Lumissil IS31FL329X 3,6,9Ch LED drivers

The IS31FL3293, IS31FL3296, and IS31FL3299 devices consume less than 400uA when fully operational and only 0.3uA when placed into sleep mode. Each LED Ch can sink upto 40mA with an accuracy of ±5% between Chs and between parts.  A 6-bit global current register will adjust all the Ch currents to a value lower than the default 40mA; an 8-bit register will individually tune the LED current for each Ch. A dedicated 12-bit PWM register for each channel enables accurate color mixing of the Red, Green and Blue LEDs. An integrated “auto breath” engine will create gamma corrected fade ON/Off transition cycles over a period of time or indefinitely.

Key features

• Power Saving: Reduces power consumption by a factor of 10, compared to standard drivers
• High color resolution: A programmable 12-bit PWM generator and 8-bit current register
• Programmable patterns: Gamma corrected fade ON/OFF engine with sequence state machine
• Small package: UTQFN-9 (BGA) for IS31FL3293 and QFN-20 (3x3mm) for IS31FL3296/9

Additional features

• Supply voltage range: 2.7V to 5.5V
• IS31FL3293: 3 current sinks, I_OUT= 20mA (Max.), Ultra-low operational current (90µA Typ. at V_CC=3.6V, all LED off) 
• IS31FL3296: 6 current sinks, I_OUT= 40mA (Max.),Ultra-low operational current (250µA Typ.500µA Max. at V_CC= 3.6V)
  • Shutdown mode: 1μA (Max.) with SDB low
  • Power-saving mode: 10μA (Typ.) with SDB highand all LEDs off 
     
• IS31FL3299: 9 current sinks, IOUT= 40mA (Max.), Ultra-low operational current (250µA Typ.500µA Max. at V_CC=3.6V)
  • Shutdown mode: 1μA (Max.) with SDB low
  • Power-saving mode: 10μA (Typ.) with SDB high and all LEDs off
     
• Accurate color rendition
  • 12-bit PWM/channel
  • 8-bit Current Level/channel
  • 6-bit global DC current adjust
     
• SDB rising edge reset I²C module
• 1MHz I2C-compatible interface
• IS31FL3293: ±5% accuracy and mismatch @I_OUT= 20mA and I_OUT= 3mA
• IS31FL3296/3299: +-6% accuracy and mismatch @I_OUT= 20mA and I_OUT= 3mA 
• IS31FL3293 Auto breath function:
  • Auto breath pattern for 3 channels and each channel can quit the pattern and control by CL&PWM
  • Fade in/ fade out time length max value up to 9.96s.
     
• IS31FL3296/99 Auto breath function:
  • 3 patterns auto breath(12b@220Hz), Other channel can quit the pattern and control by SL&PWM
  • Fade IN/ Fade OUT time length max value up to 5~8s
     
• Commen Auto breath funtion:
  • Single Pulse/Multi pulse/Manual control modes for auto breath.
  • 3 color pre-configure registers for color breath
     
• IS31FL3293: UTQFN-9 (1.5mm × 1.5mm) package
• IS31FL3296/99: 23kHz PWM frequency (8+4 PWM mode), QFN-20 (3mm×3mm) package

Applications

• Battery applications
• Personal grooming – Shavers, electric toothbrush
• Gaming appliance – VR Headset, battery powered mouse
• Medical devices – glucose monitoring, smart autoinjector