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NXP Semiconductors PCA9633DP2,118
- Part No.:
- PCA9633DP2,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
PCA9633DP2,118.pdf
- Description:
- IC LED DRVR PS PWM 25MA 10TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,852
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Product details
Overview
PCA9633DP2,118 from NXP Semiconductors is a 4-channel I²C-bus LED driver optimized for RGBA color mixing, featuring four independent 8-bit (256-step) individual PWM controllers operating at 97 kHz, one 8-bit group PWM controller (190 Hz fixed or 24 Hz–10.73 s programmable), 2.3 V–5.5 V supply range, and TSSOP10 package with 2 address pins enabling up to 4 device addresses on one bus.
For engineers reviewing the PCA9633DP2,118 datasheet, PCA9633DP2,118 pinout, PCA9633DP2,118 application, or PCA9633DP2,118 equivalent, this device supports synchronized LED dimming/blinking via I²C Group Call addressing, hardware-addressed multi-device networks, and software-reset capability - critical for embedded status indicators, keypad backlighting, and RGB display control where precise per-LED brightness and global blink timing are required.
Technical Context
The PCA9633DP2,118 implements dual-layer PWM control: each of its four LED outputs uses a dedicated 97 kHz, 256-step individual PWM generator, while a shared group PWM register modulates all outputs simultaneously at either 190 Hz (dimming mode) or a user-defined frequency from 24 Hz to 10.73 s (blinking mode). Its Fast-mode Plus I²C interface supports up to 1 MHz clock rate and drives buses up to 4000 pF with 30 mA SDA drive strength.
Configurable output drivers support totem-pole (25 mA sink / 10 mA source at 5 V) or open-drain (25 mA sink) operation via MODE2 register bit OUTDRV. The TSSOP10 variant includes two hardware address pins (A0, A1), enabling 4 unique I²C slave addresses without requiring external pull-ups - distinguishing it from the 8-pin (fixed address) and 16-pin (7 address pins + OE) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fast-mode Plus (Fm+), up to 1 MHz - enables high-speed, noise-immune communication on densely loaded buses (≤4000 pF). |
| Individual PWM | 4 × 8-bit (256-step), 97 kHz fixed frequency - delivers smooth, flicker-free brightness control per LED channel. |
| Group PWM | 8-bit resolution, 190 Hz fixed (dimming) or 24 Hz–10.73 s programmable (blinking) - allows synchronized global intensity or blink effects across all LEDs. |
| Supply Voltage | 2.3 V to 5.5 V - supports direct integration into 3.3 V and 5 V systems without level-shifting. |
| Output Drive | Totem-pole: 25 mA sink / 10 mA source at 5 V; open-drain: 25 mA sink - selectable in software for direct LED driving or external driver interfacing. |
| Address Pins | 2 hardware pins (A0, A1) - provides 4 unique I²C slave addresses (11000xx format) for multi-device bus configuration. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and consumer portable applications including handheld devices. |
Pinout & Package
TSSOP10 package (SOT552-1), 3 mm body width, surface-mount, lead-free compliant. Pin 1 index marked; recommended reflow profile per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (LED0) | LED driver output 0 | Current-sink output for red/amber/primary LED channel; configurable as totem-pole or open-drain. |
| 2 (LED1) | LED driver output 1 | Current-sink output for green/secondary LED channel; independently PWM-controlled at 97 kHz. |
| 3 (LED2) | LED driver output 2 | Current-sink output for blue/tertiary LED channel; supports individual brightness + group dimming/blinking. |
| 4 (LED3) | LED driver output 3 | Current-sink output for alpha/RGBA fourth channel; fully synchronized with other outputs via GRPPWM/GRPFREQ. |
| 5 (A0) | I²C hardware address input 0 | Binary LSB of 2-bit address; pulled HIGH/LOW externally to select one of four slave addresses (1100000–1100011). |
| 6 (VSS) | Ground reference | Primary power return path; must be low-impedance connection to system ground plane. |
| 7 (A1) | I²C hardware address input 1 | Binary MSB of 2-bit address; enables deterministic multi-device addressing without software address conflicts. |
| 8 (SCL) | I²C serial clock input | Fast-mode Plus compatible; internal noise filter and edge-rate control ensure robust timing at 1 MHz. |
| 9 (SDA) | I²C bidirectional data line | 30 mA drive strength supports long traces or high-capacitance buses; open-drain with external pull-up required. |
