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onsemi CS5201-1GT3
- Part No.:
- CS5201-1GT3
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
CS5201-1GT3.pdf
- Description:
- IC REG LINEAR POS ADJ 1A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,698
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Product details
Overview
CS5201-1GT3 from onsemi is a 1.0 A adjustable linear regulator with ±1.0% output voltage accuracy over temperature, 1.25 V to 5.5 V programmable output range using two external resistors, and 1.0 V typical dropout at full load-designed for post-regulation and microprocessor supply in low-voltage, high-transient-response systems.
For engineers reviewing the CS5201-1GT3 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage under 1.2 V at 1.0 A, thermal shutdown at 150–210°C, current limit of 1.1–3.1 A, ±1.0% output accuracy, and TO-220-3 package compatibility with LT1086 family devices.
Technical Context
The CS5201-1GT3 employs a composite PNP-NPN pass transistor architecture enabling fast transient response and stable operation with tantalum output capacitors (≥22 µF). Its error amplifier maintains a precise 1.254 V reference between VOUT and ADJ pins, with adjust pin current of 50–100 µA introducing minor output error.
Protection circuitry includes foldback current limiting (1.1 A min) and thermal shutdown with 25°C hysteresis, while line regulation is 0.02% typical and ripple rejection reaches 80 dB at 120 Hz-enabling robust performance in noisy input environments with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.0 A continuous-supports microprocessor core rails and FPGA I/O banks requiring stable high-current bias. |
| Output Voltage Range | 1.25 V to 5.5 V adjustable via resistor divider-enables flexible system-level voltage scaling without changing ICs. |
| Dropout Voltage | 1.0 V typical at 1.0 A-allows operation with only 1.0 V headroom, critical for low-VIN applications like battery-backed subsystems. |
| Output Accuracy | ±1.0% over −40°C to +70°C-ensures reliable logic-level compliance for 3.3 V, 2.5 V, and 1.8 V digital loads. |
| Reference Voltage | 1.254 V typical between VOUT and ADJ-defines precision of external resistor-based output setting with <0.1% drift over temp. |
| Ripple Rejection | 80 dB at 120 Hz-suppresses switching noise from upstream DC/DC converters feeding the linear regulator. |
| Thermal Shutdown | 150°C to 210°C activation range with 25°C hysteresis-prevents permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
CS5201-1GT3 is housed in a TO-220-3 package (Case 221A) with tab connected to VOUT for direct heatsink mounting and electrical connection to regulated output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj) | Adjust pin (low side of internal bandgap reference) | Sets output voltage via resistor divider; 50–100 µA current flows here-must be accounted for in precision designs. |
| 2 (VOUT) | Regulated output voltage terminal | Provides 1.0 A output; case/tab is electrically connected to this pin-requires isolation if heatsink is grounded. |
| 3 (VIN) | Input voltage terminal | Accepts up to 7.0 V input; differential VIN−VOUT must remain ≤7.0 V to avoid overstress failure. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Stabilizes within microseconds after load steps-critical for CPU burst-mode operation without undershoot. |
| Low dropout voltage | 1.0 V typical at 1.0 A enables use with 3.3 V input to generate 2.5 V or 1.8 V outputs where efficiency matters. |
| Integrated protection | Current limit (1.1–3.1 A) and thermal shutdown (150–210°C) eliminate need for external fault-handling circuitry. |
| Pb-free packaging | RoHS-compliant TO-220-3 construction supports lead-free reflow assembly and environmental compliance requirements. |
| Pin compatibility | Direct replacement for LT1086 family regulators-enables drop-in upgrade path with no PCB redesign. |
Applications
| Microprocessor Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Providing clean, low-noise 1.2 V or 1.8 V power to CPU cores during dynamic frequency scaling. IC Role / Device Role / Timing Role: Post-regulator delivering tightly regulated voltage with fast transient recovery to maintain logic integrity. Use Value: ±1.0% accuracy and 1.0 V dropout ensure stable operation even as input rail sags during high-current bursts. |
Use Scenario: Generating configurable 2.5 V or 3.3 V for FPGA I/O banks interfacing with multiple voltage-domain peripherals. IC Role / Device Role / Timing Role: Adjustable LDO supplying programmable interface voltage with minimal board space. Use Value: 1.25–5.5 V range and resistor-based setting allow single BOM item to support multiple I/O standards. |
| Industrial Sensor Signal Chain | Medical Diagnostic Module Power |
Use Scenario: Powering precision ADCs, op-amps, and analog front-ends in factory-floor sensor nodes. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupling switching noise from upstream DC/DC converters. Use Value: 80 dB ripple rejection at 120 Hz suppresses mains-borne interference critical for sub-LSB measurement accuracy. |
Use Scenario: Delivering stable 5.0 V or 3.3 V to embedded controllers and data acquisition circuits in portable diagnostic tools. IC Role / Device Role / Timing Role: Safety-margin power source with thermal shutdown preventing overheating in sealed enclosures. Use Value: 150–210°C thermal shutdown with 25°C hysteresis ensures graceful degradation rather than catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1086CT-3.3 | Fixed 3.3 V output; same TO-220-3 pinout and 1.5 A rating but no adjustability. | Only suitable where fixed 3.3 V is required-no resistor-programmable flexibility. | Select when output voltage is invariant and higher current margin (1.5 A vs. 1.0 A) is needed. |
| TLV1117-33CDCYR | 3.3 V fixed, SOT-223 package, 800 mA rating, 1.2 V dropout-lower current, smaller footprint, no adjust pin. | Not pin-compatible; requires PCB redesign and supports only fixed 3.3 V with reduced load capability. | Choose for space-constrained designs where 3.3 V is sufficient and 800 mA load ceiling is acceptable. |
Compared with LT1086CT-3.3 and TLV1117-33CDCYR, the CS5201-1GT3 uniquely combines 1.0 A adjustable output, TO-220-3 pin compatibility with LT1086, and ±1.0% accuracy-making it optimal for multi-voltage systems needing field-programmable rails without layout changes.
