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onsemi CS52015-3GDPR3
- Part No.:
- CS52015-3GDPR3
- Manufacturer:
- onsemi
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
CS52015-3GDPR3.pdf
- Description:
- IC REG LINEAR 3.3V 1.5A D2PAK-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,572
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Product details
Overview
CS52015-3GDPR3 from onsemi is a 1.5 A, 3.3 V fixed-output linear regulator in D2PAK-3 package, featuring ±1.5% output voltage accuracy over temperature, 1.05 V typical dropout at 1.5 A, and integrated current limit and thermal shutdown protection. It serves as a post-regulator or microprocessor supply where low-voltage operation and fast transient response are critical.
For engineers reviewing the CS52015-3GDPR3 datasheet, pinout, applications, or equivalent options, key selection considerations include dropout voltage under full load, thermal regulation performance, ripple rejection at 120 Hz, quiescent current at full load, and compatibility with tantalum output capacitors for stability.
Technical Context
The CS52015-3GDPR3 employs a composite PNP-NPN output transistor architecture optimized for low-dropout operation and fast transient response. Its error amplifier drives the pass element with feedback from a precision bandgap reference, enabling tight line and load regulation (0.20% max line, 0.4% max load).
Thermal shutdown activates at 150–210°C with 25°C hysteresis, and current limiting engages at 1.6–3.1 A depending on input-output differential. The device requires a minimum 22 µF tantalum output capacitor for stability and exhibits 80 dB ripple rejection at 120 Hz with 1.0 VPP input ripple.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.30 V ±1.5% - ensures stable 3.3 V rail for microprocessors and logic with guaranteed tolerance across −40°C to +70°C ambient. |
| Max Output Current | 1.5 A continuous - supports high-current digital loads such as FPGA core supplies or SoC subsystems without derating at 25°C case temp. |
| Dropout Voltage | 1.05 V typical @ 1.5 A - enables operation from 4.35 V input while maintaining regulation, critical for battery-backed or low-headroom systems. |
| Quiescent Current | 10 mA max @ full load - minimizes no-load power loss in always-on subsystems while preserving regulation integrity. |
| Ripple Rejection | 80 dB @ 120 Hz - suppresses switching noise from upstream DC/DC converters, protecting sensitive analog or clock circuitry. |
| Thermal Shutdown | 150°C activation threshold - provides fail-safe protection during sustained overload or inadequate heatsinking, with 25°C hysteresis to prevent cycling. |
| Line Regulation | 0.20% max - limits output variation to ±6.6 mV over 2.0–3.7 V input-output differential, ensuring consistent voltage under varying input conditions. |
Pinout & Package
D2PAK-3 package (Case 418AB), surface-mount, with exposed tab electrically connected to VOUT for thermal conduction and low-impedance output return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bias and feedback network; must be low-impedance connection to system ground plane. |
| 2 | VOUT | Regulated 3.3 V output; tab is internally bonded to this pin, requiring thermal pad soldering to PCB copper for heat dissipation. |
| 3 | VIN | Unregulated input supply; must be decoupled with ≥10 µF tantalum capacitor close to pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Fast Transient Response | Sub-10 mV output deviation under 1.5 A load step - maintains microprocessor core voltage within spec during burst-mode execution. |
| Low Dropout Architecture | 1.05 V typical dropout @ 1.5 A - enables use with 5 V input rails while delivering full current, reducing power loss vs. legacy regulators. |
| Integrated Protection | Current limit + thermal shutdown - eliminates need for external fault management circuitry in space-constrained embedded designs. |
| Stable with Tantalum Capacitors | Validated with 22 µF tantalum COUT - avoids ceramic capacitor instability issues, simplifying BOM and layout for industrial applications. |
Applications
| Microprocessor Core Supply | FPGA I/O Bank Regulator |
|---|---|
Use Scenario: Powering ARM Cortex-A series processors in industrial gateways requiring clean, regulated 3.3 V at up to 1.5 A peak current. IC Role / Device Role / Timing Role: Primary post-regulator converting 5 V intermediate rail to stable 3.3 V core voltage with fast transient recovery. Use Value: 80 dB ripple rejection prevents switching noise from upstream DC/DC from corrupting processor timing margins or causing reset events. | Use Scenario: Supplying configurable I/O banks on Xilinx Artix-7 FPGAs in test equipment where voltage accuracy directly impacts signal integrity. IC Role / Device Role / Timing Role: Fixed-output LDO providing precise 3.3 V to FPGA I/O pins with ±1.5% tolerance over temperature. Use Value: ±1.5% output accuracy ensures compatible logic-level signaling across −40°C to +70°C operating range without calibration. |
