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

STMicroelectronics STP08CDC596B1

Name: STP08CDC596B1
Brand: STMicroelectronics
SKU: STP08CDC596B1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP08CDC596B1

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: STP08CDC596B1.pdf

Description:: IC LED DRIVER LINEAR 120MA 16DIP

Quantity:: RFQ Add To RFQ list

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Inventory:1,704

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Product details

Overview

STP08CDC596B1 from STMicroelectronics is an 8-bit constant-current LED sink driver with integrated open/short-to-GND/short-to-V_LED fault detection, designed for traffic signage and industrial LED panels. It delivers 20–120 mA per channel via external R_EXT, supports 25 MHz serial clocking, operates from 3.3 V or 5 V logic, and features 16 V output voltage capability for driving multiple LEDs in series.

For engineers reviewing the STP08CDC596B1 datasheet, STP08CDC596B1 pinout, STP08CDC596B1 application, or STP08CDC596B1 equivalent, key selection criteria include its DIP-16 package compatibility, real-time error feedback via SDO, latch-controlled parallel output staging, and seamless integration into cascaded LED display systems requiring high-reliability fault monitoring.

Technical Context

The device integrates an 8-bit serial-in/parallel-out shift register feeding an 8-bit D-type storage register, enabling precise timing control of LED current activation. Its dual-mode operation-normal drive mode and dedicated error-detection mode-is triggered by a 5-cycle OE/LE sequence without footprint change.

Error detection relies on internal voltage/current sampling during active drive: short-to-GND or open-circuit conditions are identified when detected current falls ≤50% of programmed I_OUT; short-to-V_LED is flagged when output voltage exceeds 2.4 V. Detection results stream back via SDO in standard serial format for MCU interpretation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	8 independent constant-current sinks, each programmable 20–120 mA via single R_EXT
Output voltage rating	16 V max-supports ≥5 white LEDs (3.2 V each) in series per channel
Serial clock frequency	25 MHz-enables full 8-bit update in ≤320 ns, suitable for high-refresh-rate displays
Fault detection types	Detects open load, short-to-GND, short-to-V_LED-no additional pins or PCB area required
Logic supply range	3.3 V to 5.5 V-directly compatible with modern microcontrollers and FPGAs
Propagation delay (CLK→OUT)	30–280 ns-ensures tight timing alignment across cascaded drivers in large panels
Package	DIP-16 (0.3 inch width)-through-hole mounting for high-vibration environments like traffic signs

Pinout & Package

STP08CDC596B1 is housed in a 16-pin plastic dual in-line package (DIP-16), 0.3 inch wide, with through-hole leads optimized for mechanical robustness and thermal stability in outdoor signage applications.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Common return path for all output currents and logic circuitry
2 SDI	Serial data input	Accepts 8-bit LED brightness/control data synchronized to CLK rising edge
3 CLK	Serial clock input	Drives shift register on rising edge; 25 MHz max enables rapid data loading
4 LE/DM1	Latch enable / Detection mode 1	Transfers shift register contents to output latches; also initiates detection mode sequencing
5–12 OUT0–OUT7	Constant-current sink outputs	Each drives one LED cathode with regulated current; 16 V compliance allows series strings
13 OE/DM2	Output enable / Detection mode 2	Active-low enables outputs; combined with LE forms 5-cycle detection entry sequence
14 SDO	Serial data output	Feedbacks 8-bit status (1 = OK, 0 = fault) during detection mode; daisy-chain capable
15 R-EXT	Current programming terminal	Connects external resistor to set all 8 output currents simultaneously (20–120 mA range)
16 VDD	Positive supply	3.3 V or 5 V logic and internal bias supply; powers shift register, latch, and current sources

Key Features

Feature	Design Value
Integrated fault detection	Per-channel open/short diagnostics without added components or board space
Single-resistor current tuning	One external resistor sets identical current across all 8 outputs-simplifies BOM and calibration
25 MHz serial interface	Enables >3 million LED updates/sec in cascaded configurations-critical for flicker-free video signage
DIP-16 mechanical robustness	Through-hole package withstands thermal cycling and vibration in outdoor traffic sign enclosures
16 V output compliance	Supports longer LED strings per channel-reduces wiring complexity and driver count per panel

Applications

Traffic Signal Panels

Industrial Status Displays

Use Scenario: Red/amber/green signal modules in roadside traffic lights requiring continuous fault monitoring to prevent safety-critical outages.

IC Role / Device Role / Timing Role: LED sink driver with real-time open-circuit detection-ensures immediate identification of failed lamp strings before controller timeout.

Use Value: Eliminates need for external sense resistors or optical feedback, reducing system cost while meeting EN 12964 Class A reliability requirements.

Use Scenario: Factory floor machine status indicators showing operational state (RUN/STOP/ALERT) under high EMI and temperature variation.

IC Role / Device Role / Timing Role: Constant-current driver with latch-controlled output staging-prevents ghosting during rapid state transitions.

