STMicroelectronics STP16CPC05XTTR

Overview

STP16CPC05XTTR from STMicroelectronics is a 16-channel constant-current LED sink driver in TSSOP-24 exposed pad package, designed for high-density LED panel displays. It delivers precise 5–100 mA per channel via external R_EXT, supports 30 MHz serial clocking, features balanced 100 ns rise/fall times, and operates from 3.0–5.5 V supply-enabling direct interface with 3.3 V microcontrollers in signage and industrial HMI applications.

For engineers reviewing the STP16CPC05XTTR datasheet, STP16CPC05XTTR pinout, STP16CPC05XTTR application, or STP16CPC05XTTR equivalent, key selection criteria include output current accuracy (±1.5% between bits), thermal resistance (37.5 °C/W with exposed pad), OE/LE timing margins, and R_EXT-programmable current scaling across 3–100 mA range.

Technical Context

The device integrates a 16-bit serial-in, parallel-out shift register cascaded to a 16-bit D-type storage latch, enabling synchronized LED state updates. Its output stage uses sixteen matched current-regulated sinks with independent turn-on/turn-off optimization to minimize ringing in high-speed LED matrix scanning.

Control logic accepts asynchronous serial data (SDI) synchronized by CLK, latches outputs on LE edge, and enables/disables all channels via active-low OE. SDO supports daisy-chaining multiple devices without external buffering, maintaining signal integrity up to 30 MHz.

Key Specifications

Pinout & Package

TSSOP-24 exposed pad package (ECOPACK® compliant) with thermally enhanced copper land under die pad; requires soldering pad to PCB ground plane for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-channel constant-current LED sink driver applications.

Compared with TLC59283RTJR and IS31FL3728-QFLS4-TR, STP16CPC05XTTR uniquely balances high-current capability (100 mA), high-speed serial interface (30 MHz), and thermal efficiency (37.5 °C/W) in a cost-optimized TSSOP package-making it optimal for high-brightness, high-refresh-rate LED panels where precision and reliability are prioritized over protocol flexibility.

Availability

STP16CPC05XTTR is available at Aetrix Electronics and suitable for LED signage panels, industrial HMI displays, and automotive interior lighting requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.

Supply support for STP16CPC05XTTR 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, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The STP16CPC05 belongs to ST's LED driver portfolio targeting high-reliability, high-density display systems; its design emphasizes thermal robustness, current matching, and seamless integration with 3.3 V microcontrollers in harsh electromagnetic environments.

FAQ

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

Per Table 9 in DS6083 Rev 6, a 200 Ω resistor sets nominal 100 mA output current. The device guarantees 96–104 mA across temperature and unit variation at this setting. Lower values risk exceeding absolute maximum ratings; 200 Ω is the validated minimum for full-scale operation.

Can STP16CPC05XTTR drive LEDs with forward voltage >3.3 V?

Yes. The device supports up to 20 V output voltage per channel, enabling series connection of up to seven standard white LEDs (VF ≈ 2.8–3.3 V each) or five high-VF green/blue LEDs (VF ≈ 3.8–4.2 V). Output compliance is maintained as long as V_OUT ≤ 20 V and V_DD ≥ V_LEDs + V_drop.

How does the exposed pad affect thermal performance?

The TSSOP-24 exposed pad reduces junction-to-ambient thermal resistance to 37.5 °C/W when soldered to a ≥100 mm² copper land connected to internal ground planes. Without pad connection, R_thJA degrades to 85 °C/W (standard TSSOP-24), limiting safe continuous current to ~50 mA per channel at +85 °C ambient.

Is SDO output compatible with 3.3 V MCU inputs when VDD = 5 V?

Yes. SDO is a CMOS push-pull output with VOH ≥ VDD − 0.4 V and VOL ≤ 0.4 V. At VDD = 5 V, VOH ≥ 4.6 V exceeds 3.3 V MCU VIH (typically 0.7 × 3.3 V = 2.31 V), ensuring reliable logic-high recognition without level translation.