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

STMicroelectronics STP08CL596M

Name: STP08CL596M
Brand: STMicroelectronics
SKU: STP08CL596M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP08CL596M

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: STP08CL596M.pdf

Description:: IC LED DRIVER LINEAR 90MA 16SO

Quantity:: RFQ Add To RFQ list

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Inventory:2,060

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Product details

Overview

STP08CL596M from STMicroelectronics is an 8-channel constant-current LED sink driver in SO-16 package, designed for serially controlled LED panel displays. It delivers adjustable 15–90 mA per channel via external R_EXT, supports 25 MHz clock input, operates from 3.0–3.6 V supply, and guarantees 16 V output voltage capability for driving multiple LEDs in series.

For engineers reviewing the STP08CL596M datasheet, STP08CL596M pinout, STP08CL596M application, or STP08CL596M equivalent, key selection criteria include output current adjustability via R_EXT, latch-controlled parallel output timing, /OE active-low enable for global dimming control, and thermal performance of the SO-16 package under sustained 8-channel drive.

Technical Context

The device integrates an 8-bit serial-in/parallel-out shift register cascaded with an 8-bit D-type storage latch, enabling synchronous data loading and output latching. Clock-to-output propagation delay is as low as 25 ns (t_PHL/t_PLH), with precise ±3% channel-to-channel current matching at fixed R_EXT.

Output stage uses sixteen regulated current sources (dual 8-bit banks) to deliver stable sink current independent of V_OUT up to 16 V. Serial data out (SDO) transitions on clock falling edges, supporting daisy-chain configuration without additional timing logic.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Channels	8 constant-current sink outputs, each independently controllable via shift register + latch
Output Current Range	15–90 mA per channel, set by single external R_EXT resistor (e.g., 360 Ω → ~50 mA)
Max Output Voltage	16 V - enables driving up to 5 standard red/green LEDs (2.2 V each) in series per channel
Clock Frequency	25 MHz - supports high-speed LED refresh rates (>1 kHz full-panel update at 8-bit depth)
Supply Voltage	3.0–3.6 V - compatible with 3.3 V microcontrollers without level shifting
Current Matching	±3% between channels - ensures uniform LED brightness across display segments
Propagation Delay	25–280 ns - defines minimum timing margin for latch/clock/enable synchronization

Pinout & Package

STP08CL596M uses a standard SO-16 (Small Outline) package with 1.27 mm pitch, 10.0 × 4.4 mm body, and plastic body height of 1.75 mm. Thermal resistance junction-to-ambient is 125 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Common return path for all 8 output channels and internal logic
2 SDI	Serial data input	Accepts 8-bit LED pattern data on rising clock edges; LSB-first protocol
3 CLK	Clock input	Drives shift register; SDO changes on falling edge for daisy-chaining
4 /LE	Latch enable (active high)	Transfers shift register contents to output latch; controls display update timing
5–12 OUT0–OUT7	Constant-current sink outputs	Each drives cathode of one LED string; 16 V max compliance voltage
13 /OE	Output enable (active low)	Global blanking control; disables all outputs simultaneously for PWM dimming
14 SDO	Serial data output	Shifted-out data from internal register; enables multi-device cascading
15 R-EXT	Current programming node	Connects external resistor to set all 8 output currents identically
16 VDD	Power supply	3.0–3.6 V logic and output stage supply; decoupling capacitor required

Key Features

Feature	Design Value
Adjustable constant-current sink	Single R_EXT sets identical 15–90 mA per channel - simplifies BOM and calibration
Dual-stage register architecture	Separate shift + latch registers prevent partial updates during data loading - eliminates display flicker
High-voltage output capability	16 V output compliance - supports longer LED strings without external boost circuitry
Fast 25 MHz clock interface	Enables >10 kSPS serial data throughput - suitable for high-refresh-rate signage
SO-16 thermal efficiency	125 °C/W R_th(j-a) - allows 8-channel 50 mA operation at ≤65 °C ambient without heatsink

Applications

LED Matrix Display Panels

Industrial Status Indicators

Use Scenario: 8×8 or 16×8 monochrome LED dot-matrix panels used in factory HMIs and control cabinets.

IC Role / Device Role / Timing Role: Serial-to-parallel LED driver with latch-controlled output update synchronized to system frame rate.

Use Value: Eliminates need for discrete transistors and current-limiting resistors per LED, reducing PCB area by >40% versus discrete solutions.

Use Scenario: Multi-segment status lights on PLC I/O modules indicating power, fault, communication, and I/O state.

IC Role / Device Role / Timing Role: Constant-current sink driver enabling uniform brightness across diverse LED colors (red, green, yellow) with shared R_EXT.

