The TPS54362 is a step down switch mode power supply with voltage supervisor. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by cycle current limit. A pulse skip mode operation under no load reduces the supply current to 65 μA. Using the enable pin, the supply shutdown current is reduced to 1 μA.
An open drain reset signal indicates when the nominal output drops below the threshold set by an external resistor divider network. The output voltage start up ramp is controlled by a soft start capacitor. There is an internal undervoltage shut down which is activated when the input supply ramps down to 2.6 V.
Feature
- Withstands Transients up to 60 V With an Operating Range of 3.6 V to 48 V
- Asynchronous Switch Mode Regulator With External Components (L and C), Load Current up to 1 A (Maximum)
- 0.8 V ±1.5% Voltage Reference
- 200-kHz to 2.2-MHz Switching Frequency
- High Voltage Tolerant Enable Input for ON/OFF State
- Soft Start on Enable Cycle
- Slew Rate Control on Internal Power Switch
- External Clock Input for Synchronization
- Pulse Skip Mode (PFM) During Light Output Loads With Quiescent Current = 65 μA Typical (LPM Operation)
- External Compensation for Wide Bandwidth Error Amplifier
- Internal Undervoltage Lock Out UVLO
- Programmable Reset Power on Delay
- Reset Function Filter Time for Fast Negative Transients
- Programmable Overvoltage Output Monitoring
- Programmable Undervoltage Output Monitoring, Issuance of Reset if Output Falls Below Threshold
- Switch Current Limit Protection
- Short Circuit and Overcurrent Protection of FET
- Package: 20-pin HTSSOP PowerPAD
The TPS54362 is a step down switch mode power supply with voltage supervisor. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by cycle current limit. A pulse skip mode operation under no load reduces the supply current to 65 μA. Using the enable pin, the supply shutdown current is reduced to 1 μA.
An open drain reset signal indicates when the nominal output drops below the threshold set by an external resistor divider network. The output voltage start up ramp is controlled by a soft start capacitor. There is an internal undervoltage shut down which is activated when the input supply ramps down to 2.6 V.
