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onsemi CS5206-1GT3
- Part No.:
- CS5206-1GT3
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
CS5206-1GT3.pdf
- Description:
- IC REG LINEAR POS ADJ 6A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,779
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Product details
Overview
CS5206-1GT3 from onsemi is a 6.0 A adjustable-output linear regulator in TO-220-3 package, delivering 1.25 V to 13 V output with ±1% reference voltage accuracy, 1.3 V dropout at full load, and integrated thermal shutdown, overcurrent, and safe operating area (SOA) protection. It serves as a post-regulator for microprocessor core supplies requiring fast transient response and low-voltage operation.
For engineers reviewing the CS5206-1GT3 datasheet, pinout, applications, or equivalent options, key selection criteria include its adjustable output architecture, 6 A continuous current capability, TO-220-3 thermal performance (RθJC = 1.6°C/W), and design-specific requirements for external resistor divider and output capacitor stability.
Technical Context
The CS5206-1GT3 employs a composite PNP-NPN output stage optimized for high-current linear regulation with low dropout. Its internal bandgap reference (1.254 V typical) feeds an error amplifier that controls the pass transistor via an adjustable feedback loop referenced to the Adj pin.
Protection is implemented through three independent circuits: thermal shutdown activating at 150–180°C with 25°C hysteresis, SOA limiting output current inversely with VIN–VOUT differential, and foldback overcurrent protection engaging at ≥6.5 A under nominal conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6.0 A continuous - supports high-power microprocessor core rails without parallel devices. |
| Reference Voltage | 1.254 V ±1% - sets precision output range (1.25–13 V) via external R1/R2 divider. |
| Dropout Voltage | 1.3 V @ 6.0 A - enables operation with minimal VIN–VOUT margin, critical for low-voltage systems. |
| Ripple Rejection | 82 dB @ 120 Hz - suppresses input ripple from switching pre-regulators feeding the linear stage. |
| Quiescent Current | 10 mA max at full load - minimizes no-load power loss in always-on subsystems. |
| Thermal Shutdown | 150–180°C junction range - provides fail-safe protection during sustained overload or inadequate heatsinking. |
| Load Regulation | 0.4% max - ensures stable output across 10 mA–6 A load steps, essential for dynamic CPU workloads. |
Pinout & Package
CS5206-1GT3 uses the TO-220-3 (Case 221A) package with tab connected to VOUT for direct thermal coupling to heatsink. Pin 1 is Adj (adjust reference node), Pin 2 is VOUT (regulated output and case connection), Pin 3 is VIN (input supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj) | Adjust reference input | Low-side node of internal 1.25 V reference; connects to R2 in external divider; 50 μA bias current flows here. |
| 2 (VOUT) | Regulated output / case | Delivers regulated voltage; metal tab is electrically connected to this pin-requires isolation if heatsink is grounded. |
| 3 (VIN) | Input supply | Accepts up to 17 V DC input; dropout behavior begins when VIN–VOUT falls below 1.3 V at 6 A. |
Key Features
| Feature | Design Value |
|---|---|
| Composite PNP-NPN output stage | Enables 6 A output with lower saturation voltage than single-transistor designs, reducing dropout and heat generation. |
| SOA protection | Dynamically limits maximum output current as VIN–VOUT increases, preventing device destruction during high-differential-voltage faults. |
| External Kelvin sense compatibility | Supports remote sensing via dedicated trace routing from VOUT pin to load, improving load regulation accuracy beyond PCB trace resistance limits. |
| Stability with tantalum output capacitors | Guaranteed stable with ≥22 μF tantalum COUT (ESR ~0.5–2 Ω); avoids ceramic capacitor instability risks in high-current applications. |
| Adjust pin current specification | 50 μA typical (±0.2 μA variation) - enables precise output voltage calculation and minimizes R2-induced error in divider design. |
Applications
| Microprocessor Core Supply | FPGA I/O Bank Regulator |
|---|---|
Use Scenario: Providing clean, tightly regulated 1.2 V or 1.8 V to CPU cores with rapid load transients during burst-mode execution. IC Role / Device Role / Timing Role: Primary post-regulator converting intermediate 5 V/12 V bus to final core voltage; handles >3 A step loads within 10 μs. Use Value: 82 dB ripple rejection and fast transient response maintain voltage within ±1% during 4 A/μs load steps, preventing logic errors. | Use Scenario: Delivering stable 3.3 V to FPGA I/O banks supporting multiple interface standards (LVCMOS, SSTL) with varying drive strength. IC Role / Device Role / Timing Role: Fixed or adjustable local regulator placed near FPGA package; supplies 2–5 A per bank with low noise. Use Value: 0.003% RMS output noise and 0.4% load regulation ensure signal integrity across wide temperature ranges (−40°C to +70°C). |
| Industrial PLC Power Module | Test Equipment DC Source |
Use Scenario: Generating programmable 2.5–12 V outputs in modular PLC backplanes where field-replaceable power sections are required. IC Role / Device Role / Timing Role: Adjustable voltage source configured via DIP-switched resistor networks; operates continuously at 4–6 A. Use Value: SOA and thermal shutdown enable reliable operation under variable ambient temperatures (−40°C to +70°C) and partial heatsink fouling. | Use Scenario: Serving as the main 0–10 V, 6 A bench power supply channel with analog voltage control and current limiting. IC Role / Device Role / Timing Role: Linear pass element controlled by external op-amp; delivers lab-grade low-noise, low-drift output. Use Value: 0.5% temperature stability and 0.003%/W thermal regulation minimize drift during extended calibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable high-current linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1083CP#PBF | 7.5 A max, 1.3 V dropout @ 7.5 A, 1.25 V ref, but higher quiescent current (15 mA) and no SOA protection. | Lacks dynamic SOA current limiting; requires external current-sense circuitry for overload safety in industrial environments. | Select when higher peak current is needed and SOA protection can be implemented externally. |
| TPS7A8300RGRT | 2 A max, 0.6 V dropout @ 2 A, 1.2 V ref, integrated soft-start and power-good, but not pin-compatible and lower current rating. | Designed for point-of-load use with digital sequencing; unsuitable as direct replacement for 6 A system-level regulation. | Choose only for low-current, digitally managed subsystems where footprint and feature set outweigh raw current capacity. |
Compared with LT1083CP#PBF and TPS7A8300RGRT, the CS5206-1GT3 uniquely combines 6 A continuous output, SOA protection, and TO-220-3 thermal performance in a single-package solution-making it optimal for unmanaged high-power analog or legacy digital rail generation where reliability under fault conditions is non-negotiable.