| 10 (VDD) | Power supply input | 2.3–5.5 V operation; 5.5 V tolerant inputs allow mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Software Reset (SWRST) | Full register reset via I²C address 0x06 (R/W = 0) - restores all registers to POR defaults (outputs HIGH, LED off) without power cycle. |
| LED Group & Sub Call Addresses | 1 All Call + 3 Sub Call software-programmable I²C addresses - enables simultaneous control of LED groups (e.g., all reds) or hierarchical bus segmentation. |
| Output State Update Timing | Configurable change-on-STOP or change-on-ACK - ensures atomic brightness updates across multiple devices when synchronized by STOP condition. |
| Internal 25 MHz Oscillator | No external crystal or RC network required - reduces BOM count and PCB area while guaranteeing stable 97 kHz/190 Hz PWM timing. |
| Hot Insertion Support | IOFF protection and glitch-free power-up - prevents bus contention or LED flash during live insertion into powered systems. |
Applications
| RGB Status Indicators | Keypad Backlighting |
|---|---|
|
Use Scenario: Multi-color status feedback on industrial HMI panels or medical device front panels using discrete red/green/blue LEDs. IC Role / Device Role / Timing Role: PCA9633DP2,118 acts as the primary LED brightness and blink sequencer, delivering independent 97 kHz PWM per channel and synchronized group blinking at 190 Hz or programmable intervals. Use Value: Enables real-time color transitions and attention-grabbing blink patterns without MCU intervention, reducing firmware overhead and improving UI responsiveness. |
Use Scenario: Backlight control for membrane keypads in portable test equipment or handheld scanners with variable ambient light conditions. IC Role / Device Role / Timing Role: PCA9633DP2,118 serves as the dedicated backlight driver, applying individual PWM values to balance LED luminance and group PWM to implement adaptive dimming based on ambient sensor input. Use Value: Achieves uniform illumination across keys while minimizing current draw via 8-bit linear dimming - extending battery life without sacrificing visibility. |
| Small-Screen LCD Backlights | RGBA Color-Mixing Displays |
|
Use Scenario: Edge-lit monochrome or grayscale LCD backlights in POS terminals or instrumentation displays requiring compact, low-power drive. IC Role / Device Role / Timing Role: PCA9633DP2,118 drives 4 parallel white LED strings with matched current sinking, using group PWM for coarse brightness adjustment and individual PWM for local contrast compensation. Use Value: Eliminates need for discrete MOSFETs and op-amps; maintains consistent backlight intensity across temperature (-40°C to +85°C) with no calibration. |
Use Scenario: Full-color icon or segmented display in consumer electronics using red/green/blue/amber LEDs for enhanced gamut and warm-white rendering. IC Role / Device Role / Timing Role: PCA9633DP2,118 functions as the RGBA mixing engine, combining individual 256-step brightness control with group blink/dim to create dynamic color effects and visual alerts. Use Value: Delivers perceptually linear color blending via 97 kHz PWM - avoiding visible beat frequencies and enabling smooth hue transitions in resource-constrained MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59116IPWPR | 16-channel, I²C, 12-bit PWM (4096 steps), 28–32 V open-drain outputs; no group blink; requires external Vref. | Better suited for high-voltage LED arrays (e.g., signage), not direct 5 V RGBA mixing; lacks programmable group blink timing. | Select when >4 channels or higher PWM resolution is required; avoid if group blink synchronization or TSSOP10 footprint is mandatory. |
| IS31FL3728-QFLS4-TR | 28-channel, I²C, 8-bit PWM, integrated current regulation, 0.5 % channel matching; no hardware address pins; 2.7–5.5 V. | Optimized for matrix LED layouts (e.g., wearables), not discrete RGBA; no group blink frequency programming (fixed 24 Hz). | Choose for high-channel-count, precision-current applications; not suitable for hardware-addressed multi-device bus topologies or variable blink period control. |
Compared with TLC59116IPWPR and IS31FL3728-QFLS4-TR, the PCA9633DP2,118 uniquely balances 4-channel RGBA control, hardware-addressed scalability, and fully programmable group blink timing - making it optimal for compact, multi-device status and backlight systems where deterministic I²C addressing and synchronized visual effects are essential.
