JAJSKE4 March 2021 TPS92391
PRODUCTION DATA
This typical LED-driver application is designed to meet the parameters listed in Table 8-5:
DESIGN PARAMETER | VALUE |
---|---|
VIN voltage range | 4.5 V to 20 V (quiescent voltage) |
VDD voltage | 3.3 V |
LED strings configuration | 5 strings, 3 LEDs in series |
Charge pump | Enabled |
Brightness control | I2C |
Output configuration | OUT1 to OUT5 are in phase shift PWM mode |
LED string current | 80 mA |
Boost frequency | 2.2 MHz |
Inductor | 10 µH at 4-A saturation current |
RISENSE | 20 mΩ |
Power-line FET | Enabled |
RSENSE | 50 mΩ |
Input/Output capacitors | CIN and COUT: 1 × 33-µF electrolytic + 1 × 10-µF ceramic |
Spread spectrum | Enabled |
Discharge function | Enabled |