The TPS54362-Q1 device is a step-down switch-mode power supply with a low-power mode and a programmable 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. Pulse-skip mode operation under no load reduces the supply current to 65 µA. Using the enable pin reduces the supply shutdown current to 1 µA.
●An open-drain reset signal indicates when the nominal output drops below the threshold set by an external resistor-divider network. A soft-start capacitor controls the output voltage start-up ramp. The device activates an internal undervoltage shutdown when the input supply ramps down to 2.6 V.
●Frequency foldback operation protects the device during an overload conditions on the output. The device also has thermal shutdown protection due to excessive power dissipation.
●The B-revision has an improved leakage current parameter, and improved discharged function while in disable mode.
● Qualified for Automotive Applications
● AEC-Q100 Qualified With the Following Results:
● Device Temperature Grade 1: –40°C to 125°C
●Ambient Operating Temperature
● Device HBM ESD Classification Level 2
● Device CDM ESD Classification Level C5
● 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 3 A (max.)
● 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 Lockout, 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
● Thermal Shutdown During Excessive Power Dissipation
● Switch Current-Limit Protection
● Short-Circuit and Overcurrent Protection of FET
● Junction Temperature Range: –40°C to 150°C
● 20-Pin HTSSOP PowerPAD Package
● Qualified for Automotive Applications