16-channel DC DC controller for backlight LED strings
The Texas Instruments TLC69600RTWR is a 16-channel DC DC controller designed for backlight applications, delivering up to 20V output and 30 mA per channel. It requires external MOSFETs — no internal switches — so the BOM includes the pass FETs and their gate-drive loop. The 3V to 5.5V supply range lets it run from a single Li-ion cell or a 3.3V/5V rail common in display power trees.
20V output and 30 mA per channel — sizing the LED string
The 20V output ceiling supports up to five or six series-connected white LEDs in a typical backlight string, depending on forward voltage. Each of the 16 channels sinks 30 mA, which is the mid-power LED sweet spot — enough for a 7- to 10-inch panel at reasonable brightness without pushing the thermal budget of the 24-WFQFN exposed pad package. The controller itself does not carry the LED current; the external MOSFETs and sense resistors handle the power dissipation, so the layout needs a clean Kelvin connection from the sense resistor to the controller's current-sense pin.
The ROHS3 compliance and active lifecycle status mean no near-term obsolescence risk for production builds.
The 16-channel controller with external MOSFETs is a distinct topology from single-channel boost regulators like the LM2703MF-ADJ/NOPB; they are not drop-in alternatives.