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

STMicroelectronics STP1612PW05XTTR

Name: STP1612PW05XTTR
Brand: STMicroelectronics
SKU: STP1612PW05XTTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP1612PW05XTTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP1612PW05XTTR.pdf

Description:: IC LED DRVR LIN PWM 60MA 24TSSOP

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Product details

Overview

STP1612PW05XTTR from STMicroelectronics is a 16-channel constant-current sink LED driver with 16-bit PWM grayscale control, 8-bit global current gain (256 steps), open/short LED fault detection, and 20 V output voltage capability. It operates from 3.3 V or 5 V supply, supports up to 30 MHz serial clock, and delivers per-channel current from 3 mA to 60 mA via single R_EXT. Used in high-fidelity RGB backlighting and video display panels where flicker suppression and thermal reliability are critical.

For engineers reviewing the STP1612PW05XTTR datasheet, STP1612PW05XTTR pinout, STP1612PW05XTTR application, or STP1612PW05XTTR equivalent, key selection criteria include e-PWM ghost-effect reduction, dual-range 8-bit gain control, real-time LED error reporting via SPI, and TSSOP-24 exposed-pad thermal performance for sustained 60 mA/channel operation.

Technical Context

The device integrates a dual-mode 16-/256-bit shift register and configurable 12/16-bit PWM counters synchronized to PWCLK. Its e-PWM algorithm partitions grayscale cycles into dithered MSB and LSB segments across refresh frames to eliminate visual artifacts without increasing frame rate.

Open/short detection runs in <1 µs during active drive, reporting 16-channel status via SDO after "Read Error Status Code" command. Thermal shutdown activates at >150 °C junction temperature, and UVLO disables outputs below 3.0 V V_DD, ensuring robust operation in industrial LED systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 constant-current sink outputs, each programmable 3–60 mA via single R_EXT
PWM resolution	Selectable 12-bit (4096-step) or 16-bit (65536-step) grayscale per channel
Current gain control	8-bit (256-step) global adjustment with two selectable ranges for fine brightness tuning
LED fault detection	Simultaneous open-circuit and short-circuit detection per channel, reported via serial readback
Output voltage rating	20 V max - enables driving 5–6 series LEDs at typical forward voltages
Thermal resistance	37.5 °C/W (junction-to-ambient) with exposed pad soldered to PCB ground plane
Max clock frequency	30 MHz serial interface clock - supports fast configuration and grayscale updates

Pinout & Package

TSSOP-24 package with thermally enhanced exposed pad (pin 24 is VDD; exposed pad must be electrically connected to PCB ground plane for optimal thermal performance).

Pin/Terminal	Circuit Role	Design Meaning
1, 24, Exposed Pad	GND / VDD / Thermal Plane	Ground reference, power input, and primary heat dissipation path via soldered copper land
2 (SDI)	Serial data input	CMOS-level input accepting command/data packets for configuration, PWM, and gain registers
3 (CLK)	Serial clock input	Rising-edge-triggered shift clock; max 30 MHz; controls data latching and command execution timing
4 (LE)	Data latch strobe	Edge-sensitive control signal defining command type (latch, read, write, reset) based on CLK count during assertion
5–20 (OUT0–OUT15)	Constant-current sink outputs	16 independent N-channel sinks; each drives LED cathode to GND with matched current accuracy ±6%
21 (PWCLK)	Grayscale PWM clock	External reference clock for PWM counter; determines grayscale update rate and e-PWM dither timing
22 (SDO)	Serial data output	Three-state output for reading configuration register, error status code, or device ID
23 (R-EXT)	Current-setting resistor input	Analog input biasing internal DAC; sets full-scale current I_OUT = 1.24 V × G / R_EXT

Key Features

Feature	Design Value
e-PWM ghost-effect reduction	Scrambled PWM algorithm dithers MSB/LSB across frames to eliminate visible flicker in static images
Programmable staggered output delay	Configurable per-output turn-on delay (40/80/120 ns increments) reduces peak inrush current and EMI
Real-time LED diagnostics	Detects open/short faults in <1 µs while driving; reports 16-bit status code via SDO without interrupting display
Thermal protection with flag	Automatic channel shutdown above 150 °C; thermal error flag bit (bit 14) readable in configuration register
Drop-in compatibility	Pins, footprint, and command set match STP16CP\S\DP05 series - enables direct replacement in existing designs

Applications

RGB Backlighting

Video Display Panels

Use Scenario: Driving high-resolution LCD backlights with dynamic local dimming in commercial signage and medical displays.

IC Role / Device Role / Timing Role: Constant-current sink managing 16 parallel LED strings; PWM timing synchronized to display refresh to prevent scan-line artifacts.

Use Value: 16-bit grayscale and e-PWM ensure smooth luminance gradients and eliminate ghosting during rapid content changes.

Use Scenario: Large-format indoor LED video walls requiring uniform brightness and long-term reliability.

