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

STMicroelectronics STP04CM596MTR

Name: STP04CM596MTR
Brand: STMicroelectronics
SKU: STP04CM596MTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP04CM596MTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: STP04CM596MTR.pdf

Description:: IC LED DRIVER LINEAR 500MA 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP04CM596MTR from STMicroelectronics is a 4-channel constant-current LED sink driver IC 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 channel currents uniformly.

For engineers reviewing the STP04CM596MTR datasheet, STP04CM596MTR pinout, STP04CM596MTR application, or STP04CM596MTR equivalent, key selection criteria include output current adjustability via R_EXT, serial-in/parallel-out data flow with latch control, thermal performance in SO-14 package, and compatibility with cascaded LED string configurations requiring >12 V forward voltage.

Technical Context

The device integrates a 4-bit serial-in, parallel-out shift register feeding a 4-bit D-type storage latch, enabling synchronous update of all four output states. Output enable (OE) is active-low and provides global shutdown independent of latch state.

Each output channel contains a regulated current sink with ±1% typical matching between channels and ±6% unit-to-unit variation at 80–500 mA. The internal current regulation operates with dropout voltage as low as 0.7 V across R_EXT, supporting efficient operation even with high-V_F LED stacks.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	4 independent constant-current sinks, each programmable 80–500 mA via single R_EXT
Max output voltage	16 V - enables driving ≥5 white/blue LEDs in series (V_F ≈ 3.2 V each)
Serial clock frequency	25 MHz - supports fast refresh rates for high-frame-rate LED displays
Current accuracy	±1% typical matching between outputs; ±6% max variation across units
Propagation delay	CLK→OUT: 40–160 ns - ensures tight timing control in synchronized multi-device chains
Supply voltage	3.3–5.5 V - compatible with standard logic-level microcontrollers and FPGA I/O
Operating temp	−40°C to +125°C - rated for industrial ambient and PCB self-heating in enclosed fixtures

Pinout & Package

STP04CM596MTR is supplied in SO-14 package (JEDEC MS-012), with exposed pad not present - distinct from TSSOP16 variant. Thermal resistance R_thJA = 105 °C/W on standard SM PCB.

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 voltage offset
2 SDI	Serial data input	CMOS-compatible input accepting 0.3VDD–0.7VDD logic thresholds; feeds shift register LSB-first
3 CLK	Serial clock input	Rising-edge triggered; 25 MHz max rate defines minimum bit period (40 ns)
4 LE	Latch enable	Active-high; transfers shift register contents to output latches on rising edge
5–8 OUT0–OUT3	Constant-current sink outputs	Each drives cathode of LED string; open-collector equivalent with 16 V breakdown rating
9 N.C.	No connect	Internally unconnected; must remain floating or tied to GND (not VDD)
10 OE	Output enable	Active-low global shutdown; overrides latch state to force all outputs OFF
11 SDO	Serial data output	Shift register Q_MSB output; changes on falling CLK edge for daisy-chaining
12 R-EXT	Current programming	Connects external resistor to set all 4 output currents simultaneously (I_OUT ∝ 1/R_EXT)
13 N.C.	No connect	Internally unconnected; must remain floating or tied to GND
14 VDD	Power supply	5 V nominal supply; powers logic core and current regulation circuitry; bypass capacitor required

Key Features

Feature	Design Value
Single-resistor current tuning	One R_EXT sets identical 80–500 mA per channel - eliminates per-channel calibration
Daisy-chain capable	SDO output synchronized to CLK falling edge enables seamless multi-device cascading without added timing logic
High-voltage output capability	16 V output rating supports long LED strings (e.g., 5× white LEDs @ 3.2 V) without external boost
Fast propagation timing	CLK→OUT delays ≤160 ns and OE→OUT ≤140 ns allow sub-microsecond output updates in real-time PWM dimming
Industrial temperature range	−40°C to +125°C operation verified per JEDEC JESD22-A108 - suitable for outdoor signage enclosures

Applications

Architectural LED Wall Washers

Industrial Panel Indicator Arrays

Use Scenario: Linear LED modules mounted behind frosted glass panels for uniform wall illumination in commercial buildings.

IC Role / Device Role / Timing Role: Constant-current sink driver controlling 4 independent color-mixed LED zones (R/G/B/white) per module.

Use Value: Precise per-channel current matching (±1%) ensures consistent luminance and chromaticity across large installations without manual binning.

Use Scenario: High-reliability status indicators on factory-floor HMIs where LEDs must remain visible under bright ambient light.

IC Role / Device Role / Timing Role: Serially controlled current sink enabling microcontroller GPIO conservation while driving 4 high-intensity indicator LEDs.

