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Product Detailed Parameters
- Description：IC LED DRV LIN PWM 57MA 28HTSSOP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：16
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：40V
- Current - Output / Channel：57mA
- Frequency：-
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-HTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The PCA9955TW/Q900,118 is a 16-channel constant-current LED driver IC designed for automotive and industrial applications. It operates on an Fm+ I2C bus interface with a maximum clock frequency of 1 MHz. The device provides linear PWM dimming control with an output current of 57 mA per channel. It supports a supply voltage range from 3 V to 5.5 V and can drive loads up to 40 V. Packaged in a 28-HTSSOP with exposed pad, it is AEC-Q100 qualified and rated for operation between -40°C and +85°C.
Feature Summary
- Integrates 16 independent constant-current outputs capable of driving high-power LEDs or backlight arrays.
- Supports high-speed Fm+ I2C communication for efficient system control and data transfer.
- Features internal linear PWM dimming logic allowing precise brightness adjustment without external components.
- Complies with AEC-Q100 automotive standards for reliability in demanding thermal environments.
Applications
- Automotive exterior lighting systems including headlamps and taillamps
- Interior ambient lighting and status indication modules
- Steering wheel LED controls and dashboard displays
- Industrial general-purpose LED matrix drivers
Procurement Notes
This component has reached the end-of-life stage and is scheduled for obsolescence by NXP Semiconductors. Procurement should be limited to final-time buys as production will cease. Verify availability through authorized distributors only, noting that lead times may vary significantly due to remaining stock constraints. Ensure all orders are final as returns are typically not accepted for obsolete inventory management reasons.
Selection Notes
Select this part when a 16-channel solution with 57 mA sink capability and 40 V compliance is required. It is suitable for designs needing AEC-Q100 certification and Fm+ I2C speed. Consider the 28-HTSSOP package constraints and thermal dissipation requirements. Evaluate power budget calculations carefully given the fixed current setting and linear regulation nature of the outputs.
Part Context
The PCA9955 series belongs to NXP's portfolio of intelligent LED drivers optimized for complex lighting topologies. It complements other family members like the PCA9952 and PCA9956BTW, offering specific channel counts and voltage ratings tailored for automotive body electronics. The TW suffix indicates tape and reel packaging configuration for automated assembly processes.
Replacement Considerations
PCA9952TW/Q900,118 is a confirmed parameter-equivalent substitute within the same manufacturer line. Both devices share identical pinouts and functional specifications, facilitating direct replacement in existing designs without hardware modification.
