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

STMicroelectronics STP16CP596MTR

Name: STP16CP596MTR
Brand: STMicroelectronics
SKU: STP16CP596MTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16CP596MTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: STP16CP596MTR.pdf

Description:: IC LED DRIVER LINEAR 50MA 24SO

Quantity:: RFQ Add To RFQ list

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Inventory:3,468

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Product details

Overview

STP16CP596MTR from STMicroelectronics is a 16-bit constant-current LED sink driver in SO-24 package, designed for serial-in/parallel-out LED panel control. It delivers adjustable 3–50 mA per channel via external R_EXT, supports 25 MHz clock input, operates from 3.0–5.5 V supply, and guarantees 16 V output voltage capability for driving multiple LEDs in series.

For engineers reviewing the STP16CP596MTR datasheet, STP16CP596MTR pinout, STP16CP596MTR application, or STP16CP596MTR equivalent, key selection criteria include output current adjustability, thermal performance in SO-24, latch and output-enable timing behavior, and compatibility with 3.3 V microcontrollers in high-density LED signage systems.

Technical Context

The device integrates a 16-bit shift register cascaded to a 16-bit D-type storage latch, enabling synchronous data loading and output updating. Serial data propagates on CLK rising edge, while SDO updates on CLK falling edge-supporting daisy-chain configurations without external logic.

Output enable (OE) is active-low and fully disables all 16 current sinks independently of latch state; latch enable (LE) controls whether new shift-register data transfers to outputs. The R_EXT terminal sets reference current for all channels with ±1–3% inter-channel matching depending on output voltage and current level.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Channels	16 independent constant-current sinks, each programmable 3–50 mA via R_EXT
Supply Voltage	3.0–5.5 V - compatible with both 3.3 V and 5 V logic systems
Max Output Voltage	16 V - enables driving up to 5 white/blue LEDs in series at typical forward voltage
CLK Frequency	25 MHz - supports >3.2 Mbps serial data throughput for fast-refresh displays
Inter-Channel Current Match	±1% (at ≥1.4 V, 50 mA, V_DD = 5 V) - ensures uniform LED brightness across segments
Propagation Delay	t_PLH1 = 280 ns max (CLK to OUT) - enables sub-350 ns per-bit update in cascaded chains
Thermal Resistance	R_thJA = 75 °C/W (SO-24) - limits junction rise to <45 °C at 320 mW dissipation in still air

Pinout & Package

STP16CP596MTR uses a standard SO-24 (Small Outline, 24-pin) surface-mount package with 1.27 mm pitch, 15.2–15.6 mm body length, and 10.0–10.65 mm width. The exposed pad variant is not used in this MTR variant; thermal path relies on PCB copper area under leads.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Ground reference	Common return for all internal circuits and output current sinks
SDI (Pin 2)	Serial data input	CMOS-compatible input accepting 3.3 V or 5 V logic; internal 150–600 kΩ pull-up
CLK (Pin 3)	Clock input	Edge-triggered rising-edge shift register clock; 25 MHz max frequency
LE (Pin 4)	Latch enable	Active-high signal transferring shift register contents to output latches
OUT0–OUT15 (Pins 5–20)	Constant-current sink outputs	Each drives LED cathodes with regulated current; 16 V max compliance voltage
OE (Pin 21)	Output enable	Active-low global disable; forces all outputs OFF regardless of latch state
SDO (Pin 22)	Serial data output	Shift register Q₁₅ output; changes on CLK falling edge for daisy-chaining
R-EXT (Pin 23)	Current setting reference	Connects external resistor to set full-scale output current (I_OUT ≈ 12.5 V / R_EXT)
VDD (Pin 24)	Power supply	3.0–5.5 V input powering logic and output stages; decoupling required near pin

Key Features

Feature	Design Value
Adjustable output current	Single external resistor (R_EXT) sets all 16 channels identically - simplifies BOM and calibration
Daisy-chain capability	SDO synchronized to CLK falling edge - enables seamless multi-device serial cascading without added timing margin
High-voltage output compliance	16 V rated output voltage - supports longer LED strings without external boost circuitry
Low-voltage operation	Functional down to 3.0 V V_DD - interoperable with modern 3.3 V microcontrollers and FPGAs
Thermal efficiency	SO-24 R_thJA = 75 °C/W - enables 320 mW continuous power dissipation with ≤45 °C junction rise in standard FR4

Applications

LED Signage Panels

Industrial HMI Displays

Use Scenario: Outdoor alphanumeric LED signs requiring uniform brightness across 16×N segments with minimal PCB area.

IC Role / Device Role / Timing Role: Constant-current sink driver managing column current in multiplexed matrix; LE and OE coordinate row scanning timing.

Use Value: ±1% inter-channel match at 50 mA ensures consistent luminance across digits; 16 V compliance allows 4–5 blue LEDs per string without voltage boosters.

Use Scenario: Factory-floor operator panels using red/green status indicators with variable intensity control.

IC Role / Device Role / Timing Role: Serially configured LED driver interfacing directly to 3.3 V ARM Cortex-M MCU GPIOs; OE enables dynamic dimming via PWM.

