The ADM1072 is a logic controlled, dual P-channel switch with low on resistance and a built-in current limiter, capable of sourcing up to 1A from supply voltages between 2.7V and 5.5V. In addition to logic inputs that switch each channel on and off, the device has a standby input that switches the output current limit, making it ideal for use with USB peripherals.
The ADM1072 is a dual, logic-controlled P-channel switch designed to source up to 1A from supply voltages between 2.7V and 5.5V. It features low on-resistance (135mΩ) and includes built-in current limiting with selectable limits for Full Power Mode (500mA) and Standby Mode (100mA), compliant with USB 2.0 specifications.
The device incorporates protection mechanisms including short-circuit protection, thermal shutdown at +150°C, and undervoltage lockout between 2.0V and 2.6V. It is available in a small 16-pin QSOP package and is intended for use with desktop computers, notebook computers, palmtop computers, and hand-held instruments.
| Load Current (Full Power Mode) | 500mA |
|---|---|
| Load Current (Standby Mode) | 100mA |
| Operating Voltage Range | +2.7V to +5.5V |
| On Resistance | 135mΩ |
| Quiescent Current (Typical) | 50µA |
| Shutdown Current (Typical) | 10nA |
| Package Type | 16-Pin QSOP |
| Operating Temperature Range (Industrial) | -40°C to +85°C |
The device limits output current to 100mA in Standby Mode, as outlined by the USB2.0 Specification.
The thermal shutdown circuit activates, turning off both channels until the temperature falls below +140°C.
Undervoltage lockout occurs at between 2.0V and 2.6V on the STBY_IN supply.