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NXP Semiconductors PCA9952TW/Q900,118
- Part No.:
- PCA9952TW/Q900,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
PCA9952TW/Q900,118.pdf
- Description:
- IC LED DRV LIN PWM 57MA 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:15,881
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Product details
Overview
PCA9952TW/Q900,118 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 automotive and amusement applications. 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/Q900,118 datasheet, PCA9952TW/Q900,118 pinout, PCA9952TW/Q900,118 application, or PCA9952TW/Q900,118 equivalent, key selection criteria include its AEC-Q100 qualification, active-low OE pin for hardware-synchronized blinking, HTSSOP28 thermal-enhanced package, and integrated open/short/overtemperature fault detection readable via I²C.
Technical Context
The PCA9952TW/Q900,118 implements dual-layer PWM control: 16 independent 8-bit channels at 31.25 kHz for per-LED brightness, plus one shared 8-bit group controller supporting either 122 Hz dimming or programmable blink frequency (15 Hz to once every 16.8 seconds). Its internal 8 MHz oscillator eliminates external timing components.
It features three hardware address pins (A0–A2), an active-low Output Enable (OE) pin for external hardware blinking, and built-in error detection circuitry reporting open/short load and overtemperature conditions through dedicated I²C registers (EFLAG0/EFLAG1). The device uses an external REXT resistor to set output current from 225 µA to 57 mA with ±6% inter-channel accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Channels | 16 constant-current sink outputs, each programmable for off/on/PWM/brightness+group control |
| Max Output Current | 57 mA per channel, adjustable via external REXT resistor (225 µA to 57 mA range) |
| PWM Frequency | Individual: fixed 31.25 kHz; Group: fixed 122 Hz or programmable 15 Hz to 16.8 s period |
| I²C Interface | Fm+ compatible, up to 1 MHz; 30 mA SDA drive strength for high-capacitance buses |
| Supply Range | VDD = 3.0 V to 5.5 V; LED supply tolerant up to 40 V when outputs are OFF |
| Operating Temp | −40 °C to +85 °C; AEC-Q100 qualified for automotive use |
| Package | HTSSOP28 (SOT1172-2) with exposed thermal pad; 0.65 mm pitch, 4.4 mm body width |
Pinout & Package
PCA9952TW/Q900,118 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 1 is REXT, pin 5 is active-low OE, and pins 6–9 and 11–23 are LED driver outputs (LED0–LED15).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REXT (1) | Current-setting reference input | Connects to ground via external resistor to program full-scale output current (225 µA–57 mA) |
| A0–A2 (2–4) | Hardware I²C address inputs | Set 3-bit slave address; enable up to 8 devices on same bus (no internal pull-ups) |
| OE (5) | Active-low output enable | Hardware blink/dim control: forces all LEDn outputs ON/OFF synchronously; unique to PCA9952 |
| LED0–LED15 (6–9, 11–23) | Constant-current LED sink outputs | Each drives one LED anode; tolerate 40 V when OFF; support individual/group PWM mixing |
| RESET (25) | Active-low reset input | Asynchronous hardware reset; initializes all registers to default state (LEDs OFF) |
| SCL/SDA (26/27) | I²C serial clock/data | Fm+ interface (up to 1 MHz); SDA has 30 mA drive capability for >4000 pF bus loads |
| VDD (28), VSS (10,19,24) | Power and ground | VDD: 3.0–5.5 V supply; VSS pins and exposed pad must be connected to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel 8-bit PWM | 31.25 kHz fixed frequency enables flicker-free dimming with 256 brightness steps per LED |
| Group PWM with programmable blink | 122 Hz dimming or 15 Hz–16.8 s blink period allows synchronized visual effects across all 16 LEDs |
| Hardware Output Enable (OE) | Active-low OE pin enables external microcontroller or timer to globally blink all LEDs without I²C traffic |
| Integrated fault detection | Detects open-circuit, short-circuit, and overtemperature conditions per channel; status readable via EFLAG0/EFLAG1 registers |
| Software Reset (SWRST) | I²C command resets all registers to power-on defaults-identical behavior to hardware RESET pin |
| Multi-device addressing | Three programmable Sub Call addresses (ECh default) and one All Call address (E0h) enable grouped control of mixed-channel LED drivers |
Applications
| Automotive Interior Lighting | Amusement Machine UI |
|---|---|
|
Use Scenario: RGB ambient lighting in instrument clusters, door panels, and center consoles with dynamic color transitions. IC Role / Device Role / Timing Role: Constant-current LED driver providing synchronized dimming/blinking across 16 zones using group PWM and individual brightness registers. Use Value: AEC-Q100 qualification ensures reliability under automotive temperature and vibration stress; OE pin enables hardware-triggered emergency blink patterns without MCU intervention. |
Use Scenario: Animated LED signage, prize indicators, and interactive game elements in arcade cabinets and slot machines. IC Role / Device Role / Timing Role: 16-channel RGBA driver enabling marquee chasing, strobing, and intensity ramping via I²C-subaddress grouping. Use Value: 31.25 kHz individual PWM eliminates visible flicker; programmable 15 Hz–16.8 s group blink supports attention-grabbing animations without software overhead. |
| Industrial HMI Panels | RGB Status Indicators |
|
Use Scenario: Multi-color status feedback on factory HMIs, where LED states reflect machine mode, fault, or process stage. IC Role / Device Role / Timing Role: LED driver with open/short load detection feeding real-time fault status back to host controller via I²C. Use Value: Integrated error detection reduces need for external sensing; thermal shutdown protects against sustained overcurrent in enclosed enclosures. |
Use Scenario: Compact multi-function status lights on networking gear, medical devices, or test equipment requiring precise color-coded alerts. IC Role / Device Role / Timing Role: Low-pin-count 16-channel driver replacing discrete transistor arrays while supporting per-LED brightness calibration. Use Value: ±6% inter-channel current matching ensures consistent color balance across RGB LEDs; 5.5 V-tolerant logic inputs simplify level-shifting with 3.3 V MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9955TW/Q900,118 | No OE pin; four hardware address pins (A0–A3) vs. three (A0–A2) on PCA9952; identical PWM, fault detection, and package | Better suited for dense I²C buses requiring >8 devices; lacks hardware blink synchronization | Select PCA9955TW/Q900,118 when higher bus node count is needed and OE functionality is unnecessary |
| TLC5940IPWPR | 16-channel, 12-bit PWM (4096 steps), no group PWM, no OE pin, 30 MHz SPI interface, not AEC-Q100 qualified | Higher resolution for precision lighting; requires SPI master; unsuitable for automotive temperature or safety-critical systems | Choose TLC5940IPWPR only for non-automotive applications needing finer grayscale control and SPI-native architecture |
Compared with PCA9955TW/Q900,118 and TLC5940IPWPR, the PCA9952TW/Q900,118 uniquely combines AEC-Q100 compliance, hardware OE synchronization, and 3-pin address scalability-making it optimal for automotive interior lighting and safety-aware amusement systems where deterministic blink timing and qualification are mandatory.
