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NXP Semiconductors PCA9530DP,118
- Part No.:
- PCA9530DP,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
PCA9530DP,118.pdf
- Description:
- IC LED DRVR LIN I2C 25MA 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
PCA9530DP,118 from NXP Semiconductors is a 2-bit I²C-bus LED dimmer IC optimized for RGB color mixing and backlight control via PWM-driven open-drain outputs. It integrates an internal oscillator supporting two independent programmable blink rates (0.591 Hz to 152 Hz) and 256-step brightness resolution per channel, with 25 mA sink current per output and 2.3 V–5.5 V supply operation.
For engineers reviewing the PCA9530DP,118 datasheet, PCA9530DP,118 pinout, PCA9530DP,118 application, or PCA9530DP,118 equivalent, this device delivers deterministic LED dimming without external timing components, supports hot insertion, includes noise-filtered I²C interfaces up to 400 kHz, and enables GPIO reuse of unused LED pins in ACPI-compliant systems.
Technical Context
The PCA9530DP,118 implements dual independent PWM channels (BLINK0/BLINK1) driven by separate 8-bit prescaler (PSC0/PSC1) and duty-cycle (PWM0/PWM1) registers, enabling simultaneous but distinct dimming profiles. Its internal oscillator eliminates external RC networks, and the LED selector register (LS0) directly maps each output to HIGH-Z, ON, BLINK0, or BLINK1 modes.
Operation relies on I²C slave addressing with one hardware-selectable A0 pin (allowing two devices per bus), active-low RESET with internal pull-up requirement, and Power-On Reset (POR) that initializes all registers to default states-outputs HIGH-Z (LED off), prescalers at 0x00, and PWM registers at 0x80 (50% duty cycle).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Channels | 2 independent open-drain outputs (LED0, LED1) with programmable PWM control |
| Blink Frequency Range | 0.591 Hz to 152 Hz (1.69 s to 6.58 ms period) per channel via 8-bit prescaler |
| Brightness Resolution | 256 discrete steps (8-bit PWM duty cycle: 0/256 to 255/256) |
| Output Sink Current | 25 mA per channel, 50 mA total package limit - defines max LED drive capability |
| Supply Voltage | 2.3 V to 5.5 V - supports 3.3 V and 5 V logic domains without level shifting |
| I²C Bus Speed | Up to 400 kHz Fast-mode - enables rapid brightness updates in real-time UIs |
| ESD Protection | 2000 V HBM, 150 V MM, 1000 V CDM - ensures robustness in handling and system integration |
Pinout & Package
TSSOP8 (SOT505-1) package: plastic thin shrink small outline, 8-lead, 3 mm body width, 0.65 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Hardware address select input | Configures LSB of I²C slave address (0x60 or 0x61); must be pulled HIGH/LOW externally |
| VDD | Positive supply voltage | 2.3 V–5.5 V power rail; powers internal oscillator, logic, and output drivers |
| LED0 | Channel 0 open-drain output | Sinks up to 25 mA; drives LED cathode or functions as GPIO when configured in high-Z |
| SDA | I²C serial data line | Open-drain bidirectional interface with integrated noise filter; requires external pull-up |
| LED1 | Channel 1 open-drain output | Independent of LED0; supports concurrent but different blink rate/duty cycle |
| SCL | I²C serial clock line | Input-only clock signal with integrated noise filter; synchronizes all register transfers |
| VSS | Ground reference | Return path for supply current and output sink current; must be low-impedance |
| RESET | Active-low hardware reset | Asynchronous reset pin; holds registers and I²C state machine in default state while LOW |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM engines | Enables simultaneous RGB channel control with distinct frequency/duty cycle per LED |
| No external timing components | Internal oscillator eliminates RC networks, reducing BOM count and layout area |
| GPIO reuse capability | Unused LEDn pins operate as configurable inputs/outputs via INPUT and LS0 registers |
| I²C noise filtering | Integrated SCL/SDA input filters suppress EMI-induced glitches in noisy industrial environments |
| Hot-insertion support | Allows safe connection/disconnection while bus is active - critical for modular display systems |
Applications
| RGB Backlight Control | System Status Indicator |
|---|---|
Use Scenario: Driving red/green/blue LEDs behind LCD panels to achieve precise white-point tuning and dynamic contrast adjustment. IC Role / Device Role / Timing Role: Dual-channel PWM dimmer providing synchronized yet independently programmable LED current control. Use Value: Eliminates need for external microcontroller PWM timers and reduces firmware overhead for color calibration routines. |
Use Scenario: Visual status feedback for embedded controllers in network switches, industrial PLCs, or medical devices. IC Role / Device Role / Timing Role: Standalone blink controller managing heartbeat, fault, or activity indicators without MCU intervention. Use Value: Frees MCU resources for core tasks while ensuring consistent, jitter-free LED pulsing at user-defined intervals. |
| ACPI Power Switch Interface | Fan Speed Monitoring Interface |
Use Scenario: Supporting OS-directed power state transitions (S0–S5) via hardware-controlled LED indicators tied to ACPI events. IC Role / Device Role / Timing Role: GPIO-expanding I²C peripheral mapping power-state signals to visual cues with hardware-level reliability. Use Value: Provides deterministic LED behavior during sleep/wake cycles independent of OS driver stability. |
Use Scenario: Monitoring fan tachometer signals and driving status LEDs indicating RPM thresholds or failure conditions. IC Role / Device Role / Timing Role: Bidirectional I/O expander reading fan pulses via INPUT register and signaling alerts via LED0/LED1. Use Value: Enables compact thermal management subsystems using only I²C lines and no additional interrupt pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED dimming applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9531DP,118 | 4-channel version with identical TSSOP8 footprint, same 25 mA/channel, but doubles LED count and register set | Required when >2 LEDs need independent dimming; adds complexity for 2-LED use cases | Select PCA9531DP,118 only if future expansion to 4 LEDs is certain - avoids redesign but increases cost |
| TLC59108IPWR | 8-channel I²C LED driver with 12-bit PWM resolution, higher 25 mA/channel, but no built-in oscillator - requires external clock or MCU timing | Preferred for high-fidelity lighting where >256 brightness steps are mandatory | Choose TLC59108IPWR when grayscale depth >8-bit is required; PCA9530DP,118 remains optimal for cost-sensitive 2-LED RGB |
Compared with PCA9531DP,118 and TLC59108IPWR, the PCA9530DP,118 offers the lowest BOM cost and smallest footprint for exactly two independently dimmable LEDs, with zero external timing components and guaranteed 256-step linearity across its full operating voltage range.
