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NXP Semiconductors PCA9530D,118
- Part No.:
- PCA9530D,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PCA9530D,118.pdf
- Description:
- IC LED DRVR LINEAR I2C 25MA 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:12,472
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Product details
Overview
PCA9530D,118 from NXP Semiconductors is a 2-bit I²C-bus LED dimmer IC optimized for RGB color mixing and backlight control, featuring two independent PWM outputs with 256-step brightness resolution, internal oscillator (0.591–152 Hz blink rates), and 25 mA per output sink capability. It operates from 2.3 V to 5.5 V and supports SMBus-compatible communication.
For engineers reviewing the PCA9530D,118 datasheet, PCA9530D,118 pinout, PCA9530D,118 application, or PCA9530D,118 equivalent, this device delivers programmable dual-rate LED blinking without external timing components-critical for space-constrained display backlighting, status indicator systems, and low-power human interface designs requiring precise visual feedback.
Technical Context
The PCA9530D,118 integrates an on-chip oscillator driving two independent PWM channels (BLINK0/BLINK1), each configurable via 8-bit prescaler (PSC0/PSC1) and duty-cycle (PWM0/PWM1) registers. Blink period ranges from 6.58 ms to 1.69 s, with duty cycle resolution of 1/256.
Its I²C interface supports standard- and fast-mode (up to 400 kHz), includes noise filtering on SCL/SDA, active-low RESET, hardware address selection (A0), and Power-On Reset (POR) that initializes all outputs HIGH (LED off). Unused LEDn pins function as GPIOs with high-impedance, push-pull, or PWM-controlled modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | 2 open-drain LED drivers (LED0, LED1), each sinking up to 25 mA continuously |
| Blink frequency range | 0.591 Hz to 152 Hz (6.58 ms to 1.69 s period) - enables visible blinking or imperceptible dimming |
| Brightness resolution | 256 discrete steps (8-bit PWM register) - supports fine-grained RGB color calibration |
| Supply voltage | 2.3 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting |
| I²C speed | Up to 400 kHz (fast-mode) - reduces bus transaction time in multi-device systems |
| Standby current | 1.9 µA typical at 5.5 V - extends battery life in portable indicator applications |
| ESD rating | 2000 V HBM - ensures robustness during board handling and integration |
Pinout & Package
PCA9530D,118 is supplied in an 8-pin SO8 package (SOT96-1), 3.9 mm body width, surface-mount plastic small outline format. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Hardware address select input | Configures slave address LSB (0x60 or 0x61); must be pulled HIGH/LOW externally - enables two devices on same I²C bus |
| VDD | Positive supply rail | 2.3–5.5 V power input; decoupling capacitor required near pin for stable PWM operation |
| LED0 | Open-drain LED driver output 0 | Sinks up to 25 mA; LOW = LED ON; configured via LS0 register for ON/OFF/BLINK0/BLINK1 mode |
| SDA | I²C serial data line | Bi-directional, open-drain, SMBus-compatible; requires external pull-up resistor (typically 2.2–10 kΩ) |
| LED1 | Open-drain LED driver output 1 | Independent of LED0; identical electrical specs and register control - enables dual-color or redundant indicators |
| SCL | I²C serial clock line | Input only; driven by master; noise-filtered for reliable operation in noisy environments |
| VSS | Ground reference | 0 V return path; must be low-impedance connection to minimize PWM ripple and EMI |
| RESET | Active-low hardware reset | Asynchronous reset; holds registers in default state (all outputs HIGH) until released - critical for fail-safe initialization |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM channels | Enables simultaneous but distinct blinking/dimming of two LEDs - eliminates need for external timers or MCU GPIO toggling |
| No external oscillator required | Reduces BOM count and PCB footprint; eliminates crystal load capacitance tuning and layout sensitivity |
| GPIO reconfigurability | Unused LEDn pins serve as general-purpose inputs/outputs with interrupt-capable read-back via INPUT register |
| I²C noise filtering | Suppresses transients on SCL/SDA lines - improves reliability in industrial or automotive-adjacent environments |
| Hot insertion support | Allows safe insertion/removal while I²C bus is active - simplifies field-serviceable display modules and test fixtures |
Applications
| RGB Backlight Control | System Status Indicators |
|---|---|
Use Scenario: Driving red/green/blue LEDs behind LCD panels in handheld medical devices or industrial HMIs where color accuracy and low power are essential. IC Role / Device Role / Timing Role: PCA9530D,118 acts as dedicated I²C-controlled dimmer, generating synchronized PWM signals for each color channel using its internal oscillator and dual prescaler registers. Use Value: Achieves 256-step per-channel brightness control without consuming MCU timer resources or increasing firmware complexity. | Use Scenario: Providing user-visible status feedback (e.g., power-on, fault, standby) on network routers, PLC modules, or USB-C PD adapters. IC Role / Device Role / Timing Role: PCA9530D,118 serves as autonomous blink controller - BLINK0 and BLINK1 drive separate LEDs at distinct frequencies (e.g., 2 Hz for power, 0.5 Hz for alarm). Use Value: Eliminates need for continuous MCU polling or software-based timing loops, reducing CPU load and improving system responsiveness. |
| ACPI Power Switch Interface | Fan Speed Monitoring & Alert |
