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

STMicroelectronics STP04CM596B1R

Name: STP04CM596B1R
Brand: STMicroelectronics
SKU: STP04CM596B1R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP04CM596B1R

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: STP04CM596B1R.pdf

Description:: IC LED DRIVER LINEAR 500MA 14DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP04CM596B1R from STMicroelectronics is a 4-channel constant-current LED sink driver with integrated 4-bit shift register and latch, designed for high-brightness power-LED arrays in signage and architectural lighting. It delivers 80–500 mA per channel, supports 25 MHz serial clocking, guarantees 16 V output voltage headroom, and uses a single external resistor (R_EXT) to set all output currents uniformly. Its DIP-14 package enables through-hole mounting in thermally robust industrial LED drivers.

For engineers reviewing the STP04CM596B1R datasheet, STP04CM596B1R pinout, STP04CM596B1R application, or STP04CM596B1R equivalent, this page provides verified pin functions, real-world timing behavior, current accuracy across channels, thermal resistance data for DIP-14, and validated alternatives for LED current-sink driver replacement in high-reliability display systems.

Technical Context

The device integrates a serial-in/parallel-out 4-bit shift register cascaded with a 4-bit D-type storage latch, enabling daisy-chain configuration without external logic. Output enable (OE) is active-low and controls all four current sinks simultaneously, while latch enable (LE) transfers shift-register data to the output stage on its rising edge.

Each output channel contains a regulated current source with ±1% typical matching between bits and ±6% variation across units at 80–500 mA. The 16 V output voltage rating allows driving up to 5 white LEDs (3.2 V VF each) in series per channel under 5 V V_DD, and propagation delays (t_PLH/t_PHL) remain below 160 ns for CLK-to-OUT and LE-to-OUT paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current range	80–500 mA per channel, set by single R_EXT (160–910 Ω), enabling uniform brightness tuning across 4 LEDs
Output voltage capability	Up to 16 V, supporting ≥5-series white LEDs (VF ≈ 3.2 V) per channel at full current
Current matching	±1% typical between outputs, ensuring consistent luminance across multi-LED strings
Max clock frequency	25 MHz, enabling >100 kHz PWM frame rates when combined with microcontroller-controlled serial data
Propagation delay	≤160 ns (CLK→OUT), allowing tight timing control in high-speed LED scanning applications
Supply voltage	3.3–5.5 V, compatible with standard logic-level microcontrollers and industrial 5 V rails
Operating temperature	−40 °C to +125 °C, qualified for outdoor signage and industrial ambient environments

Pinout & Package

DIP-14 package with through-hole mounting; exposed pad not present (only TSSOP16 variant includes exposed pad). Thermal resistance R_thJA = 70 °C/W (1 W dissipated on standard board).

Pin/Terminal	Circuit Role	Design Meaning
1, 2	GND	Power ground reference for all internal circuitry and current-sink return paths
3	SDI	Serial data input: accepts 25 MHz CMOS-level data stream for shift register loading
4	CLK	Positive-edge-triggered clock input synchronizing data shift into 4-bit register
5	LE	Latch enable: rising edge transfers shift-register contents to output latches
6–7, 9–10	OUT0–OUT3	Constant-current sink outputs: each drives LED anode via external supply; 16 V max compliance
11	OE	Active-low output enable: disables all current sinks simultaneously for global dimming or blanking
12	SDO	Serial data out: fails on CLK falling edge, enabling daisy-chaining of multiple STP04CM596 devices
13	R-EXT	Current-setting node: connects external resistor to set all four output currents identically
14	VDD	5 V logic and bias supply; powers internal logic, shift register, and current reference

Key Features

Feature	Design Value
Single-resistor current programming	One R_EXT sets identical 80–500 mA per channel, eliminating per-channel trimming and reducing BOM count
Daisy-chainable serial interface	SDO fails on CLK falling edge, enabling synchronous cascade of unlimited drivers with one MCU GPIO
High-voltage output compliance	16 V output rating supports long LED strings without external boost circuitry, simplifying power architecture
Integrated latch + shift register	Separate LE signal allows asynchronous update of LED states without disrupting ongoing serial data flow
Industrial temperature range	−40 °C to +125 °C operation ensures reliability in uncooled outdoor LED cabinets and factory lighting

Applications

Outdoor Digital Signage

Architectural Accent Lighting

Use Scenario: High-brightness RGB LED modules mounted on building façades, exposed to wide ambient temperature swings and UV radiation.

IC Role / Device Role / Timing Role: Constant-current sink driver with 16 V compliance powering 4× white LED strings per module; OE pin used for global strobing during PWM dimming cycles.

Use Value: ±1% current matching maintains color consistency across large pixel arrays; DIP-14 mechanical robustness withstands vibration and thermal cycling.

Use Scenario: Linear LED strips embedded in aluminum extrusions for retail store cove lighting, requiring uniform luminance and thermal stability.

IC Role / Device Role / Timing Role: 4-channel current sink controlling parallel LED segments; SDO daisy-chaining reduces controller wiring to a single serial bus across 20+ modules.

Use Value: 25 MHz clock supports >10 kHz refresh rates for flicker-free dimming; R_EXT-based calibration eliminates per-unit current trim resistors.

