NXP Semiconductors PCA9632DP2Z

Overview

PCA9632DP2Z from NXP Semiconductors is a 4-bit Fast-mode Plus (Fm+) I²C-bus LED driver optimized for RGBA color mixing, featuring 4 open-drain/totem-pole LED outputs with 25 mA sink capability at 5 V, 1.5625 kHz individual PWM (8-bit), and 190 Hz group PWM (4-bit). It operates from 2.3 V to 5.5 V and supports software reset and programmable I²C subaddresses for multi-device control in compact handheld displays.

For engineers reviewing the PCA9632DP2Z datasheet, PCA9632DP2Z pinout, PCA9632DP2Z application, or PCA9632DP2Z equivalent, key selection considerations include its TSSOP10 package with hardware address pins A0/A1, 1 MHz Fm+ bus compatibility, low standby current (<1 μA), 5.5 V-tolerant inputs, and drop-in replacement status per PCN 202104008A for legacy PCA9633-based designs.

Technical Context

The PCA9632DP2Z implements dual PWM architecture: an 8-bit individual PWM controller per LED (1.5625 kHz, 0–99.6% duty) and a 4-bit group PWM (190 Hz, 0–93.75%) for global dimming. Its Fm+ interface supports up to 1 MHz clocking and 4000 pF bus capacitance with 30 mA SDA drive strength.

Configuration is managed via 12 dedicated I²C registers including MODE1/MODE2 for output mode selection (open-drain vs. totem-pole), LEDOUT for per-channel state control (off/on/individual/group), and GRPFREQ/GRPPWM for blink timing (24 Hz to 0.09 Hz) and duty cycle resolution (64- or 256-step depending on frequency range).

Key Specifications

Pinout & Package

TSSOP10 package (SOT552-1) with exposed pad for thermal enhancement; 10-pin surface-mount outline, 0.5 mm lead pitch, 3 mm body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with PCA9633DP1 and TLC59116IPWPR, the PCA9632DP2Z uniquely balances ultra-low power, integrated blink timing, hardware address flexibility in a 10-pin TSSOP, making it optimal for space-constrained, battery-sensitive RGBA interfaces where group-level animation is essential.

Availability

PCA9632DP2Z is available at Aetrix Electronics and suitable for RGB LED color mixing, keypad backlighting, LED status indication, and small LCD backlighting requiring stable component supply and long-term design continuity.

Supply support for PCA9632DP2Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in I²C peripheral integration and low-power mixed-signal design.

The PCA9632 product line was designed specifically for energy-efficient, software-configurable LED control in space-constrained portable electronics - emphasizing drop-in upgrade paths, minimal external components, and robust bus operation in noisy environments.

FAQ

What is the pin configuration of the PCA9632DP2Z?

The PCA9632DP2Z uses a 10-pin TSSOP package (SOT552-1) with pins assigned as follows: LED0–LED3 (outputs), VDD (2.3–5.5 V supply), VSS (ground), SCL and SDA (I²C interface), and A0/A1 (hardware address inputs). Pin 6 is VSS, pin 7 is A1, pin 8 is SCL, pin 9 is SDA, and pin 10 is VDD - matching Figure 3 in the official NXP datasheet Rev. 6.

Does the PCA9632DP2Z support both open-drain and totem-pole output modes?

Yes, the PCA9632DP2Z supports both output configurations via the OUTDRV bit in MODE2 register (address 01h). When OUTDRV = 0, outputs operate as open-drain with 25 mA sink capability; when OUTDRV = 1, they operate as totem-pole with 25 mA sink and 10 mA source at 5 V - enabling direct LED drive or interfacing with external drivers.

How does the group blinking function work in the PCA9632DP2Z?

The PCA9632DP2Z implements group blinking using two registers: GRPFREQ (07h) sets blink period from 24 Hz to 0.09 Hz (10.73 s), and GRPPWM (06h) sets duty cycle. For frequencies ≥6 Hz, GRPPWM uses 6-bit resolution (0–98.4%); for ≤6 Hz, it uses full 8-bit resolution (0–99.6%). This dual-resolution scheme ensures precise timing control across the full blink range.

Is the PCA9632DP2Z a direct replacement for the PCA9633?

Yes - according to NXP's Discontinued Notice 202104010DN and PCN 202104008A, the PCA9632DP2Z is a documented drop-in replacement for the PCA9633, offering identical pinout (TSSOP10), register map, and I²C protocol while delivering 40× lower power consumption and enhanced Fm+ bus performance up to 1 MHz.

What is the maximum I²C bus capacitance supported by the PCA9632DP2Z?

The PCA9632DP2Z supports up to 4000 pF total bus capacitance when operating in Fast-mode Plus (Fm+) at 1 MHz, enabled by its 30 mA high-drive SDA output stage and integrated edge rate control. This allows reliable communication across dense PCB layouts or multi-drop configurations without external bus buffers.