Power chips LM5176PWPR

The Texas Instruments LM5176PWPR is a high-performance, wide-input-voltage synchronous four-switch buck-boost controller designed for single-inductor buck-boost DC-DC conversion. It seamlessly regulates output voltage when input is higher than, lower than, or equal to the output, making it ideal for applications with wide-varying input sources such as batteries, automotive rails, or industrial supplies.

Key Specifications:

• Brand: Texas Instruments (TI)
• Part Number: LM5176PWPR
• Topology: Synchronous four-switch buck-boost
• Input Voltage Range: 4.2 V to 55 V (2.5 V min. with external bias; max 60 V)
• Output Voltage Range: 0.8 V to 55 V (adjustable)
• Control Mode: Peak current-mode
• Switching Frequency: Adjustable (typically up to 600 kHz typ.)
• Gate Drivers: Integrated 2 A peak N-channel MOSFET drivers (external FETs required)
• Protections: Cycle-by-cycle current limiting, optional hiccup mode, output short-circuit protection, programmable UVLO, soft-start, overvoltage protection, power-good indicator, optional average input/output current limiting
• Additional Features: Optional frequency synchronization and dithering, high-efficiency conversion across entire VIN range
• Package: HTSSOP-28 with Exposed Pad (PowerPAD™)
• Packaging: Tape & Reel
• Operating Junction Temperature: –40 °C to +125 °C (TJ)

Typical Applications:

• Industrial PC and embedded power supplies
• USB Power Delivery (PD) and Type-C charging systems
• Battery-powered equipment and backup power
• Automotive start-stop systems and infotainment
• LED drivers and high-power lighting
• Telecom, networking, and wide-VIN point-of-load regulation

The LM5176 delivers seamless, high-efficiency buck-boost operation, robust protection features, and design flexibility (including WEBENCH® support) in a thermally enhanced HTSSOP-28 package — a premium choice for demanding applications requiring stable output across input voltages from below to well above the target output.