The SGM2543B is a power multiplexer which enables seamless switchover between two power supplies with wide operating range. The device can provide 4.5A continuous current and integrate a full suite protection functions including current limit, high precision over-voltage protection, inrush current control, input settling time, reverse current protection and thermal shutdown, making the device well suited for power MUX applications.
The manual and automatic switchover modes are flexible to use in different application scenarios. The device built in 60μs (TYP) switchover time and supports 15μs (TYP) fastest switchover with CP2 logic high which minimize voltage drop during switchover. A channel state indication pin ST can indicate input power supply.
The SGM2543B is available in a Green TQFN-2×2.5- 12L package.
- Wide Operating Range: 2.8V to 22V
- Absolute Maximum Input Voltage of 24V
- Low On-Resistance: 55mΩ (TYP)
- Fastest Switchover (tFSW): 15μs (TYP)
- Current Limit (ILIM): 1A to 5A
- Programmable Over-Voltage Supervisor (OVx): Accuracy < ±5%
- Programmable Priority Supervisor (PR1, CP2): Accuracy < ±5%
- Programmable Input Settling Time and Output Soft-Start Time (SS)
- Channel Status Indication (ST)
- Low IQ:
- 260μA (TYP) from Enabled Input
- 6μA (TYP) from Disabled Input
- Thermal Shutdown
Input Source Selection
Tracking and Telematics
Backup and Standby Power
Multiple Battery Management
EPOS and Barcode Scanners
Building Automation and Surveillance
