TI TPS92381PWPR

The TPS92380 and TPS92381 are highly integrated, high output power, easy-to-use LED drivers with a DC/DC converter. The DC/DC converter supports both boost and SEPIC operating modes. The device features four or three high-accuracy current sinks that can be combined for higher current capability. The DC/DC converter provides adaptive output voltage control based on LED forward voltage. This feature regulates the voltage to the minimum level required under all conditions, minimizing power dissipation. To reduce EMI, the DC/DC converter supports spread spectrum for switching frequency and external synchronization via a dedicated pin. With a wide adjustable frequency range, the TPS9238x can avoid interference in sensitive frequency bands. The TPS9238x operates over an input voltage range of 4.5V to 40V. The TPS9238x integrates comprehensive fault detection capabilities.

• 3-channel, 4-channel 120mA current sink
• High dimming ratio of 10,000:1 at 100Hz
• 1% current matching (typical)
• LED string current up to 120mA/channel, combinable externally to provide higher current per string
• Integrated boost and SEPIC converter for LED string power supply
• Input voltage operating range: 4.5V to 40V
• Output voltage up to 45V
• Integrated 3.3A switch FET
• Switching frequency: 300kHz to 2.2MHz
• Switching synchronization input
• Spread spectrum for reduced EMI
• Fault detection and protection
• Fault output
• Input OVP, UVLO, and OCP
• Boost block SW OVP and output OVP
• LED open-circuit and short-circuit fault detection
• Thermal shutdown

• Industrial backlight for mid-size panels
• Consumer backlight for mid-size panels
• Industrial lighting for LED panels