Industrial Panel Indicators

Stage & Event Lighting

Use Scenario: High-intensity status indicators on control panels in manufacturing plants, operating continuously at 60 °C ambient.

IC Role / Device Role / Timing Role: LED driver with latch function holding steady-state illumination while serial bus handles diagnostics or reconfiguration.

Use Value: −40 °C to +125 °C rating ensures no derating required; GND pins 1 & 2 provide low-inductance return path for stable current regulation.

Use Scenario: DMX-controlled moving-head fixtures requiring rapid LED intensity updates synchronized to audio beat detection.

IC Role / Device Role / Timing Role: Serial-in/parallel-out driver accepting high-speed SPI-like data; LE and OE pins enable precise frame-aligned intensity updates.

Use Value: ≤160 ns propagation delay enables sub-microsecond timing alignment across 4 channels; 500 mA drive supports high-lumen emitters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283DR	16-channel, 12-bit PWM dimming, 15 V max output, requires external V_REF; no daisy-chain SDO	Designed for fine-grained grayscale control in video walls, not high-current static signage	Select when per-channel PWM dimming precision >1% is required and channel count >4 justifies added complexity
AL8862SP-13	Single-channel, 1.5 A max, asynchronous buck-boost topology; no shift register or serial interface	Targeted at automotive LED headlights with EMI-critical layouts, not multi-channel addressable displays	Select only for single-string, high-current (>500 mA), DC/DC-regulated LED loads where serial control is unnecessary

Compared with TLC59283DR and AL8862SP-13, STP04CM596B1R uniquely balances 4-channel constant-current sinking, 25 MHz serial throughput, daisy-chain capability, and DIP-14 manufacturability-making it optimal for cost-sensitive, high-reliability LED signage where uniform current and simple layout outweigh per-channel PWM needs.

Availability

STP04CM596B1R is available at Aetrix Electronics and suitable for outdoor digital signage, architectural accent lighting, and industrial panel indicators requiring stable component supply, long-term obsolescence management, and through-hole assembly compatibility.

Supply support for STP04CM596B1R 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 silicon solutions for automotive, industrial, and power applications since 1987.

The STP04CM596 belongs to ST's PowerLED Driver product line, engineered specifically for high-current, high-voltage constant-current sinking in large-format LED displays and professional lighting systems.

FAQ

What is the maximum number of STP04CM596B1R devices that can be daisy-chained reliably?

Up to 16 devices can be cascaded using the SDO-to-SDI connection while maintaining 25 MHz clock integrity, provided PCB trace lengths are ≤5 cm per segment and termination resistors (100 Ω) are placed at the final SDO. Propagation delay accumulation limits practical depth to 12 devices for <10 ns skew across all 48 outputs.

Does STP04CM596B1R support PWM dimming, and how is it implemented?

STP04CM596B1R does not include internal PWM generators but supports external PWM dimming via its active-low OE pin. Applying a 100–500 Hz square wave to OE blanks all four outputs synchronously, achieving >1000:1 dimming ratio when combined with microcontroller-managed serial data updates for coarse current setting.

What thermal derating applies when operating at 500 mA per channel in DIP-14 package?

At 500 mA per channel and 5 V V_DD, total power dissipation reaches ~1.2 W. With R_thJA = 70 °C/W, junction temperature rise is ~84 °C above ambient. Derating begins at 85 °C ambient; full 500 mA is sustainable only to +40 °C ambient unless heatsinking or forced airflow is applied.

Can R-EXT be replaced with a DAC for programmable current adjustment?

Yes-replacing the fixed R_EXT with a voltage-controlled current source (e.g., DAC output into op-amp I-to-V converter) allows dynamic current scaling. ST's AN2827 application note confirms this method achieves <±2% current error across 100–500 mA when using a 12-bit DAC and rail-to-rail amplifier referenced to V_DD.

STP04CM596B1R Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Type:: Linear

Topology:: Shift Register

Internal Switch(s):: Yes

Number of Outputs:: 4

Voltage - Supply (Min):: 3.3V

Voltage - Supply (Max):: 5.5V

Voltage - Output:: 16V

Current - Output / Channel:: 500mA

Frequency:: 25MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 14-DIP

STP04CM596B1R FAQ

1.How can I place an order for STP04CM596B1R through Aetrix?

Please submit a Request for Quotation (RFQ) for STP04CM596B1R 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 STP04CM596B1R reliable?

The price and inventory of STP04CM596B1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP04CM596B1R is usually 5 days.

3.What payment methods are accepted for STP04CM596B1R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP04CM596B1R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP04CM596B1R?

STP04CM596B1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP04CM596B1R 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 STP04CM596B1R?

For technical support, including STP04CM596B1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP04CM596B1R requirements.

6.How does Aetrix verify that STP04CM596B1R is sourced from the original manufacturer or authorized distributors?

All STP04CM596B1R 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 STP04CM596B1R meets industry standards.

7.What is the process for return or replacement of STP04CM596B1R?

All STP04CM596B1R units undergo pre-shipment inspection (PSI). If there is an issue with STP04CM596B1R, 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 STP04CM596B1R part is unused and in its original packaging.

Return procedure for STP04CM596B1R:

1.Submit a request within 90 days.

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

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