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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

STMicroelectronics STAP16DPS05XTTR

Name: STAP16DPS05XTTR
Brand: STMicroelectronics
SKU: STAP16DPS05XTTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STAP16DPS05XTTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 24-TSSOP (0.173", 4.40mm Width) Exposed Pad

Datasheet:: STAP16DPS05XTTR.pdf

Description:: IC LED DRVR LINEAR 100MA 24TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STAP16DPS05XTTR from STMicroelectronics is a monolithic 16-bit constant-current LED sink driver with integrated open/short output error detection and auto power-saving, designed for automotive dashboard and exterior lighting systems. It delivers 5–100 mA per channel across 16 outputs, operates from 3 V to 5.5 V supply, supports 30 MHz serial clocking, and features AEC-Q100 qualification for automotive reliability.

For engineers reviewing the STAP16DPS05XTTR datasheet, STAP16DPS05XTTR pinout, STAP16DPS05XTTR application, or STAP16DPS05XTTR equivalent, key selection criteria include its 20 V output voltage rating, ±1.5% channel-to-channel current accuracy at 3.3 V, thermal shutdown at 170 °C, HTSSOP24 exposed-pad package for enhanced thermal dissipation, and dual-mode operation (normal drive + error detection) using OE/DM2 and LE/DM1 control logic.

Technical Context

The device integrates a 16-bit serial-in/parallel-out shift register feeding a 16-bit D-type storage register, driving sixteen regulated current sources with adjustable output via external R_EXT. Its detection circuit identifies three fault conditions-open line, short to GND, and short to V_O-without additional pins, loading results into the shift register for serial readback via SDO.

Operation modes are controlled by dedicated logic sequences on OE/DM2 and LE/DM1: five-clock entry sequence initiates detection mode; latch and enable signals remain level-sensitive and asynchronous to CLK; auto power-saving reduces supply current to 200–300 µA when outputs are disabled, while maintaining full 30 MHz data throughput capability in normal mode.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 independent constant-current sinks, each programmable 5–100 mA via external resistor
Supply voltage range	3.0 V to 5.5 V - enables direct interface with 3.3 V microcontrollers and compatibility with automotive 5 V rails
Max clock frequency	30 MHz - supports high-volume LED panel data transmission without timing bottlenecks
Output voltage rating	20 V - allows up to 6–7 white LEDs in series per channel at typical forward voltages
Current accuracy	±1.5% channel-to-channel at V_O = 0.4 V, 3.3 V supply - ensures uniform brightness across display segments
Thermal shutdown	170 °C junction temperature - protects against sustained overtemperature in enclosed automotive environments
ESD protection	2.0 kV HBM - meets automotive board-level ESD robustness requirements
AEC-Q100 grade	Qualified for Grade 1 (−40 °C to +125 °C ambient) - certified for under-hood and cabin applications

Pinout & Package

HTSSOP24 package with exposed thermal pad (soldered to PCB ground plane), providing 37.5 °C/W junction-to-ambient thermal resistance - 2.5× better heat dissipation than standard TSSOP24.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Ground reference	Common return path for all currents; exposed pad must be soldered to PCB ground for thermal and electrical integrity
SDI (Pin 2)	Serial data input	Accepts 3.3 V–compatible logic; feeds 16-bit shift register for LED pattern programming
CLK (Pin 3)	Clock input	Edge-triggered synchronous input; supports up to 30 MHz for fast LED refresh rates
LE/DM1 (Pin 4)	Latch/detection mode control	Level-sensitive latch enable; low = hold data, high = update; dual-function pin for entering detection mode
OUT0–OUT15 (Pins 5–20)	Constant-current sink outputs	16 individually controllable LED drivers; each rated for 20 V output swing and 100 mA max current
OE/DM2 (Pin 21)	Output enable/detection mode control	Active-low output enable; also used with LE/DM1 to initiate 5-cycle detection sequence
SDO (Pin 22)	Serial data output	Shifts out 16-bit error detection results during detection mode; compatible with 3.3 V microcontroller inputs
R-EXT (Pin 23)	Current-setting resistor terminal	Connects external resistor to set precise output current (e.g., 976 Ω → 20 mA); determines I_SET and dropout voltage
VDD (Pin 24)	Power supply	3.0–5.5 V input; powers internal logic and current generators; decoupling capacitor required near pin

Key Features

Feature	Design Value
Integrated open/short detection	Detects open-circuit, short-to-GND, and short-to-V_O on all 16 outputs without extra pins or external circuitry
Auto power-saving mode	Reduces supply current to 200–300 µA when outputs disabled - extends system standby time in infotainment displays
Backward compatibility	Pin- and function-compatible with STP16C/L596 - enables drop-in upgrade path for legacy designs
High-voltage output stage	20 V-rated current generators - supports multi-LED strings in DTRLs and instrument clusters without external boost
Thermal shutdown protection	170 °C junction limit with hysteresis - prevents latch-up or permanent damage during transient overloads
3.3 V microcontroller interface	All digital inputs accept 3.3 V logic levels; outputs drive 3.3 V–compatible loads - eliminates level-shifting components

Applications

Dashboard Backlighting

Automotive DTRLs

Use Scenario: Driving segmented LCD backlight zones in instrument clusters with dynamic dimming.

IC Role / Device Role / Timing Role: Constant-current sink driver with per-channel intensity control via OE/DM2 PWM and R_EXT-based current scaling.

