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NXP Semiconductors PCA9952TW,118
- Part No.:
- PCA9952TW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
PCA9952TW,118.pdf
- Description:
- IC LED DRV LIN PWM 57MA 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
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Product details
Overview
PCA9952TW,118 from NXP Semiconductors is a 16-channel Fast-mode Plus (Fm+) I²C-bus constant current LED driver optimized for RGBA LED dimming and blinking in amusement products. It delivers up to 57 mA per channel with 8-bit individual PWM (31.25 kHz) and group PWM (122 Hz fixed or 15 Hz–16.8 s programmable), operates from 3 V to 5.5 V, and supports 40 V LED supply voltage.
For engineers reviewing the PCA9952TW,118 datasheet, PCA9952TW,118 pinout, PCA9952TW,118 application, or PCA9952TW,118 equivalent, key selection criteria include hardware address pin count (3 pins → 8-device bus limit), active-low Output Enable (OE) for synchronized hardware blinking, open/short/overtemperature fault detection, and AEC-Q100-compliant HTSSOP28 packaging for automotive lighting systems.
Technical Context
The PCA9952TW,118 integrates an 8 MHz internal oscillator (no external components required), dual PWM architecture-individual 256-step brightness control at 31.25 kHz and group-level 256-step dimming/blinking with frequency programmability-and a dedicated OE pin enabling external hardware-level synchronization across multiple devices. Its I²C interface supports 1 MHz Fm+ operation with 30 mA SDA drive strength for high-capacitance buses.
Each of the 16 constant-current sink outputs is independently configurable via LEDOUT registers to be OFF, ON, individually PWM-controlled, or combined with group PWM. Current is set by an external REXT resistor, yielding ±6% channel-to-channel accuracy and ±8% device-to-device accuracy across the 225 μA–57 mA range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Channels | 16 independent constant-current sink outputs, each programmable for off/on/PWM/group control |
| Max Output Current | 57 mA per channel, adjustable via external REXT resistor (225 μA–57 mA range) |
| Individual PWM | 8-bit resolution (256 steps), 31.25 kHz fixed frequency, 0–99.6% duty cycle |
| Group PWM | 8-bit resolution, 122 Hz fixed or 15 Hz–16.8 s programmable frequency, 0–99.6% duty cycle |
| I²C Interface | Fast-mode Plus (Fm+), up to 1 MHz, 30 mA SDA drive capability, noise-filtered SDA/SCL inputs |
| Supply Range | VDD = 3.0 V to 5.5 V; LED supply tolerance up to 40 V (when output is OFF) |
| Operating Temp | −40 °C to +85 °C; AEC-Q100 qualified (automotive grade) |
Pinout & Package
PCA9952TW,118 is housed in a thermally enhanced HTSSOP28 package (SOT1172-2) with 28 leads, 0.65 mm pitch, 4.4 mm body width, and an exposed die pad connected to VSS for improved thermal dissipation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| REXT (1) | Current reference input | Connects external resistor to ground to set full-scale output current (225 μA–57 mA) |
| A0–A2 (2–4) | Hardware address inputs | 3-bit address selection enabling up to 8 PCA9952 devices on same I²C bus |
| OE (5) | Active-low output enable | Hardware blink/dim control; overrides all LED states when asserted (unique to PCA9952) |
| LED0–LED15 (6–9, 11–18, 20–23) | Constant-current LED sink outputs | 16 channels, each capable of sinking up to 57 mA; tolerate 40 V when OFF |
| RESET (25) | Active-low reset input | Asynchronous hardware reset; initializes registers to power-on defaults (outputs OFF) |
| SCL/SDA (26/27) | I²C clock/data lines | Fm+ compatible (up to 1 MHz); SDA has 30 mA drive strength for high-capacitance buses |
| VDD (28), VSS (10,19,24) | Power and ground | VDD: 3.0–5.5 V supply; VSS pins and exposed thermal pad must be connected to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Output Enable (OE) | Active-low pin enables synchronized hardware blinking/dimming across multiple PCA9952 devices without software intervention |
| Multi-level I²C addressing | Supports All Call (E0h), three Sub Call addresses (ECh default), and 3-pin hardware addressing - enables grouped control of RGB/RGBA LEDs or marquee effects |
| Integrated fault detection | Detects open-circuit, short-circuit, and overtemperature conditions per channel; error flags readable via I²C (EFLAG0/EFLAG1 registers) |
| Thermal shutdown protection | Automatically disables outputs when junction temperature exceeds safe limit; prevents permanent damage during sustained overload or poor heatsinking |
| EMI-reduced output enable delay | Programmable LEDn output enable delay (via OFFSET register) minimizes inrush current and conducted EMI at turn-on |
Applications
| Amusement Lighting Control | Automotive Interior Lighting |
|---|---|
|
Use Scenario: Dynamic color sequencing and synchronized blinking in arcade cabinets, prize wheels, and interactive kiosks. IC Role / Device Role / Timing Role: 16-channel constant-current sink driving RGBA LEDs with independent brightness and group blink control. Use Value: Enables precise, flicker-free visual effects using hardware OE pin for frame-aligned blinking - eliminating MCU timing overhead and jitter. |
Use Scenario: Ambient lighting, door courtesy lights, and dashboard backlighting in vehicles requiring AEC-Q100 compliance. IC Role / Device Role / Timing Role: Automotive-grade LED driver providing robust fault detection and thermal protection under wide temperature and voltage variation. Use Value: Built-in open/short/overtemperature detection reduces need for external monitoring circuitry; HTSSOP28 thermal pad ensures stable operation at 85 °C ambient. |
| RGB Status Indication | Industrial HMI Backlighting |
|
Use Scenario: Multi-color status indicators on industrial PLCs, medical devices, and test equipment with real-time state feedback. IC Role / Device Role / Timing Role: Individual 8-bit PWM per channel enables smooth color mixing and intensity gradation for accurate status encoding. Use Value: 31.25 kHz individual PWM eliminates visible flicker; group PWM allows unified dimming during low-power modes without reprogramming all channels. |
