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NXP Semiconductors PCA9552PW,118
- Part No.:
- PCA9552PW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCA9552PW,118.pdf
- Description:
- IC LED DRVR PS I2C 25MA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
PCA9552PW,118 from NXP Semiconductors is a 16-bit I²C-bus LED driver with dual programmable blink rates (0.172–44 Hz), 25 mA per output sink capability, and GPIO expansion functionality. It operates from 2.3 V to 5.5 V, integrates an internal oscillator, and supports SMBus-compatible communication for embedded status indication and system monitoring applications.
For engineers reviewing the PCA9552PW,118 datasheet, PCA9552PW,118 pinout, PCA9552PW,118 application, or PCA9552PW,118 equivalent, this device delivers autonomous LED blinking without MCU timer overhead, reduces I²C bus traffic via single-command blink control, and enables flexible mixed-mode use of outputs as LEDs or GPIOs in space-constrained industrial and consumer designs.
Technical Context
The PCA9552PW,118 implements two independent PWM generators-BLINK0 and BLINK1-each configured via dedicated prescaler (PSC0/PSC1) and duty-cycle (PWM0/PWM1) registers. Its internal oscillator eliminates external timing components, and each of the 16 open-drain outputs is individually assignable to static ON/OFF, high-impedance (GPIO input), or either blink rate via LED selector registers (LS0–LS3).
I²C interface logic complies with SMBus electrical specifications, includes noise filtering on SCL/SDA, and supports standard (100 kHz) and fast-mode (400 kHz) clocking. Power-on reset and active-low hardware RESET initialize all registers to default states, ensuring deterministic startup behavior across temperature (−40 °C to +85 °C) and supply voltage (2.3–5.5 V) ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Blink Rate Range | 0.172 Hz to 44 Hz (5.82 s to 23 ms period); enables slow status indicators and rapid alert flashing in same device |
| Output Sink Current | 25 mA per LED output; supports direct drive of standard indicator LEDs without external drivers |
| Supply Voltage | 2.3 V to 5.5 V; interoperable with 3.3 V and 5 V logic domains and battery-powered systems |
| I²C Clock Frequency | 0–400 kHz; compatible with standard and fast-mode I²C buses for flexible host integration |
| Standby Current | 2.1–5.0 μA at 5.5 V; suitable for low-power always-on status lighting in energy-sensitive applications |
| ESD Protection | 2000 V HBM, 150 V MM, 1000 V CDM; robust against handling and board-level electrostatic discharge |
| Operating Temperature | −40 °C to +85 °C; qualified for industrial and automotive cabin environments |
Pinout & Package
TSSOP24 package: plastic thin shrink small outline, 24 leads, body width 4.4 mm (SOT355-1). Exposed pad not present; no thermal pad requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hardware address inputs | Set I²C slave address (3-bit selection → 8 possible addresses); must be externally pulled HIGH/LOW |
| LED0–LED15 | Open-drain LED driver outputs / GPIOs | Each configurable as LED sink (25 mA max), high-Z input, or PWM-controlled output; no external pull-up required for LED mode |
| SCL / SDA | I²C serial clock/data lines | SMBus-compatible bidirectional interface with integrated noise filters; require external pull-ups |
| RESET | Active-low hardware reset | Asynchronous initialization of all registers; requires external pull-up if unused |
| VDD / VSS | Power supply / ground | Single-supply operation; VSS is reference for all I/Os and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent blink engines | BLINK0 and BLINK1 each fully programmable for frequency and duty cycle-enables simultaneous distinct visual patterns (e.g., heartbeat + alert) |
| Integrated oscillator | No external crystal or RC network needed; eliminates BOM cost and layout area while ensuring stable blink timing |
| 16-bit GPIO expansion | Unused LED outputs function as configurable I/Os-supports mixed-signal board design without adding discrete I/O expanders |
| Hot insertion support | Robust power sequencing and reset behavior allows safe insertion into live I²C buses-critical for field-serviceable modules |
| Edge rate control | Controlled output slew minimizes EMI during LED switching-reduces need for external filtering in EMC-sensitive applications |
Applications
| Industrial HMI Panels | Network Equipment Status |
|---|---|
|
Use Scenario: Front-panel LED indicators on PLCs, HMIs, and gateway devices requiring reliable, low-maintenance status feedback. IC Role / Device Role / Timing Role: Autonomous LED controller managing power, fault, and communication activity lights without consuming MCU resources. Use Value: Reduces firmware complexity and I²C bus load by >90% compared to software-timed toggling; extends MCU timer availability for real-time tasks. |
Use Scenario: Rack-mounted switches, routers, and media converters needing multi-color, multi-rate status LEDs for port/link/activity. IC Role / Device Role / Timing Role: Dedicated blink engine driving per-port LEDs with independent rates (e.g., link = steady, activity = 2 Hz pulse). Use Value: Enables precise visual differentiation of 16+ ports using only one I²C address-no additional controllers or GPIOs required. |
| Consumer Audio Devices | Medical Diagnostic Instruments |
|
Use Scenario: LED ring or bar indicators on smart speakers, soundbars, and AV receivers showing volume, mute, and source status. IC Role / Device Role / Timing Role: Low-power LED driver with standby current <5 μA-preserves battery life in portable audio accessories. Use Value: Maintains consistent brightness and blink fidelity across 2.3–5.5 V supply range, eliminating need for LDO regulation in USB-powered designs. |
