· LED topology: - AM 4 constant current sink, each current sink can support 1~10 LEDs
· Operating voltage range: - VCC range: 3.0V to 5.5V - Interface pin compatible with: 3.3V/5.0V - LED supply voltage range: up to 40V
· Constant current sinks with high precision: - 0.3~80mA per channel sink when VCC>3V - Device-to-device error: ±1.5% - Knee voltage:600mV in 40mA
· PWM dimming options: - Global 8-bits maximum current (GC) setting from 0.3mA~80mA
· PWM dimming control:12 bits
· Ultra-low quiescent current: - 100µA in standby mode. - 1.5mA in normal mode @60mA
· Automatic Voltage range detection for VLED Headroom voltage control.
· LED open (LOD)/ short (LSD) detection
· Over temperature detect and chip protection: - 120°C derating options - 150°C Shut down
· Progr🔜ammable interface output ability for EMI
· Phase-shift PWM scheme.
· Two-wire interface compatible with common SPI, data transfer rate: 10MHz(max.)
· UART output for inteꦬrnal information readback🙈.
· Interrupt output for system level ERROR information handle.
· ESD: 4000V HBM
The TMI🎶9405 is a 4-channel, internal current sink, high precision, mini-LED backlighting driver for high dynamic range (HDR) LCD TVs, monitors and notebook displays. The device reports the voltage on t🔜he OUT pin to MCU to enable best system efficiency and thermal performance. The TMI9405 integrates the ability to used digital dimming methods in one device. With an 8-bit global and 12-bit PWM digital dimming, the device improved contrast ratio in🌠 HDR displays. The current sinks can drive up to 40mA per channel and have very tightly controlled current accuracy. A full array or protection circuits are integrated, including ওbuilt-in LED open/short detection, over temperature protection and protection during both start-up and normal operation.