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

STMicroelectronics STP16DPP05TTR

Name: STP16DPP05TTR
Brand: STMicroelectronics
SKU: STP16DPP05TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16DPP05TTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP16DPP05TTR.pdf

Description:: IC LED DRVR LINEAR 40MA 24TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP16DPP05TTR from STMicroelectronics is a 16-bit constant-current LED sink driver IC with integrated open/short error detection, serial-in/parallel-out shift register architecture, and 3–40 mA per-channel output current programmable via external resistor R-EXT. It operates from 3 V to 5.5 V supply, supports 30 MHz clock frequency, and drives LED panels in signage, automotive interior lighting, and industrial HMI displays.

For engineers reviewing the STP16DPP05TTR datasheet, STP16DPP05TTR pinout, STP16DPP05TTR application, or STP16DPP05TTR equivalent, this page delivers verified electrical parameters, thermal package data for TSSOP24 exposed pad, error detection timing sequences, and real-world design implications of OE/DM2 and LE/DM1 dual-function pins.

Technical Context

The device integrates a 16-bit shift register feeding a 16-bit D-type storage latch, followed by sixteen matched current-regulated sink outputs. Output current accuracy is ±1% between channels and ±2% across devices at 25 °C, with dropout voltage as low as 36 mV at 3 mA (VDD = 3.3 V).

Error detection operates in three-phase mode using OE/DM2 and LE/DM1 pins without additional I/O: Phase 1 enters detection via 5-clock logic sequence; Phase 2 samples output current (IODEC) and voltage (VO) to distinguish open, short-to-GND, or short-to-VLED faults; Phase 3 exits via dedicated 5-clock resume sequence.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 independent constant-current sink outputs, each programmable 3–40 mA via R-EXT resistor.
Supply voltage	3.0 V to 5.5 V - enables direct interfacing with 3.3 V MCUs without level-shifting.
Max clock frequency	30 MHz - supports high-speed LED refresh in cascaded display systems.
Output voltage rating	20 V - allows driving up to 6 standard red LEDs (3.2 V each) in series per channel.
Current accuracy	±1% between bits, ±2% across ICs - ensures uniform LED brightness across panels.
Thermal resistance	R_thJA = 37.5 °C/W (exposed pad soldered) - enables 2.5× better heat dissipation vs standard TSSOP.
Error detection	Detects open, short-to-GND, and short-to-VLED on all 16 outputs using internal analog comparators - no external circuitry required.

Pinout & Package

TSSOP24 exposed pad package (JEDEC MO-153AC), 7.8 mm × 4.4 mm footprint, 0.65 mm pitch; exposed thermal pad must be soldered to PCB ground plane 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 16 output currents and internal logic; connects to exposed pad for thermal conduction.
2 SDI	Serial data input	Accepts 16-bit LED on/off data stream synchronized to CLK; compatible with 3.3 V CMOS logic.
3 CLK	Clock input	Drives shift register; 30 MHz max frequency enables <33 ns bit period for full 16-bit load.
4 LE/DM1	Latch input / Detect Mode 1	Level-sensitive control: high = latch new data; low = hold; dual-function entry trigger for error detection phase.
5–20 OUT0–OUT15	Constant-current sink outputs	Each provides regulated 3–40 mA sink current; 20 V max output voltage supports multi-LED strings.
21 OE/DM2	Output enable / Detect Mode 2	Active-low output control; also serves as secondary trigger for error detection entry/resume sequences.
22 SDO	Serial data output	Shifts out 16-bit error status (1 bit per channel) after detection; matches SDI timing format.
23 R-EXT	Current-setting resistor input	Connects external resistor to set all 16 output currents simultaneously (e.g., 497 Ω → 40 mA).
24 VDD	Power supply	3.0–5.5 V logic and output stage supply; internal LDO not used - direct rail connection required.

Key Features

Feature	Design Value
Integrated error detection	Single-chip open/short fault identification on all 16 outputs using internal analog sensing - eliminates external sense resistors and ADCs.
Thermally enhanced package	TSSOP24 with exposed pad reduces junction-to-ambient thermal resistance to 37.5 °C/W - enables 2× higher continuous output current vs standard TSSOP.
3.3 V MCU compatibility	All inputs meet 3.3 V CMOS thresholds (VIH ≥ 0.7×VDD, VIL ≤ 0.3×VDD); no level translators needed for STM32 or similar microcontrollers.
Programmable brightness	PWM dimming via OE/DM2 pin enables 0–100% LED intensity control without altering current-setting resistor.
Cascade-ready interface	SDI/SDO daisy-chain capability supports multi-device LED arrays with single MCU SPI port - timing validated up to 30 MHz.

Applications

Automotive Interior Lighting

Industrial HMI Panels

Use Scenario: Driving segmented LED backlighting for instrument clusters and center consoles with fault monitoring.

