· LED topology: - AM 4 constಌant 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: - 0.156~40mA per channel sink when VCC>3V - Device-to-device error: ±1.5% - Knee voltage:400mV in 20mA
· PWM dimming options: - Global 8-bits maximum current (GC𝓰ও) setting from 0.156mA~40mA
· PWM dimming control:12 bits
· Ultra-low quiescent current: - 100µA in standby mode. - 1.0mA in normal mode @40mA
· 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
· Programmable 💜interface output ability for EMI
· Phase-shift PWM scheme.
· Two-wire interface co🅠mpatible with common SPI, data transfer rate: 20MHz(max.)
· UART output 🐭for internal informat♎ion readback.
· Interrupt output for system level ERROR information handle.
· ESD: 4000V HBM
The TMI9404 is a 4-channeওl, internal current sink, high precision, mini-LED bac🐻klighting driver for high dynamic range (HDR) LCD TVs, monitors and notebook displays. The device reports the vol🐼tage on the OUT pꦆin to MCU to enable best system efficiency and thermal performance. The TMI9404 integrates the ability to used digꦓital 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 curre🍰n🐼t sinks can drive ඣup to 40mA per channel and have very tightly 🃏;controlled current accuracy. A full array or protection circuits are in🍌tegrated, including built-in LED open/short detection, over temperature protection and protection during both start-up and normal operation.
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