Use Scenario: Patient monitor front panels and diagnostic handhelds requiring fail-safe, clearly distinguishable alarm and operational status lights. IC Role / Device Role / Timing Role: Safety-critical LED controller with POR and hardware RESET-ensures known LED state after power cycling or brownout. Use Value: Meets IEC 60601-1 leakage and ESD requirements (2000 V HBM) without external protection circuitry. |
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 constant-current LED driver with I²C interface; no built-in blink engine-requires MCU to update PWM registers continuously | Lacks autonomous blink capability; suited for applications where brightness control dominates over timed patterns | Select when precise current-matched dimming is prioritized over autonomous blinking |
| IS31FL3728-QFLS4-TR | 28-channel matrix LED driver with internal oscillator and 8 programmable frame buffers; higher channel count but larger TQFN32 package | Supports complex animation sequences via frame buffering-overkill for simple on/off/blink use cases | Select when multi-frame LED animations or >16 outputs are required in same footprint class |
Compared with TLC59116IPWPR and IS31FL3728-QFLS4-TR, the PCA9552PW,118 uniquely balances autonomous dual-rate blinking, GPIO flexibility, and compact TSSOP24 packaging-making it optimal for cost-sensitive, resource-constrained designs where deterministic visual signaling is essential.
Availability
PCA9552PW,118 is available at Aetrix Electronics and suitable for industrial HMI panels, network equipment status indicators, and consumer audio device lighting requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for PCA9552PW,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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in I²C peripheral IP and mixed-signal interface ICs.
The PCA9552 product line targets embedded status indication systems requiring autonomous LED control with minimal host intervention-designed to reduce firmware overhead and improve system responsiveness in resource-constrained microcontroller environments.
FAQ
What is the maximum sink current per output on the PCA9552PW,118?
The PCA9552PW,118 supports up to 25 mA sink current per LED output (LED0–LED15), with a total package limit of 200 mA. This allows direct drive of standard 2–3 V indicator LEDs without external current-limiting transistors, simplifying PCB layout and reducing BOM count.
Does the PCA9552PW,118 require external components for its internal oscillator?
No-the PCA9552PW,118 integrates a fully functional internal oscillator that requires no external capacitors, resistors, or crystals. This eliminates timing component variation, improves board-level reliability, and reduces bill-of-materials cost compared to discrete oscillator-based LED drivers.
How many I²C addresses can be assigned to the PCA9552PW,118?
The PCA9552PW,118 provides three hardware address pins (A0, A1, A2), enabling eight unique I²C slave addresses (0x60–0x67) on a single bus. All address pins must be externally pulled HIGH or LOW-no internal pull-ups are provided, ensuring predictable address configuration.
Can unused LED outputs on the PCA9552PW,118 be used as general-purpose I/Os?
Yes-any LEDn output not configured for LED driving can be repurposed as a GPIO. When set to high-impedance mode (01 in LSx register), it functions as an input; when driven LOW or PWM-controlled, it acts as an open-drain output-supporting mixed-signal board design without adding discrete I/O expanders.
What is the operating voltage range for the PCA9552PW,118?
The PCA9552PW,118 operates from 2.3 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic domains. This wide supply range supports battery-powered portable devices, USB-powered peripherals, and legacy industrial systems-without requiring level-shifting circuitry.
PCA9552PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Power Switch
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 25mA
- Frequency:
- 400kHz
- Dimming:
- I2C
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
PCA9552PW,118 FAQ
1.How can I place an order for PCA9552PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9552PW,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 PCA9552PW,118 reliable?
The price and inventory of PCA9552PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9552PW,118 is usually 5 days.
3.What payment methods are accepted for PCA9552PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9552PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9552PW,118?
PCA9552PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9552PW,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 PCA9552PW,118?
For technical support, including PCA9552PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9552PW,118 requirements.
6.How does Aetrix verify that PCA9552PW,118 is sourced from the original manufacturer or authorized distributors?
All PCA9552PW,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 PCA9552PW,118 meets industry standards.
7.What is the process for return or replacement of PCA9552PW,118?
All PCA9552PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9552PW,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 PCA9552PW,118 part is unused and in its original packaging.
Return procedure for PCA9552PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9552PW,118 Tags
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