Use Scenario: Keypad and display backlighting in factory-floor HMIs exposed to vibration, ESD, and wide operating temperatures. IC Role / Device Role / Timing Role: Constant-current driver with 5.5 V-tolerant logic inputs and 2000 V HBM ESD protection for harsh environments. Use Value: Noise-filtered SDA/SCL inputs and 30 mA SDA drive ensure reliable I²C communication in electrically noisy industrial settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9955TW/Q900 | 4 hardware address pins (vs. 3), no OE pin; identical LED driver core, registers, and performance | Larger bus scalability (16 vs. 8 devices); lacks hardware blink sync - requires software coordination for multi-device blinking | Select PCA9955TW/Q900 when bus density >8 devices is required and OE functionality is unnecessary |
| TLC5940QPWPRQ1 | 16-channel, 12-bit PWM (4096 steps), 30 MHz SPI interface, no built-in fault detection or OE pin | Higher grayscale resolution for precision displays; requires external microcontroller for SPI control and fault monitoring | Select TLC5940QPWPRQ1 when 12-bit grayscale fidelity is critical and system already includes SPI-based control infrastructure |
Compared with PCA9955TW/Q900, PCA9952TW,118 trades one address pin for OE functionality - enabling deterministic hardware blink synchronization ideal for amusement lighting. Versus TLC5940QPWPRQ1, it offers integrated diagnostics and I²C simplicity but lower PWM resolution and no SPI option.
Availability
PCA9952TW,118 is available at Aetrix Electronics and suitable for automotive interior lighting, amusement product illumination, and industrial HMI backlighting requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for PCA9952TW,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 mixed-signal IC design and automotive qualification.
The PCA9952TW,118 belongs to NXP's LED driver product line engineered for high-reliability, multi-channel constant-current control in visually demanding environments - particularly targeting amusement, automotive, and industrial human-machine interfaces.
FAQ
What is the function of the OE pin on PCA9952TW,118?
The OE (Output Enable) pin on PCA9952TW,118 is an active-low input that globally enables or disables all 16 LED outputs. When asserted (LOW), it forces all LEDn drivers into blink mode synchronized to the group PWM signal - enabling hardware-level, jitter-free blinking without CPU intervention. This feature is exclusive to PCA9952TW,118 and absent in PCA9955. The OE pin also supports external PWM dimming by applying a variable-duty-cycle signal.
How does PCA9952TW,118 achieve current accuracy across channels?
PCA9952TW,118 achieves ±6% current matching between its 16 output channels through matched internal DACs and current mirror circuitry, calibrated against a single external REXT resistor. Device-to-device accuracy is ±8%, verified across production lots. The REXT sets full-scale current from 225 μA to 57 mA linearly; no trimming or calibration is required in typical applications.
Can PCA9952TW,118 drive LEDs with supply voltages above 5.5 V?
Yes - PCA99952TW,118's LED sink outputs tolerate up to 40 V when turned OFF, allowing use with high-voltage LED strings powered by separate supplies (e.g., 12 V, 24 V, or 36 V rails). Only the VDD pin (3.0–5.5 V) powers the logic and analog circuitry; the LED anodes connect directly to the higher-voltage rail, while cathodes connect to LEDn pins.
What fault detection capabilities does PCA9952TW,118 provide?
PCA9952TW,118 integrates per-channel open-load, short-circuit, and overtemperature detection. Fault status is latched in EFLAG0 and EFLAG1 registers and accessible via I²C. Open/short detection operates during active output states; thermal monitoring triggers automatic shutdown if junction temperature exceeds safe limits. No external sensors or circuitry are needed.
Is PCA9952TW,118 compatible with standard I²C buses?
Yes - PCA9952TW,118 is backward-compatible with standard-mode (100 kHz) and fast-mode (400 kHz) I²C buses. Its Fast-mode Plus (Fm+) interface extends support to 1 MHz operation and bus capacitances up to 4000 pF, enabled by a 30 mA SDA driver. Standard pull-up resistors (e.g., 2.2 kΩ on 3.3 V bus) are sufficient; no level shifters or special termination is required.
PCA9952TW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 57mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
PCA9952TW,118 FAQ
1.How can I place an order for PCA9952TW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9952TW,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 PCA9952TW,118 reliable?
The price and inventory of PCA9952TW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9952TW,118 is usually 5 days.
3.What payment methods are accepted for PCA9952TW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9952TW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9952TW,118?
PCA9952TW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9952TW,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 PCA9952TW,118?
For technical support, including PCA9952TW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9952TW,118 requirements.
6.How does Aetrix verify that PCA9952TW,118 is sourced from the original manufacturer or authorized distributors?
All PCA9952TW,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 PCA9952TW,118 meets industry standards.
7.What is the process for return or replacement of PCA9952TW,118?
All PCA9952TW,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9952TW,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 PCA9952TW,118 part is unused and in its original packaging.
Return procedure for PCA9952TW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9952TW,118 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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