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PCA9531PW The PCA9531PW from NXP Semiconductors is an 8-bit I2C-bus LED dimmer designed for precise brightness control. It operates with a supply voltage of 2.3V to 5.5V and offers 25mA output current per bit.
Mfr Part #:

PCA9531PW

Available from 1 distributors
Mfr Name: NXP Semiconductors
NXP Semiconductors
The PCA9531PW from NXP Semiconductors is an 8-bit I2C-bus LED dimmer designed for precise brightness control. It operates with a supply voltage of 2.3V to 5.5V and offers 25mA output current per bit.
✓ Total Stock: 185 pcs
$ Price Range: $2.21

PCA9531PW Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Rayichip ✓
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185 pcs
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PCA9531PW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
Interface
Output Current
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PCA9531PW Description

Short technical summary and product information.

The PCA9531PW by NXP Semiconductors is an 8-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs. It provides precise brightness control in 256 discrete steps, making it ideal for RGB and backlight applications.

 

Key specifications include a supply voltage range of 2.3V to 5.5V and an output current of 25mA per bit. The interface is I2C/SMBus. The device features two programmable blink rates and an internal oscillator, eliminating the need for external components.

 

This LED dimmer is best suited for RGB color mixing and LED backlighting. It is not recommended for high-current LED driving without external transistors. Users should check for potential I2C bus address conflicts before implementation.

 

The PCA9531PW is designed for applications requiring fine-tuned LED illumination control.

PCA9531PW Quick Information

Product Type: LED Driver I2C Dimmer
Canonical Name: PCA9531PW 8-bit I2C-bus LED Dimmer
Subcategory: I2C Bus I/O Expander

PCA9531PW Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

PCA9531PW Estimated Pricing

Qty Low High
1+ $2.21 $2.21

Estimated market price range - modelled values for guidance only, not live distributor offers.

PCA9531PW Features

  • 8-bit I2C-bus LED dimmer.
  • Precise brightness control in 256 steps.
  • Supply voltage from 2.3V to 5.5V.
  • 25mA output current per bit.
  • Internal oscillator requires no external components.

PCA9531PW Applications

  • Used for LED brightness control in lighting systems.
  • Ideal for RGB color mixing applications.
  • Suitable for backlight dimming in displays.
  • Applicable in LED driver circuits requiring precise dimming.
  • Used in electronic devices with I2C interface control.

PCA9531PW FAQs

5 frequently asked questions generated from this part’s specifications.
What is the PCA9531PW?

It is an 8-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps.

What are the key features of the PCA9531PW?

It features two programmable blink rates, 256 brightness steps, and an internal oscillator requiring no external components.

What is the supply voltage range for the PCA9531PW?

The supply voltage is 2.3 V to 5.5 V.

What is the output current per bit for the PCA9531PW?

The output current is 25 mA per bit.

What interface does the PCA9531PW use?

The interface is I2C/SMBus.

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