CY8CMBR3002-SX1IT - 2-Button CapSense Express | Infineon
N.º de pieza: CY8CMBR3002-SX1IT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.0179 | $0,02 |
| 10 | $0.016 | $0,16 |
| 100 | $0.014 | $1,40 |
| 500 | $0.012 | $6,00 |
| 1.000 | $0.01 | $10,00 |
| 2.500 | $0.008 | $20,00 |
CY8CMBR3002-SX1IT Descripción general
A CapSense controller is a specialized mixed-signal IC that replaces mechanical buttons by detecting changes in capacitance caused by finger proximity or touch. Capacitive touch controllers sit within the broader category of human-machine interface (HMI) ICs, alongside touch-screen controllers, proximity sensors, and gesture-recognition devices. The CY8CMBR3002-SX1IT specifically targets simple button-only applications where ultra-low standby power, robust water-tolerance, and a minimal external BOM are more important than host MCU programmability.
Key differentiating features include 2 CapSense I/O supporting up to 2 buttons, integrated SmartSense auto-tuning that eliminates manual CAPSENSE parameter calibration, an active-low mechanical replacement output (active-low when finger detected, active-high on release), I2C/SMBus configuration interface, low standby current optimized for battery-powered products, and an operating voltage range of 1.71 V to 5.5 V that covers 1.8 V, 3.3 V, and 5 V rails. The SOIC-8 footprint eases hand-soldering and rework compared to QFN alternatives.
Architecturally, the CY8CMBR3002-SX1IT uses a Sigma-Delta ADC plus a proprietary CSD PLUS signal-processing pipeline to convert capacitive changes into digital button-state outputs. On-chip EEPROM-backed configuration registers allow designers to tune sensitivity, response time, and noise immunity through EzClick/I2C, eliminating firmware development and reducing time-to-market versus a programmable PSoC solution.
Typical applications include replacement of mechanical buttons in white goods, kitchen appliances, and consumer electronics; touch keypads in audio devices and remote controls; rugged sealed keypads in industrial control panels; waterproof buttons for outdoor IoT devices; and low-power wake-up buttons in battery-powered smart-home sensors. The wide 1.71 V to 5.5 V range also supports single-cell Li-ion or 3 V coin-cell operation.
When designing with the CY8CMBR3002-SX1IT, choose the external sense capacitor and PCB overlay geometry to balance sensitivity against water-film immunity. Power the device from a clean rail because noise on VDD directly translates into false-touch events, and place the device close to the sensors to keep the capacitive trace area small.
This page synthesizes distributor pricing from LCSC and Octopart, cross-references pin-compatible Infineon MBR3 family alternatives, and packages practical design notes that are not consolidated in the manufacturer datasheet alone.
Alternativas directas para CY8CMBR3002-SX1IT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
CY8CMBR3002-SX1I
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CY8CMBR3002-SX2IT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CY8CMBR3110-SX2IT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CY8CMBR3002-SX1IT Valores máximos y características eléctricas
| Product Type | Capacitive touch button controller (CapSense Express) |
| Family | CAPSENSE MBR3 |
| Sensing Technology | CSD PLUS (CapSense Sigma-Delta Plus) |
| Number of CapSense I/O Channels | 2 |
| Number of Buttons Supported | 2 |
| Supply Voltage (VDD) | 1.71 V to 5.5 V |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C |
| Tipo de salida | Active-low mechanical replacement output (configurable) |
| Configuration Interface | I2C / SMBus |
| Auto-tuning | SmartSense auto-tuning (no manual calibration) |
| Encapsulado | 8-pin SOIC (SO-8) |
| Package Dimensions | 3.90 mm body width (SOIC-8 standard) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | MSL3 (per JEDEC J-STD-020, Infineon SOIC family) |
| Estado RoHS | Compliant |
Configuración de pines de CY8CMBR3002-SX1IT
| Pin 1 | CS0 — CapSense sensor input 0 (connect to touch button pad) |
| Pin 2 | CS1 — CapSense sensor input 1 (connect to touch button pad) |
| Pin 3 | VDD — Power supply input (1.71 V to 5.5 V) |
| Pin 4 | GND — Ground reference |
| Pin 5 | OUT — Active-low mechanical-replacement output (open-drain) |
| Pin 6 | SCL — I2C / SMBus clock for configuration |
| Pin 7 | SDA — I2C / SMBus data for configuration |
| Pin 8 | RST/nSHIELD — Reset / optional water-tolerance shield driver |
Aplicaciones típicas
CY8CMBR3002-SX1IT es adecuado para 6 aplicacións: White Goods Mechanical-Button Replacement, Kitchen Appliance Touch Keypads, Audio Device Touch Controls, Industrial Sealed Control Panels, IoT Smart-Home Sensor Wake-Up Buttons, Wearable and Portable Device Buttons.
