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

STMicroelectronics STP16CL596MTR

Name: STP16CL596MTR
Brand: STMicroelectronics
SKU: STP16CL596MTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16CL596MTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: STP16CL596MTR.pdf

Description:: IC LED DRIVER LINEAR 90MA 24SO

Quantity:: RFQ Add To RFQ list

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Inventory:3,894

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Product details

Overview

STP16CL596MTR from STMicroelectronics is a 16-bit constant-current LED sink driver in SO-24 package, designed for serial-in/parallel-out LED panel driving with adjustable output current (15–90 mA per channel), 25 MHz clock support, and 3.3 V microcontroller compatibility. It delivers precise current regulation across all 16 outputs using an external R_EXT resistor and supports daisy-chained operation for large displays.

For engineers reviewing the STP16CL596MTR datasheet, STP16CL596MTR pinout, STP16CL596MTR application, or STP16CL596MTR equivalent, key selection criteria include output current adjustability via R_EXT, thermal performance of SO-24 package, latch-enabled data staging, active-low output enable control, and falling-edge serial output timing for skew-tolerant cascading.

Technical Context

The device integrates a 16-bit shift register followed by a D-type storage latch, enabling independent data latching and output updating. Output drivers are regulated current sinks with ±3% channel-to-channel matching at V_O ≥ 0.7 V and ±10% unit-to-unit accuracy.

Its serial output (SDO) toggles on the falling edge of CLK - a deliberate timing architecture that mitigates inter-device clock skew in multi-device chains. The OE pin provides global, active-low output disable with 400 ns minimum pulse width, while LE controls synchronous latching of shift register contents to outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 constant-current sink outputs, each independently controllable via serial data
Output current range	15–90 mA per channel, set precisely by external R_EXT (e.g., 910 Ω → ~20.6 mA typ.)
Supply voltage	3.0–3.6 V, compatible with 3.3 V logic systems and low-voltage microcontrollers
Max clock frequency	25 MHz, enabling high-throughput LED data streaming for fast-refresh panels
Output voltage capability	Up to 16 V per channel, supporting series strings of multiple LEDs (e.g., 4× blue LEDs @ 3.2 V)
Current matching	±3% between outputs (all ON), ensuring uniform LED brightness across the display
Propagation delay	CLK→OUT: 250–280 ns (typ.), LE→OUT: 220–250 ns (typ.), enabling tight timing control

Pinout & Package

STP16CL596MTR uses the standard SO-24 (Small Outline-24) plastic package with gull-wing leads, 1.27 mm pitch, and 15.2–15.6 mm body length. Thermal resistance R_thJA is 75 °C/W, suitable for moderate-power LED driving without forced cooling.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Common return path for all internal logic and output current sinks
2 SDI	Serial data input	CMOS-compatible input accepting 3.3 V logic; data shifted in MSB-first on rising CLK edges
3 CLK	Serial clock input	Rising edge shifts data into shift register; falling edge updates SDO output
4 LE	Latch enable	Active-high signal transfers shift register contents to output latches; enables synchronized display updates
5–20 OUT0–OUT15	Constant-current sink outputs	Each drives one LED cathode; current magnitude set by R_EXT on pin 23
21 OE	Output enable	Active-low global shutdown; blanks all outputs without affecting internal register state
22 SDO	Serial data output	Falling-edge-aligned output for daisy-chaining to next STP16CL596 or compatible driver
23 R-EXT	Current setting terminal	Connects external resistor to GND to program full-scale output current (I_OUT ∝ 1/R_EXT)
24 VDD	Positive supply	3.0–3.6 V power rail; powers logic and current regulation circuitry

Key Features

Feature	Design Value
Falling-edge SDO timing	Enables robust daisy-chain operation under clock skew conditions common in large LED arrays
Adjustable current via R_EXT	Permits precise brightness calibration across panels and LED batches without firmware changes
16 V output compliance	Supports longer LED strings (e.g., 4–5 white/blue LEDs) without external boost circuitry
Integrated storage latch	Decouples data loading from display update, eliminating visible "ripple" during serial refresh
Low-voltage 3.3 V operation	Direct interface with modern low-power MCUs and FPGAs, reducing level-shifting complexity

Applications

LED Video Walls

Industrial HMI Panels

Use Scenario: High-density indoor video wall using RGB SMD LEDs with 1/16 scan rate.

IC Role / Device Role / Timing Role: Sink driver for column (cathode) control; receives serialized pixel data and latches row-synchronized frames.

Use Value: 25 MHz clock and falling-edge SDO allow >100 Hz frame rates across 16-wide daisy chains without skew-induced artifacts.

Use Scenario: Operator interface on factory-floor PLC-controlled machinery with status indicators and segmented displays.

