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

STMicroelectronics STP08C596MTR

Name: STP08C596MTR
Brand: STMicroelectronics
SKU: STP08C596MTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP08C596MTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: STP08C596MTR.pdf

Description:: IC LED DRIVER LINEAR 120MA 16SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP08C596MTR from STMicroelectronics is an 8-channel constant-current LED sink driver in SO-16 package, designed for serially controlled LED panel displays. It features 15–120 mA per channel output current adjustable via external R_EXT, 25 MHz clock support, 16 V output voltage capability, and ±3% channel-to-channel current accuracy at V_O ≥ 0.7 V.

For engineers reviewing the STP08C596MTR datasheet, STP08C596MTR pinout, STP08C596MTR application, or STP08C596MTR equivalent, key selection criteria include output current programmability, thermal performance in SO-16, latch-controlled parallel output timing, and cascade-compatible serial data flow with failing-edge SDO propagation.

Technical Context

The device integrates an 8-bit serial-in/parallel-out shift register cascaded to an 8-bit D-type storage latch, enabling synchronized LED update across multiple daisy-chained units. Output stage uses sixteen regulated current sources (eight active sinks + eight internal reference paths) to deliver precise constant current per channel.

Current regulation is set by a single external resistor (R_EXT) connected between pin 15 and GND, establishing full-scale output current with ±3% matching between channels and ±10% variation across ICs. The /OE (active-low) and /LE control signals allow independent blanking and latching without disrupting serial data flow.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Channels	8 constant-current sink outputs (OUT0–OUT7), each independently controllable via shift/latch sequence
Output Current Range	15–120 mA per channel, set by external R_EXT; enables brightness tuning across LED types and forward voltages
Max Output Voltage	16 V, supports up to 4–5 white LEDs in series per channel at typical V_F = 3.2–3.6 V
Clock Frequency	25 MHz max, allows >200 kSPS serial loading for real-time LED animation or high-refresh-rate signage
Current Matching	±3% between channels, ensuring uniform LED luminance without per-channel calibration
Supply Voltage	4.5–5.5 V, compatible with standard 5 V logic and industrial power rails
Propagation Delay	t_PLH1 = 200–280 ns (CLK→OUT), enabling sub-500 ns update latency for synchronized multi-driver systems

Pinout & Package

STP08C596MTR uses a 16-pin SOIC (SO-16) package with standard 1.27 mm pitch, 10.0 × 6.0 mm body, and exposed pad not electrically connected - optimized for PCB heat dissipation in LED driver applications.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Common return for all current sinks and logic inputs; must be low-impedance path to minimize ground bounce during switching
2 SDI	Serial data input	CMOS-compatible input accepting 0–5 V logic; data shifted in MSB-first on falling CLK edge
3 CLK	Clock input	Edge-triggered input; SDO changes state on falling edge, enabling daisy-chain synchronization
4 /LE	Latch enable (active high)	Transfers shift register contents to output latches; holds outputs stable during serial reload
5–12 OUT0–OUT7	Constant-current sink outputs	Each drives LED cathode to GND; current magnitude set by R_EXT, voltage compliance up to 16 V
13 /OE	Output enable (active low)	Global blanking control; pulls all outputs high-Z when asserted, enabling PWM dimming via external signal
14 SDO	Serial data output	Shifted-out data from internal register; supports cascading up to 16+ devices without external buffering
15 R-EXT	Current programming node	Connects external resistor to GND; sets full-scale current I_OUT = 12.5 V / R_EXT (typ.)
16 VDD	Power supply	5 V nominal supply; powers logic core and current reference; decoupling capacitor required near pin

Key Features

Feature	Design Value
Adjustable constant current	Single R_EXT resistor sets identical full-scale current across all 8 channels, simplifying BOM and layout
Daisy-chain serial interface	SDO output synchronized to CLK falling edge, enabling reliable multi-device cascading without added timing margin
High-voltage output compliance	16 V output rating supports longer LED strings and higher V_F diodes (e.g., UV or high-brightness white LEDs)
Low propagation delay	200 ns typical CLK→OUT delay ensures tight timing alignment in large LED matrices with distributed drivers
Thermal-enhanced SO-16	Standard SOIC footprint with improved thermal resistance (125 °C/W junction-to-ambient) for sustained 120 mA/channel operation

Applications

LED Signage Panels

Industrial HMI Displays

Use Scenario: Outdoor full-color LED video walls requiring uniform brightness and high refresh rates.

IC Role / Device Role / Timing Role: Sink driver for red/green/blue LED modules; provides per-pixel current control and serial pixel data forwarding.

Use Value: ±3% current matching eliminates visible column/row banding; 25 MHz clock enables 1920×1080 @ 60 Hz with 8-bit grayscale.

Use Scenario: Factory-floor operator panels with segmented LED indicators and status lights.

IC Role / Device Role / Timing Role: Constant-current sink for discrete indicator LEDs; driven by microcontroller GPIO via SPI-like serial interface.

