STMicroelectronics STP08DP05B1

Overview

STP08DP05B1 from STMicroelectronics is an 8-bit constant-current LED sink driver in DIP-16 package, designed for LED panel displays. It delivers 5–100 mA per channel with ±1.5% inter-channel current accuracy at ≥1.3 V output voltage, supports 30 MHz serial data clocking, and integrates open/short output error detection without additional pins. Used in indoor signage and industrial status panels where precise brightness control and fault visibility are critical.

For engineers reviewing the STP08DP05B1 datasheet, STP08DP05B1 pinout, STP08DP05B1 application, or STP08DP05B1 equivalent, this page provides verified pin functions, real-world detection-mode timing sequences, thermal resistance (90 °C/W), R_EXT-based current programming, and direct substitution guidance for legacy STP8C/L596 designs.

Technical Context

The STP08DP05B1 implements a cascaded 8-bit shift register feeding an 8-bit D-type storage latch, enabling serial-in/parallel-out LED control. Its output stage uses eight matched regulated current sinks, each programmable via a single external resistor (R_EXT) to set full-scale current from 5 mA to 100 mA.

Error detection operates in a dedicated mode entered via a 5-cycle OE/DM2 and LE/DM1 logic sequence; it evaluates each output for short-to-GND, short-to-V_O, or open-circuit conditions and shifts results out via SDO. Detection requires no extra pins and completes in <1 µs per channel.

Key Specifications

Pinout & Package

STP08DP05B1 is housed in a 16-pin dual in-line package (DIP-16) with through-hole mounting and standard 2.54 mm pitch. The exposed pad variant is not used in this order code; thermal performance relies on PCB copper area under the body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP08DP05B1, the MTR and TTR variants offer identical functionality but trade DIP-16's thermal robustness (90 °C/W) for smaller footprints-making B1 optimal for industrial LED panels where reliability under sustained load matters more than board area.

Availability

STP08DP05B1 is available at Aetrix Electronics and suitable for indoor LED signage, industrial status panels, point-of-sale displays, and transportation annunciators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STP08DP05B1 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STP08DP05 belongs to ST's LED driver product line, engineered specifically for cost-sensitive, high-reliability LED panel applications demanding integrated diagnostics, wide supply range, and backward-compatible packaging.

FAQ

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

The datasheet specifies 190 Ω for 100 mA output at V_O = 1.3 V (Table 7). Using 190 Ω achieves ±1.2% inter-channel current error. Lower values risk exceeding absolute maximum ratings; 124 Ω enables 130 mA but voids guaranteed specifications and increases thermal stress.

How does the detection mode determine short-to-V_O versus open-circuit?

Short-to-V_O is detected when output voltage exceeds 2.5 V while current drops below 50% of programmed value (Table 14). Open-circuit is flagged when current falls to ≤50% of programmed value *and* output voltage remains near 0 V-distinguishing it from short-to-GND, which pulls voltage to GND.

Can STP08DP05B1 drive RGB LEDs with independent color control?

No-it provides only common-anode sink control per channel. Each OUT pin sources no current; it sinks current from a single LED or LED string cathode. For RGB, three separate STP08DP05B1 devices (one per color) or a dedicated RGB driver like STP16CP05 would be required.

Is thermal pad connection required for STP08DP05B1 in DIP-16 package?

No-the DIP-16 variant (STP08DP05B1) has no exposed thermal pad. That feature exists only in the HTSSOP-16 exposed-pad variant (STP08DP05XTTR). For B1, thermal performance depends solely on PCB copper area under the package body and ambient airflow.