Availability
PCA9530DP,118 is available at Aetrix Electronics and suitable for RGB backlight control, system status indication, and ACPI-compliant power switch interfaces requiring stable component supply across industrial temperature ranges (−40 °C to +85 °C).
Supply support for PCA9530DP,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 I²C ecosystem peripherals and power-efficient mixed-signal design.
The PCA9530DP,118 belongs to NXP's I²C-bus I/O expander family, engineered specifically for low-pin-count LED dimming in space-constrained displays and human-machine interfaces where deterministic timing and minimal external components are critical.
FAQ
What is the maximum LED blink period achievable with PCA9530DP,118?
The PCA9530DP,118 supports a maximum blink period of 1.69 seconds per channel, derived from its lowest programmable frequency of 0.591 Hz (1 / 0.591 ≈ 1.69 s). This is achieved by setting the PSC0 or PSC1 register to 0xFF (255), yielding (255 + 1) / 152 ≈ 1.69 s. Longer periods require MCU-level toggling via repeated I²C commands.
Can PCA9530DP,118 drive LEDs directly without external current-limiting resistors?
No - PCA9530DP,118 requires external current-limiting resistors on each LED anode (when using common-anode configuration) or cathode (common-cathode). Its open-drain outputs sink current only; the resistor sets the peak LED current based on VDD and forward voltage. The 25 mA per-output rating defines the absolute maximum sink capability, not a self-regulated current source.
How does the PCA9530DP,118 handle power-on initialization?
Upon power application, PCA9530DP,118 performs an internal Power-On Reset (POR) that initializes all registers to default values: outputs set to HIGH-Z (LED off), PSC0/PSC1 = 0x00, PWM0/PWM1 = 0x80 (50% duty cycle), and LS0 = 0x00 (all outputs off). POR completes when VDD exceeds VPOR (1.7–2.2 V), ensuring predictable startup behavior without external reset circuitry.
Is PCA9530DP,118 compatible with SMBus hosts?
Yes - PCA9530DP,118 is fully SMBus-compatible: it adheres to SMBus electrical specifications (including voltage thresholds and timing), supports SMBus Alert response, and tolerates SMBus packet error checking (PEC) omission. Its I²C interface logic meets SMBus v2.0 requirements, enabling seamless integration into server management and embedded control subsystems.
What is the function of the A0 pin on PCA9530DP,118?
The A0 pin on PCA9530DP,118 selects the LSB of the 7-bit I²C slave address, allowing two PCA9530DP,118 devices to share the same I²C bus. When A0 is pulled LOW, the address is 0x60; when pulled HIGH, it is 0x61. No internal pull-up/pull-down exists on A0, so an external resistor must bias it definitively to avoid bus contention.
PCA9530DP,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-TSSOP
PCA9530DP,118 FAQ
1.How can I place an order for PCA9530DP,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9530DP,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 PCA9530DP,118 reliable?
The price and inventory of PCA9530DP,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9530DP,118 is usually 5 days.
3.What payment methods are accepted for PCA9530DP,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9530DP,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9530DP,118?
PCA9530DP,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9530DP,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 PCA9530DP,118?
For technical support, including PCA9530DP,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9530DP,118 requirements.
6.How does Aetrix verify that PCA9530DP,118 is sourced from the original manufacturer or authorized distributors?
All PCA9530DP,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 PCA9530DP,118 meets industry standards.
7.What is the process for return or replacement of PCA9530DP,118?
All PCA9530DP,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9530DP,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 PCA9530DP,118 part is unused and in its original packaging.
Return procedure for PCA9530DP,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9530DP,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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