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

STMicroelectronics STP08CL596B1

Name: STP08CL596B1
Brand: STMicroelectronics
SKU: STP08CL596B1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP08CL596B1

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP08CL596B1.pdf

Description:: IC LED DRIVER LINEAR 90MA 16DIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,750

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Product details

Overview

STP08CL596B1 from STMicroelectronics is an 8-channel constant-current LED sink driver in DIP-16 package, designed for LED panel displays. It features serial-in/parallel-out shift register architecture, adjustable output current (15–90 mA) via external R_EXT, 25 MHz clock support, and 16 V output voltage capability for driving multiple LEDs in series.

For engineers reviewing the STP08CL596B1 datasheet, STP08CL596B1 pinout, STP08CL596B1 application, or STP08CL596B1 equivalent, key selection criteria include per-channel current accuracy (±3% between bits), thermal resistance (90 °C/W), latch-controlled parallel output update, and 3.3 V microcontroller compatibility with 5 V tolerant inputs.

Technical Context

The device integrates an 8-bit shift register cascaded to an 8-bit D-type storage register, enabling synchronous serial data loading and parallel output latching. Output stage uses sixteen regulated current sources-eight active sink channels plus internal redundancy-to deliver precise constant current under varying V_O (up to 16 V) and temperature (−40°C to +125°C).

Serial data propagation follows failing-edge clock triggering on SDO, supporting daisy-chained configurations. /OE enables global output disable with 400 ns minimum pulse width, while /LE controls latch timing with 15 ns setup/hold requirements-critical for high-speed LED refresh without ghosting.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Channels	8 independent constant-current sink outputs (OUT0–OUT7)
Output Current Range	15–90 mA per channel, set by external R_EXT (e.g., 360 Ω → ~50 mA)
Current Accuracy	±3% matching between channels, ±10% variation across ICs
Clock Frequency	Up to 25 MHz-supports >200 kHz LED refresh rate in 8-bit cascaded systems
Output Voltage Capability	16 V maximum-enables driving up to 5 standard red LEDs (2.1 V each) in series per channel
Supply Voltage	3.0–3.6 V typical operation; 0–7 V absolute max-compatible with 3.3 V logic and 5 V tolerant inputs
Propagation Delay	220–280 ns (CLK→OUT or /LE→OUT), ensuring sub-500 ns output update latency

Pinout & Package

DIP-16 package with through-hole mounting and 2.54 mm pitch; provides mechanical stability and simplified prototyping for LED display modules.

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 3.3 V–5 V compatible logic; data shifted in MSB-first on CLK falling edge
3 CLK	Clock input	Falling-edge triggered; synchronizes shift register clocking and SDO state change
4 /LE	Latch enable (active high)	Transfers shift register contents to output storage register; requires ≥15 ns setup/hold
5–12 OUT0–OUT7	Constant-current sink outputs	Each drives LED cathodes; current set by R_EXT; supports 0–16 V compliance voltage
13 /OE	Output enable (active low)	Global disable of all outputs; 400 ns min pulse width required for clean blanking
14 SDO	Serial data output	Shift register Q₇ output; changes state on CLK falling edge for daisy-chain expansion
15 R-EXT	Current programming terminal	Connects external resistor to GND to set full-scale output current (I_OUT ∝ 1/R_EXT)
16 VDD	Positive supply	3.0–3.6 V nominal; powers logic and bias circuits; not used for output current sourcing

Key Features

Feature	Design Value
Adjustable constant-current sink	Per-channel current set externally (15–90 mA) without trimming or calibration
Daisy-chain capable serial interface	SDO synchronized to CLK falling edge enables reliable multi-device cascading without added timing margin
High-voltage output compliance	16 V output swing allows series connection of multiple LEDs per channel, reducing PCB routing complexity
Low-latency parallel output update	/LE-triggered latch ensures simultaneous output update across all 8 channels within 280 ns
Thermally robust DIP-16 package	90 °C/W junction-to-ambient thermal resistance supports continuous 720 mA total sink current at room ambient

Applications

LED Character Display Panels

Industrial Status Indicator Arrays

Use Scenario: 8-digit alphanumeric LED displays in HVAC control panels requiring uniform brightness and long-term current stability.

IC Role / Device Role / Timing Role: Constant-current sink driver for common-anode LED segments; receives BCD or ASCII-coded serial data and updates all digits synchronously via /LE.

Use Value: ±3% channel matching eliminates manual current balancing; 16 V compliance supports multiplexed 4-segment-per-digit designs with minimal external components.

Use Scenario: Multi-color status indicators on PLC I/O modules where red/green/yellow LEDs signal fault, run, and standby states.

IC Role / Device Role / Timing Role: Parallel-output LED driver controlled by microcontroller GPIO; /OE enables rapid blinking or dimming via PWM on enable line.

Use Value: 25 MHz clock tolerance allows real-time reconfiguration during system diagnostics; 3.3 V logic compatibility avoids level-shifter design overhead.

