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onsemi CS5206-3GDP3
- Part No.:
- CS5206-3GDP3
- Manufacturer:
- onsemi
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
CS5206-3GDP3.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:445
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Product details
Overview
CS5206-3GDP3 from onsemi is a 6.0 A fixed-output linear regulator delivering 3.3 V ±2% with 1.3 V dropout at full load, thermal shutdown, overcurrent protection, and SOA limiting-designed for microprocessor post-regulation in high-current embedded power rails.
For engineers reviewing the CS5206-3GDP3 datasheet, pinout, applications, or equivalent options, key selection criteria include output accuracy under load variation, thermal performance in D2PAK-3 packages, dropout behavior across input voltage differentials, and fault response timing in high-power DC/DC cascades.
Technical Context
The CS5206-3GDP3 implements a composite PNP-NPN pass transistor architecture with internal bandgap reference and error amplifier feedback loop. Its SOA protection dynamically reduces maximum output current as VIN–VOUT increases, preventing thermal runaway during wide-input-range operation.
It requires external tantalum output capacitance (≥22 μF) for stability due to ESR-dependent loop compensation. The device operates with quiescent current ≤10 mA at full load and supports Kelvin-sense–compatible layout via dedicated GND pin placement in D2PAK-3 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - tight regulation ensures stable core voltage for 3.3 V microcontrollers and FPGAs under dynamic load. |
| Max Output Current | 6.0 A - supports high-current SoC power domains without external current boosting. |
| Dropout Voltage | 1.3 V @ 6.0 A - enables operation with minimal VIN–VOUT margin, reducing heat generation in low-headroom supplies. |
| Thermal Shutdown | 150 °C activation - protects against sustained overload or inadequate heatsinking in enclosed industrial enclosures. |
| Ripple Rejection | 75 dB @ 120 Hz - suppresses AC line ripple from upstream switching converters feeding the linear stage. |
| Quiescent Current | 10 mA max @ 9 V input - minimizes no-load power loss in always-on subsystems. |
| Load Regulation | 0.4% max - maintains output accuracy across 10 mA to 6.0 A load range, critical for mixed-signal system stability. |
Pinout & Package
D2PAK-3 surface-mount package with exposed thermal pad (case = VOUT), optimized for PCB copper pour heatsinking and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal error amplifier and protection circuitry; must be low-impedance connection to minimize noise coupling. |
| 2 | VOUT | Regulated 3.3 V output; case-connected for direct thermal conduction to PCB heatsink area. |
| 3 | VIN | Input supply rail; accepts up to 17 V DC, requiring ≥10 μF input capacitance for transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| SOA Protection | Automatically scales current limit vs. VIN–VOUT differential to prevent second breakdown in high-voltage-drop conditions. |
| Fast Transient Response | Stabilizes within microseconds after 50% load step due to high-gain error amplifier and low-output-impedance design. |
| Thermal Hysteresis | 25 °C - prevents oscillation near shutdown threshold by holding off restart until junction cools sufficiently. |
| Low Dropout Architecture | 1.3 V dropout at 6.0 A enables use with 5 V input for 3.3 V rail, reducing wasted power vs. legacy 2+ V dropout regulators. |
| Fixed Output Trim | ±2% initial accuracy eliminates need for external resistor network calibration in production test. |
Applications
| Industrial PLC I/O Module Power | Embedded Vision System Core Rail |
|---|---|
Use Scenario: Powers FPGA configuration logic and sensor interface ICs in DIN-rail mounted programmable controllers operating continuously at 60 °C ambient. IC Role / Device Role / Timing Role: Primary 3.3 V post-regulator downstream of 12 V buck converter, providing clean, low-noise supply for digital logic and ADC references. Use Value: 75 dB ripple rejection and 0.4% load regulation ensure bit-error-free communication between FPGA and isolated CAN transceivers under motor-drive EMI stress. |
Use Scenario: Supplies image signal processor (ISP) and MIPI CSI-2 serializer in edge AI camera with burst-mode processing loads up to 5.2 A. IC Role / Device Role / Timing Role: High-current LDO delivering stable 3.3 V to ISP core, synchronized with frame-triggered power gating. Use Value: Fast transient response (<5 μs recovery) prevents voltage droop-induced frame corruption during rapid CPU-to-ISP workload shifts. |
| Medical Diagnostic Imaging Subsystem | Test & Measurement Equipment Digital Backplane |
Use Scenario: Provides regulated 3.3 V to analog front-end (AFE) and data acquisition ASICs in portable ultrasound units with battery + boost converter input. IC Role / Device Role / Timing Role: Low-noise linear regulator isolating sensitive analog signal chain from noisy digital switching stages. Use Value: 0.003% RMS output noise and Kelvin-sense–compatible GND pin reduce measurement uncertainty in sub-mV-level bio-signal amplification. |
Use Scenario: Powers FPGA-based pattern generators and high-speed comparators in automated test equipment requiring precise voltage margins across temperature. IC Role / Device Role / Timing Role: Precision voltage source for reference voltage distribution across multi-board backplane with distributed ground paths. Use Value: ±2% output accuracy maintained from −40 °C to +70 °C enables pass/fail margin testing without recalibration across environmental chambers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1585A-3.3 | 6 A rated, 3.3 V fixed, but 1.5 V dropout @ 6 A and no SOA protection; higher quiescent current (15 mA). | Lacks dynamic SOA limiting-requires external current limiting for wide VIN–VOUT ranges; less robust in overload scenarios. | Prefer CS5206-3GDP3 where input voltage varies widely or fault tolerance is critical. |
| TPS7A8300RGRT | 3 A max, 3.3 V fixed, 0.6 V dropout @ 3 A, integrated soft-start, but lower current rating and no thermal hysteresis. | Not suitable for 6 A loads; designed for point-of-load regulation in space-constrained PCBs rather than high-power post-regulation. | Choose CS5206-3GDP3 when full 6 A capability and ruggedized thermal management are required. |
Compared with LT1585A-3.3 and TPS7A8300RGRT, the CS5206-3GDP3 delivers higher current capacity with active SOA protection and tighter thermal hysteresis-making it uniquely suited for industrial-grade 6 A 3.3 V rails where reliability under overload and thermal stress is non-negotiable.
