TLC5928PWPR

The TLC5928PWPR is an 8-channel, constant-current LED sink driver from Texas Instruments. It provides eight low-side current sinks that drive LEDs or LED strings from a common supply. Brightness is controlled via a serial (SPI-like) interface and a grayscale/PWM scheme, allowing smooth dimming across channels. Each channel’s current is set by an external resistor (ISET), giving adjustable per-device LED current. The device supports rapid data updates and can be daisy-chained to drive larger LED arrays. Outputs are open-drain sinks, suitable for common-anode LED configurations. It comes in TI’s PWPR package variant (specific packaging code), RoHS-compliant. Typical uses include LED displays, signage, backlighting, and dashboard/architectural lighting. To use: select ISET to set current, shift in channel data, strobe with the latch/blank signals, and apply an appropriate supply voltage within the device’s ratings. For exact pinout, electrical specs, and programming details, refer to the TLC5928PWPR datasheet.

Key features of TLC5928PWPR:
- 16-channel constant-current LED sink driver (all channels share a programmable current set by IREF via an external resistor).
- PWM/dimming control via a serial data stream (per-channel brightness control).
- SPI-like control interface: SIN, SCLK, LAT; OE (output enable) for global on/off; data can be clocked in while outputs are latched.
- Daisy-chain capability for cascading multiple devices.
- Open-LED protection and current-balancing features.
- Wide LED supply voltage range; outputs sink current for various LED strings.
- Low quiescent current and fast response suitable for dynamic displays.
- Available in PWPR package.

- Pin count: 28 pins (TSSOP-28, package code PWPR).
- Function: 8-channel constant-current LED sink driver with a serial (SPI-like) input interface. Provides eight current-sink outputs (set by a single IREF), updated via clock/latch lines to drive LEDs.

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, embedded processing, and digital signal processing ICs used in a wide range of electronics.

- LED displays and signage (dot-matrix, 7-seg, LED walls)
- LCD backlighting and LED panels
- Automotive instrument clusters and dashboard indicators
- Architectural and decorative lighting/signage
- Indicator LEDs in consumer electronics and appliances
- LED matrix projects with PWM dimming and multi-channel control

28-pin TSSOP (Thin Shrink Small Outline Package).