PCA9632DP2Z - 4-bit 25mA I2C LED Driver | NXP Semiconductors
N.º da peça: PCA9632DP2Z ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.23 | $3,23 |
| 10 | $2.9 | $29,00 |
| 100 | $2.41 | $241,00 |
| 500 | $1.95 | $975,00 |
| 1.000 | $1.62 | $1.620,00 |
PCA9632DP2Z Visão geral
An LED driver is an integrated circuit that regulates current and brightness for light-emitting diodes, eliminating the need for discrete current-limiting resistors and enabling software-controlled dimming. LED drivers occupy the lighting subsystem tier of an embedded product, sitting below the microcontroller (which commands colors and animation sequences) and above the physical LEDs. Within the LED-driver category, the PCA9632 belongs to the I2C-controlled constant-current driver sub-class, a category that includes both 8-bit PWM (e.g., PCA9685) and 4-bit group-brightness devices like this one. Choosing the right driver involves balancing bit depth (color resolution), per-channel current, bus speed, and standby power for the target application.
Key features include 4 individually controlled outputs, software-programmable group dimming (4-bit), individual LED brightness control, a 1 MHz Fm+ I2C interface, and ultra-low standby current. Each output delivers up to 25 mA and supports per-output programmable on/off and group dimming. The device integrates power-on reset, software reset, and four hardware-selectable I2C addresses via two ADDR pins, allowing up to 16 PCA9632 devices on a single bus for 64-channel systems.
Internally, the PCA9632 uses a current-switch architecture with 4-bit PWM for group dimming and 8-bit PWM per channel for individual brightness. The integrated constant-current sinks eliminate the need for external current-limiting resistors, simplifying PCB layout and improving channel-to-channel matching. The Fm+ I2C interface supports standard (100 kHz), fast (400 kHz), and fast-mode plus (1 MHz) bus speeds.
Typical applications include RGBA backlight control for handheld devices, RGB status indicators, decorative lighting, gaming peripherals, and IoT nodes with addressable color feedback. The 4-bit group dimming combined with 8-bit per-channel PWM produces 16 million effective colors (4,096 group steps x 256 channel steps).
When designing with this part, ensure the LED forward voltage plus headroom remains below VDD. Decouple VDD with a 100 nF ceramic capacitor close to the IC and follow I2C bus layout best practices for the 1 MHz Fm+ speed grade.
This page synthesizes distributor pricing, verified drop-in alternatives (including PCA9633 series same-brand parts and cross-brand pin-compatible replacements), datasheet references, and practical design notes not found in the NXP datasheet alone.
Alternativas drop-in para PCA9632DP2Z — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PCA9632DP1
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCA9633DP2Z
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PCA9632DP2
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCA9633DP1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PCA9632DP2Z Classificações máximas e características elétricas
| Product Type | I2C LED Driver |
| Número de saídas | 4 |
| Output Current per Channel | 25 mA |
| Topologia | Current Switch / Sink |
| Internal Switches | Yes |
| I2C Bus Speed | Up to 1 MHz (Fm+) |
| Group Dimming Resolution | 4-bit (16 steps) |
| Per-Channel Dimming | Yes (software programmable on/off and brightness) |
| Encapsulamento | 10-TSSOP (Tape & Reel, Z suffix) |
| Hardware Address Pins | 2 (ADDR0, ADDR1) - up to 4 selectable addresses |
| Software Features | Power-On Reset, Software Reset, Group Dimming, Individual Brightness Control |
| Status RoHS | Compliant |
| Tipo de montagem | Surface Mount |
Configuração de pinos do PCA9632DP2Z
| Pino 1 | A0 — I2C address select 0 (hardware address bit 0) |
| Pino 2 | A1 — I2C address select 1 (hardware address bit 1) |
| Pino 3 | LED0 — LED output 0 (current sink, 25 mA) |
| Pino 4 | LED1 — LED output 1 (current sink, 25 mA) |
| Pino 5 | GND — Ground reference |
| Pino 6 | LED2 — LED output 2 (current sink, 25 mA) |
| Pino 7 | LED3 — LED output 3 (current sink, 25 mA) |
| Pino 8 | SDA — I2C serial data (Fm+ up to 1 MHz) |
| Pino 9 | SCL — I2C serial clock (Fm+ up to 1 MHz) |
| Pino 10 | VDD — Positive supply voltage |
Aplicações típicas
PCA9632DP2Z é adequado para 6 aplicaçãos: RGBA LED Backlight Control, RGB Status Indicators in Industrial Equipment, Gaming Peripherals and Keyboards, IoT Color-Feedback Nodes, Decorative and Architectural Lighting, Automotive Interior Ambient Lighting.
RGBA LED Backlight Control
The PCA9632DP2Z is engineered for Red/Green/Blue/Amber color-mixing backlight applications where software-controlled dimming and low standby power are required. Its 25 mA per-channel current capability directly drives small-signal indicator and backlight LEDs without external current-limiting resistors, reducing BOM cost and PCB area. The 4-bit group dimming combined with 8-bit per-channel PWM generates 16 million effective colors for smooth animation transitions. The 1 MHz Fm+ I2C interface enables fast color updates across multi-device arrays on handheld devices, kiosks, and appliances where multiple PCA9632 chips share one bus.