Availability
CS5206-1GT3 is available at Aetrix Electronics and suitable for microprocessor core supplies, FPGA I/O regulation, industrial PLC power modules, and test equipment DC sources requiring stable component supply with long-term manufacturability and thermal robustness.
Supply support for CS5206-1GT3 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The CS5206-1GT3 belongs to onsemi's high-current linear regulator product line, engineered specifically for post-regulation of switching power supplies in computing and industrial control systems where low noise, fast transient response, and fault resilience are mandatory.
FAQ
What output voltage range does the CS5206-1GT3 support?
The CS5206-1GT3 supports an adjustable output voltage range of 1.25 V to 13 V, set using two external resistors (R1 and R2) connected to the Adj pin. The internal 1.254 V reference voltage (±1%) forms the basis of this adjustment, and the output is calculated as VOUT = 1.254 × (1 + R1/R2) + IAdj × R2, where IAdj is typically 50 μA. This makes CS5206-1GT3 suitable for custom voltage rails in microprocessor, FPGA, and instrumentation applications.
Does the CS5206-1GT3 require an output capacitor, and what type is recommended?
Yes, the CS5206-1GT3 requires an output capacitor for stability, and a minimum of 22 μF tantalum is specified. Aluminum electrolytic capacitors are acceptable but exhibit greater ESR variation at low temperatures; ceramic capacitors are not recommended due to near-zero ESR, which can cause oscillation. For best transient response-especially in microprocessor applications-a parallel network of tantalum and ceramic capacitors is advised, placed as close as possible to the load. This requirement is intrinsic to CS5206-1GT3's compensation architecture.
How does the Safe Operating Area (SOA) protection function in the CS5206-1GT3?
The CS5206-1GT3 implements SOA protection by dynamically reducing the maximum allowable output current as the input-to-output voltage differential (VIN–VOUT) increases. This prevents thermal runaway and second breakdown in the PNP-NPN output stage during high-differential-voltage conditions-such as startup into heavy capacitive loads or input surges. Unlike simple current limiting, SOA protection in CS5206-1GT3 is voltage-dependent and built into the die, eliminating need for external sensing. This behavior is documented in the datasheet's protection section and applies directly to CS5206-1GT3 operation.
Can the CS5206-1GT3 be used without a heatsink?
No-the CS5206-1GT3 cannot be operated reliably at 6 A without a heatsink. With a junction-to-case thermal resistance (RθJC) of 1.6°C/W and typical power dissipation exceeding 7 W at 5 V dropout, even modest ambient temperatures will exceed the 150°C maximum junction limit. Thermal compound and a properly sized aluminum heatsink are mandatory. The TO-220-3 package tab is electrically connected to VOUT, so electrical isolation (e.g., mica washer + thermal grease) must be used if the heatsink is grounded. This thermal requirement is fundamental to CS5206-1GT3 deployment.
Is the CS5206-1GT3 pin-compatible with other variants like CS5206-3GT3 or CS5206-5GT3?
No-CS5206-1GT3 is not pin-compatible with CS5206-3GT3 or CS5206-5GT3. While all share the same TO-220-3 package and pin 1–3 physical layout, their pin functions differ: CS5206-1GT3 uses Pin 1 as Adj, whereas CS5206-3GT3 and CS5206-5GT3 use Pin 1 as GND. Interchanging them will result in incorrect regulation or immediate failure. The datasheet explicitly defines separate pin descriptions for adjustable (CS5206-1) versus fixed-output (CS5206-3/5) versions, confirming CS5206-1GT3's unique Adj-pin functionality.
CS5206-1GT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 13V
- Voltage Dropout (Max):
- 1.4V @ 6A
- Current - Output:
- 6A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 82dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
CS5206-1GT3 FAQ
1.How can I place an order for CS5206-1GT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS5206-1GT3 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 CS5206-1GT3 reliable?
The price and inventory of CS5206-1GT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS5206-1GT3 is usually 5 days.
3.What payment methods are accepted for CS5206-1GT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS5206-1GT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS5206-1GT3?
CS5206-1GT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS5206-1GT3 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 CS5206-1GT3?
For technical support, including CS5206-1GT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS5206-1GT3 requirements.
6.How does Aetrix verify that CS5206-1GT3 is sourced from the original manufacturer or authorized distributors?
All CS5206-1GT3 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 CS5206-1GT3 meets industry standards.
7.What is the process for return or replacement of CS5206-1GT3?
All CS5206-1GT3 units undergo pre-shipment inspection (PSI). If there is an issue with CS5206-1GT3, 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 CS5206-1GT3 part is unused and in its original packaging.
Return procedure for CS5206-1GT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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