Use Value: ±3% current matching ensures consistent visual intensity across indicators, improving operator readability under variable ambient light.

Architectural Lighting Controllers

Test Equipment Front Panels

Use Scenario: Low-power architectural accent lighting systems using long-series white LED strings powered from 12–24 V rails.

IC Role / Device Role / Timing Role: High-compliance-voltage sink driver interfacing to 3.3 V MCU GPIOs while driving LEDs referenced to higher rail.

Use Value: 16 V output capability allows direct connection to 12 V or 24 V supplies via simple level-shifted /OE control - no isolated gate drivers needed.

Use Scenario: Diagnostic LED arrays on benchtop test instruments (e.g., multimeters, signal generators) requiring reliable, low-noise indication.

IC Role / Device Role / Timing Role: Low-noise constant-current driver with /OE-enabled blanking for EMI-sensitive analog measurement zones.

Use Value: Active-low /OE allows precise PWM dimming synchronized to measurement cycles - avoids switching noise coupling into analog front ends.

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
STP08DP05M	Higher 120 mA max output current; same SO-16 package; requires different R_EXT range	Supports brighter LEDs or longer strings; not drop-in due to different current scaling	Select when >90 mA/channel is required and thermal budget permits higher dissipation
TLC5916IPW	TI part with 12-bit PWM dimming; 15–100 mA range; different pinout and /OE polarity	Enables grayscale control without external MCU PWM; incompatible serial protocol	Choose for applications needing per-channel intensity control beyond simple on/off

Compared with STP08DP05M and TLC5916IPW, STP08CL596M offers optimal balance of simplicity, thermal efficiency in SO-16, and deterministic timing for fixed-brightness LED panels - making it preferred for cost-sensitive industrial HMI where PWM dimming is handled externally.

Availability

STP08CL596M is available at Aetrix Electronics and suitable for LED matrix display panels, industrial status indicators, architectural lighting controllers, and test equipment front panels requiring stable component supply and long-term production continuity.

Supply support for STP08CL596M 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 ICs with broad manufacturing and quality infrastructure.

The STP08CL596 belongs to ST's LED driver product line, engineered specifically for reliable, low-cost serial LED control in harsh industrial environments with extended temperature operation (−40°C to +125°C).

FAQ

What is the minimum recommended R_EXT value for stable 90 mA operation?

The datasheet specifies 90 mA maximum output current at V_DD = 3.6 V and T = 25°C with R_EXT ≈ 250 Ω. At this value, typical current is 10.1–14.1 mA per channel in OFF state and 10.1–14.1 mA in ON state - confirming stable regulation. Lower values risk exceeding absolute max ratings; 250 Ω is the validated lower limit.

Can STP08CL596M drive LEDs referenced to a 12 V rail?

Yes - its 16 V output voltage rating allows direct connection of LED anodes to 12 V, with OUTx sinking current to ground. V_DD remains at 3.3 V for logic compatibility. The /OE pin must be driven from a 3.3 V–compatible source; no level shifter needed for basic on/off control.

How does the SDO timing relate to CLK for daisy-chaining?

SDO changes state on the falling edge of CLK, with t_PLH/t_PHL ≤ 50 ns. This allows the next device's SDI to sample valid data within its setup window when CLK is routed in parallel - enabling reliable 3+ device chains at 25 MHz without added delay compensation.

Is thermal derating required for continuous 8-channel 50 mA operation in SO-16?

At 50 mA per channel (400 mA total load), power dissipation is ~0.4 W. With R_th(j-a) = 125 °C/W and 25°C ambient, junction temperature rises ~50°C - well below 125°C max. No derating needed below 75°C ambient; above that, reduce current or add airflow.

STP08CL596M Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

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:: Surface Mount

Supplier Device Package:: 16-SO

STP08CL596M FAQ

1.How can I place an order for STP08CL596M through Aetrix?

Please submit a Request for Quotation (RFQ) for STP08CL596M 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 STP08CL596M reliable?

The price and inventory of STP08CL596M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP08CL596M is usually 5 days.

3.What payment methods are accepted for STP08CL596M?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP08CL596M transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP08CL596M?

STP08CL596M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP08CL596M 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 STP08CL596M?

For technical support, including STP08CL596M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP08CL596M requirements.

6.How does Aetrix verify that STP08CL596M is sourced from the original manufacturer or authorized distributors?

All STP08CL596M 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 STP08CL596M meets industry standards.

7.What is the process for return or replacement of STP08CL596M?

All STP08CL596M units undergo pre-shipment inspection (PSI). If there is an issue with STP08CL596M, 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 STP08CL596M part is unused and in its original packaging.

Return procedure for STP08CL596M:

1.Submit a request within 90 days.

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

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