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

STMicroelectronics STP16DPP05XTTR

Name: STP16DPP05XTTR
Brand: STMicroelectronics
SKU: STP16DPP05XTTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16DPP05XTTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP16DPP05XTTR.pdf

Description:: IC LED DRVR LINEAR 40MA 24TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP16DPP05XTTR from STMicroelectronics is a 16-bit constant-current LED sink driver IC designed for LED panel displays and signage systems. It delivers precise 3–40 mA per channel via external R-EXT resistor programming, features integrated open/short LED error detection without extra pins, operates from 3 V to 5.5 V supply, supports 30 MHz serial clocking, and uses a thermally enhanced TSSOP24 exposed pad package for high-density LED arrays.

For engineers reviewing the STP16DPP05XTTR datasheet, STP16DPP05XTTR pinout, STP16DPP05XTTR application, or STP16DPP05XTTR equivalent, key selection criteria include output current accuracy (±1% between bits), error detection logic timing sequence, OE/DM2 and LE/DM1 dual-function pin behavior, thermal resistance (37.5 °C/W with exposed pad soldered), and compatibility with 3.3 V microcontrollers in cascaded LED driver configurations.

Technical Context

The STP16DPP05XTTR integrates a 16-bit serial-in/parallel-out shift register feeding a 16-bit D-type storage latch, followed by sixteen matched current-regulated sink outputs. Its error detection mode uses dedicated timing sequences on OE/DM2 and LE/DM1 to identify open, short-to-GND, or short-to-VO conditions - all reported serially via SDO without increasing pin count.

Output current is set by an external R-EXT resistor (e.g., 497 Ω for 40 mA), with dropout voltage as low as 36 mV at 3 mA and 724 mV at 40 mA (VDD = 3.3 V). Propagation delays are tightly specified: tPLH1 = 18.5–44.5 ns (VDD = 3.3–5 V), enabling reliable high-speed cascade operation up to 30 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 independent constant-current sink outputs for driving LED strings
Output current range	3–40 mA per channel, adjustable via external R-EXT resistor
Current accuracy	±1% between bits, ±2% between ICs at 25 °C
Max output voltage	20 V - supports up to 6 white LEDs (3.2 V each) in series per channel
Serial clock frequency	30 MHz - enables fast data refresh for high-refresh-rate LED panels
Thermal resistance	37.5 °C/W (junction-to-ambient) with exposed pad soldered to PCB ground plane
Error detection	Detects open, short-to-GND, and short-to-VO conditions using OE/DM2 and LE/DM1 control sequence

Pinout & Package

STP16DPP05XTTR is housed in a 24-pin TSSOP package with exposed thermal pad (JEDEC MO-153 variant), requiring the exposed pad to be soldered directly to a PCB copper land for optimal thermal performance (R_thJA = 37.5 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Primary return path for all output currents and internal logic; connects to PCB ground plane
2 SDI	Serial data input	Accepts 3.3 V–compatible logic-level data for shift register loading
3 CLK	Clock input	Drives shift register on rising edge; supports up to 30 MHz operation
4 LE/DM1	Latch enable / Detect Mode 1	Level-sensitive control: high = load new data; used with OE/DM2 to enter/exit error detection mode
5–20 OUT0–OUT15	Constant-current sink outputs	Each drives one LED cathode; sinks 3–40 mA with <1% channel-to-channel mismatch
21 OE/DM2	Output enable / Detect Mode 2	Active-low output control; dual-function pin for entering error detection mode via timing sequence
22 SDO	Serial data output	Shifts out error status bits (16-bit) or normal data during cascade; compatible with 3.3 V MCU inputs
23 R-EXT	Current-setting resistor terminal	Connects external resistor to set output current; I_OUT ≈ 12.5 V / R_EXT
24 VDD	Supply voltage	3.0–5.5 V input; powers logic and output stages; decoupling capacitor required near pin

Key Features

Feature	Design Value
Integrated open/short LED detection	Eliminates need for external sense resistors or ADC monitoring; reports results serially via SDO
TSSOP24 with exposed thermal pad	Reduces junction-to-ambient thermal resistance by 32% vs. standard TSSOP24 (55 → 37.5 °C/W)
3.3 V logic-compatible interface	VIH = 0.7 × VDD, VIL = 0.3 × VDD - ensures direct connection to 3.3 V MCUs without level shifters
Adjustable brightness control	PWM dimming via OE/DM2 pin enables 0–100% LED intensity control without altering current setting
Cascade-ready serial interface	SDI/SDO daisy-chain capability supports multi-chip LED driver stacks with single MCU data line

Applications

LED Video Walls

Industrial HMI Panels

Use Scenario: High-resolution indoor LED video walls requiring uniform brightness across thousands of pixels.

IC Role / Device Role / Timing Role: Constant-current sink driver managing 16 LED cathodes per chip; synchronized via 30 MHz clock for frame-rate-critical updates.

Use Value: ±1% current matching ensures pixel-to-pixel luminance consistency; error detection flags dead LEDs before visible panel defects occur.

Use Scenario: Factory-floor human-machine interface panels with status indicators, warning lights, and segmented displays.