Recomendado
RGB Status Indicators in Industrial Equipment
Industrial control panels, PLCs, and machine-status displays use the PCA9632DP2Z to drive RGB status indicators that communicate equipment state through color. The TSSOP-10 footprint occupies minimal PCB area, and the I2C interface reduces GPIO pin consumption on the host microcontroller compared to per-LED GPIO driving. Hardware address pins allow four PCA9632 devices on one bus, supporting up to sixteen color-coded status points per controller. The 40x power reduction versus PCA9633 makes this part ideal for always-on industrial monitoring equipment where standby current matters for energy budgets.
Recomendado
Gaming Peripherals and Keyboards
Mechanical gaming keyboards, mice, and controllers use the PCA9632DP2Z for per-key or zone RGB backlighting with software-customizable color profiles. The 25 mA channel current drives standard 3528 or 5050 RGB LEDs at typical 5 mA to 20 mA operating points, leaving ample headroom for high-brightness modes. The 1 MHz Fm+ I2C bus speed synchronizes color animations across multiple driver ICs without visible lag. NXP's standby current reduction extends battery life in wireless peripherals where the RGB subsystem is idle between user inputs.
Recomendado
IoT Color-Feedback Nodes
Smart-home sensors, weather stations, and connected appliances use the PCA9632DP2Z to provide visual color feedback that maps sensor state to hue. For example, a temperature sensor can shift from blue (cold) through green (comfortable) to red (hot) using the device's 16-million-color palette. The TSSOP-10 package fits within small-form-factor IoT enclosures, and the Fm+ I2C interface integrates easily with popular IoT microcontrollers. The 40x power reduction over PCA9633 is critical for battery-powered nodes where standby current dominates total energy consumption over the device's service life.
Recomendado
Decorative and Architectural Lighting
Architectural LED strips, accent lighting, and decorative installations deploy the PCA9632DP2Z for software-driven color sequences and group-brightness effects. The 4-bit group dimming enables global fade patterns while individual PWM controls maintain per-pixel variation across the strip. The TSSOP-10 package's small footprint allows the IC to be embedded inline within narrow LED strip profiles. NXP's software-reset and per-channel programmable shutdown features support energy-saving modes when zones are not in use, which is essential for commercial installations where lighting operates for thousands of hours annually.
Recomendado
Automotive Interior Ambient Lighting
Modern vehicle interior ambient lighting systems use the PCA9632DP2Z (or its automotive-qualified equivalent) for door-panel, footwell, and dashboard accent illumination. The I2C interface integrates with automotive body-control modules, and the per-channel programmable current allows mix-and-match of brightness across zones. The TSSOP-10 package's small size fits within confined wiring-harness enclosures. Designers should verify AEC-Q100 qualification status for the specific NXP automotive part number, since PCA9632DP2Z is the commercial-grade variant; the PCA9632 automotive versions carry different suffixes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PCA9632DP2Z — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PCA9632DP1 | PCA9633DP2Z | PCA9632DP2 | PCA9633DP1 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | TSSOP-10 | TSSOP-10 - same | TSSOP-10 - same | TSSOP-10 - same | TSSOP-10 - same |
| Output Current per Channel | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Number of Outputs | 4 | 4 | 4 | 4 | 4 |
| I2C Bus Speed | Up to 1 MHz (Fm+) | Up to 1 MHz (Fm+) | Up to 400 kHz (Fast-mode) | Up to 1 MHz (Fm+) | Up to 400 kHz (Fast-mode) |
| Power Consumption vs PCA9632 | Baseline (1x) | 1x (identical silicon) | 40x higher (PCA9632 is upgrade) | 1x (identical silicon) | 40x higher (PCA9632 is upgrade) |
| Group Dimming | 4-bit (16 steps) | 4-bit (16 steps) | 8-bit (256 steps) | 4-bit (16 steps) | 8-bit (256 steps) |
| Packaging Form | Tape & Reel (Z suffix) | Tube (DP1 suffix) | Tape & Reel (Z suffix) | Bulk (DP2 suffix) | Tube (DP1 suffix) |
Principais diferenciais
- Drop-in upgrade with 40x power reduction (vs PCA9633DP2Z)
- Higher I2C bus speed (1 MHz Fm+) (vs PCA9633DP2Z)
- Production-ready tape and reel packaging (vs PCA9632DP1 (tube))
Notas de projeto
Estimated: total supply current for the PCA9632DP2Z in active mode is the sum of four 25 mA output channels plus quiescent current. With all four channels driving 25 mA LEDs simultaneously, the VDD supply must source approximately 100 mA plus quiescent overhead. Designers should size the VDD regulator for at least 150 mA to provide margin for LED transient surge currents during PWM transitions.
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 10) to suppress high-frequency noise from the I2C bus and LED switching. Keep I2C SDA/SCL traces short (under 100 mm) and use 4.7 kohm to 10 kohm pull-up resistors sized for the 1 MHz Fm+ bus speed. Route LED output traces away from analog-sensitive signals since 25 mA switching can inject noise into nearby circuits.
Do not connect LEDs directly between VDD and the LED output pins assuming the part sources current; the PCA9632 outputs are current sinks (open-drain to GND). LEDs must be wired with anode to VDD and cathode to the LED output pin through an internal or external current path. Exceeding 25 mA per channel will damage the output transistors and voids the datasheet warranty.
Informações de conformidade
RoHS and REACH compliant per NXP material declaration. Z suffix indicates lead-free reflow compatibility. Commercial grade - not AEC-Q100 qualified; consult NXP for automotive-grade TSSOP variants if needed for automotive applications.
