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STMicroelectronics STP08CDC596M
- Part No.:
- STP08CDC596M
- Manufacturer:
- STMicroelectronics
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
STP08CDC596M.pdf
- Description:
- IC LED DRIVER LINEAR 120MA 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,271
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Product details
Overview
STP08CDC596M from STMicroelectronics is an 8-bit constant-current LED sink driver with integrated open/short-to-GND/short-to-VLED error detection, serial-in/parallel-out shift register architecture, 20–120 mA per channel output current (adjustable via REXT), 16 V output voltage capability, and 25 MHz clock frequency - designed for high-reliability LED panel displays such as traffic signage.
For engineers reviewing the STP08CDC596M datasheet, STP08CDC596M pinout, STP08CDC596M application, or STP08CDC596M equivalent, this device supports real-time fault feedback via SDO, requires no PCB footprint change versus standard shift-register drivers, and delivers precise current matching (±3% between bits) without external sensing components.
Technical Context
The STP08CDC596M integrates an 8-bit serial-in/parallel-out shift register cascaded to an 8-bit D-type storage latch, feeding eight matched regulated current sinks. Its error detection mode operates in three phases - entry, sampling, and resume - triggered by defined OE/DM2 and LE/DM1 logic sequences over five clock cycles.
Each output channel provides programmable constant current (20–120 mA) referenced to a single external REXT resistor, with dropout voltage ≤0.7 V at full load and guaranteed 16 V output swing. Detection logic evaluates output voltage and current thresholds (e.g., IO,DEC ≤ 0.5 × IO indicates open/short-to-GND; VO ≥ 2.4 V indicates short-to-VLED) within ≤2 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 8 independent constant-current sink outputs, each capable of driving LEDs in series up to 16 V total forward voltage. |
| Output current range | 20–120 mA per channel, set precisely by one external REXT resistor (e.g., 910 Ω → ~20 mA; 360 Ω → ~51 mA). |
| Current accuracy | ±3% matching between channels, ±10% variation across devices - enables uniform LED brightness without per-channel trimming. |
| Max clock frequency | 25 MHz serial clock - supports high-speed data streaming for large LED matrices with minimal update latency. |
| Error detection coverage | Detects open-circuit, short-to-GND, and short-to-VLED faults on all 8 outputs; results returned serially via SDO in same format as normal data. |
| Supply voltage | 3.3 V to 5.5 V operation - compatible with modern microcontrollers and industrial logic levels without level-shifting. |
| Thermal resistance | RthJA = 125 °C/W (SO-16 package) - requires moderate PCB copper area for sustained 120 mA/channel operation. |
Pinout & Package
STP08CDC596M is supplied in SO-16 (Small Outline Integrated Circuit, 16-pin, 1.27 mm pitch) package with gull-wing leads and standard JEDEC MO-012AC dimensions (D = 9.8–10.0 mm, E = 5.8–6.2 mm). The exposed pad variant (STP08CDC596XTTR) is not applicable to this orderable part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Common return path for all internal circuitry and output current sinks; must be low-impedance connection. |
| 2 SDI | Serial data input | Accepts 3.3/5 V logic-level serial data; sampled on rising CLK edge; feeds shift register LSB-first. |
| 3 CLK | Serial clock input | 25 MHz max rate; rising edge shifts data into register; falling edge updates SDO output. |
| 4 LE/DM1 | Latch enable / Detection mode 1 | Active-high latch control; during detection mode, coordinates phase transitions with OE/DM2. |
| 5–12 OUT0–OUT7 | Constant-current sink outputs | Eight independent N-channel current sinks; each drives LED cathode to GND with regulated current. |
| 13 OE/DM2 | Output enable / Detection mode 2 | Active-low output control; in detection mode, initiates fault sampling when pulsed low after latch. |
| 14 SDO | Serial data output | Feedback path for detection results; outputs 8-bit status (1 = OK, 0 = fault) MSB-first after detection cycle. |
| 15 R-EXT | Current programming terminal | Connects external resistor to set all 8 output currents simultaneously; internal 1.25 V reference applied. |
| 16 VDD | Positive supply | 3.3–5.5 V power rail; supplies logic core and current regulation circuitry; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated fault detection | Per-channel open, short-to-GND, and short-to-VLED detection without added pins or external circuitry - reduces BOM count and board space. |
| Single-resistor current tuning | One external REXT sets identical current across all 8 channels - eliminates per-channel calibration and simplifies thermal design. |
| No footprint change vs legacy drivers | Pin-compatible with standard 8-bit shift-register LED drivers (e.g., STP08DP05) - allows drop-in reliability upgrade without PCB redesign. |
| High-speed serial interface | 25 MHz clock support enables >200 kbps data throughput - suitable for dynamic full-color signage with rapid frame updates. |
| Wide output voltage headroom | 16 V output capability permits driving up to 5 white LEDs (3.2 V each) in series per channel - reduces string count and driver IC count. |
Applications
| Traffic Signage | Industrial Panel Displays |
|---|---|
|
Use Scenario: Outdoor LED message signs for highway variable speed limits and lane control. IC Role / Device Role / Timing Role: Constant-current sink driver with real-time open/short detection for each LED segment in multi-row alphanumeric arrays. Use Value: Prevents undetected LED failures that compromise regulatory compliance; enables automated remote diagnostics via SDO feedback stream. |
Use Scenario: Factory HMI panels showing machine status, alarms, and production metrics under wide temperature (-40°C to +125°C) conditions. IC Role / Device Role / Timing Role: Serially controlled LED driver with latch-based static display hold and fault reporting for safety-critical indicators. Use Value: Maintains display integrity in harsh environments; detection mode confirms LED continuity before operator interaction begins. |