White Goods Mechanical-Button Replacement
The CY8CMBR3002-SX1IT's 2-channel CapSense Express architecture is purpose-built to replace electromechanical push-buttons on washing machines, dishwashers, and refrigerators where the SOIC-8 footprint and -40°C to +85°C rating survive high-humidity and high-temperature appliance environments. Designers wire each CSx pin to a copper pad overlay and use the OUT pin to drive a relay or microcontroller interrupt, eliminating moving parts and the IP-sealing gaskets that mechanical switches require. With SmartSense auto-tuning the device calibrates itself on power-up, eliminating manual CAPSENSE compensation that previously required firmware engineers to tune each production batch. The 1.71 V to 5.5 V supply range lets a single PCB layout accept 3.3 V or 5 V rails without hardware changes, and the active-low output directly interfaces a relay driver or a host MCU GPIO. The CY8CMBR3002-SX1IT replaces the CY8C4014SQI-420 in applications where the firmware-development overhead of a programmable PSoC cannot be justified.
Recomendado
Kitchen Appliance Touch Keypads
Coffee makers, microwave ovens, induction cooktops, and rice cookers use the CY8CMBR3002-SX1IT to deliver sealed glass-overlay touch controls that survive steam, splashes, and greasy fingerprints. The CSD PLUS sensing technology provides water-tolerance and signal-to-noise ratios high enough that a wet overlay or a finger covered in cooking oil still produces a clean button-press event, while SmartSense auto-tuning dynamically compensates for temperature drift across the cooktop's heat gradient. Two buttons are enough for typical kitchen-appliance use cases such as start/cancel or +/-; for richer UIs, designers can place multiple CY8CMBR3002-SX1IT devices on a single I2C bus with different I2C addresses. The SOIC-8 package is hand-solderable for low-volume SKUs and reflow-compatible for mass production.
Recomendado
Audio Device Touch Controls
Bluetooth speakers, soundbars, and headphone amplifiers integrate the CY8CMBR3002-SX1IT to implement play/pause and volume-up/down buttons with a sleek acrylic overlay. The CY8CMBR3002-SX1IT's active-low output and 1.71 V minimum supply make it ideal for single-cell Li-ion (3.0-4.2 V) audio products where a low quiescent current preserves battery life between uses. Designers mount the device near the speaker grille and route short, narrow CSx traces to copper pads underneath a thin plastic overlay; SmartSense auto-tuning eliminates production-line sensitivity adjustments that would otherwise raise the bill of materials. The CY8CMBR3002-SX1IT replaces mechanical tact switches that fail after 50,000 cycles and gives the audio product a modern, sealed surface finish.
Recomendado
Industrial Sealed Control Panels
Industrial control panels for factory automation, HVAC, and process-control HMIs rely on the CY8CMBR3002-SX1IT to deliver sealed, IP65-rated front-panel buttons that survive oil, coolant, and metal dust. The CSD PLUS Sigma-Delta sensing pipeline and configurable noise-immunity registers let designers tune the device to reject the RF and motor-noise interference common on factory floors, while the -40°C to +85°C operating range handles outdoor cabinets and unheated warehouses. Two buttons per IC support start/stop or reset/acknowledge functions; engineers can daisy-chain multiple CY8CMBR3002-SX1IT devices on a single I2C bus to scale to larger panels without redesigning the host firmware. The CY8CMBR3002-SX1IT eliminates the rubber-gasket maintenance cycles that mechanical push-buttons require.
Recomendado
IoT Smart-Home Sensor Wake-Up Buttons
Battery-powered IoT sensors, smart locks, and security panels use the CY8CMBR3002-SX1IT as a wake-up button that draws microamps in standby and brings a sleeping host MCU online on touch. The 1.71 V minimum supply lets the device run directly from a CR2032 coin cell, and its low quiescent current preserves multi-year battery life in devices that wake only on user interaction. SmartSense auto-tuning compensates for the slow electrode-aging effects of coin-cell powered sensors, eliminating the manual recalibration that mechanical-only systems require. The active-low OUT pin drives a host-MCU interrupt directly, and the I2C/SMBus configuration interface lets designers re-tune sensitivity over-the-air through the host MCU's wireless link.
