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

STMicroelectronics STP16CPS05TTR

Name: STP16CPS05TTR
Brand: STMicroelectronics
SKU: STP16CPS05TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16CPS05TTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP16CPS05TTR.pdf

Description:: IC LED DRVR LINEAR 100MA 24TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP16CPS05TTR from STMicroelectronics is a 16-bit constant-current LED sink driver in TSSOP-24 package, designed for serially controlled LED panel displays. It delivers adjustable output current (5–100 mA per channel), supports 30 MHz clock input, operates from 3.0–5.5 V supply, and features auto power-saving mode that reduces quiescent current to ≤200 µA when latched data is inactive.

For engineers reviewing the STP16CPS05TTR datasheet, STP16CPS05TTR pinout, STP16CPS05TTR application, or STP16CPS05TTR equivalent, key selection criteria include output current accuracy (±1.5% between bits at 20–100 mA), 20 V output voltage capability for series LED strings, fast 40 ns current setup time, and compatibility with 3.3 V microcontrollers via TTL/CMOS-level inputs.

Technical Context

The device integrates a 16-bit serial-in/parallel-out shift register cascaded with a 16-bit D-type storage latch, enabling synchronous data loading and output updating. Its output stage comprises sixteen matched, thermally stable current sources with external R_EXT-programmed regulation and ±1.5% typical inter-channel current matching.

Auto power management operates autonomously: the IC enters shutdown mode (<200 µA I_DD) when no new data is latched, and resumes full operation within microseconds upon detection of valid LE-triggered data-no external control or reset required.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 independent constant-current sinks for LED anode-to-V_LED connection
Output current range	5–100 mA per channel, set by single external R_EXT resistor (e.g., 970 Ω → 20 mA)
Max clock frequency	30 MHz - enables high-speed LED refresh rates up to ~1.88 MHz per channel in cascade
Output voltage compliance	Up to 20 V - supports driving 6+ standard white LEDs (3.2 V VF) in series per channel
Current accuracy	±1.5% typical between outputs at same V_DD/T - ensures uniform LED brightness across display rows
Quiescent current (shutdown)	120–200 µA at V_DD = 3.3–5 V - eliminates standby power waste in static display segments
Propagation delay (CLK→OUT)	17.5–55 ns (V_DD = 5 V / 3.3 V) - enables precise timing control in high-refresh-rate signage

Pinout & Package

TSSOP-24 package: 4.4 mm × 7.8 mm body, 0.65 mm pitch, exposed pad recommended for thermal relief (R_thJA = 55 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Common return for all current sinks and logic; must connect to low-impedance PCB plane
2 SDI	Serial data input	CMOS/TTL-compatible input accepting 3.3 V logic; feeds shift register MSB-first
3 CLK	Serial clock input	Edge-triggered clock (max 30 MHz); rising edge shifts data into internal register
4 LE	Latch enable	Level-sensitive (high-active); transfers shift register contents to output latches
5–20 OUT0–OUT15	Constant-current sink outputs	Each drives LED cathode; current magnitude set by R_EXT, voltage headroom up to 20 V
21 OE	Output enable (active low)	Global disable: forces all outputs OFF regardless of latch state; used for blanking/pulse-width dimming
22 SDO	Serial data output	Daisy-chain output; forwards shifted-out bit for multi-device cascading
23 R-EXT	Current setting reference	Connects external precision resistor to set full-scale output current (I_OUT ∝ 1/R_EXT)
24 VDD	Power supply	3.0–5.5 V input; powers logic and current sources; decoupling capacitor required near pin

Key Features

Feature	Design Value
Auto power-saving mode	Reduces supply current to <200 µA during static display periods without firmware intervention
16-bit current-matched outputs	±1.5% typical inter-channel current variation ensures consistent LED luminance across panels
Single-resistor current programming	One external R_EXT sets identical full-scale current for all 16 channels - simplifies BOM and calibration
20 V output voltage capability	Supports longer LED strings per channel, reducing per-panel driver count and PCB routing complexity
30 MHz serial interface	Enables >1 kHz full-panel update rates even with 16×16 pixel matrices using daisy-chained devices

Applications

Indoor LED Video Walls

Automotive Interior Lighting Control

Use Scenario: High-density indoor signage with 16×N pixel modules requiring uniform brightness and low power in standby.

IC Role / Device Role / Timing Role: LED sink driver managing 16 parallel columns per module; receives serialized pixel data via SPI-like interface.

Use Value: Auto power-saving cuts idle power by >99% versus always-on drivers, extending system thermal margin and reducing heatsink requirements.

Use Scenario: RGB ambient lighting strips in vehicle cabins with dynamic color sequencing and dimming profiles.

IC Role / Device Role / Timing Role: Constant-current sink controlling individual LED segments; synchronized via MCU's GPIO-timed LE/CLK signals.

