Boost regulator for LED backlight strings
It integrates the switching FET internally and delivers up to 38 V at the output, with a 700 mA switch current limit that sets the LED string current budget. The 600 kHz switching frequency allows the use of small, low-profile inductors and ceramic capacitors, shrinking the total solution footprint for space-constrained backlight applications. PWM dimming input enables direct brightness control from a microcontroller PWM output without additional level-shifting or external DAC.
38 V output and 700 mA switch — sizing the LED string
The 38 V output ceiling supports a series string of white LEDs, making this part suitable for small-to-medium LCD backlights in portable instruments, point-of-sale terminals, and industrial displays. The 700 mA switch current limit is the peak current through the internal FET, not the continuous LED current — the actual LED current depends on the sense resistor and boost ratio.