Availability
CS5201-1GT3 is available at Aetrix Electronics and suitable for microprocessor core supplies, FPGA I/O regulation, and industrial sensor signal chains requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CS5201-1GT3 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, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The CS5201-1GT3 belongs to onsemi's linear regulator product line, engineered for high-reliability post-regulation in systems demanding tight voltage tolerance, fast transient response, and integrated fault protection-particularly in computing and industrial control applications.
FAQ
What is the maximum input voltage for the CS5201-1GT3?
The CS5201-1GT3 has an absolute maximum supply voltage of 7.0 V. This is the maximum allowed difference between VIN and VOUT-not the absolute VIN level. For example, with a 5.0 V output, VIN must not exceed 12.0 V. Exceeding the 7.0 V differential risks permanent device damage, especially during short-circuit events.
Does the CS5201-1GT3 require an external capacitor for stability?
Yes, the CS5201-1GT3 requires an output capacitor for loop stability, with a minimum recommended value of 22 µF tantalum. Ceramic or film capacitors alone are not recommended due to near-zero ESR, which can cause oscillation. A parallel combination of tantalum and ceramic capacitors improves transient response while maintaining stability.
Is the CS5201-1GT3 pin-compatible with other regulator families?
Yes, the CS5201-1GT3 is explicitly pin-compatible with the LT1086 family of linear regulators in TO-220-3, D2PAK-3, and SOT-223 packages. This allows direct substitution without PCB modification, preserving existing layouts while upgrading to onsemi's ±1.0% accuracy and improved thermal shutdown behavior.
What is the purpose of the ADJ pin on the CS5201-1GT3?
The ADJ pin on the CS5201-1GT3 serves as the low-side connection of the internal 1.254 V bandgap reference. It enables adjustable output voltage via an external resistor divider between VOUT and ground. The ADJ pin draws 50–100 µA, which introduces a small error term in the output voltage equation and must be considered in precision applications.
How does thermal shutdown work on the CS5201-1GT3?
The CS5201-1GT3 features fully tested thermal shutdown that activates between 150°C and 210°C junction temperature, with 25°C hysteresis to prevent cycling. Once triggered, the output shuts off until junction temperature falls below the hysteresis threshold. This protects the device during sustained overload or inadequate heatsinking without requiring external monitoring circuitry.
CS5201-1GT3 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):
- 7V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 1V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 80dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
CS5201-1GT3 FAQ
1.How can I place an order for CS5201-1GT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS5201-1GT3 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 CS5201-1GT3 reliable?
The price and inventory of CS5201-1GT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS5201-1GT3 is usually 5 days.
3.What payment methods are accepted for CS5201-1GT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS5201-1GT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS5201-1GT3?
CS5201-1GT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS5201-1GT3 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 CS5201-1GT3?
For technical support, including CS5201-1GT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS5201-1GT3 requirements.
6.How does Aetrix verify that CS5201-1GT3 is sourced from the original manufacturer or authorized distributors?
All CS5201-1GT3 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 CS5201-1GT3 meets industry standards.
7.What is the process for return or replacement of CS5201-1GT3?
All CS5201-1GT3 units undergo pre-shipment inspection (PSI). If there is an issue with CS5201-1GT3, 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 CS5201-1GT3 part is unused and in its original packaging.
Return procedure for CS5201-1GT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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