IC Role / Device Role / Timing Role: Constant-current sink driver with real-time open/short detection on each LED segment to prevent partial panel failure.

Use Value: Eliminates need for discrete current sources and external fault monitoring circuits - reduces BOM count by ≥12 components per 16-LED group.

Use Scenario: Controlling status indicator LEDs on PLC I/O modules and operator terminals under wide temperature range.

IC Role / Device Role / Timing Role: Serial-controlled LED driver with 3.3 V logic compatibility and -40 °C to +125 °C operating range.

Use Value: Enables reliable LED operation at full spec across industrial ambient temperatures without derating or heatsinking.

Architectural Signage

Medical Device Displays

Use Scenario: Powering high-density LED lettering and dynamic message boards requiring uniform brightness and long-term reliability.

IC Role / Device Role / Timing Role: 16-channel constant-current driver with ±1% channel matching and 20 V output headroom for series-connected LEDs.

Use Value: Maintains consistent luminance across large-format displays - critical for brand-color fidelity in commercial signage.

Use Scenario: Driving status and alarm LEDs on diagnostic equipment where visual reliability is safety-critical.

IC Role / Device Role / Timing Role: Fault-detecting LED driver that reports open/short conditions via SDO to host MCU for immediate UI alert.

Use Value: Provides self-test capability during power-up and runtime - satisfies IEC 62304 Class B software safety requirements.

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; uses internal current reference (no R-EXT).	Lacks fault reporting - requires external monitoring for safety-critical LED systems.	Select when higher max current (120 mA) is needed and fault detection is handled externally.
MAX6966ATL+T	16-bit sink driver with I²C interface; includes thermal shutdown but no per-channel open/short detection.	I²C control simplifies MCU integration but limits update rate vs SPI-compatible STP16DPP05TTR.	Select for systems prioritizing bus simplicity over real-time fault visibility and high-speed refresh.

Compared with TLC59283RTJR and MAX6966ATL+T, the STP16DPP05TTR uniquely combines per-output fault detection, 30 MHz serial throughput, and thermally optimized TSSOP-exposed-pad packaging - making it optimal for high-reliability, high-density LED systems requiring embedded diagnostics.

Availability

STP16DPP05TTR is available at Aetrix Electronics and suitable for automotive interior lighting, industrial HMI panels, architectural signage, and medical device displays requiring stable component supply and long-term lifecycle support.

Supply support for STP16DPP05TTR 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 microcontrollers, power ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STP16DPP05 belongs to ST's LED driver portfolio targeting high-reliability panel illumination, emphasizing integrated diagnostics, thermal efficiency, and seamless 3.3 V MCU interoperability.

FAQ

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

The datasheet specifies 497 Ω as the R-EXT value for 40 mA output current at 25 °C (Table 11). At VDD = 3.3 V or 5.0 V, this resistor sets nominal current across all 16 channels. Lower values increase current but reduce compliance voltage margin - 497 Ω is the validated minimum for full 40 mA specification.

How does the error detection mode interact with normal operation?

Error detection is a separate operational mode entered via a precise 5-clock sequence on OE/DM2 and LE/DM1. It suspends normal LED driving for ~1 µs per channel to measure IODEC and VO, then shifts 16-bit status out via SDO. Normal operation resumes only after a dedicated 5-clock exit sequence - no overlap or concurrent operation is possible.

Can STP16DPP05TTR drive LEDs in series across multiple outputs?

No - each OUT0–OUT15 is an independent constant-current sink with common cathode connection. LEDs must be wired in parallel per channel (anode to supply, cathode to output). The 20 V output voltage rating supports up to six 3.2 V LEDs in series *per channel*, not across channels.

Is the exposed thermal pad electrically isolated or grounded?

The exposed pad is electrically connected to GND internally and must be soldered to a PCB copper pour tied to system ground. This provides both thermal conduction (reducing R_thJA to 37.5 °C/W) and electrical grounding for noise immunity and ESD protection - floating or insulated pads void thermal and electrical specifications.

STP16DPP05TTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

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

STP16DPP05TTR FAQ

1.How can I place an order for STP16DPP05TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16DPP05TTR 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 STP16DPP05TTR reliable?

The price and inventory of STP16DPP05TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16DPP05TTR is usually 5 days.

3.What payment methods are accepted for STP16DPP05TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16DPP05TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16DPP05TTR?

STP16DPP05TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16DPP05TTR 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 STP16DPP05TTR?

For technical support, including STP16DPP05TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16DPP05TTR requirements.

6.How does Aetrix verify that STP16DPP05TTR is sourced from the original manufacturer or authorized distributors?

All STP16DPP05TTR 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 STP16DPP05TTR meets industry standards.

7.What is the process for return or replacement of STP16DPP05TTR?

All STP16DPP05TTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16DPP05TTR, 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 STP16DPP05TTR part is unused and in its original packaging.

Return procedure for STP16DPP05TTR:

1.Submit a request within 90 days.

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

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