Availability
PCA9952TW/Q900,118 is available at Aetrix Electronics and suitable for automotive interior lighting, amusement machine UIs, industrial HMI panels, and RGB status indicators requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for PCA9952TW/Q900,118 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 mixed-signal ICs and automotive-grade reliability.
The PCA9952 belongs to NXP's LED driver product line designed specifically for high-reliability, multi-channel RGBA lighting in automotive cabins and entertainment systems-emphasizing fault resilience, thermal robustness, and I²C efficiency.
FAQ
What is the function of the OE pin on the PCA9952TW/Q900,118?
The OE (Output Enable) pin on the PCA9952TW/Q900,118 is an active-low input that globally enables or disables all 16 LED outputs. When asserted low, it forces all LEDn drivers into a synchronized ON/OFF state-enabling hardware-triggered blinking without I²C communication. This feature is exclusive to the PCA9952TW/Q900,118 and absent in the PCA9955 variant. It simplifies emergency signaling and reduces MCU firmware complexity in time-critical lighting sequences.
How does the PCA9952TW/Q900,118 achieve AEC-Q100 qualification?
The PCA9952TW/Q900,118 achieves AEC-Q100 qualification through rigorous testing across temperature cycling (−40 °C to +105 °C junction), ESD (≥2000 V HBM), latch-up (JEDEC JESD78 Class II), and lifetime reliability under automotive operating conditions. Its HTSSOP28 package with exposed thermal pad, internal thermal shutdown, and fault-detection circuitry ensure robustness in vehicle environments. The "/Q900" suffix explicitly denotes AEC-Q100 Grade 2 compliance (−40 °C to +105 °C).
Can the PCA9952TW/Q900,118 drive LEDs with different forward voltages simultaneously?
Yes-the PCA9952TW/Q900,118 can drive LEDs with varying forward voltages simultaneously because each of its 16 outputs is a constant-current sink with 40 V tolerance when OFF. As long as the LED string anodes are supplied from a common rail ≤40 V and the current-setting REXT is selected for the highest required current (≤57 mA), mixed-color (e.g., red, green, blue, amber) LEDs operate independently without cross-talk. Individual PWM control further enables precise luminance balancing.
What is the purpose of the REXT pin on the PCA9952TW/Q900,118?
The REXT pin on the PCA9952TW/Q900,118 connects to an external resistor tied to ground, setting the full-scale output current for all 16 channels. Using the formula IOUT = 10.7 mA × (24.7 kΩ / REXT), designers select REXT to achieve currents from 225 µA to 57 mA. This single-point calibration ensures ±6% matching between channels and ±8% matching across devices-critical for uniform color rendering in RGBA systems.
How does the PCA9952TW/Q900,118 handle LED fault detection?
The PCA9952TW/Q900,118 integrates per-channel open-load, short-load, and overtemperature detection. Fault status is latched in two read-only registers: EFLAG0 (bits 0–7 for LED0–LED7) and EFLAG1 (bits 0–7 for LED8–LED15). Each bit indicates failure condition; reading these registers via I²C allows the host MCU to isolate faulty LEDs without external circuitry. Clearing faults requires a software or hardware reset-ensuring persistent error visibility until addressed.
PCA9952TW/Q900,118 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:
- Active
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
PCA9952TW/Q900,118 FAQ
1.How can I place an order for PCA9952TW/Q900,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9952TW/Q900,118 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/Q900,118 reliable?
The price and inventory of PCA9952TW/Q900,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9952TW/Q900,118 is usually 5 days.
3.What payment methods are accepted for PCA9952TW/Q900,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9952TW/Q900,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9952TW/Q900,118?
PCA9952TW/Q900,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9952TW/Q900,118 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/Q900,118?
For technical support, including PCA9952TW/Q900,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9952TW/Q900,118 requirements.
6.How does Aetrix verify that PCA9952TW/Q900,118 is sourced from the original manufacturer or authorized distributors?
All PCA9952TW/Q900,118 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/Q900,118 meets industry standards.
7.What is the process for return or replacement of PCA9952TW/Q900,118?
All PCA9952TW/Q900,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9952TW/Q900,118, 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/Q900,118 part is unused and in its original packaging.
Return procedure for PCA9952TW/Q900,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9952TW/Q900,118 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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