Outdoor LED Message Signs

Test Equipment Front Panel Displays

Use Scenario: Segment-driven scrolling message boards exposed to −40°C to +85°C ambient, requiring consistent luminance across temperature.

IC Role / Device Role / Timing Role: High-compliance sink driver powering high-brightness red LEDs in series strings; R_EXT selected for 60 mA at cold start.

Use Value: ±10% inter-IC current variation remains within acceptable visual uniformity band; DIP-16 facilitates serviceable through-hole assembly in field-replaceable modules.

Use Scenario: Benchtop instrument front panels with discrete LED indicators for power-on, measurement ready, error, and calibration status.

IC Role / Device Role / Timing Role: Low-pin-count LED driver interfaced directly to MCU SPI peripheral; SDO unused or tied off for single-device configuration.

Use Value: 20 ns input timing margins simplify firmware bit-banging; 0.6 mA quiescent current (REXT open) minimizes standby power in battery-backed instruments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP08CP05PTR	8-channel, 100 mA max per channel; TSSOP-16 with exposed pad; higher thermal efficiency (R_thj-amb = 140 °C/W)	Designed for surface-mount LED modules with space-constrained layouts and higher power density	Select when board area is limited and thermal management requires enhanced dissipation over DIP-16
TLC5916IDR	8-channel, 120 mA max; integrated thermal shutdown; I²C-compatible control interface instead of shift register	Used in systems requiring individual channel on/off control and fault reporting-not suitable for pure serial streaming	Select when microcontroller lacks dedicated SPI hardware but offers I²C, or when overtemperature protection is mandatory

Compared with STP08CL596B1, STP08CP05PTR offers better thermal performance in compact layouts but requires rework for through-hole assembly, while TLC5916IDR trades shift-register simplicity for programmable per-channel control and safety features-neither is pin- or functionally identical.

Availability

STP08CL596B1 is available at Aetrix Electronics and suitable for LED character displays, industrial indicator arrays, outdoor message signs, and test equipment front panels requiring stable component supply and long-lifecycle availability.

Supply support for STP08CL596B1 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 automotive, industrial, and power management solutions with broad analog and mixed-signal portfolio coverage.

The STP08CL596 belongs to ST's LED driver product line, engineered specifically for cost-sensitive, high-reliability LED panel applications demanding precise current regulation and robust serial interface timing.

FAQ

What is the minimum /LE pulse width required for reliable output latching?

The STP08CL596B1 requires a minimum /LE high pulse width of 15 ns at V_DD = 3.0–3.6 V, as specified in Table 7. This ensures complete transfer from shift register to storage register without metastability. For robust operation across temperature and voltage corners, a 50 ns pulse is recommended in production firmware.

Can STP08CL596B1 drive white LEDs with forward voltage >3.2 V per diode?

Yes-each output supports up to 16 V compliance voltage, enabling series connection of up to four 3.2 V white LEDs (12.8 V total) plus margin. At 90 mA output, ensure total string voltage stays ≤16 V and that R_EXT is selected to maintain current accuracy across the full V_F range.

Is SDO functional when /OE is asserted low?

Yes-SDO remains active and continues shifting out data on CLK falling edges even when /OE is low. The /OE signal only disables the output drivers (OUT0–OUT7); it does not halt internal shift register operation or SDO functionality, enabling uninterrupted daisy-chain data flow during blanking intervals.

How does R-EXT value affect total supply current (I_DD)?

I_DD scales linearly with R_EXT: lower R_EXT increases output current and raises I_DD. For example, R_EXT = 250 Ω draws 10.1–14.1 mA (all outputs ON), versus 0.3–0.6 mA with R_EXT open. This relationship is confirmed in Table 7's IDD(ON1)/IDD(ON2) entries and must be included in system-level power budgeting.

STP08CL596B1 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):: 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:: Through Hole

Supplier Device Package:: 16-DIP

STP08CL596B1 FAQ

1.How can I place an order for STP08CL596B1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STP08CL596B1 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 STP08CL596B1 reliable?

The price and inventory of STP08CL596B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP08CL596B1 is usually 5 days.

3.What payment methods are accepted for STP08CL596B1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP08CL596B1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP08CL596B1?

STP08CL596B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP08CL596B1 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 STP08CL596B1?

For technical support, including STP08CL596B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP08CL596B1 requirements.

6.How does Aetrix verify that STP08CL596B1 is sourced from the original manufacturer or authorized distributors?

All STP08CL596B1 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 STP08CL596B1 meets industry standards.

7.What is the process for return or replacement of STP08CL596B1?

All STP08CL596B1 units undergo pre-shipment inspection (PSI). If there is an issue with STP08CL596B1, 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 STP08CL596B1 part is unused and in its original packaging.

Return procedure for STP08CL596B1:

1.Submit a request within 90 days.

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

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