High-efficiency LED backlight driver featuring a 1 MHz operating frequency and adjustable output voltage up to 28V. This surface mount integrated circuit supports 6 channels, each capable of delivering 25mA output current, with a total output current of 160mA. Designed for tablets, it operates from a 2.7V to 5.5V input voltage range, with a nominal input of 3.8V, and offers PWM dimming. The device functions across a wide temperature range of -30°C to 85°C and is RoHS compliant.
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Texas Instruments LP8557AYFQT technical specifications.
| Dimming | PWM |
| Frequency | 1MHz |
| Lead Free | Lead Free |
| Max Input Voltage | 5.5V |
| Min Input Voltage | 2.7V |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -30°C |
| Max Output Voltage | 28V |
| Min Output Voltage | 7V |
| Max Supply Current | 2.2mA |
| Max Supply Voltage | 5.5V |
| Mount | Surface Mount |
| Nominal Input Voltage (DC) | 3.8V |
| Number of Channels | 6 |
| Number of Outputs | 6 |
| Operating Frequency | 1 MHz |
| Output Current | 160mA |
| Output Current per Channel | 25mA |
| Output Type | Adjustable |
| Output Voltage | 28V |
| Package Quantity | 250 |
| Packaging | Tape and Reel |
| Radiation Hardening | No |
| RoHS Compliant | Yes |
| Topology | Boost |
| RoHS | Compliant |
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