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Product Detailed Parameters
- Description：IC LED DRVR LINEAR 65MA 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：-
- Current - Output / Channel：65mA
- Frequency：-
- Dimming：-
- 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：-
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Overview
The PCA9955BTW/Q900J is a 16-channel constant current LED driver IC manufactured by NXP Semiconductors. It features an I2C interface for control and supports output currents up to 57 mA per channel with a maximum voltage tolerance of 40 V when off. The device operates within a supply voltage range of 3 V to 5.5 V and utilizes an HTSSOP28 package. It includes internal boost and buck topologies, adjustable output voltages, and functions at operating frequencies up to 8 MHz.
Feature Summary
- Provides 16 independent constant current channels for RGBA LED applications
- Integrates Fast-mode Plus I2C bus interface for serial control
- Includes built-in open/short load and overtemperature detection circuits
Applications
- Amusement product lighting systems
- RGBA LED dimming and blinking control
- Automotive steering wheel LED status indication
Procurement Notes
Verify the exact suffix designation against official NXP documentation, as standard datasheets typically list PCA9955BTW or PCA9955TW variants. Confirm RoHS compliance status and specific packaging requirements directly with the manufacturer or authorized distributors before finalizing procurement orders.
Selection Notes
Select this component for designs requiring high channel density and precise individual LED brightness control via I2C. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range and that the PCB layout accommodates the HTSSOP28 package dimensions.
Part Context
This part belongs to the PCA9955 family of LED drivers designed for entertainment and automotive uses. It differs from similar models like the PCA9952 by offering four hardware address pins instead of three and lacking a dedicated external output enable pin, relying instead on software control for output management.
Replacement Considerations
PCA9952TW/Q900,118 is documented as a parameter-equivalent substitute. Note that the PCA9952 variant has only three hardware address pins and includes an external OE pin not present in the PCA9955 design.