IC Role / Device Role / Timing Role: Primary LED driver per module; open/short detection enables predictive maintenance without panel downtime.

Use Value: Real-time fault reporting via SDO allows firmware to remap failed channels or trigger alerts before visible pixel defects occur.

Architectural Lighting

Stage & Entertainment Fixtures

Use Scenario: Tunable-white and color-mixing fixtures in smart building installations with DALI or DMX control.

IC Role / Device Role / Timing Role: Current-controlled RGBW channel driver; 8-bit gain adjusts global white point without reprogramming PWM values.

Use Value: Dual-range gain provides precise CCT tuning across 2700K–6500K while maintaining 16-bit color fidelity.

Use Scenario: High-brightness moving-head lights requiring thermal resilience and flicker-free motion rendering.

IC Role / Device Role / Timing Role: High-current sink (60 mA/channel) with exposed-pad thermal design sustaining continuous operation at ambient >85 °C.

Use Value: 37.5 °C/W R_thJA and thermal shutdown prevent derating during extended high-intensity scenes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC5947	24-channel, 12-bit PWM only; no e-PWM or open/short detection; 17 V output rating	Lacks real-time fault reporting and ghost-reduction; suited for lower-voltage, higher-channel-count signage	Choose when channel count >16 is required and diagnostic capability is secondary
IS31FL3731	18-channel, 8-bit PWM + 6-bit current control; integrated auto-breathing; 18 V output rating	No open/short detection; uses I²C interface instead of SPI; optimized for animated icon displays	Prefer for space-constrained UI lighting with built-in animation engine, not video-grade grayscale

Compared with TLC5947 and IS31FL3731, STP1612PW05XTTR uniquely combines 16-bit grayscale, e-PWM artifact suppression, per-channel fault visibility, and 20 V drive in a thermally optimized TSSOP package-making it the only option for high-reliability, flicker-critical LED video applications.

Availability

STP1612PW05XTTR is available at Aetrix Electronics and suitable for RGB backlighting, video display panels, architectural lighting, and stage lighting applications requiring stable component supply and long-term production continuity.

Supply support for STP1612PW05XTTR 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 STP1612PW05 series belongs to ST's high-performance LED driver product line, engineered specifically for demanding visual applications requiring precise grayscale control, thermal resilience, and real-time system diagnostics.

FAQ

What is the function of the exposed pad on the STP1612PW05XTTR package?

The exposed pad is an integral part of the thermal management system and must be soldered directly to a PCB copper land connected to ground. It reduces thermal resistance to 37.5 °C/W, enabling sustained 60 mA/channel operation without thermal throttling. Leaving it unconnected degrades thermal performance by >35% and risks premature thermal shutdown.

How does e-PWM differ from standard PWM in the STP1612PW05XTTR?

e-PWM splits grayscale data into MSB and LSB segments, distributing MSB updates across multiple refresh cycles using dithering algorithms. This eliminates visible flicker and ghosting during static or slow-motion content-unlike standard PWM, which updates all bits per frame and causes temporal aliasing at low brightness levels.

Can the STP1612PW05XTTR detect LED faults while actively driving?

Yes. Open and short detection occurs in <1 µs during normal operation with all 16 channels enabled. The diagnostic result is stored in a dedicated error status register and retrieved via the "Read Error Status Code" command on SDO-no interruption to PWM output or display timing is required.

What is the minimum external resistor value for 60 mA output current?

Using I_OUT = 1.24 V × G / R_EXT and maximum gain (G = 1), R_EXT = 1.24 V / 0.06 A = 20.67 kΩ. ST recommends ≥22 kΩ for margin; values below 20 kΩ risk exceeding absolute maximum ratings and invalidating current accuracy specs.

STP1612PW05XTTR 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:: Obsolete

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:: 60mA

Frequency:: 30MHz

Dimming:: PWM

Applications:: Backlight

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TSSOP-EP

STP1612PW05XTTR FAQ

1.How can I place an order for STP1612PW05XTTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP1612PW05XTTR 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 STP1612PW05XTTR reliable?

The price and inventory of STP1612PW05XTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP1612PW05XTTR is usually 5 days.

3.What payment methods are accepted for STP1612PW05XTTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP1612PW05XTTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP1612PW05XTTR?

STP1612PW05XTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP1612PW05XTTR 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 STP1612PW05XTTR?

For technical support, including STP1612PW05XTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP1612PW05XTTR requirements.

6.How does Aetrix verify that STP1612PW05XTTR is sourced from the original manufacturer or authorized distributors?

All STP1612PW05XTTR 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 STP1612PW05XTTR meets industry standards.

7.What is the process for return or replacement of STP1612PW05XTTR?

All STP1612PW05XTTR units undergo pre-shipment inspection (PSI). If there is an issue with STP1612PW05XTTR, 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 STP1612PW05XTTR part is unused and in its original packaging.

Return procedure for STP1612PW05XTTR:

1.Submit a request within 90 days.

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

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