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

STMicroelectronics STP16CP05PTR

Name: STP16CP05PTR
Brand: STMicroelectronics
SKU: STP16CP05PTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16CP05PTR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 24-SSOP (0.154", 3.90mm Width)

Datasheet:: STP16CP05PTR.pdf

Description:: IC LED DRVR LINEAR 100MA 24QSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STP16CP05PTR from STMicroelectronics is a 16-channel constant-current LED sink driver IC with serial-in/parallel-out shift register architecture, designed for LED panel displays. It operates from 3.0 V to 5.5 V, delivers adjustable output current (5–100 mA per channel) via external R_EXT, supports 30 MHz clock frequency, and guarantees 20 V output driving capability for series-connected LEDs.

For engineers reviewing the STP16CP05PTR datasheet, STP16CP05PTR pinout, STP16CP05PTR application, or STP16CP05PTR equivalent, key selection criteria include per-channel current accuracy (±1.5% between bits), thermal performance in QSOP-24 package (R_thJA = 55 °C/W), latch-level control timing (t_SETUP(L) = 18 ns), and compatibility with 3.3 V microcontrollers.

Technical Context

The device integrates a 16-bit shift register cascaded with a 16-bit D-type storage latch, enabling synchronous data loading and parallel output latching. Output enable (OE/DM2, active-low) and latch (LE/DM1, level-sensitive) terminals operate independently of CLK edges, supporting flexible timing control in high-speed LED scanning systems.

Each of the 16 output channels uses a regulated current source with dropout voltage as low as 20 mV at 3 mA (3.3 V supply), and current matching accuracy of ±1.5% between channels at 20 mA. The SDO terminal enables daisy-chaining multiple devices without external buffering.

Key Specifications

Parameter	Value and Actual Design Meaning
Output channels	16 independent constant-current sinks for LED anode-to-VDD connection
Output current range	5–100 mA per channel, set by single external R_EXT resistor (200 Ω–4.2 kΩ)
Max clock frequency	30 MHz - enables >480 kbps serial data rate for real-time LED brightness updates
Supply voltage	3.0–5.5 V - compatible with both 3.3 V and 5 V logic domains and microcontrollers
Output voltage capability	Up to 20 V - supports driving 5–6 standard red/green LEDs in series per channel
Current accuracy	±1.5% between bits at 20 mA - ensures uniform LED brightness across display rows/columns
Propagation delay	t_PLH1 = 24 ns (typ.) at 5 V - enables sub-40 ns channel update latency for high-refresh-rate panels

Pinout & Package

STP16CP05PTR is supplied in QSOP-24 package (3.91 mm × 6.00 mm × 1.62 mm), featuring gull-wing leads and optimized thermal resistance (R_thJA = 55 °C/W). The exposed pad variant is not used in this order code.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground reference	Primary return path for all 16 output currents and internal logic; must connect to low-impedance PCB ground plane
2 SDI	Serial data input	CMOS-compatible input accepting 3.3 V logic; feeds shift register LSB-first on rising CLK edge
3 CLK	Clock input	Edge-triggered shift register clock; max 30 MHz operation with t_wCLK ≥ 8 ns pulse width
4 LE/DM1	Latch enable	Level-sensitive control: HIGH transfers shift register contents to output latch; LOW holds previous state
5–20 OUT0–OUT15	Constant-current outputs	Sink terminals delivering precise current to LED cathodes; each rated for 20 V max V_DS
21 OE/DM2	Output enable	Active-low global shutdown: HIGH forces all outputs OFF regardless of latch state
22 SDO	Serial data out	Daisy-chain interface: outputs bit shifted out of 16-bit register; enables multi-device cascading
23 R-EXT	Current programming	Analog input for external resistor; sets all 16 channels identically (I_OUT ∝ 1/R_EXT)
24 VDD	Power supply	3.0–5.5 V input powering logic and output stages; requires local 10 μF decoupling capacitor

Key Features

Feature	Design Value
Adjustable per-channel current	Single R_EXT resistor configures identical 5–100 mA output across all 16 channels
High-speed serial interface	30 MHz clock support with 11 ns (min) CLK→SDO propagation enables >1 Mbit/s daisy-chain throughput
Low dropout voltage	20 mV typical at 3 mA (3.3 V supply) - minimizes power loss and heat generation per channel
Thermal protection	Integrated junction temperature cutoff at 170 °C - prevents damage during sustained high-current operation
ESD robustness	2 kV HBM / 200 V MM rating - ensures reliability during board assembly and handling

Applications

Indoor LED Video Wall

Automotive Dashboard Backlight

Use Scenario: High-resolution indoor display using RGB SMD LEDs arranged in 16×N matrix with PWM dimming.

IC Role / Device Role / Timing Role: Sink driver providing synchronized column current control; latch (LE/DM1) aligned with row scan timing.

Use Value: ±1.5% current matching ensures pixel-to-pixel brightness uniformity; 20 V drive supports 5-LED red strings per channel.

Use Scenario: Dimmable white LED backlight for TFT instrument cluster with ambient light compensation.

IC Role / Device Role / Timing Role: Constant-current sink managing 16 discrete backlight zones; OE/DM2 used for global brightness ramping.