Availability
CS5206-3GDP3 is available at Aetrix Electronics and suitable for industrial PLCs, embedded vision systems, medical imaging subsystems, and test equipment requiring stable component supply with long-term lifecycle support.
Supply support for CS5206-3GDP3 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, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
The CS5206-3GDP3 belongs to the CS5206-X family of high-current linear regulators engineered for post-regulation in microprocessor and FPGA power systems where low dropout, fast transient response, and robust fault protection are essential.
FAQ
What is the maximum input voltage rating for the CS5206-3GDP3?
The CS5206-3GDP3 has an absolute maximum supply voltage (VCC) rating of 17 V. Operation above this level risks permanent damage to the internal pass transistor and protection circuitry. For reliable long-term use, design input rails to stay ≤15 V under worst-case transient conditions, as specified in the electrical characteristics table.
Does the CS5206-3GDP3 require an external capacitor on the adjust pin?
No-the CS5206-3GDP3 is the fixed 3.3 V version and does not have an Adjust (Adj) pin. Only the CS5206-1 adjustable variant uses the Adj pin and requires a bypass capacitor (e.g., 25 μF) for improved ripple rejection and transient response. The CS5206-3GDP3 has GND, VOUT, and VIN pins only.
Can the CS5206-3GDP3 be used without a heatsink?
The CS5206-3GDP3 can operate without an external heatsink only at very low power dissipation (e.g., <1 W). At 6 A with 2 V dropout, it dissipates 12 W-requiring a properly sized PCB copper pour or bolted heatsink. Its RΘJC is 1.6 °C/W, so junction temperature rise depends critically on thermal interface quality and ambient airflow.
What type of output capacitor is recommended for the CS5206-3GDP3?
A minimum 22 μF tantalum capacitor is recommended for the CS5206-3GDP3 output, per the datasheet's stability requirements. Aluminum electrolytic capacitors may be used but exhibit larger ESR and temperature drift. Ceramic capacitors alone are not advised due to near-zero ESR causing potential instability; if used, they must be paralleled with ≥10 mΩ ESR tantalum or polymer types.
Is the CS5206-3GDP3 RoHS compliant and lead-free?
Yes-the CS5206-3GDP3 is manufactured in compliance with RoHS Directive 2011/65/EU and is lead-free. The "G" in the part number denotes green (halogen-free) packaging, and the D2PAK-3 package uses matte tin lead finish. Full compliance documentation is available through onsemi's product change notifications and material declarations.
CS5206-3GDP3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 6A
- Current - Output:
- 6A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-3
CS5206-3GDP3 FAQ
1.How can I place an order for CS5206-3GDP3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS5206-3GDP3 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 CS5206-3GDP3 reliable?
The price and inventory of CS5206-3GDP3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS5206-3GDP3 is usually 5 days.
3.What payment methods are accepted for CS5206-3GDP3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS5206-3GDP3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS5206-3GDP3?
CS5206-3GDP3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS5206-3GDP3 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 CS5206-3GDP3?
For technical support, including CS5206-3GDP3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS5206-3GDP3 requirements.
6.How does Aetrix verify that CS5206-3GDP3 is sourced from the original manufacturer or authorized distributors?
All CS5206-3GDP3 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 CS5206-3GDP3 meets industry standards.
7.What is the process for return or replacement of CS5206-3GDP3?
All CS5206-3GDP3 units undergo pre-shipment inspection (PSI). If there is an issue with CS5206-3GDP3, 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 CS5206-3GDP3 part is unused and in its original packaging.
Return procedure for CS5206-3GDP3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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