Product Summary

The TPS54350PWPG4 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features of the TPS54350PWPG4 include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350PWPG4 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions.

Parametrics

TPS54350PWPG4 absolute maximum ratings: (1)Input voltage range, VI: VIN: -0.3 V to 21.5 V, VSENSE: -0.3 V to 8.0 V, UVLO: -0.3 V to 8.0 V; (2)Output voltage range, VO: LSG: -0.3 to 8.5 V, RT: -0.3 to 4.0 V, SYNC: -0.3 to 4.0 V, PWRGD: -0.3 to 6.0 V, COMP: -0.3 to 4.0 V; (3)Source current, IO: PH: -1.5 V to 22 V, PH: Internally Limited (A), LSG (Steady State Current) 10 mA, COMP, VBIAS: 3 mA; (4)Voltage differential: AGND to PGND: ±0.3 V; (5)Operating virtual junction temperature range, TJ: -40℃ to +150℃; (6)Storage temperature, Tstg: -65℃ to +150℃; (7)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃.

Features

TPS54350PWPG4 features: (1)100 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current; (2)Uses External Lowside MOSFET or Diode; (3)Output Voltage Adjustable Down to 0.891 V With 1% Accuracy; (4)Synchronizes to External Clock; (5)180 Out of Phase Synchronization; (6)Wide PWM Frequency-Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz; (7)Internal Slow Start; (8)Load Protected by Peak Current Limit and Thermal Shutdown.

Diagrams

TPS54350PWPG4 simplified schematic diagram

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