Use Value: R_EXT-based current tuning accommodates mixed LED colors (red, green, yellow) on same board without resistor arrays.

Architectural Lighting Controls

Test Equipment Status Indicators

Use Scenario: Programmable linear LED strips for retail or hospitality lighting with dynamic color zoning.

IC Role / Device Role / Timing Role: Channel-isolated current source for addressable zones; /OE used for global PWM dimming synchronized to AC line.

Use Value: 16 V output headroom supports 4–5 LEDs per zone at 24 V bus; thermal SO-16 allows direct mounting on aluminum extrusions.

Use Scenario: Benchtop test instruments requiring high-reliability LED status feedback under variable ambient temperature.

IC Role / Device Role / Timing Role: Robust LED driver with -40°C to +125°C operation; latch function isolates display updates from serial communication noise.

Use Value: ±10% inter-device current variation remains stable over temperature, eliminating recalibration during extended burn-in tests.

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
STPIC6C595MTR	No R_EXT-adjustable current; fixed 100 mA max per channel; no 16 V output compliance (max 7 V)	Suitable only for low-V_F LEDs (e.g., red/green) and short strings; lacks thermal SO-16 variant	Select when cost sensitivity outweighs current flexibility and voltage headroom requirements
TLC5916IPW	Higher current accuracy (±1.5%), but lower max output voltage (15 V); requires separate V_REF supply for current setting	Better suited for precision instrumentation LEDs; less tolerant of PCB layout variations due to analog reference routing	Prefer for metrology-grade displays where channel matching dominates over thermal robustness

Compared with STPIC6C595MTR and TLC5916IPW, STP08C596MTR uniquely balances programmable current, 16 V compliance, and SO-16 thermal performance - making it optimal for outdoor signage and industrial LED arrays where reliability and string length flexibility are critical.

Availability

STP08C596MTR is available at Aetrix Electronics and suitable for LED signage panels, industrial HMI displays, and architectural lighting controls requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.

Supply support for STP08C596MTR 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 vertical manufacturing and broad IP portfolio.

The STP08C596 belongs to ST's LED driver product line, engineered specifically for high-reliability, medium-voltage LED panel systems where thermal efficiency, current precision, and serial scalability are prioritized over integrated PWM or diagnostics.

FAQ

What is the minimum R_EXT value supported for 120 mA output per channel?

The datasheet specifies I_OUT = 12.5 V / R_EXT (typical). For 120 mA, R_EXT = 12.5 V / 0.12 A ≈ 104 Ω. Absolute maximum output current is limited to 120 mA regardless of R_EXT, and values below 100 Ω risk exceeding thermal limits in SO-16 at full load.

Can STP08C596MTR drive LEDs with forward voltage above 5 V per diode?

Yes - its 16 V output voltage rating supports up to four 3.6 V white LEDs (14.4 V total) or five 3.2 V LEDs (16 V total) in series per channel. This eliminates need for external boost circuitry in medium-string LED applications.

How does /OE interact with /LE during PWM dimming?

/OE (active-low) forces all outputs into high-impedance state independently of /LE state. When /OE is asserted during active latched output, LEDs extinguish immediately without affecting shift register or latch contents - enabling clean, jitter-free PWM dimming synchronized to external timing.

Is thermal derating required when operating at 120 mA per channel in SO-16?

Yes - at full 8-channel 120 mA load (960 mA total sink current), power dissipation exceeds 1 W. With R_thj-amb = 125 °C/W, junction temperature rise is ~125 °C above ambient. PCB copper area and airflow must be designed to maintain T_J ≤ 125 °C; derating to 80 mA/channel is recommended for sealed enclosures above 60 °C ambient.

STP08C596MTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Linear

Topology:: Shift Register

Internal Switch(s):: Yes

Number of Outputs:: 8

Voltage - Supply (Min):: 4.5V

Voltage - Supply (Max):: 5.5V

Voltage - Output:: 16V

Current - Output / Channel:: 120mA

Frequency:: 25MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SO

STP08C596MTR FAQ

1.How can I place an order for STP08C596MTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP08C596MTR 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 STP08C596MTR reliable?

The price and inventory of STP08C596MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP08C596MTR is usually 5 days.

3.What payment methods are accepted for STP08C596MTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP08C596MTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP08C596MTR?

STP08C596MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP08C596MTR 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 STP08C596MTR?

For technical support, including STP08C596MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP08C596MTR requirements.

6.How does Aetrix verify that STP08C596MTR is sourced from the original manufacturer or authorized distributors?

All STP08C596MTR 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 STP08C596MTR meets industry standards.

7.What is the process for return or replacement of STP08C596MTR?

All STP08C596MTR units undergo pre-shipment inspection (PSI). If there is an issue with STP08C596MTR, 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 STP08C596MTR part is unused and in its original packaging.

Return procedure for STP08C596MTR:

1.Submit a request within 90 days.

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

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