| ISD(uA) | 0.1 |
|---|---|
| LED | 4 |
| Vdd(V) | 4.5-33 |
| Solder | Lead-free (RoHS Compliant) |
| Status | Prod |
| IOUT(mA) | 20-180mA per channel |
| Pkg Pin(mm) | eTSSOP-16 |
| Document | Eval BoardCalculator |
| Temp.Range | Automotive Grade (-40C to +125°C) |
| Type | 3554 |
| Product Type | BL = White LED Driver for LCD Backlight |
| Intensity Ctrl. | PWM |
| Product Family | 32 = Automotive Analog and Mixed Signal |
| Type of Driver | Boost |
| Part Number | 3554 = 3554 |
| Temperature Grade | A3 = Automotive temp. (-40°C to 125°C) |
| Package option | blank = Tray or Tube |
| Solder Type | L = Lead-free (RoHS Compliant) |
| Package Type | Z = TSSOP |
The IS32BL3554 is a white LED driver for backlight applications based on a highly efficient boost controller operating over a wide input voltage range of 4.5V to 33V. The IS32BL3554 contains four regulated current sources with 1.5% (Typ.) current matching between strings for a uniform LED brightness. Each current source can be programmed via an external resistor to drive from 20mA to 180mA. A fast slew rate current source allows high frequency and narrow pulse width dimming signals to achieve a very high contrast ratio. The device operating frequency can be adjusted from 0.1MHz to 1MHz. The IS32BL3554 has safety protection features to prevent damage during fault conditions. Protection features include an internal soft-start circuit to prevent a high inrush current during startup, open/short LED protection to automatically disable a faulty current source, over temperature protection (OTP), cycle-by-cycle current limit, under voltage lockout (UVLO), programmable OVP, VOUT short / Schottky diode open protection and Schottky Diode short-circuit protection. The IS32BL3554 is available in a thermally enhanced eTSSOP-16 package.