Use Value: 3.3 V logic compatibility enables direct FPGA interface; 125 °C operating range ensures stable performance near motors and power supplies.

Roadside Variable Message Signs

Public Transit Destination Displays

Use Scenario: Large-format alphanumeric LED signs mounted on highway gantries, exposed to UV, rain, and wide ambient temperature swings.

IC Role / Device Role / Timing Role: High-voltage sink driver with short-to-V_LED detection-identifies wiring faults caused by moisture ingress or physical damage.

Use Value: 16 V output rating allows 4–5 LEDs per string, minimizing current path length and voltage drop across long PCB traces.

Use Scenario: Bus/train destination boards requiring high-brightness, low-maintenance LED arrays visible in daylight.

IC Role / Device Role / Timing Role: Serial-input parallel-output driver with daisy-chain SDO-enables compact controller design with minimal GPIO usage.

Use Value: Built-in error reporting via SDO reduces firmware polling overhead and enables predictive maintenance alerts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283DR	16-bit, no integrated fault detection; requires external sensing for open/short diagnosis	Lacks native error feedback-suitable only where diagnostics are handled at MCU level	Select if higher channel count is needed and fault detection is implemented externally
MAX6966ATL+	8-bit, I²C interface instead of SPI; includes thermal shutdown but no short-to-V_LED detection	Requires I²C bus resources and lacks V_LED-short identification critical for signage safety	Select for space-constrained designs needing I²C simplicity, not safety-critical fault coverage

Compared with TLC59283DR and MAX6966ATL+, STP08CDC596B1 uniquely provides full open/short-to-GND/short-to-V_LED detection within the same DIP-16 footprint as legacy drivers-enabling drop-in reliability upgrades without layout revision.

Availability

STP08CDC596B1 is available at Aetrix Electronics and suitable for traffic signal systems, industrial HMI panels, and roadside variable message signs requiring stable component supply, long-term obsolescence management, and through-hole mechanical integrity.

Supply support for STP08CDC596B1 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 automotive, industrial, and power management solutions with emphasis on reliability and longevity.

The STP08CDC596 belongs to ST's LED driver portfolio targeting high-reliability outdoor signage and transportation infrastructure-designed specifically for applications where LED failure must be detected instantly to maintain regulatory compliance and public safety.

FAQ

What is the purpose of the R-EXT pin?

The R-EXT pin connects to a single external resistor that sets the reference current for all eight output channels. Using Ohm's Law and the device's internal 1.25 V reference, the resistor value directly determines the output current range (20–120 mA). This eliminates per-channel trimming and ensures matched current accuracy across outputs.

How does the error detection mode operate without changing the pinout?

Error detection uses the existing OE/DM2 and LE/DM1 pins in a timed 5-clock sequence to enter and exit detection mode. During detection, the same SDO pin returns 8-bit status data instead of shifted input data-preserving full pin compatibility with non-detection variants like STP08DP05.

Can STP08CDC596B1 drive LEDs directly from a 3.3 V microcontroller?

Yes-its inputs are 3.3 V tolerant with VIH minimum of 0.7×VDD and VIL maximum of 0.3×VDD, allowing direct connection to 3.3 V MCUs without level shifters. The device itself requires a separate 5 V VDD supply for LED driving, but logic-level signals remain fully compatible.

Why is the DIP-16 package specified for STP08CDC596B1?

The DIP-16 package provides superior mechanical retention and thermal dissipation in high-vibration, outdoor environments such as traffic signal housings. Its 0.3 inch width matches legacy LED driver footprints, enabling backward-compatible replacements without PCB redesign-critical for field-upgrade scenarios.

STP08CDC596B1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Type:: Linear

Topology:: Shift Register

Internal Switch(s):: Yes

Number of Outputs:: 8

Voltage - Supply (Min):: 3.3V

Voltage - Supply (Max):: 5.5V

Voltage - Output:: 16V

Current - Output / Channel:: 120mA

Frequency:: 25MHz

Dimming:: -

Applications:: Signage

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-DIP

STP08CDC596B1 FAQ

1.How can I place an order for STP08CDC596B1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STP08CDC596B1 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 STP08CDC596B1 reliable?

The price and inventory of STP08CDC596B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP08CDC596B1 is usually 5 days.

3.What payment methods are accepted for STP08CDC596B1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP08CDC596B1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP08CDC596B1?

STP08CDC596B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP08CDC596B1 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 STP08CDC596B1?

For technical support, including STP08CDC596B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP08CDC596B1 requirements.

6.How does Aetrix verify that STP08CDC596B1 is sourced from the original manufacturer or authorized distributors?

All STP08CDC596B1 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 STP08CDC596B1 meets industry standards.

7.What is the process for return or replacement of STP08CDC596B1?

All STP08CDC596B1 units undergo pre-shipment inspection (PSI). If there is an issue with STP08CDC596B1, 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 STP08CDC596B1 part is unused and in its original packaging.

Return procedure for STP08CDC596B1:

1.Submit a request within 90 days.

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

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