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NXP Semiconductors PCA9633TK,118
- Part No.:
- PCA9633TK,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
PCA9633TK,118.pdf
- Description:
- IC LED DRIVER PS PWM 25MA 8HVSON
- Quantity:
- Payment:
- Shipping:
Inventory:20,680
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Product details
Overview
The PCA9633TK,118 from NXP Semiconductors is a 4-bit Fast-mode Plus (Fm+) I²C-bus LED driver optimized for RGBA color mixing, featuring four independent 8-bit PWM channels (97 kHz, 0–99.6% duty cycle), one group PWM controller (190 Hz fixed or 24 Hz–10.73 s programmable), 2.3 V–5.5 V supply range, and HVSON8 package with 8-pin thermal-enhanced layout. It enables precise brightness control in compact handheld displays.
For engineers reviewing the PCA9633TK,118 datasheet, PCA9633TK,118 pinout, PCA9633TK,118 application, or PCA9633TK,118 equivalent, key selection criteria include I²C address configuration (fixed 8-pin version), open-drain/totem-pole output mode selection, group dimming vs. blinking mode (DMBLNK bit), output enable absence (OE not present in HVSON8), and thermal performance of the 3 × 3 × 0.85 mm HVSON package.
Technical Context
The PCA9633TK,118 implements a dual-layer PWM architecture: individual 97 kHz PWM per LED channel (256-step linear resolution) overlays a separately configurable group PWM (190 Hz fixed or 24 Hz–10.73 s programmable) to enable synchronized dimming or blinking across all four outputs. Its Fm+ interface supports up to 1 MHz clock rate with 30 mA SDA drive strength for high-capacitance buses.
LED output state is controlled via the 2-bit LDRx field in the LEDOUT register (00=off, 01=on, 10=individual PWM only, 11=individual + group PWM), while output driver type (totem-pole default or open-drain) is set by the OUTDRV bit in MODE2. No hardware address pins are present - the 8-pin variant uses a fixed I²C slave address (1100010x).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fast-mode Plus (Fm+), up to 1 MHz; no address pins - fixed slave address 0xC4 (write) / 0xC5 (read) |
| LED Channels | 4 independent outputs (LED0–LED3); each supports 256-step (8-bit) individual PWM at 97 kHz |
| Group Control | Single 256-step GRPPWM register; 190 Hz fixed dimming or 24 Hz–10.73 s programmable blinking via GRPFREQ |
| Output Drive | Totem-pole default (25 mA sink / 10 mA source @ 5 V); software-selectable open-drain (25 mA sink @ 5 V) |
| Supply Range | 2.3 V to 5.5 V; inputs tolerant to 5.5 V; operates from −40 °C to +85 °C |
| Package | HVSON8 (SOT908-1): 3 mm × 3 mm × 0.85 mm, exposed pad for thermal dissipation |
| Reset & Control | Software Reset (SWRST) via I²C address 0x06; internal 25 MHz oscillator; no external components required |
Pinout & Package
HVSON8 package (SOT908-1) with 3 mm × 3 mm footprint, 0.5 mm pitch, and thermally enhanced exposed die pad. Pin 1 index located at top-left corner (counterclockwise numbering). Exposed pad must be soldered to PCB thermal plane for reliable operation under sustained 25 mA per channel load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (LED0) | LED driver output 0 | Drives red/amber LED anode via external current-limiting resistor; supports individual + group PWM when LDR0 = 11b |
| 2 (LED1) | LED driver output 1 | Drives green LED anode; identical control logic and timing as LED0 |
| 3 (LED2) | LED driver output 2 | Drives blue LED anode; fully independent 8-bit PWM register (PWM2) |
| 4 (LED3) | LED driver output 3 | Drives fourth RGBA channel; shares group PWM but has dedicated brightness register (PWM3) |
| 5 (VSS) | Ground reference | Primary supply return; must connect to low-impedance ground plane; ties to exposed thermal pad |
| 6 (SCL) | I²C clock input | Accepts up to 1 MHz Fm+ clock; internal noise filter suppresses glitches |
| 7 (SDA) | I²C bidirectional data | 30 mA push-pull drive capability; supports bus capacitance up to 4000 pF |
| 8 (VDD) | Power supply input | 2.3–5.5 V supply; powers internal oscillator, logic, and output drivers; decoupling capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| RGBA color mixing support | Four independent 8-bit PWM channels enable precise 24-bit color depth control for RGB + amber status indication |
| Group dimming/blinking synchronization | Single GRPPWM/GRPFREQ register allows simultaneous brightness scaling or coordinated blink timing across all 4 LEDs |
| Fm+ I²C bus compatibility | 1 MHz operation with 30 mA SDA drive ensures robust communication on dense, high-capacitance PCB layouts |
| Flexible output configuration | Software-selectable totem-pole (bidirectional) or open-drain (sink-only) mode accommodates standard and Zener-protected LEDs |
| No external timing components | Integrated 25 MHz oscillator eliminates need for crystal or RC network - reduces BOM count and board area |
Applications
| Keypad Backlighting | LED Status Indicators |
|---|---|
Use Scenario: Backlighting alphanumeric keypads in cellular phones and portable medical devices where space and power efficiency are critical. IC Role / Device Role / Timing Role: PCA9633TK,118 drives four discrete LEDs (e.g., R/G/B/A) behind keypad segments using individual PWM registers to achieve uniform luminance and smooth fade transitions. Use Value: Enables dynamic color-coded feedback (e.g., red for error, green for ready) without MCU GPIO overhead or external PWM timers. | Use Scenario: Real-time system status reporting on industrial HMI panels with multi-color LED arrays. IC Role / Device Role / Timing Role: PCA9633TK,118 acts as a dedicated LED controller, accepting I²C commands from host MCU to update brightness and blink patterns independently per channel. Use Value: Reduces firmware complexity by offloading time-critical PWM generation; group blinking (via GRPPWM/GRPFREQ) signals alarms across all indicators simultaneously. |
