Topic: Technology Linear Technology Corporation has introduced the LT3498, a dual output boost converter that includes a 2.3MHz PWM LED driver and a low noise OLED driver.
Each channel of the LT3498 has an internal power switch and a Schottky diode that is included in a 2mm x 3mm DFN package. With a wide input voltage range of 2.5V to 12V, it can operate from a single input cell with a fixed input rail of up to 12V with an output voltage of up to 32V. When using a single-cell ion-cell input, the LED driver can also drive up to six 20mA white LEDs in series, while the OLED driver can deliver up to 24mA/16V output, and each converter can be independently dimmed or shut down. .
The LT3498 features a high-side current sense topology that provides a single-wire current source for the LED driver. In addition, the OLED driver uses a unique control circuit that achieves high efficiency and low output ripple over a wide load current range, ensuring that the switching frequency remains above the audio band over the entire load range, making the device very Suitable for noise sensitive applications such as MP3 players and cellular phones, the device also features LED open circuit protection and OLED output disconnect.
The LT3498 EDDB is currently available from stock in a 12-lead 2mm x 3mm DFN package and is available in 1,000-piece quantities starting at $1.95 each.
Each channel of the LT3498 has an internal power switch and a Schottky diode that is included in a 2mm x 3mm DFN package. With a wide input voltage range of 2.5V to 12V, it can operate from a single input cell with a fixed input rail of up to 12V with an output voltage of up to 32V. When using a single-cell ion-cell input, the LED driver can also drive up to six 20mA white LEDs in series, while the OLED driver can deliver up to 24mA/16V output, and each converter can be independently dimmed or shut down. .
The LT3498 features a high-side current sense topology that provides a single-wire current source for the LED driver. In addition, the OLED driver uses a unique control circuit that achieves high efficiency and low output ripple over a wide load current range, ensuring that the switching frequency remains above the audio band over the entire load range, making the device very Suitable for noise sensitive applications such as MP3 players and cellular phones, the device also features LED open circuit protection and OLED output disconnect.
The LT3498 EDDB is currently available from stock in a 12-lead 2mm x 3mm DFN package and is available in 1,000-piece quantities starting at $1.95 each.
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