| Public Transit Displays | Architectural LED Lighting |
|
Use Scenario: Bus/train destination signs with segmented red/green/yellow LEDs requiring long-term reliability and maintenance alerts. IC Role / Device Role / Timing Role: Fault-aware LED sink managing multiple parallel strings per channel; SDO reports per-segment failure to central controller. Use Value: Reduces scheduled maintenance visits by 40%+ through predictive fault logging; avoids complete sign blackout from single LED failure. |
Use Scenario: Linear architectural lighting strips where individual LED segments must remain lit for aesthetic consistency. IC Role / Device Role / Timing Role: High-current (120 mA) sink enabling bright, uniform illumination per segment; REXT tuning matches luminance across batches. Use Value: Eliminates visible brightness gradients caused by current mismatch; supports 16 V headroom for mixed-color LED strings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59283DR | No integrated fault detection; 15–100 mA range; 17 V output; uses internal current reference (no REXT). | Suitable for cost-sensitive signage without diagnostic requirements; lacks SDO feedback path. | Select when system-level fault monitoring is handled externally and board space is constrained. |
| MAX7219CWG+ | Includes built-in BCD decode, scan limit, intensity control; 20 mA max per segment; SPI interface only. | Targeted at 7-segment/matrix displays with microcontroller offload; not optimized for high-current LED strings. | Select for compact numeric displays where integrated decoding and brightness control outweigh current capability needs. |
Compared with TLC59283DR and MAX7219CWG+, the STP08CDC596M uniquely combines high-current drive (120 mA), integrated fault detection with serial feedback, and pin compatibility with legacy shift-register drivers - making it optimal for reliability-critical outdoor LED systems requiring zero-footprint upgrades.
Availability
STP08CDC596M is available at Aetrix Electronics and suitable for traffic signage, industrial HMIs, and public transit displays requiring stable component supply, extended temperature operation (-40°C to +125°C), and long-term manufacturing continuity.
Supply support for STP08CDC596M 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 emphasis on reliability and energy efficiency.
The STP08CDC596M belongs to ST's LED driver portfolio targeting high-integrity visual systems; its design prioritizes fault resilience, thermal robustness, and seamless integration into existing serial LED control architectures.
FAQ
What is the minimum REXT value supported for 120 mA output current?
The STP08CDC596M achieves 120 mA per channel with REXT ≈ 360 Ω, based on its internal 1.25 V reference and current equation IOUT = 1.25 V / REXT. Using lower values risks exceeding absolute maximum output current (120 mA) and may degrade current matching or thermal performance. ST specifies 360 Ω as the minimum validated resistor for full-range operation.
How does the error detection mode interact with normal display operation?
Error detection operates in brief, non-disruptive bursts: the device enters detection mode via a 5-clock sequence on OE/DM2 and LE/DM1, samples all 8 outputs in ≤2 µs, returns results via SDO, then resumes normal operation using the 5-clock exit sequence. Display data remains latched during detection, so LED states do not flicker or reset.
Can STP08CDC596M drive RGB LED strings with independent color control?
No - the STP08CDC596M provides only common-anode sink control per channel; all 8 outputs share the same REXT-set current value and cannot be individually tuned. For RGB applications requiring per-color current adjustment, discrete drivers (e.g., STP16DP05) or multi-channel ICs with independent current registers are required.
Is thermal derating required when operating at 120 mA per channel in SO-16 package?
Yes - at full 120 mA per channel (960 mA total sink current), power dissipation exceeds 1 W in SO-16 (RthJA = 125 °C/W). To maintain TJ ≤ 125°C at 85°C ambient, ≥4 cm² of 2-oz copper pour with thermal vias under the package is recommended. Derating to 80 mA/channel eliminates need for enhanced cooling in most industrial layouts.
STP08CDC596M 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):
- 3.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 16V
- Current - Output / Channel:
- 120mA
- Frequency:
- 25MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
STP08CDC596M FAQ
1.How can I place an order for STP08CDC596M through Aetrix?
Please submit a Request for Quotation (RFQ) for STP08CDC596M 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 STP08CDC596M reliable?
The price and inventory of STP08CDC596M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP08CDC596M is usually 5 days.
3.What payment methods are accepted for STP08CDC596M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP08CDC596M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STP08CDC596M?
STP08CDC596M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STP08CDC596M 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 STP08CDC596M?
For technical support, including STP08CDC596M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP08CDC596M requirements.
6.How does Aetrix verify that STP08CDC596M is sourced from the original manufacturer or authorized distributors?
All STP08CDC596M 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 STP08CDC596M meets industry standards.
7.What is the process for return or replacement of STP08CDC596M?
All STP08CDC596M units undergo pre-shipment inspection (PSI). If there is an issue with STP08CDC596M, 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 STP08CDC596M part is unused and in its original packaging.
Return procedure for STP08CDC596M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STP08CDC596M Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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