The TPS92201AEVM provides an LED driver based on the TPS92201A buck regulator. The TPS92201AEVM is designed to operate with an input voltage in the range of 2.2 V to 5.5 V. The EVM is set up for a default output current of 0.5 A at 3.3 V / 100% duty cycle PWM input. The load can be selected as 1 IR light, 2 IR lights ,1 white LED or external self-defined LED load through the jumper. The TPS92201 helps provide high efficiency, wide dimming range, good line regulation, and low output ripple LED driver.

• 2.5-V to 5.5-V input voltage range
• 1-/1.5-A constant output current
• Up to 95% efficiency
• 35-μA operating quiescent current
• 1-μA shutdown current
• 200-mΩ (HS) / 160-mΩ (LS) MOSFETs
• Up to 100% switching duty cycle
• 1.5-MHz switching frequency
• Force PWM mode for low output ripple
• Power save mode for high efficiency in light load (for TPS92201A)
• 0.1-V to VIN output voltage range
• 100 mV feedback regulation voltage
• 1% to 100% analog dimming
• 20-kHz to 200-kHz PWM input frequency
• Internal soft startup
• Full protection with over current, LED open/short, FB resistor open/short
• Thermal shutdown protection
• Available in ultra-small SOT563 package