Recomendado
Wearable and Portable Device Buttons
Wearable fitness trackers, Bluetooth headsets, and portable medical devices use the CY8CMBR3002-SX1IT to implement sealed side-buttons that survive sweat and hand sanitizer. Two channels cover typical side-button counts (volume +/- or mode select), and the SOIC-8 package fits inside the tight 30 mm x 15 mm wearable footprints where QFN alternatives struggle. Designers route the CSx pins to small copper pads on the inside of the device enclosure, and the CY8CMBR3002-SX1IT's SmartSense auto-tuning ignores the sweat films that accumulate during exercise. The CY8CMBR3002-SX1IT draws negligible current between touches, preserving the multi-day battery life that wearable users expect.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para CY8CMBR3002-SX1IT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | CY8CMBR3002-SX1I | CY8CMBR3002-SX2IT | CY8CMBR3110-SX2IT | CY8CMBR3106S-LQXIT |
|---|---|---|---|---|---|
| Package | SOIC-8 (3.90 mm body) | SOIC-8 - same | SOIC-8 - same | SOIC-8 - same | QFN-16 - different |
| Brand | Infineon | Infineon - same | Infineon - same | Infineon - same | Infineon - same |
| CapSense I/O Channels | 2 | 2 - same | 2 - same | 1 - lower | 6 - higher |
| Supply Voltage | 1.71 V to 5.5 V | 1.71 V to 5.5 V - same | 1.71 V to 5.5 V - same | 1.71 V to 5.5 V - same | 1.71 V to 5.5 V - same |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same |
| Configuration Interface | I2C / SMBus | I2C / SMBus - same | I2C / SMBus - same | I2C / SMBus - same | I2C / SMBus - same |
| Sensing Technology | CSD PLUS | CSD PLUS - same | CSD PLUS - same | CSD PLUS - same | CSD PLUS - same |
| Auto-tuning | SmartSense | SmartSense - same | SmartSense - same | SmartSense - same | SmartSense - same |
Diferenciadores clave
- No firmware required - configuration-only operation via I2C/EzClick (frente a CY8C4014SQI-420 (programmable PSoC 4000S))
- 2-button density in SOIC-8 footprint with CSD PLUS water tolerance (frente a Microchip CAP1203 (3-channel SOIC-8))
- 1.71 V minimum supply supports coin-cell operation (frente a Microchip CAP1203 (3.0 V minimum))
Notas de diseño
Keep the CY8CMBR3002-SX1IT as close as practical to the CSx touch pads and route the CSx traces as short, narrow traces over a hatched ground pour to minimize stray capacitance and maximize signal-to-noise ratio. Per the Infineon MBR3 hardware-design guide, the CSx trace length should not exceed 50 mm in noisy environments, and the trace width should be ≤ 0.25 mm to limit parasitic capacitance to ground. Add a guard trace or hatched shield around the CSx trace when the device sits near switching power or motor drivers.
Power the CY8CMBR3002-SX1IT from a clean VDD rail because noise on the supply directly translates into false-touch events or reduced sensitivity. Place a 1 µF X7R ceramic bypass capacitor within 5 mm of the VDD pin, and a 100 nF X7R within 2 mm, to suppress high-frequency noise. If the host board has a switching regulator nearby, add a ferrite bead in series with VDD to isolate the device from switching ripple that SmartSense cannot fully reject.
Do not exceed the CSx absolute maximum ratings of -0.5 V to VDD + 0.5 V; ESD strikes above 2 kV HBM can latch up the device without a TVS protection diode on each CSx pin. Avoid routing the CSx trace parallel to high-frequency signals such as I2C, SPI clocks, or PWM motor drives - cross at 90 degrees or use a ground shield. Do not omit the I2C pull-up resistors on SCL and SDA, and do not share the I2C bus with devices that hold the bus low for longer than 25 ms (the MBR3 I2C watchdog will reset the configuration).
Use a non-conductive overlay (acrylic, polycarbonate, or glass) of 1 mm to 3 mm thickness between the CSx pad and the user's finger; thicker overlays reduce sensitivity. Per Infineon's CAPSENSE design guide, the CSx copper pad area should be 10 mm to 15 mm diameter for typical 2 mm acrylic overlays, and a hatched ground pour around the pad (with at least 1 mm gap) prevents finger-area extension that would otherwise widen the touch footprint and trigger adjacent buttons.
Información de cumplimiento
RoHS and lead-free per Infineon product page; REACH, halogen-free, and conflict-minerals status are not stated in the verified distributor data and are marked [DATA_NEEDED] in the validation note. AEC-Q100 is not_applicable because the MBR3 family targets consumer and industrial HMI, not automotive.