IC Role / Device Role / Timing Role: Constant-current driver for discrete status LEDs and 7-segment digits; controlled via SPI-connected MCU.

Use Value: ±3% current matching ensures consistent LED intensity across dozens of indicators, improving operator readability.

Architectural Lighting Controls

Point-of-Sale Display Modules

Use Scenario: Tunable-white linear LED strips in commercial retail environments, driven by DALI- or DMX-linked controllers.

IC Role / Device Role / Timing Role: Current-regulated sink stage translating PWM-modulated digital commands into analog LED current.

Use Value: R_EXT-based current tuning allows precise binning compensation across LED lots, maintaining CCT consistency.

Use Scenario: Compact LCD + LED backlight module in self-checkout kiosks, requiring reliable, long-life illumination.

IC Role / Device Role / Timing Role: Backlight driver controlling 16 parallel LED strings behind edge-lit diffuser.

Use Value: 16 V output headroom supports series-connected LEDs even with aging forward-voltage drift, extending service life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB62706CFNG	16-bit sink driver with built-in thermal shutdown; fixed 15–100 mA range; no R_EXT adjustment	Requires external current-setting DAC or resistor network for fine tuning; lacks SDO skew tolerance	Preferred where overtemperature protection is mandatory and current calibration is handled upstream
PCA9622DP	I²C interface instead of serial shift; 16-channel, 25 mA max; integrated PWM dimming registers	Eliminates need for MCU bit-banging but adds I²C address management and slower update rates (~1 MHz effective)	Chosen when system already uses I²C infrastructure and per-channel PWM dimming is required

Compared with TB62706CFNG and PCA9622DP, STP16CL596MTR offers superior timing robustness in long daisy chains, direct R_EXT-based current calibration, and higher peak current capability - making it optimal for cost-sensitive, high-refresh-rate LED signage where MCU GPIO resources are constrained.

Availability

STP16CL596MTR is available at Aetrix Electronics and suitable for LED video walls, industrial HMI panels, architectural lighting controls, and point-of-sale display modules requiring stable component supply and long-term manufacturability.

Supply support for STP16CL596MTR 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, sensing, and control solutions for industrial, automotive, and consumer markets.

The STP16CL596 belongs to ST's LED driver portfolio targeting medium-voltage, constant-current panel applications - engineered for reliability in continuous-duty signage and human-machine interfaces operating from -40°C to +125°C.

FAQ

What is the function of the R-EXT pin?

The R-EXT pin connects an external resistor to ground to set the full-scale output current for all 16 channels. For example, a 910 Ω resistor yields ~20.6 mA typical per channel at V_DD = 3.3 V. Current scales inversely with resistance, enabling precise brightness calibration without changing firmware or layout.

How does the falling-edge SDO improve daisy-chain performance?

The SDO output changes state on the falling edge of CLK - not the rising edge - which decouples data propagation from the next device's sampling edge. This eliminates setup-time violations caused by clock skew across long chains, allowing reliable operation beyond 10+ devices without added delay compensation.

Can STP16CL596MTR drive white LEDs with forward voltage >3.3 V?

Yes. Each output supports up to 16 V compliance, enabling series connection of 4–5 white LEDs (V_F ≈ 3.2–3.5 V each). The IC regulates current regardless of total V_F, provided the sum remains ≤16 V and V_DD ≥3.0 V. No external boost circuitry is needed.

What is the minimum pulse width required for the LE and OE signals?

The LE (latch enable) requires a minimum high pulse width of 20 ns to reliably capture shift register data into the output latches. The OE (output enable) requires ≥400 ns low pulse width to ensure clean, simultaneous blanking of all 16 outputs - critical for flicker-free display updates in high-speed applications.

STP16CL596MTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-SOIC (0.295", 7.50mm Width)

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):: 3.6V

Voltage - Output:: 16V

Current - Output / Channel:: 90mA

Frequency:: 25MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SO

STP16CL596MTR FAQ

1.How can I place an order for STP16CL596MTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16CL596MTR 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 STP16CL596MTR reliable?

The price and inventory of STP16CL596MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16CL596MTR is usually 5 days.

3.What payment methods are accepted for STP16CL596MTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16CL596MTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16CL596MTR?

STP16CL596MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16CL596MTR 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 STP16CL596MTR?

For technical support, including STP16CL596MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16CL596MTR requirements.

6.How does Aetrix verify that STP16CL596MTR is sourced from the original manufacturer or authorized distributors?

All STP16CL596MTR 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 STP16CL596MTR meets industry standards.

7.What is the process for return or replacement of STP16CL596MTR?

All STP16CL596MTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16CL596MTR, 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 STP16CL596MTR part is unused and in its original packaging.

Return procedure for STP16CL596MTR:

1.Submit a request within 90 days.

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

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