TPS54332 Datasheet | Texas Instruments

Features - 3.5-V to 28-V input voltage range - Adjustable output voltage down to 0.8 V - Integrated 80-mΩ high-side MOSFET supports up to 3.5-A continuous output current - High-efficiency at light loads with a pulse-skipping Eco-mode - Fixed 1-MHz switching frequency - Typical 1-μA shutdown quiescent current - Adjustable slow-start limits inrush currents - Programmable UVLO threshold - Overvoltage transient protection - Cycle-by-cycle current limit, frequency foldback and thermal shutdown protection - Available in thermally enhanced, 8-pin SOIC Power PAD™ integrated circuit package - Use TPS62933 for a 30 VIN converter with higher frequency, lower IQ, and improved EMI - Create a custom design using the TPS54332 with the WEBENCH® Power Designer 2 Applications - Consumer applications such as set-top boxes, CPE equipment, LCD displays, peripherals, and battery chargers - Industrial and car audio power supplies - 5-V, 12-V and 24-V distributed power systems Ren1 Ren2 BOOT PH SS P C1 C2 R3 VSENSE GND VIN CI CBOOT LO D1 VOUT RO1 RO2 Simplified Schematic 3 Description The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates a low-RDS(on) highside MOSFET. To increase efficiency at light loads, a pulse-skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply current allows the device to be used in batterypowered applications. Current mode control with internal slope pensation simplifies the external pensation calculations and reduces ponent count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during start-up and transient conditions. A cycle-bycycle current limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54332 is available in an 8-pin SOIC Power PAD...