STMicroelectronics STP08DP05MTR

Overview

STP08DP05MTR from STMicroelectronics is an 8-bit constant-current LED sink driver with integrated open/short output error detection, designed for LED panel displays and signage systems. It delivers 5–100 mA per channel via external R_EXT, supports 30 MHz serial data transfer, operates from 3.0–5.5 V supply, and features dual-mode pin functionality (DM1/DM2) for fault detection without additional pins.

For engineers reviewing the STP08DP05MTR datasheet, STP08DP05MTR pinout, STP08DP05MTR application, or STP08DP05MTR equivalent, this device is selected for high-reliability LED current control in industrial displays, automotive interior lighting, and programmable signage where real-time output fault visibility and thermal robustness are required.

Technical Context

The STP08DP05MTR integrates an 8-bit serial-in/parallel-out shift register feeding an 8-bit D-type storage register, followed by eight matched, thermally stable current sinks. Its detection mode uses a deterministic 5-clock sequence on OE/DM2 and LE/DM1 to enter error-checking state, sampling output conditions (open, short-to-GND, short-to-V_O) and shifting results out via SDO.

Each output channel provides regulated current with ±1.5% inter-channel matching at V_O ≥ 1.3 V and ±5% across ICs; dropout voltage remains ≤ 850 mV at 100 mA. The SO-16 package supports 125 °C/W junction-to-ambient thermal resistance, enabling sustained operation under continuous 100 mA/channel loads when PCB layout includes adequate copper area.

Key Specifications

Pinout & Package

STP08DP05MTR is housed in a 16-pin SOIC (SO-16) package with gull-wing leads, 1.27 mm pitch, and 9.9 mm × 6.0 mm body dimensions. The exposed pad variant (STP08DP05XTTR) is not used here; this variant uses standard SO-16 with no thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC59283RGER and AL8863SP-13, STP08DP05MTR uniquely combines 8-channel serial control, per-output fault visibility, and SO-16 compatibility-making it optimal for cost-sensitive, space-constrained LED display upgrades requiring zero-additional-pin diagnostics.

Availability

STP08DP05MTR is available at Aetrix Electronics and suitable for industrial LED signage, automotive interior lighting, and programmable retail displays requiring stable component supply and long-term manufacturing continuity.

Supply support for STP08DP05MTR 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The STP08DP05 belongs to ST's LED driver product line, engineered specifically for reliable, low-cost, and diagnostic-capable current control in static and scrolling LED displays - prioritizing thermal resilience, pin efficiency, and seamless integration with 3.3 V microcontrollers.

FAQ

What is the minimum R_EXT value supported for 100 mA output per channel?

The datasheet specifies that 100 mA output requires R_EXT = 192 Ω at V_DD = 5 V (Table 11). Using lower values risks exceeding absolute maximum ratings: R_EXT < 192 Ω may cause output current >100 mA, violating the 100 mA per-channel limit and potentially triggering thermal shutdown. ST recommends staying within the 192–6740 Ω range for guaranteed 5–100 mA operation.

Can STP08DP05MTR drive LEDs with forward voltages exceeding 15 V per string?

Yes - the device guarantees 20 V output voltage compliance (Table 4), allowing up to six standard red LEDs (2.2 V avg.) or five white LEDs (3.2 V avg.) in series per channel. However, total power dissipation must be verified: at 100 mA and 20 V drop, each channel dissipates 2 W - requiring SO-16 derating per Figure 13 and adequate PCB copper area to maintain T_J < 125 °C.

How does the detection mode interact with normal operation timing?

Detection mode requires a strict 5-clock sequence on OE/DM2 and LE/DM1 (Figure 17); entering or exiting detection suspends normal data shifting. During detection, the device samples output states for ≥1 µs after OE/DM2 goes low, then shifts results out via SDO. No data is lost - the shift register retains prior contents, and normal operation resumes immediately after the 5-clock exit sequence completes.

Is the SO-16 package of STP08DP05MTR RoHS and REACH compliant?

Yes - ST confirms ECOPACK® compliance for STP08DP05MTR in SO-16 packaging (Section 11, DocID13405 Rev 6). It meets RoHS Directive 2011/65/EU and REACH SVHC thresholds, with lead-free terminations and halogen-free molding compound. Full material declarations and certificates are available through ST's official product page using order code STP08DP05MTR.