STMicroelectronics STP16DPS05TTR

Overview

STP16DPS05TTR from STMicroelectronics is a 16-bit constant-current LED sink driver with integrated open/short error detection, designed for LED panel displays and signage systems. It delivers 20–100 mA per channel via external R_EXT, supports 30 MHz serial clocking, operates from 3–5.5 V supply, and features dual-mode pins (LE/DM1 and OE/DM2) enabling error detection without extra I/O.

For engineers reviewing the STP16DPS05TTR datasheet, STP16DPS05TTR pinout, STP16DPS05TTR application, or STP16DPS05TTR equivalent, this device serves as a drop-in upgrade to STP16C/L596 with enhanced thermal performance in TSSOP24 exposed pad, real-time LED fault reporting, and auto power-saving mode reducing quiescent current to 163 µA during idle periods.

Technical Context

The STP16DPS05TTR integrates a 16-bit serial-in/parallel-out shift register feeding a 16-bit D-type storage latch, driving sixteen matched current sources. Its output stage provides precise constant-current sinking (±1.5% between bits at 25 °C) with 20 V output voltage capability-enabling up to 6–7 white LEDs in series at 3.3 V.

Error detection operates in three phases: entry via synchronized OE/DM2 and LE/DM1 logic sequence, active sensing of open/short-to-GND/short-to-V_O conditions on all 16 outputs within ≥1 µs, and serial readback of results via SDO. Detection uses the same data format as normal operation and requires no additional pins.

Key Specifications

Pinout & Package

TSSOP24 exposed pad package (JEDEC MO-153AC), thermally optimized with 37.5 °C/W junction-to-ambient resistance when exposed pad is soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED sink driver applications.

Compared with TLC59283RTJR, STP16DPS05TTR trades higher max current for integrated diagnostics and lower standby power; compared with STP16CP05MTR, it adds thermal efficiency and autonomous power management-critical for dense, always-on displays.

Availability

STP16DPS05TTR is available at Aetrix Electronics and suitable for LED video walls, industrial HMI panels, architectural lighting controls, and transportation signage requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STP16DPS05TTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The STP16DPS05 product line targets high-reliability LED display systems requiring integrated diagnostics, thermal resilience, and seamless microcontroller interfacing-emphasizing fault-aware operation in mission-critical visual infrastructure.

FAQ

What is the minimum R_EXT value for 100 mA output current?

Per Table 7 and Figure 11, a 190 Ω R_EXT sets nominal 100 mA output at V_DD = 5 V and T_A = 25 °C. At 100 mA, ΔI_OL3 is ±1.2% between bits. Lower values risk exceeding absolute maximum output current (100 mA) or violating thermal limits in TSSOP24 exposed pad at high ambient temperatures.

How does the auto power-saving mode activate and recover?

Auto power-save activates after 16 consecutive CLK cycles with no change in latch data, reducing supply current to 163 µA. Recovery occurs on the first LE/DM1 high-to-low transition following activation, restoring full functionality within 1.053 µs (measured T_LE-OUT delay). No external reset is required.

Can STP16DPS05TTR drive LEDs with forward voltages exceeding 5 V?

Yes-the device guarantees 20 V output voltage compliance, allowing series connection of up to six typical white LEDs (3.2 V each) or eight red LEDs (2.2 V each) at 3.3 V supply. Output voltage headroom is V_O = V_DD − V_drop, where dropout is ≤0.4 V at 20 mA and ≤1.2 V at 100 mA (Figure 12).

Is the exposed pad of the TSSOP24 package electrically connected?

Yes-the exposed pad is internally connected to GND and must be soldered to a PCB copper land tied to the system ground plane. This achieves the rated 37.5 °C/W thermal resistance; leaving it floating degrades thermal performance by >2.5× and risks reliability failure under sustained 100 mA/channel load.