Use Value: 20 V output compliance allows direct drive of 5–6串联 white LEDs per channel without boost converters, lowering bill-of-materials cost.

Industrial Panel Meters

Point-of-Sale Display Backlighting

Use Scenario: 7-segment or dot-matrix displays in factory HMIs where reliability and long-term current stability are critical.

IC Role / Device Role / Timing Role: Static segment driver updated infrequently; leverages auto-shutdown during display hold states.

Use Value: ±1.5% inter-channel current matching prevents visible digit brightness mismatch over temperature (−40°C to +125°C).

Use Scenario: Edge-lit LCD backlights in retail kiosks requiring smooth PWM dimming and low EMI.

IC Role / Device Role / Timing Role: Current sink for parallel LED strings; OE pin used for hardware PWM dimming at kHz frequencies.

Use Value: 40 ns current setup time enables clean, jitter-free PWM edges - eliminating visual flicker at 1–5 kHz dimming frequencies.

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 integrated PWM grayscale control (16-bit per channel); no auto power-save; requires external clock for PWM	Better suited for high-fidelity grayscale video; lacks autonomous low-power mode	Select when per-channel PWM intensity control is required over simple on/off or global dimming
MAX6966ATL+	16-bit sink with I²C interface, programmable open-drain/constant-current modes, and thermal shutdown; higher V_OUT limit (25 V)	Preferred for systems needing bus-addressable configuration and fault reporting	Select when I²C configurability, diagnostics, or higher voltage headroom outweighs cost and footprint sensitivity

Compared with TLC59283RTJR and MAX6966ATL+, the STP16CPS05TTR offers lower system-level cost and simpler timing control due to its native serial-shift architecture and autonomous power management-ideal for fixed-pattern or low-update-rate LED arrays where per-channel PWM is unnecessary.

Availability

STP16CPS05TTR is available at Aetrix Electronics and suitable for indoor LED video walls, automotive interior lighting control, and industrial panel meters requiring stable component supply and long-term production support.

Supply support for STP16CPS05TTR 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 power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The STP16CPS05 belongs to ST's LED driver portfolio targeting cost-sensitive, high-reliability display applications-designed specifically for serially driven LED panels with emphasis on current matching, thermal robustness, and autonomous power efficiency.

FAQ

What is the minimum supply voltage required for reliable operation of STP16CPS05TTR?

The STP16CPS05TTR operates reliably from 3.0 V to 5.5 V. At 3.0 V, all specifications-including 30 MHz max clock frequency, 5–100 mA output current range, and logic-level compatibility-are guaranteed per the datasheet's recommended operating conditions. Below 3.0 V, output current regulation degrades and propagation delays increase beyond specification limits.

How does the auto power-saving feature activate and recover?

The auto power-saving feature activates automatically when no new data is latched (LE remains low for >100 µs), reducing supply current to ≤200 µA. Recovery occurs within 1 µs of a valid LE high pulse-no external reset or initialization sequence is needed. The first output transition after wake-up exhibits a 40 ns current setup time, as specified in the datasheet.

Can STP16CPS05TTR drive LEDs with forward voltages exceeding 5 V per string?

Yes. Each output supports up to 20 V compliance voltage, allowing series connection of multiple LEDs (e.g., six 3.2 V white LEDs = 19.2 V). The current source maintains regulation as long as V_OUT ≤ 20 V and V_DD − V_OUT ≥ dropout voltage (~0.3 V at 20 mA), verified across the full operating temperature range (−40°C to +125°C).

Is the exposed pad on the TSSOP-24 package electrically connected?

Yes-the exposed pad on the STP16CPS05TTR's TSSOP-24 package is internally connected to GND and must be soldered to a dedicated PCB copper land tied to the system ground plane. This connection reduces thermal resistance by ~15 °C/W (R_thJA drops from 55 to ~40 °C/W), improving reliability under sustained 100 mA/channel operation.

STP16CPS05TTR 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:: 100mA

Frequency:: 30MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-TSSOP

STP16CPS05TTR FAQ

1.How can I place an order for STP16CPS05TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16CPS05TTR 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 STP16CPS05TTR reliable?

The price and inventory of STP16CPS05TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16CPS05TTR is usually 5 days.

3.What payment methods are accepted for STP16CPS05TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16CPS05TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16CPS05TTR?

STP16CPS05TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16CPS05TTR 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 STP16CPS05TTR?

For technical support, including STP16CPS05TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16CPS05TTR requirements.

6.How does Aetrix verify that STP16CPS05TTR is sourced from the original manufacturer or authorized distributors?

All STP16CPS05TTR 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 STP16CPS05TTR meets industry standards.

7.What is the process for return or replacement of STP16CPS05TTR?

All STP16CPS05TTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16CPS05TTR, 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 STP16CPS05TTR part is unused and in its original packaging.

Return procedure for STP16CPS05TTR:

1.Submit a request within 90 days.

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

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