Use Value: 500 mA per channel delivers >10,000 cd/m² brightness from 3 mm power LEDs - exceeds visibility requirements in direct sunlight.

Transportation Signage (Bus/Train)

Stage Lighting Pixel Controllers

Use Scenario: Exterior destination signs on mass-transit vehicles requiring wide operating temperature and vibration resilience.

IC Role / Device Role / Timing Role: LED driver with OE-controlled blanking for flicker-free video frame synchronization during motion.

Use Value: −40°C to +125°C rating and 16 V headroom ensure reliable operation despite engine bay heat and winter cold exposure.

Use Scenario: DMX-controlled RGBW pixel drivers in theatrical fixtures where individual LED intensity must be updated at ≥1 kHz.

IC Role / Device Role / Timing Role: High-speed serial interface (25 MHz CLK) enables full 4-channel update in <1.6 µs - critical for artifact-free PWM dimming.

Use Value: Sub-200 ns propagation delay allows tight inter-device skew control in multi-chip pixel chains, preventing color banding.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283DBQR	16-channel, 12-bit PWM dimming; no R_EXT current tuning; requires I²C interface	Better suited for color-accurate stage lighting with per-channel grayscale control	Select when precise 4096-step PWM dimming is required over analog current setting
AL8862SP-13	Single-channel, 1 A buck LED driver; analog/digital dimming; no shift register	Optimized for high-efficiency single-string automotive headlights	Select when driving one high-current string (>500 mA) with DC/DC efficiency priority

Compared with TLC59283DBQR and AL8862SP-13, STP04CM596MTR uniquely balances 4-channel analog current control, serial daisy-chaining, and 16 V headroom - making it optimal for cost-sensitive, medium-channel-count signage where per-channel grayscale is secondary to uniform brightness and thermal simplicity.

Availability

STP04CM596MTR is available at Aetrix Electronics and suitable for architectural lighting, transportation signage, industrial HMI indicators, and stage lighting requiring stable component supply and long-term industrial-grade availability.

Supply support for STP04CM596MTR 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, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.

The STP04CM596 belongs to ST's PowerLED Driver family, engineered specifically for constant-current driving of high-brightness LED arrays in non-automotive industrial and commercial lighting systems.

FAQ

What is the maximum number of STP04CM596MTR devices that can be daisy-chained?

Up to 16 devices can be cascaded using the SDO output of one device connected to the SDI input of the next, provided total CLK-to-last-OUT propagation delay remains within system timing budget. At 25 MHz, cumulative delay exceeds 1 µs beyond 8 devices, limiting practical chain length to 4–6 for sub-microsecond update consistency in video-rate applications.

Can STP04CM596MTR drive LEDs with forward voltage exceeding 12 V?

Yes - the device guarantees 16 V output voltage capability, allowing direct drive of LED strings with total V_F up to 16 V. For example, five 3.2 V blue LEDs (16 V total) operate within specification when VDD = 5 V and R_EXT is selected for target current, provided thermal design sustains junction temperature ≤125°C.

Is an external pull-up resistor required on the SDO pin?

No - SDO is a CMOS push-pull output with rail-to-rail swing (0 V to VDD). Pull-up resistors are unnecessary and may cause contention; direct connection to the next device's SDI is recommended. Input hysteresis on SDI ensures noise immunity without external biasing.

How does R-EXT value affect thermal performance?

R_EXT directly sets output current: lower R_EXT increases current and power dissipation per channel. At 500 mA and 16 V headroom, worst-case power per channel is 8 W - requiring SO-14 board layout with ≥2 cm² copper pour and thermal vias. Datasheet Table 3 specifies R_thJA = 105 °C/W for SO-14 on standard PCB.

STP04CM596MTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-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:: 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:: Surface Mount

Supplier Device Package:: 14-SO

STP04CM596MTR FAQ

1.How can I place an order for STP04CM596MTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP04CM596MTR 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 STP04CM596MTR reliable?

The price and inventory of STP04CM596MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP04CM596MTR is usually 5 days.

3.What payment methods are accepted for STP04CM596MTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP04CM596MTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP04CM596MTR?

STP04CM596MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP04CM596MTR 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 STP04CM596MTR?

For technical support, including STP04CM596MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP04CM596MTR requirements.

6.How does Aetrix verify that STP04CM596MTR is sourced from the original manufacturer or authorized distributors?

All STP04CM596MTR 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 STP04CM596MTR meets industry standards.

7.What is the process for return or replacement of STP04CM596MTR?

All STP04CM596MTR units undergo pre-shipment inspection (PSI). If there is an issue with STP04CM596MTR, 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 STP04CM596MTR part is unused and in its original packaging.

Return procedure for STP04CM596MTR:

1.Submit a request within 90 days.

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

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