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Product Detailed Parameters
- Description：IC LED DRVR LIN I2C 25MA 16TSSOP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tube
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：8
- 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)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Grade：-
- Qualification：-
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Overview
The PCA9531PW,112 is an NXP Semiconductors LED lighting driver IC featuring eight output channels with a low-level sink current of 25 mA per channel. It operates within a supply voltage range of 2.3 V to 5.5 V and supports I2C interface communication at frequencies up to 400 kHz. The device utilizes PWM dimming capabilities and is housed in a TSSOP-16 surface-mount package. It functions as a linear LED driver suitable for backlight applications across a temperature range of -40°C to +85°C.
Feature Summary
- Eight-channel LED driver with independent control via I2C interface
- Supports PWM dimming for precise brightness adjustment
- Integrated internal oscillator for stable operation without external timing components
- Hardware reset pin ensures defined power-on state
Applications
- LCD backlight illumination systems
- RGB color mixing circuits
- General-purpose parallel input/output expansion
- Embedded display driver modules
Procurement Notes
Verify the specific suffix '112' against official NXP documentation to confirm tape-and-reel packaging versus tube configuration. Ensure the ordering code matches the exact variant required for your PCB footprint. Cross-reference the datasheet revision date to validate electrical characteristics and pinout compatibility before finalizing procurement orders.
Selection Notes
Select this component when an eight-channel solution with 25 mA sink capability is required for I2C-controlled LED applications. It is appropriate for designs needing PWM dimming within a 2.3 V to 5.5 V supply range. Consider the TSSOP-16 package constraints and thermal dissipation requirements relative to the total number of active channels in the target system design.
Part Context
This part belongs to the PCA9531 series of LED drivers from NXP Semiconductors. It shares functional similarities with other members like the PCA9531D and PCA9531BS but differs primarily in package type. The PW suffix specifically denotes the TSSOP-16 housing, distinguishing it from SOIC or HVQFN variants within the same product family.
Replacement Considerations
Direct substitutes include PCA9531PW,118 which shares identical electrical specifications and functionality but may differ in packaging quantity or reel configuration. Verify pin-to-pin compatibility and software register mapping equivalence before implementing any cross-model replacement.