Availability
PCA9633DP2,118 is available at Aetrix Electronics and suitable for RGB status indicators, keypad backlights, and small-screen LCD backlights requiring stable component supply, long-term industrial availability, and RoHS-compliant packaging.
Supply support for PCA9633DP2,118 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 PCA9633 family was designed specifically for efficient, scalable LED control in space-constrained portable and industrial interfaces - emphasizing hardware-address flexibility, flicker-free PWM, and seamless I²C bus interoperability.
FAQ
What is the I²C slave address configuration for PCA9633DP2,118?
The PCA9633DP2,118 uses a 7-bit hardware-configurable I²C address with two address pins (A0, A1) on pins 5 and 7. It supports four fixed addresses: 1100000 (0x60), 1100001 (0x61), 1100010 (0x62), and 1100011 (0x63). No internal pull-ups exist on A0/A1; external resistors must set logic levels. The PCA9633DP2,118 does not support software-programmable base addresses like the 16-pin version.
Does PCA9633DP2,118 support group blinking with adjustable frequency?
Yes, the PCA9633DP2,118 supports group blinking with fully programmable frequency from 24 Hz to once every 10.73 seconds (≈0.093 Hz) via the GRPFREQ register (0x07), paired with adjustable duty cycle (0–99.6%) in GRPPWM (0x06). This feature operates only when the DMBLNK bit (MODE2, bit 5) is set to '1'. The PCA9633DP2,118 implements this using its internal 25 MHz oscillator - no external components required.
Can PCA9633DP2,118 drive LEDs directly without external transistors?
Yes, the PCA9633DP2,118 can drive standard LEDs directly: its outputs support 25 mA sink capability at 5 V in both totem-pole and open-drain modes. With 5.5 V-tolerant outputs and 2.3–5.5 V supply range, it interfaces natively with 3.3 V or 5 V microcontrollers and powers common 20 mA indicator LEDs. For higher-current or high-voltage LEDs, external drivers remain supported via open-drain configuration.
How does PCA9633DP2,118 handle power-up behavior and reset?
On power-up, the PCA9633DP2,118 performs an internal power-on reset (POR), initializing all registers to default states: outputs HIGH (LEDs off), MODE1 ALLCALL enabled, MODE2 OUTDRV = 1 (totem-pole), and GRPPWM = 0xFF (full brightness). A software reset is also available via I²C address 0x06 (R/W = 0), which replicates POR behavior - restoring all registers identically without cycling VDD. This ensures deterministic startup in battery-powered or hot-plug systems.
Is the PCA9633DP2,118 pin-compatible with other PCA9633 variants?
No, the PCA9633DP2,118 (TSSOP10) is not pin-compatible with the 8-pin (PCA9633DP1) or 16-pin (PCA9633PW, PCA9633D16) variants. Key differences include absence of OE pin (16-pin only), fewer address pins (2 vs. 0 or 7), and distinct pin mapping (e.g., A0/A1 occupy pins 5/7 in TSSOP10 but pins 1/2 in SO16). PCB layout must be specific to SOT552-1 footprint; migration requires schematic and layout revision.
PCA9633DP2,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Power Switch
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 25mA
- Frequency:
- -
- Dimming:
- I2C
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TSSOP
PCA9633DP2,118 FAQ
1.How can I place an order for PCA9633DP2,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9633DP2,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCA9633DP2,118 reliable?
The price and inventory of PCA9633DP2,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9633DP2,118 is usually 5 days.
3.What payment methods are accepted for PCA9633DP2,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9633DP2,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9633DP2,118?
PCA9633DP2,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9633DP2,118 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCA9633DP2,118?
For technical support, including PCA9633DP2,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9633DP2,118 requirements.
6.How does Aetrix verify that PCA9633DP2,118 is sourced from the original manufacturer or authorized distributors?
All PCA9633DP2,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCA9633DP2,118 meets industry standards.
7.What is the process for return or replacement of PCA9633DP2,118?
All PCA9633DP2,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9633DP2,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCA9633DP2,118 part is unused and in its original packaging.
Return procedure for PCA9633DP2,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9633DP2,118 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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