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NXP Semiconductors PCA9633PW,118
- Part No.:
- PCA9633PW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCA9633PW,118.pdf
- Description:
- IC LED DRVR PS PWM 25MA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,638
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Product details
Overview
The PCA9633PW,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), 2.3–5.5 V operation, and 5.5 V-tolerant outputs-used in keypad backlights, status indicators, and RGB displays.
For engineers reviewing the PCA9633PW,118 datasheet, PCA9633PW,118 pinout, PCA9633PW,118 application, or PCA9633PW,118 equivalent, this device supports hardware address configuration (7 pins), software-reset via I²C, LED group/sub-call addressing, OE-driven hardware dimming/blinking, and totem-pole or open-drain output mode selection-critical for multi-device synchronization and low-glitch LED control in space-constrained embedded UIs.
Technical Context
The PCA9633PW,118 implements dual-layer PWM control: individual 97 kHz PWM per LED (256-step linear brightness) combined with a group-level 190 Hz fixed or 24 Hz–10.73 s programmable PWM (256-step duty cycle), enabling simultaneous dimming and blinking across all four outputs. Its Fm+ interface operates up to 1 MHz with 30 mA SDA drive strength for high-capacitance buses.
It features a 25 MHz internal oscillator (no external components), noise-filtered SDA/SCL inputs, edge-rate-controlled outputs, and power-on reset. The 16-pin TSSOP package includes dedicated OE (active-low), seven hardware address pins (A0–A6), and configurable output logic polarity (INVRT bit) for direct or external-driver LED interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fm+ compliant, up to 1 MHz; enables dense bus loading (≤4000 pF) without external pull-up tuning |
| Individual PWM | 97 kHz fixed frequency, 256-step (0–99.6%) duty cycle per LED-ensures flicker-free brightness control at human-perceptible levels |
| Group PWM | 190 Hz fixed or 24 Hz–10.73 s programmable frequency, 256-step duty cycle-supports synchronized dimming or visible blinking across all LEDs |
| Output Drive | Totem-pole: 25 mA sink / 10 mA source at 5 V; open-drain: 25 mA sink at 5 V-selectable via MODE2 register for direct LED or external driver use |
| Supply Range | 2.3 V to 5.5 V; 5.5 V-tolerant inputs-enables interoperability with mixed-voltage systems and eliminates level-shifting for 3.3 V/5 V I²C hosts |
| Addressing | 7 hardware address pins (A0–A6) support up to 126 unique I²C addresses; plus LED All Call (E0h) and three Sub Call addresses (E2h/E4h/E8h) |
| Operating Temp | −40 °C to +85 °C-validated for industrial and consumer handheld environments including cellular phone keypads |
Pinout & Package
PCA9633PW,118 is housed in a 16-lead TSSOP package (SOT403-1), 4.4 mm body width, with exposed pad not present. Pin functions are validated per NXP datasheet Rev. 05 (2008), Table 4 and Figure 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A6 | Hardware I²C address inputs | Enable up to 126 unique slave addresses on shared bus; require external pull-up/down for deterministic startup |
| LED0–LED3 | LED driver outputs | Configurable as totem-pole (25 mA sink / 10 mA source) or open-drain (25 mA sink); directly drive ≤25 mA LEDs |
| OE | Active-low output enable | Asynchronously disables all outputs to defined state ('1', '0', or high-Z); enables hardware-synchronized dimming/blinking across multiple devices |
| SCL/SDA | I²C bus interface | Fm+ compliant (1 MHz max); SDA has 30 mA drive strength to maintain signal integrity on capacitive buses |
| VDD/VSS | Power supply terminals | Support 2.3–5.5 V operation; VSS must be connected to ground-exposed pad absent in TSSOP16 variant |
Key Features
| Feature | Design Value |
|---|---|
| Software Reset (SWRST) | Full register reset via I²C address 06h (R/W = 0), restoring all registers-including PWM, GRPPWM, and LEDOUT-to power-on defaults |
| LED Group/Sub Call Addressing | One All Call (E0h) + three Sub Call (E2h/E4h/E8h) addresses allow simultaneous control of arbitrary LED groups-e.g., all red LEDs across multiple PCA9633PW,118 units |
| Output Update Timing Control | Outputs change on STOP (default) or ACK command-enables atomic multi-register updates across devices for glitch-free color transitions |
| Output Logic Polarity | INVRT bit (MODE2) selects non-inverted (direct LED drive) or inverted (external driver compatibility) output logic-prevents misdrive with Zener-protected LEDs |
| Hot Insertion Support | No power-up glitches; outputs remain in high-impedance or defined state during supply ramp-safe for live bus insertion in modular systems |
Applications
| Keypad Backlighting | RGB Status Indicators |
|---|---|
Use Scenario: Backlighting alphanumeric keypads in cellular phones and handheld devices under varying ambient light conditions. IC Role / Device Role / Timing Role: PCA9633PW,118 drives four discrete LEDs (e.g., R/G/B/A) with independent 97 kHz PWM to deliver smooth, flicker-free brightness scaling and color blending. Use Value: Enables dynamic backlight intensity adjustment and animated effects (e.g., breathing, pulsing) using group PWM while preserving per-key color fidelity. |
Use Scenario: Real-time system status indication via multicolor LEDs on industrial HMI panels and network equipment front panels. IC Role / Device Role / Timing Role: PCA9633PW,118 acts as a synchronized LED controller, using All Call addressing to update status colors across multiple units simultaneously. Use Value: Eliminates I²C bus overhead by updating all status LEDs in one transaction-reducing host CPU load and ensuring visual consistency across distributed indicators. |
| LED Display Segments | Low-Power UI Lighting |
Use Scenario: Driving segmented LED displays in portable medical devices and test equipment where compact size and low EMI are critical. IC Role / Device Role / Timing Role: PCA9633PW,118 provides precise 8-bit brightness control per segment with edge-rate-controlled outputs to minimize radiated emissions. Use Value: Achieves high contrast and uniform luminance across segments without external current-setting resistors or timing-critical firmware loops. |