IC Role / Device Role / Timing Role: LED driver with built-in fault reporting for predictive maintenance; OE/DM2 enables real-time dimming and diagnostics over same control bus.

Use Value: Short/open detection reduces field service time; 20 V output headroom supports diverse LED types (red, green, white) on shared PCB design.

Transportation Signage

Architectural LED Lighting

Use Scenario: Outdoor bus/train destination signs operating in wide temperature range (−40 to +125 °C).

IC Role / Device Role / Timing Role: Robust LED sink driver with thermal shutdown (170 °C) and extended operating junction range (−40 to +150 °C).

Use Value: Exposed pad package maintains safe junction temperature under continuous 40 mA/channel load; error detection prevents false "off" indications due to wiring faults.

Use Scenario: Linear architectural LED strips for façade lighting, requiring long-chain daisy-chain configuration.

IC Role / Device Role / Timing Role: Cascadable 16-bit sink driver enabling >1000-LED control from single MCU SPI port with minimal routing.

Use Value: 30 MHz clock tolerance allows fast refresh even in 50+ chip chains; R-EXT programmability simplifies BOM management across varying LED forward voltages.

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-bit sink driver with 3–120 mA range; no integrated open/short detection; requires external fault monitoring	Higher max current but lacks autonomous error reporting; needs additional circuitry for LED health monitoring	Select when higher current (>40 mA) is required and system-level fault detection is already implemented
MAX7219CWG+	8-bit sink driver with SPI interface and built-in BCD decode; includes scan-limiting and intensity control registers	Designed for 7-segment/matrix displays, not linear LED strings; limited to 40 mA total (not per channel)	Prefer for alphanumeric displays with multiplexed segments; unsuitable for high-channel-count linear LED arrays

Compared with TLC59283RTJR and MAX7219CWG+, the STP16DPP05XTTR uniquely combines per-channel 40 mA capability, ±1% matching, and pin-efficient error detection-making it optimal for reliability-critical LED panels where early fault identification and thermal efficiency are mandatory.

Availability

STP16DPP05XTTR is available at Aetrix Electronics and suitable for LED video walls, industrial HMI panels, transportation signage, and architectural lighting systems requiring stable component supply, long-term manufacturability, and automotive-grade thermal resilience.

Supply support for STP16DPP05XTTR 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.

The STP16DPP05XTTR belongs to ST's LED driver portfolio targeting high-reliability display systems, engineered specifically to simplify thermal management and reduce diagnostic overhead in large-scale LED installations.

FAQ

What is the minimum R-EXT value required for 40 mA output current?

The STP16DPP05XTTR achieves 40 mA per channel with R-EXT = 497 Ω (typical), as confirmed in Table 11 of the datasheet. Using a lower resistance risks exceeding absolute maximum output current (50 mA) and may degrade current matching or thermal performance. A 1% tolerance metal-film resistor is recommended for precision.

How does the error detection mode interact with normal operation?

Error detection mode is entered via a precise 5-cycle timing sequence on OE/DM2 and LE/DM1, then exits after detection completes and a second 5-cycle resume sequence is applied. During detection, outputs drive LEDs to measure current/voltage signatures - no data latching or shifting occurs until returning to normal mode. The SDO pin outputs 16-bit status bits identical in format to normal data.

Can STP16DPP05XTTR drive LEDs with forward voltage above 3.3 V?

Yes - the device supports up to 20 V output voltage per channel, enabling series connection of up to six typical white LEDs (3.2 V each) or eight red LEDs (2.2 V each). This headroom remains valid across the full operating temperature range (−40 to +125 °C) and supply range (3.0–5.5 V).

Is the exposed thermal pad electrically isolated or grounded?

The exposed pad is internally connected to GND and must be soldered to a PCB copper land tied to the system ground plane. Doing so achieves the rated 37.5 °C/W thermal resistance; leaving it floating or unconnected degrades thermal performance by >2× and risks thermal shutdown under sustained 40 mA/channel load.

STP16DPP05XTTR 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:: 40mA

Frequency:: 30MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TSSOP-EP

STP16DPP05XTTR FAQ

1.How can I place an order for STP16DPP05XTTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16DPP05XTTR 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 STP16DPP05XTTR reliable?

The price and inventory of STP16DPP05XTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16DPP05XTTR is usually 5 days.

3.What payment methods are accepted for STP16DPP05XTTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16DPP05XTTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16DPP05XTTR?

STP16DPP05XTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16DPP05XTTR 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 STP16DPP05XTTR?

For technical support, including STP16DPP05XTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16DPP05XTTR requirements.

6.How does Aetrix verify that STP16DPP05XTTR is sourced from the original manufacturer or authorized distributors?

All STP16DPP05XTTR 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 STP16DPP05XTTR meets industry standards.

7.What is the process for return or replacement of STP16DPP05XTTR?

All STP16DPP05XTTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16DPP05XTTR, 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 STP16DPP05XTTR part is unused and in its original packaging.

Return procedure for STP16DPP05XTTR:

1.Submit a request within 90 days.

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

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