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Texas Instruments TPS563300 3A Synchronous Buck Converter

Texas Instruments TPS563300 3A Synchronous Buck Converter is an easy-to-use, high-efficiency buck converter with a 3.8V to 28V wide input voltage. The device supports a 0.8V to 22V output voltage and up to 3A continuous output current.

The device employs a fixed-frequency peak current control mode for a good line, load regulation, and fast transient response. The internal loop compensation is optimized to eliminate external compensation components over a wide range of operation frequency and output voltage. Pulse frequency modulation (PFM) mode maximizes the light load efficiency. A low quiescent current feature benefits extended battery lifetime in low-power operation. The device reduces EMI noise with a frequency spread spectrum feature.

The Texas Instruments TPS563300 provides complete protections, including OTP, OVP, UVLO, cycle-by-cycle OC limit, and UVP with hiccup mode. This device is in a small SOT-583 (1.6mm × 2.1mm) package with a 0.5mm pin pitch. It has an optimized pinout for easy PCB layout and promotes good EMI performance.

Features

Ease of use and small solution size
- Peak current control mode with internal compensation
- Pulse frequency modulation (PFM) for high light-load efficiency
- 500kHz fixed switching frequency
- EMI friendly with frequency spread spectrum
- Support start-up with pre-biased output
- Cycle-by-cycle OC limit for both high-side and low-side MOSFETs
- Non-latched protections for OTP, OCP, OVP, UVP, and UVLO
- 1.6mm × 2.1mm SOT-583 package

Configured for a wide range of applications
- 3.8V to 28V input voltage range
- 0.8V to 22V output voltage range
- 3A continuous output current
- 0.8V ± 1.5% reference voltage (25°C)
- –40°C to 150°C operating junction temperature
- Integrated 76mΩ and 32mΩ MOSFETs
- 20µA low quiescent current (typical)
- Maximum 98% duty cycle operation
- Precision EN threshold

Applications

Building automation, appliances, industrial PC
Multifunction printers, enterprise projectors
Portable electronics, connected peripherals

Smart speakers, monitors
Distributed power systems with 5V, 12V, 19V, and 24V input

Texas Instruments TPS563300 3A Synchronous Buck Converter

Features

Applications

Functional Block Diagram

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