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NXP Semiconductors PCA9532PW,112
- Part No.:
- PCA9532PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCA9532PW,112.pdf
- Description:
- IC LED DRVR PS I2C 25MA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,554
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Product details
Overview
PCA9532PW,112 from NXP Semiconductors is a 16-bit I²C-bus LED dimmer IC with integrated oscillator, supporting 256-step PWM brightness control and two independent programmable blink rates (0.591 Hz to 152 Hz) for RGB color mixing and backlight applications. It features 16 open-drain outputs (25 mA per pin, 200 mA total), 2.3 V–5.5 V operation, and hardware address pins enabling up to eight devices on one bus.
For engineers reviewing the PCA9532PW,112 datasheet, PCA9532PW,112 pinout, PCA9532PW,112 application, or PCA9532PW,112 equivalent, this device delivers precise LED intensity control without external timing components, supports GPIO reuse of unused LED drivers, and integrates noise filtering and hot-insertion capability for robust embedded lighting systems.
Technical Context
The PCA9532PW,112 implements dual independent PWM channels (BLINK0/BLINK1) driven by internal prescalers (PSC0/PSC1) and duty-cycle registers (PWM0/PWM1), enabling simultaneous control of LEDs at distinct frequencies and intensities. Its I²C interface complies with SMBus specifications and includes input filters, controlled edge rates, and auto-increment register addressing for efficient configuration.
Each of the 16 LEDn pins operates in four modes-HIGH-Z (off), LOW (on), BLINK0, or BLINK1-selected via dedicated LED selector registers (LS0–LS3). The internal oscillator eliminates external components, while RESET (active-low) and Power-On Reset ensure deterministic initialization to all-off state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Clock Frequency | Up to 400 kHz Fast-mode - enables high-speed configuration in bandwidth-constrained systems. |
| Output Sink Current | 25 mA per LEDn pin - directly drives standard LEDs without external buffers. |
| Supply Voltage Range | 2.3 V to 5.5 V - interoperable across 3.3 V and 5 V logic domains. |
| Blink Rate Range | 0.591 Hz to 152 Hz (1.69 s to 6.58 ms period) - covers slow status indication to fast visual feedback. |
| Brightness Resolution | 256 steps (8-bit PWM) - provides fine-grained intensity control for accurate color mixing. |
| ESD Protection | 2000 V HBM - ensures reliability during handling and board assembly. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and automotive cabin environments. |
Pinout & Package
TSSOP24 package (SOT355-1): 24-pin plastic thin shrink small outline, 4.4 mm body width, lead pitch 0.65 mm, exposed pad not present (unlike HVQFN variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hardware Address Inputs | Set 3-bit slave address (0x60–0x67); must be externally pulled HIGH/LOW - no internal pull-ups. |
| LED0–LED15 | Open-Drain LED Driver Outputs / GPIOs | Configurable per LS0–LS3 registers; sink up to 25 mA each; default HIGH-Z (LED off) at power-up. |
| SCL / SDA | I²C Bus Interface | Compatible with SMBus; include noise filters and support 400 kHz Fast-mode; require external pull-ups. |
| RESET | Active-Low Hardware Reset | Asynchronous reset; holds registers in default state until deasserted; requires external pull-up if unused. |
| VDD / VSS | Power Supply Pins | VDD = 2.3–5.5 V; VSS = ground reference; decoupling capacitor recommended near VDD pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Independent PWM Channels | BLINK0 and BLINK1 operate simultaneously with separate frequency (PSC0/PSC1) and duty-cycle (PWM0/PWM1) registers - enables mixed-rate LED effects without MCU intervention. |
| No External Timing Components | Integrated oscillator eliminates need for crystals, RC networks, or external clocks - reduces BOM count and layout area. |
| GPIO Reuse Capability | Unused LEDn pins function as configurable inputs/outputs - supports push-buttons, sensors, or status indicators without adding discrete I/O expanders. |
| Robust Bus Interface | I²C inputs include noise filters and controlled slew rates - suppresses EMI-induced glitches and minimizes ground bounce in noisy environments. |
| Deterministic Power-Up Behavior | Power-On Reset and active-low RESET initialize all registers to zero - guarantees known OFF state for all outputs at startup. |
Applications
| RGB LED Backlighting | Industrial Status Indication |
|---|---|
|
Use Scenario: Driving red/green/blue LEDs behind LCD panels in medical displays or industrial HMIs to achieve precise white-point tuning and dynamic contrast. IC Role / Device Role / Timing Role: LED dimmer with synchronized 256-step PWM control across three color channels using BLINK0/BLINK1 for independent intensity scaling. Use Value: Eliminates need for three separate PWM controllers; single I²C command updates all 16 outputs - simplifies firmware and reduces latency in brightness transitions. |
Use Scenario: Providing multi-color status feedback on programmable logic controllers (PLCs) or motor drives where LED blink patterns indicate fault codes or operational modes. IC Role / Device Role / Timing Role: Programmable blink generator with two distinct rates (e.g., 2 Hz for warning, 0.5 Hz for error) assigned per LED via LS registers. Use Value: Enables standardized visual diagnostics without MCU timer resource consumption - improves system responsiveness and firmware modularity. |
| Consumer Electronics Keypad Lighting | Automotive Interior Lighting Control |
|
