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Ⅰ.Overview of product

The PCA9553DP/02,118 is a linear LED driver from NXP USA Inc., categorized under Integrated Circuits (ICs) and Power Management (PMIC). It offers efficient, I2C-controlled dimming for low-power LED applications, featuring a compact form factor ideal for space-constrained electronic devices.

Ⅱ.Core parameter

Category:Integrated Circuits (ICs),Power Management (PMIC),LED Drivers

Manufacturer:NXP USA Inc.

Packaging:Tape & Reel

Type:Linear

Voltage - Supply (Min):2.3V

Voltage - Supply (Max):5.5V

Current - Output / Channel:25mA

Frequency:400kHz

Dimming:I2C

Operating Temperature:-40°C ~ 85°C (TA)

Mounting Type:Surface Mount

Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Ⅲ.Main characteristics

Flexible I2C Dimming Control:Supports 400kHz I2C communication for precise, software-adjustable LED brightness, enabling dynamic lighting effects and power optimization.

Wide Supply Voltage Range:Operates from 2.3V to 5.5V, compatible with common battery-powered and USB-powered devices, enhancing versatility across applications.

Low-Power Linear Design:Linear topology ensures simple integration with minimal external components, reducing system complexity and bill of materials (BOM) cost.

Compact Footprint:8-TSSOP/8-MSOP package (3.00mm width) and surface-mount design facilitate installation in space-limited PCBs, ideal for miniaturized electronics.

Robust Environmental Performance:Functions reliably within a -40°C to 85°C operating temperature range, adapting to both indoor and harsh environmental conditions.

Controlled Output Current:Delivers 25mA per channel, providing stable power for LEDs while preventing overcurrent damage, ensuring long-term LED reliability.

Ⅳ.Application field

Smart Home Doorbells:Used in Google Nest Doorbell (Wired) to drive the status indicator LEDs,enabling I2C-controlled dimming for power-saving standby modes and alert notifications.

Fitness Trackers:Integrated into Fitbit Charge 6 to control the OLED screen’s backlight LEDs,allowing precise brightness adjustment via I2C for optimal visibility in sunlight and power efficiency in low light.

Portable Bluetooth Headphones:Employed in Sony WH-CH720N headphones to drive the touch control panel’s indicator LEDs, supporting dynamic lighting for power status and connection notifications.

Home Automation Sensors:Used in Philips Hue Motion Sensors to power the status LEDs,with I2C dimming enabling low-power operation to extend battery life (up to 2 years) while indicating sensor activity.

Medical Thermometers:Integrated into Braun ThermoScan 7 ear thermometers to drive the temperature reading indicator LEDs, providing clear,adjustable brightness for easy reading in various lighting conditions.

Ⅴ.Summary

The NXP PCA9553DP/02,118 linear LED driver combines compact design, flexible I2C dimming, and wide environmental adaptability. It is an ideal choice for low-power electronic devices requiring reliable, precise LED control in space-constrained applications.