Use Value: ±1.5% channel matching ensures uniform luminance across gauges; 20 V output supports 5–6 white LEDs per segment without external DC-DC.

Use Scenario: Controlling individual LED strings in daytime running lights with fault monitoring.

IC Role / Device Role / Timing Role: Fault-aware LED driver enabling real-time open/short detection during vehicle startup and operation.

Use Value: Detection results shifted out via SDO allow microcontroller to flag failed LEDs before illumination - meeting ISO 26262 functional safety expectations.

Infotainment Display Lighting

Exterior Signaling Modules

Use Scenario: Powering RGB or monochrome LED arrays behind center-stack touchscreens.

IC Role / Device Role / Timing Role: High-speed serial interface (30 MHz) enables rapid frame updates for animated UI indicators.

Use Value: Auto power-saving cuts quiescent current by >95% during screen-off states - critical for low-power always-on vehicle systems.

Use Scenario: Driving sequential turn signal LEDs in side mirrors or rear lamps with thermal resilience.

IC Role / Device Role / Timing Role: AEC-Q100 qualified 16-channel sink with 170 °C thermal shutdown for under-bumper mounting.

Use Value: HTSSOP24 exposed pad dissipates heat 2.5× more effectively than standard TSSOP - sustains 100 mA/channel at +105 °C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283RTJR	16-channel, 12-bit PWM dimming; no built-in open/short detection; 17 V output rating	Lacks fault reporting - requires external sensing for safety-critical lighting	Preferred where fine-grained PWM brightness control outweighs diagnostic needs
MAX7219CWG+	8-channel, SPI interface; integrated scan controller; no auto power-saving or AEC-Q100 rating	Designed for 7-segment/LED matrix displays, not automotive LED string driving	Suitable for non-automotive consumer panels with lower reliability requirements

Compared with TLC59283RTJR and MAX7219CWG+, the STAP16DPS05XTTR uniquely combines AEC-Q100 qualification, integrated fault detection, auto power-saving, and 20 V output capability - making it the only option qualified for safety-aware automotive exterior lighting and instrument cluster backlighting.

Availability

STAP16DPS05XTTR is available at Aetrix Electronics and suitable for automotive dashboard backlighting, DTRL modules, and infotainment display lighting requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for STAP16DPS05XTTR 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, specializing in automotive, industrial, and power management ICs with broad manufacturing and quality certifications.

The STAP16DPS05XTTR belongs to ST's automotive-grade LED driver product line, engineered specifically for fault-tolerant, thermally robust LED lighting in vehicles - emphasizing diagnostic capability, wide supply range, and AEC-Q100 compliance.

FAQ

What is the minimum supply voltage required for reliable operation?

The STAP16DPS05XTTR operates reliably down to 3.0 V, supporting direct connection to 3.3 V microcontroller systems and automotive battery brownout conditions. At 3.0 V, it maintains full 16-channel drive capability up to 50 mA per channel with R_EXT adjusted accordingly, and retains all detection and auto power-saving functions.

How does the open/short detection mode work without adding pins?

Detection uses existing OE/DM2 and LE/DM1 pins in a defined 5-clock sequence to enter mode, then shifts fault status bits out via the standard SDO pin. The detection circuit monitors each output's current during a brief active period and encodes results as 16-bit serial data - eliminating need for extra I/O or ADC resources.

Can the STAP16DPS05XTTR drive multiple LEDs in series per channel?

Yes - its 20 V output voltage rating allows up to six 3.2 V white LEDs (19.2 V total) in series per channel at nominal current. Dropout voltage remains below 80 mV at 20 mA, ensuring stable regulation even with marginal headroom, and thermal design accommodates continuous 100 mA operation with proper PCB copper area.

Is the HTSSOP24 exposed pad electrically connected internally?

No - the exposed pad is electrically isolated from internal circuitry per ST's mechanical drawing; it must be soldered to a PCB ground plane solely for thermal conduction. Electrical grounding is achieved through Pin 1 (GND); connecting the pad to GND improves thermal resistance by 2.5× but is not required for functionality.

STAP16DPS05XTTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-TSSOP (0.173", 4.40mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Linear

Topology:: Shift Register

Internal Switch(s):: Yes

Number of Outputs:: 16

Voltage - Supply (Min):: 3V

Voltage - Supply (Max):: 5.5V

Voltage - Output:: 20V

Current - Output / Channel:: 100mA

Frequency:: 30MHz

Dimming:: -

Applications:: Backlight

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TSSOP-EP

STAP16DPS05XTTR FAQ

1.How can I place an order for STAP16DPS05XTTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STAP16DPS05XTTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STAP16DPS05XTTR reliable?

The price and inventory of STAP16DPS05XTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STAP16DPS05XTTR is usually 5 days.

3.What payment methods are accepted for STAP16DPS05XTTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STAP16DPS05XTTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STAP16DPS05XTTR?

STAP16DPS05XTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STAP16DPS05XTTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STAP16DPS05XTTR?

For technical support, including STAP16DPS05XTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STAP16DPS05XTTR requirements.

6.How does Aetrix verify that STAP16DPS05XTTR is sourced from the original manufacturer or authorized distributors?

All STAP16DPS05XTTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STAP16DPS05XTTR meets industry standards.

7.What is the process for return or replacement of STAP16DPS05XTTR?

All STAP16DPS05XTTR units undergo pre-shipment inspection (PSI). If there is an issue with STAP16DPS05XTTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STAP16DPS05XTTR part is unused and in its original packaging.

Return procedure for STAP16DPS05XTTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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