Use Scenario: Dimming backlit membrane keypads in smart home hubs or audio receivers with smooth fade-in/fade-out and adjustable brightness levels. IC Role / Device Role / Timing Role: I²C-controlled LED driver with 256-step resolution and low standby current (2.1 µA) - extends battery life in portable variants. Use Value: Achieves perceptually linear dimming curves using software-mapped PWM values - avoids visible stepping in low-light conditions. |
Use Scenario: Controlling ambient LED strips and door-handle illumination in automotive cabins with thermal-aware current limiting (200 mA package max). IC Role / Device Role / Timing Role: LED driver operating across −40 °C to +85 °C with ESD-hardened I/O - withstands automotive load-dump and EMI environments. Use Value: Meets AEC-Q200 stress requirements indirectly via robust qualification (HBM 2000 V, latch-up >100 mA) - reduces need for supplemental protection circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED dimmer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCA6507PW | 7-bit I²C LED driver; no internal oscillator - requires external clock or MCU-generated PWM; 25 mA per pin, but only 7 outputs. | Limited to simpler indicator applications; lacks dual-rate blinking and 16-bit scalability. | Choose when cost sensitivity outweighs feature depth and output count requirements. |
| PCA9635PW | 16-bit I²C LED driver with 12-bit PWM resolution (4096 steps); higher current (25 mA per pin, 125 mA/octal); includes built-in LED error detection. | Targeted at premium displays and high-fidelity lighting where finer intensity gradation is critical. | Choose when >256-step dimming or enhanced diagnostics justify higher BOM cost and complexity. |
Compared with TCA6507PW and PCA9635PW, the PCA9532PW,112 uniquely balances 16-channel capability, dual independent blink rates, and self-contained timing - making it optimal for cost-sensitive RGB backlighting and industrial status systems requiring deterministic, low-overhead LED control.
Availability
PCA9532PW,112 is available at Aetrix Electronics and suitable for RGB backlighting, industrial HMI status indication, and consumer keypad lighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA9532PW,112 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 I²C peripheral integration and power-efficient mixed-signal design.
The PCA9532 product line was designed to simplify LED intensity control in resource-constrained embedded systems - delivering integrated timing, flexible I/O reuse, and robust bus interface in compact packages like TSSOP24.
FAQ
What is the maximum number of PCA9532PW,112 devices that can share one I²C bus?
The PCA9532PW,112 includes three hardware address pins (A0–A2), allowing eight unique slave addresses (0x60–0x67). Therefore, up to eight PCA9532PW,112 units can operate concurrently on a single I²C bus without address conflict, provided each has a distinct A0–A2 combination tied to VDD or VSS.
Does the PCA9532PW,112 require external components for its oscillator function?
No, the PCA9532PW,112 contains a fully integrated oscillator with no external components required. This internal timing source drives both BLINK0 and BLINK1 PWM channels, eliminating crystals, capacitors, or resistors typically needed for external clock generation in LED dimming applications.
Can unused LEDn pins on the PCA9532PW,112 be used as general-purpose inputs or outputs?
Yes, unused LEDn pins on the PCA9532PW,112 can be configured as GPIOs. Set the corresponding bit in LS0–LS3 to 00 (high-impedance) to use as input and read state via INPUT0/INPUT1 registers; connect an external pull-up resistor to use as output, with drive strength limited to 25 mA sink capability.
What is the minimum blink period achievable with the PCA9532PW,112?
The shortest blink period supported by the PCA9532PW,112 is 6.58 ms, achieved when PSC0 or PSC1 is set to 0 and the internal oscillator runs at its maximum frequency of 152 Hz. This corresponds to a blink rate of 152 Hz, well above the human flicker fusion threshold.
How does the PCA9532PW,112 handle power-up sequencing to prevent unintended LED activation?
The PCA9532PW,112 incorporates a Power-On Reset (POR) circuit that holds all registers in reset until VDD reaches VPOR (1.7–2.2 V). Upon release, all outputs initialize to HIGH-Z (LED off), and all control registers reset to zero - ensuring no LEDs illuminate unexpectedly during power ramp-up.
PCA9532PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- 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:
- -
- Dimming:
- I2C
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
PCA9532PW,112 FAQ
1.How can I place an order for PCA9532PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9532PW,112 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 PCA9532PW,112 reliable?
The price and inventory of PCA9532PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9532PW,112 is usually 5 days.
3.What payment methods are accepted for PCA9532PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9532PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9532PW,112?
PCA9532PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9532PW,112 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 PCA9532PW,112?
For technical support, including PCA9532PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9532PW,112 requirements.
6.How does Aetrix verify that PCA9532PW,112 is sourced from the original manufacturer or authorized distributors?
All PCA9532PW,112 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 PCA9532PW,112 meets industry standards.
7.What is the process for return or replacement of PCA9532PW,112?
All PCA9532PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9532PW,112, 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 PCA9532PW,112 part is unused and in its original packaging.
Return procedure for PCA9532PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9532PW,112 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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