Use Scenario: Battery-powered consumer electronics requiring ultra-low standby current and rapid wake-up for LED feedback (e.g., smart remotes, wearables). IC Role / Device Role / Timing Role: PCA9633PW,118 enters sleep mode (oscillator off) via MODE1.SLEEP bit, drawing <1 µA while retaining register state. Use Value: Extends battery life without sacrificing responsiveness-full brightness restoration occurs within 500 µs after wake-up. |
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, 1.8–5.5 V supply; no group PWM or OE pin; I²C up to 400 kHz | Higher channel count and resolution but lacks synchronized blinking/dimming and hardware OE control | Select when >4 channels or >8-bit precision required; avoid when hardware-synchronized multi-device blinking is essential |
| IS31FL3728-QFLS4-TR | 28-channel, 8-bit PWM, 2.7–5.5 V; integrated current regulation; no hardware address pins or OE | Designed for matrix LED arrays with auto-refresh; no individual/group PWM hierarchy or I²C address flexibility | Select for high-density LED matrices; avoid when discrete RGBA control, address scalability, or OE-driven hardware sync is needed |
Compared with TLC59116IPWPR and IS31FL3728-QFLS4-TR, the PCA9633PW,118 uniquely combines 4-channel RGBA control, 7-pin hardware addressing, active-low OE for inter-device synchronization, and dual-layer (individual + group) PWM-making it optimal for compact, multi-unit UI lighting where deterministic timing and minimal I²C traffic are design priorities.
Availability
PCA9633PW,118 is available at Aetrix Electronics and suitable for keypad backlights, RGB status indicators, LED display segments, and low-power UI lighting requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for PCA9633PW,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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, power, and LED control ICs.
The PCA9633PW,118 belongs to NXP's Fast-mode Plus LED driver family, designed specifically for space-constrained, multi-device RGB/RGBA lighting systems requiring synchronized dimming, low-glitch operation, and robust I²C bus performance.
FAQ
What is the maximum I²C bus speed supported by the PCA9633PW,118?
The PCA9633PW,118 supports Fast-mode Plus (Fm+) I²C operation up to 1 MHz. Its SDA output delivers 30 mA drive strength, enabling reliable communication on buses with total capacitance up to 4000 pF-eliminating the need for external bus buffers in most multi-device configurations. This capability is intrinsic to the PCA9633PW,118 silicon design and verified per NXP datasheet Rev. 05.
How does the PCA9633PW,118 implement synchronized blinking across multiple devices?
The PCA9633PW,118 achieves synchronized blinking using its active-low Output Enable (OE) pin: applying a common external clock to OE pins of multiple PCA9633PW,118 units forces simultaneous on/off transitions. Alternatively, group PWM (GRPPWM/GRPFREQ registers) can be written via All Call addressing (E0h) to update blinking parameters atomically across all devices on the bus.
Can the PCA9633PW,118 drive LEDs directly without external transistors?
Yes-the PCA9633PW,118 supports direct LED drive in totem-pole mode (25 mA sink / 10 mA source at 5 V) or open-drain mode (25 mA sink). It tolerates 5.5 V on outputs, allowing connection of standard 20 mA LEDs with series resistors. For higher-current or high-voltage LEDs, external drivers are recommended per the PCA9633PW,118 application guidance.
What is the function of the A0–A6 pins on the PCA9633PW,118?
The A0–A6 pins on the PCA9633PW,118 are hardware-configurable I²C slave address inputs. With all seven pins, up to 126 unique addresses are possible (excluding reserved SWRST and All Call addresses). These pins must be externally pulled HIGH or LOW-no internal pull-ups exist-ensuring deterministic addressing at power-up without firmware initialization.
Does the PCA9633PW,118 include an internal oscillator?
Yes-the PCA9633PW,118 integrates a 25 MHz internal oscillator, eliminating the need for external timing components. This oscillator powers all PWM generators and I²C timing circuits. When the SLEEP bit in MODE1 is set, the oscillator stops to reduce current draw to <1 µA, and resumes within 500 µs upon wake-up-guaranteed timing behavior documented for the PCA9633PW,118.
PCA9633PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- 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:
- 16-TSSOP
PCA9633PW,118 FAQ
1.How can I place an order for PCA9633PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9633PW,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 PCA9633PW,118 reliable?
The price and inventory of PCA9633PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9633PW,118 is usually 5 days.
3.What payment methods are accepted for PCA9633PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9633PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9633PW,118?
PCA9633PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9633PW,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 PCA9633PW,118?
For technical support, including PCA9633PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9633PW,118 requirements.
6.How does Aetrix verify that PCA9633PW,118 is sourced from the original manufacturer or authorized distributors?
All PCA9633PW,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 PCA9633PW,118 meets industry standards.
7.What is the process for return or replacement of PCA9633PW,118?
All PCA9633PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9633PW,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 PCA9633PW,118 part is unused and in its original packaging.
Return procedure for PCA9633PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9633PW,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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