| Compact LCD Backlights | RGB LED Displays |
Use Scenario: Edge-lit monochrome or segmented LCDs in wearables and IoT sensors requiring minimal thickness and low quiescent current. IC Role / Device Role / Timing Role: PCA9633TK,118 supplies regulated current to white or RGB backlight LEDs using totem-pole outputs and fixed 97 kHz PWM to eliminate visible flicker. Use Value: Achieves >1000:1 dimming range (0–99.6%) with no audible coil whine - critical for quiet environments. | Use Scenario: Small-format RGB signage or status matrices in network equipment front panels. IC Role / Device Role / Timing Role: PCA9633TK,118 serves as pixel-level intensity controller, mapping MCU-generated color values to individual PWM0–PWM3 registers for accurate hue reproduction. Use Value: Supports smooth color transitions via auto-increment register writes (AI[2:0]=101), minimizing I²C transaction count during animation sequences. |
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, 12-bit PWM; I²C address pins (A0–A2); no group blink control; requires external oscillator | Higher channel count and resolution suited for larger LED arrays; lacks GRPFREQ programmability for long-period blinking | Select when >4 channels or >256-step resolution is required; avoid if group-synchronized blinking beyond 190 Hz is needed. |
| IS31FL3728-QFLS4-TR | 28-channel, matrix-addressed; built-in breathing effect engine; 2.7–5.5 V; QFN24 package | Designed for LED matrices with scan-line control; includes hardware-based fade effects not available in PCA9633TK,118 | Choose for complex lighting animations on multi-row displays; PCA9633TK,118 remains optimal for discrete RGBA point-source control. |
Compared with TLC59116IPWPR and IS31FL3728-QFLS4-TR, the PCA9633TK,118 delivers optimal balance of compact size (HVSON8), integrated oscillator, and dual-layer PWM for cost-sensitive RGBA applications - especially where fixed 8-pin simplicity and 10.73 s maximum blink period are design requirements.
Availability
The PCA9633TK,118 is available at Aetrix Electronics and suitable for keypad backlights, LED status indicators, and compact LCD backlights requiring stable component supply, consistent thermal performance, and long-term industrial lifecycle support.
Supply support for PCA9633TK,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 broad analog, power, and interface IC portfolios.
The PCA9633TK,118 belongs to NXP's Fm+ I²C LED driver family, designed specifically for space-constrained, low-power RGBA color mixing in portable and human-interface devices.
FAQ
What is the I²C slave address of the PCA9633TK,118?
The PCA9633TK,118 uses a fixed 7-bit I²C slave address of 1100010 (0x62), resulting in write address 0xC4 and read address 0xC5. Unlike 10-pin or 16-pin variants, it has no address pins - this address is hardwired and non-programmable per the HVSON8 configuration.
Does the PCA9633TK,118 support the Output Enable (OE) pin?
No, the PCA9633TK,118 does not include an Output Enable (OE) pin. OE is only available on the 16-pin versions (e.g., PCA9633PW, PCA9633D16). The HVSON8 package omits this pin entirely - LED output states are controlled solely via I²C registers and power sequencing.
Can the PCA9633TK,118 drive LEDs directly without external current-limiting resistors?
No, the PCA9633TK,118 requires external current-limiting resistors for each LED channel. Its outputs are voltage sources (totem-pole) or current sinks (open-drain), not constant-current drivers. Resistor value must be selected based on forward voltage, desired current (≤25 mA), and VDD to ensure safe operation and thermal stability.
How is group blinking configured on the PCA9633TK,118?
Group blinking on the PCA9633TK,118 is enabled by setting the DMBLNK bit (bit 5) in the MODE2 register to '1'. Then, GRPPWM sets the ON/OFF duty cycle (0–99.6%), and GRPFREQ sets the full blink period (24 Hz to 10.73 s). All four LEDs blink synchronously when their LEDOUT bits are set to '11'.
What is the function of the GRPFREQ register in the PCA9633TK,118?
The GRPFREQ register (address 0x07) defines the total period of group blinking when DMBLNK = 1. Its 8-bit value maps linearly to blink intervals: 0x00 = 41 ms (24 Hz), 0xFF = 10.73 s. This register has no effect during group dimming (DMBLNK = 0), where GRPPWM alone controls brightness level.
PCA9633TK,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 8-HVSON (3x3)
PCA9633TK,118 FAQ
1.How can I place an order for PCA9633TK,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9633TK,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 PCA9633TK,118 reliable?
The price and inventory of PCA9633TK,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9633TK,118 is usually 5 days.
3.What payment methods are accepted for PCA9633TK,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9633TK,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9633TK,118?
PCA9633TK,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9633TK,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 PCA9633TK,118?
For technical support, including PCA9633TK,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9633TK,118 requirements.
6.How does Aetrix verify that PCA9633TK,118 is sourced from the original manufacturer or authorized distributors?
All PCA9633TK,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 PCA9633TK,118 meets industry standards.
7.What is the process for return or replacement of PCA9633TK,118?
All PCA9633TK,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9633TK,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 PCA9633TK,118 part is unused and in its original packaging.
Return procedure for PCA9633TK,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9633TK,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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