TPS62827 2.4 V to 5.5 V Input, 4 A Step-Down Conve

By Texas Instruments 58

TPS62827 2.4 V to 5.5 V Input, 4 A Step-Down Conve

Texas Instruments' TPS62827 is an easy-to-use synchronous step-down DC/DC converter with an ultra-low quiescent current of 4 µA. The converter is based on the DCS control topology providing a fast transient response. The internal reference allows regulation of the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of -40°C to +125°C. The device is pin-to-pin and BOM-to-BOM compatible. The entire solution requires a small 470 nH inductor, a single 4.7 µF input capacitor, and two 10 µF or single 22 µF output capacitors.

The TPS62827 includes an automatically entered power save mode to maintain high efficiency down to ultra-light loads for extending the system battery run-time. The device features a power good signal and an internal soft-start circuit. It can operate in 100% mode. For fault protection, it incorporates a hiccup short circuit protection and thermal shutdown. The device is available in a 6-pin 1.5 mm x 1.5 mm QFN package, offering an ultra-high power density solution.

Features
  • DCS control topology
  • 1% feedback or output voltage accuracy (full temperature range)
  • Efficiency: up to 97%
  • Internal power MOSFETs: 26 mΩ and 25 mΩ
  • Input voltage range: 2.4 V to 5.5 V
  • Operating quiescent current: 4 µA
  • Switching frequency: 2.2 MHz
  • Adjustable output voltage: 0.6 V to 4 V
  • Power save mode for light load efficiency
  • 100% duty cycle for the lowest dropout
  • Active output discharge
  • Power good output
  • Thermal shutdown protection
  • Hiccup short-circuit protection
Applications
  • Solid-state drives
  • Portable electronics
  • Video surveillance
  • Industrial PCs
  • Multi-function printers
  • Generic points of load

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