Use Value: R_EXT-based current tuning allows factory calibration to ±3% luminance tolerance; 3.3 V compatibility matches MCU I/O voltage.

Industrial Status Panel

Point-of-Sale Display Module

Use Scenario: 16-segment status indicator with mixed-color LEDs (red/green/yellow) for machine health monitoring.

IC Role / Device Role / Timing Role: Serially updated sink driver enabling remote configuration via UART-to-SPI bridge.

Use Value: SDO daisy-chaining reduces wiring count across multi-board assemblies; 100 mA per channel drives high-brightness indicators.

Use Scenario: Compact retail price display using 16-digit 7-segment modules with individual digit brightness control.

IC Role / Device Role / Timing Role: Shift-register-based segment driver; LE/DM1 strobed per digit to minimize ghosting.

Use Value: 40 ns output setup time (typ.) enables >2 kHz multiplexing without visible flicker; QSOP-24 footprint saves PCB area.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-channel constant-current LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLC59283RTJR	Higher max current (120 mA), but fixed 5 V only supply; no R_EXT adjustment - uses internal DAC	Requires external 5 V rail; lacks 3.3 V MCU compatibility and fine-grained analog current tuning	Select when higher peak current and integrated PWM dimming are prioritized over supply flexibility
MAX7219CWG+	Integrated 8×8 matrix decoding and SPI interface; 40 V output but only 8 channels; includes BCD decode and scan control	Designed for 7-segment/8×8 arrays - not suitable for arbitrary 16-output linear configurations	Choose for simplified firmware in numeric display applications where built-in decoding offsets layout complexity

Compared with TLC59283RTJR and MAX7219CWG+, STP16CP05PTR provides superior supply voltage flexibility (3.0–5.5 V), analog R_EXT-based current tuning across full 5–100 mA range, and direct 16-output mapping ideal for custom LED layouts without matrix constraints.

Availability

STP16CP05PTR is available at Aetrix Electronics and suitable for indoor LED video walls, automotive dashboard backlights, industrial status panels, and point-of-sale display modules requiring stable component supply and long-term production continuity.

Supply support for STP16CP05PTR 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 power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

STP16CP05PTR belongs to ST's LED driver portfolio targeting high-reliability, low-voltage display systems - engineered for brightness uniformity, thermal resilience, and seamless integration with 3.3 V microcontrollers.

FAQ

What is the minimum recommended R_EXT value for STP16CP05PTR?

The minimum recommended R_EXT is 200 Ω, which sets the maximum output current to 100 mA per channel at 25 °C. Using lower values risks exceeding absolute maximum ratings (IO = 100 mA, TJ = 170 °C) and degrades current accuracy due to increased thermal drift. ST specifies R_EXT = 200 Ω as the lower limit in Table 9 of DS4850 Rev 14.

Can STP16CP05PTR drive LEDs directly from a 3.3 V supply?

Yes - STP16CP05PTR operates down to 3.0 V and is fully compatible with 3.3 V microcontrollers. Its inputs meet VIH ≥ 0.7 VDD and VIL ≤ 0.3 VDD thresholds at 3.3 V, and its 20 V output voltage capability allows driving multiple LEDs in series even with low VDD. Typical IDD(ON) is 4.5 mA at 3.3 V with all outputs active.

How does the LE/DM1 and OE/DM2 pin interaction affect output behavior?

LE/DM1 controls data transfer from shift register to output latch (level-sensitive: HIGH loads, LOW holds), while OE/DM2 globally enables/disables all outputs (active-low: LOW enables, HIGH forces OFF). Their functions are independent - e.g., OE/DM2 = HIGH blanks display regardless of latch state, and LE/DM1 = LOW preserves prior data during serial updates.

Is thermal derating required when operating STP16CP05PTR at 100 mA per channel?

Yes - at full 100 mA per channel (1.6 A total output current), power dissipation exceeds 1 W in QSOP-24 (R_thJA = 55 °C/W). Derating is required above 85 °C ambient: ST specifies T_J(max) = 125 °C operating limit, so maximum allowable ambient drops to ~107 °C at 50 mA/channel and ~75 °C at 100 mA/channel with standard PCB copper area.

STP16CP05PTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 24-SSOP (0.154", 3.90mm 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:: 20V

Current - Output / Channel:: 100mA

Frequency:: 30MHz

Dimming:: -

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-QSOP

STP16CP05PTR FAQ

1.How can I place an order for STP16CP05PTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16CP05PTR 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 STP16CP05PTR reliable?

The price and inventory of STP16CP05PTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16CP05PTR is usually 5 days.

3.What payment methods are accepted for STP16CP05PTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16CP05PTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16CP05PTR?

STP16CP05PTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16CP05PTR 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 STP16CP05PTR?

For technical support, including STP16CP05PTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16CP05PTR requirements.

6.How does Aetrix verify that STP16CP05PTR is sourced from the original manufacturer or authorized distributors?

All STP16CP05PTR 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 STP16CP05PTR meets industry standards.

7.What is the process for return or replacement of STP16CP05PTR?

All STP16CP05PTR units undergo pre-shipment inspection (PSI). If there is an issue with STP16CP05PTR, 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 STP16CP05PTR part is unused and in its original packaging.

Return procedure for STP16CP05PTR:

1.Submit a request within 90 days.

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

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