Input Up to 500 mA Continuous Load Current per Port 140 mΩ Maximum ON-Resistance 1.25 A Maximum Short-Circuit Current Limit Individual Open-Drain Fault Flag Outputs 125 µA Typical ON-State Supply Current