Use Value: R_EXT-based current tuning permits precise brightness calibration per panel batch; 25 MHz CLK supports real-time status updates during machine cycle transitions.

Architectural Lighting Controls

Test Equipment Indicators

Use Scenario: RGB LED strip controllers where each color channel uses separate STP16CP596MTR for current-matched dimming.

IC Role / Device Role / Timing Role: Sink-side driver for common-anode LED arrays; SDO-to-SDI chaining reduces MCU pin count for multi-zone lighting.

Use Value: 3–50 mA range accommodates low-intensity ambient lighting and high-brightness accent zones; SO-24 footprint eases automated assembly in dense layouts.

Use Scenario: Benchtop test instruments requiring 16 individually controllable status LEDs with stable current over temperature.

IC Role / Device Role / Timing Role: Embedded LED driver co-located with microcontroller on main PCB; LE latching isolates display updates from serial bus noise.

Use Value: ±2% current drift from −40°C to +85°C ensures reliable indicator visibility across environmental chambers; 75 °C/W R_thJA avoids derating in enclosed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283RTJR	16-bit constant-current sink with I²C interface; no shift register; 15–120 mA range; 17 V compliance	Requires I²C host instead of SPI-like serial clock; better for low-pin-count MCUs but lacks daisy-chain flexibility	Select when system uses I²C infrastructure and needs per-channel current registers instead of global R_EXT tuning
STPIC6C595MTR	16-bit shift register with open-drain outputs; no internal current regulation; requires external current-limiting resistors	Lower cost but introduces component variation and board space penalty; no current matching or thermal stability	Select only for non-critical indicators where brightness uniformity and thermal drift are acceptable

Compared with TLC59283RTJR, STP16CP596MTR offers simpler timing and lower MCU overhead via SPI-compatible interface, while STPIC6C595MTR trades precision for cost and flexibility in resistor-based designs.

Availability

STP16CP596MTR is available at Aetrix Electronics and suitable for LED signage panels, industrial HMI displays, architectural lighting controls, and test equipment indicators requiring stable component supply across long-lifecycle production runs.

Supply support for STP16CP596MTR 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 analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The STP16CP596 belongs to ST's LED driver product line, engineered specifically for high-reliability, constant-current LED matrix control in commercial signage and industrial visualization systems.

FAQ

What is the minimum supply voltage required for reliable operation of STP16CP596MTR?

The STP16CP596MTR operates reliably from 3.0 V to 5.5 V. At 3.0 V, it maintains full functionality including 25 MHz clock operation, 16 V output compliance, and 3–50 mA current programming range. Input thresholds scale with VDD, ensuring robust logic recognition down to the minimum supply.

How does the R-EXT pin set output current, and what resistor value yields 20 mA per channel?

The R-EXT pin connects to ground through an external resistor that sets the reference current for all 16 channels. At VDD = 5 V, a 1 kΩ resistor yields approximately 20 mA per output (I_OUT ≈ 12.5 V / R_EXT). The relationship is linear and validated across 3–50 mA; tolerance depends on resistor accuracy and VDD stability.

Can STP16CP596MTR drive LEDs in series, and what is the maximum number supported at 20 mA?

Yes - each output channel supports up to 16 V compliance voltage. At 20 mA, typical forward voltages allow 4 white LEDs (3.2 V each) or 5 blue LEDs (3.0 V each) in series per channel. Total string voltage must remain ≤16 V; exceeding this risks output saturation and reduced current regulation accuracy.

Is thermal management required for continuous 50 mA operation across all 16 channels?

At 50 mA × 16 channels = 800 mA total sink current and 5 V supply, power dissipation reaches ~320 mW. With SO-24 R_thJA = 75 °C/W, junction temperature rise is ~24 °C above ambient - no heatsink needed in standard FR4 with 1 cm² copper pour. For >85 °C ambient or sealed enclosures, add local copper thermal relief.

STP16CP596MTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Linear

Topology:: Shift Register

Internal Switch(s):: Yes

Number of Outputs:: 16

Voltage - Supply (Min):: 3V

Voltage - Supply (Max):: 5.5V

Voltage - Output:: 16V

Current - Output / Channel:: 50mA

Frequency:: 25MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SO

STP16CP596MTR FAQ

1.How can I place an order for STP16CP596MTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16CP596MTR 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 STP16CP596MTR reliable?

The price and inventory of STP16CP596MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16CP596MTR is usually 5 days.

3.What payment methods are accepted for STP16CP596MTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16CP596MTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16CP596MTR?

STP16CP596MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16CP596MTR 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 STP16CP596MTR?

For technical support, including STP16CP596MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16CP596MTR requirements.

6.How does Aetrix verify that STP16CP596MTR is sourced from the original manufacturer or authorized distributors?

All STP16CP596MTR 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 STP16CP596MTR meets industry standards.

7.What is the process for return or replacement of STP16CP596MTR?

All STP16CP596MTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16CP596MTR, 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 STP16CP596MTR part is unused and in its original packaging.

Return procedure for STP16CP596MTR:

1.Submit a request within 90 days.

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

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