What this part is — and what it replaces on a BOM
The Cypress CY8CMBR2016-24LQXI is a dedicated capacitive button controller from the CapSense® Express™ family, designed to offload touch-sensing from a system MCU. It handles up to 16 capacitive touch inputs and integrates up to 16 LED driver channels for backlighting or status indicators, eliminating the need for a separate GPIO expander or LED driver IC. The supply voltage range spans 1.71V to 5.5V, covering 3.3V and 5V logic rails as well as single-cell Li-ion down to near-depletion. Typical supply current is 3.3 mA, making it viable for always-on touch panels in battery-powered handhelds.
Industrial temperature grade — deployment environments
Rated for -40°C to 85°C, this part fits industrial and outdoor equipment: factory automation HMI panels, outdoor kiosks, commercial appliance front panels, and automotive cabin touch controls where the ambient stays below 85°C. The 48-UFQFN package with exposed pad needs a thermal via array under the pad for heat spreading — the 3.3 mA draw is modest, but the LED driver outputs can sink higher current per channel, and the pad keeps junction temperature in check when driving multiple LEDs.
Lifecycle and sourcing posture
Cypress lists the CY8CMBR2016-24LQXI as an active product — no last-time-buy notice, no NRND flag. This means it can be specified into new designs without an obsolescence risk horizon. For volume production, the active status supports multi-year supply commitments.
What the 16-button and 16-LED-channel count means for BOM consolidation
Sixteen capacitive inputs cover a typical appliance or industrial keypad — numeric pad, navigation cluster, dedicated function keys. The matching 16 LED driver channels mean each button can have its own backlight or status LED without external transistors or a separate LED controller. This integration collapses what would otherwise be an MCU with firmware, a touch IC, and an LED driver into a single configurable device. No proximity detection is available, so this part is for contact-only touch buttons, not hover or wake-on-approach.