Use Scenario: Supporting ACPI-compliant sleep/wake signaling in embedded x86 platforms or ARM-based edge gateways using mechanical switches and LED confirmation. IC Role / Device Role / Timing Role: PCA9530D,118 configures unused LEDn pins as GPIO inputs to detect switch closure, while simultaneously driving an LED to confirm state change. Use Value: Integrates input sensing and visual feedback into one compact IC - avoids separate buffer + LED driver + pull-up resistor solution. | Use Scenario: Monitoring tachometer signals from cooling fans and triggering visual alerts (e.g., slow blink for under-speed, fast blink for over-temp) in telecom base stations. IC Role / Device Role / Timing Role: PCA9530D,118 uses one LEDn pin as input to read fan pulse train, and the other as PWM-controlled alert LED - coordinated via I²C host. Use Value: Enables real-time thermal/fan health visualization without adding microcontroller peripherals or external logic gates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED dimmer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9531D,118 | 4-bit version with identical architecture, same pinout, and extended register map - adds two more PWM outputs | Required when >2 LED channels needed; shares same I²C address space but requires updated firmware register access | Select PCA9531D,118 only if future expansion to 4 LEDs is certain - avoids redesign but increases cost and quiescent current |
| TLC59108IPWR | 8-bit I²C LED driver with higher sink current (100 mA/channel), no built-in oscillator - requires external clock or MCU-generated PWM | Better suited for high-current LED arrays; lacks autonomous blink capability - demands additional MCU timing resources | Choose TLC59108IPWR when driving high-brightness LEDs (>25 mA) or needing >2 channels; accept added firmware overhead for flexibility |
Compared with PCA9530D,118, PCA9531D,118 offers scalable channel count with zero layout change, while TLC59108IPWR trades autonomous timing for higher drive strength and channel density - selection depends on whether self-contained blink control or raw current/power scalability is prioritized.
Availability
PCA9530D,118 is available at Aetrix Electronics and suitable for RGB backlight control, system status indication, ACPI power switching, fan monitoring, and industrial HMI applications requiring stable component supply and long-term manufacturability.
Supply support for PCA9530D,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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The PCA9530D,118 belongs to NXP's I²C-bus I/O expander product line, designed specifically to reduce MCU GPIO burden in LED-intensive embedded systems while maintaining low power, small footprint, and robust bus communication.
FAQ
What is the maximum sink current per output on the PCA9530D,118?
The PCA9530D,118 provides a maximum output sink current of 25 mA per LED driver (LED0 or LED1), with a total package limit of 50 mA. This rating is specified under DC conditions with VOL ≤ 0.4 V at VDD = 5.0 V, and must be respected to avoid thermal overstress or output degradation. The PCA9530D,118 datasheet confirms this in Table 11 (Limiting Values) and Table 12 (Static Characteristics).
Does the PCA9530D,118 require external components to generate PWM signals?
No, the PCA9530D,118 contains a fully integrated internal oscillator and does not require external crystals, RC networks, or clock sources to generate its two programmable blink rates. All timing is derived from the on-chip oscillator, with frequency and duty cycle set via PSC0/PSC1 and PWM0/PWM1 registers - enabling true autonomous LED control after initial I²C configuration.
Can unused LED pins on the PCA9530D,118 be used as general-purpose inputs or outputs?
Yes, both LED0 and LED1 pins on the PCA9530D,118 can be reconfigured as general-purpose I/Os. When set to high-impedance mode (LS0 = 00), they function as inputs readable via the INPUT register. When driven LOW (LS0 = 01) or PWM-modulated (LS0 = 10/11), they act as outputs - though external pull-up resistors are required for HIGH-level assertion. This dual-role capability is documented in Section 6.4 of the PCA9530D,118 datasheet.
What I²C bus speeds does the PCA9530D,118 support?
The PCA9530D,118 supports standard-mode I²C (up to 100 kHz) and fast-mode I²C (up to 400 kHz), as verified in Table 13 (Dynamic Characteristics). Its SCL/SDA inputs include built-in noise filters, ensuring reliable communication even in electrically noisy environments. The device acknowledges addresses and data correctly across both modes, with timing parameters validated per I²C specification.
How does the RESET pin function on the PCA9530D,118?
The RESET pin on the PCA9530D,118 is an active-low asynchronous input that forces all internal registers to their default states (outputs HIGH, blink registers zeroed) regardless of I²C activity. It must be pulled HIGH via an external resistor when not asserted; minimum pulse width is 6 ns. This hardware reset complements the internal Power-On Reset (POR) and ensures deterministic recovery after fault conditions - a key feature confirmed in Sections 6.5 and 6.6 of the PCA9530D,118 datasheet.
PCA9530D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 25mA
- Frequency:
- 400kHz
- Dimming:
- I2C, SMBus
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
PCA9530D,118 FAQ
1.How can I place an order for PCA9530D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9530D,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 PCA9530D,118 reliable?
The price and inventory of PCA9530D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9530D,118 is usually 5 days.
3.What payment methods are accepted for PCA9530D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9530D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9530D,118?
PCA9530D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9530D,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 PCA9530D,118?
For technical support, including PCA9530D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9530D,118 requirements.
6.How does Aetrix verify that PCA9530D,118 is sourced from the original manufacturer or authorized distributors?
All PCA9530D,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 PCA9530D,118 meets industry standards.
7.What is the process for return or replacement of PCA9530D,118?
All PCA9530D,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9530D,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 PCA9530D,118 part is unused and in its original packaging.
Return procedure for PCA9530D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9530D,118 Tags
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