| Industrial PLC Digital I/O Module | Medical Diagnostic Sensor Interface |
Use Scenario: Regulating power for isolated digital output drivers in programmable logic controllers subject to wide ambient temperature swings. IC Role / Device Role / Timing Role: Load-regulated 3.3 V source for optocoupler drivers and level translators in DIN-rail mounted modules. Use Value: 0.4% max load regulation guarantees consistent driver performance across 10 mA–1.5 A output current range, preventing false triggering. | Use Scenario: Powering low-noise analog front-end ICs in portable ultrasound sensor modules where EMI immunity is critical. IC Role / Device Role / Timing Role: Low-ripple, thermally protected 3.3 V supply for ADC reference buffers and op-amp signal chains. Use Value: 1.05 V dropout allows operation from 4.35 V battery-derived input, extending runtime while maintaining 80 dB AC noise suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1086CT-3.3 | Higher 1.3 V typical dropout at 1.5 A; 10 mA quiescent current; same TO-220/D2PAK pinout but not identical thermal characteristics. | Designed for general-purpose lab power; less optimized for high-transient embedded loads. | Select LT1086CT-3.3 only if legacy design reuse or vendor consolidation outweighs 0.25 V dropout penalty. |
| TPS7A4701RGWR | Lower 0.3 V dropout at 1 A; 1 mA quiescent current; requires ceramic output capacitors; different SOT-223-5 pinout. | Targeted at ultra-low-noise audio and precision analog; lacks thermal hysteresis and current limit thresholds specified for CS52015-3GDPR3. | Choose TPS7A4701RGWR for noise-sensitive analog rails, not for high-current digital loads requiring robust thermal protection. |
Compared with LT1086CT-3.3 and TPS7A4701RGWR, the CS52015-3GDPR3 delivers superior thermal shutdown hysteresis (25°C) and proven stability with tantalum capacitors-critical for industrial control systems where capacitor aging and temperature drift affect long-term reliability.
Availability
CS52015-3GDPR3 is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic interfaces, FPGA-based test equipment, and microprocessor-based edge gateways requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for CS52015-3GDPR3 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, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The CS52015-3GDPR3 belongs to onsemi's high-current linear regulator product line, engineered specifically for post-regulation in microprocessor and FPGA power systems where low dropout, fast transient response, and integrated fault protection are mandatory.
FAQ
What is the maximum input voltage rating for the CS52015-3GDPR3?
The CS52015-3GDPR3 has an absolute maximum supply voltage (VIN) of 7.0 V. Operation above this value risks permanent damage due to junction breakdown. For reliable 3.3 V output at 1.5 A, the recommended input range is 4.35 V to 7.0 V to maintain dropout margin and thermal safety.
Does the CS52015-3GDPR3 require an external output capacitor, and what type is recommended?
Yes, the CS52015-3GDPR3 requires an external output capacitor for loop stability. A 22 µF tantalum capacitor is the validated minimum; aluminum electrolytic types are acceptable but exhibit greater ESR variation at low temperatures. Ceramic capacitors are not recommended due to near-zero ESR, which can cause oscillation in the CS52015-3GDPR3 control loop.
Is the CS52015-3GDPR3 pin-compatible with other regulators in its family?
The CS52015-3GDPR3 is pin-compatible with the LT1086 family in D2PAK-3 and TO-220-3 packages, sharing identical 1-GND / 2-VOUT / 3-VIN pin assignments. However, differences in thermal resistance (RJA) and dropout behavior mean thermal design must be re-validated when substituting into existing LT1086 layouts.
What protection features are integrated into the CS52015-3GDPR3?
The CS52015-3GDPR3 integrates two primary protection features: current limiting (1.6–3.1 A trip range depending on VIN−VOUT) and thermal shutdown (150–210°C activation with 25°C hysteresis). Both are 100% functionally tested in production, eliminating need for external fault monitoring circuitry in most embedded applications.
Can the CS52015-3GDPR3 be used without a heatsink in a 1.5 A application?
No. At 1.5 A with a 4.35 V input (1.05 V dropout), power dissipation is ~1.6 W. With D2PAK-3 RJA ranging from 10–50°C/W depending on PCB copper area, junction temperature will exceed 150°C without a heatsink or substantial copper pour. Thermal compound and a heatsink are required for continuous 1.5 A operation per onsemi's thermal management guidelines.
CS52015-3GDPR3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 7V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (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
CS52015-3GDPR3 FAQ
1.How can I place an order for CS52015-3GDPR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS52015-3GDPR3 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 CS52015-3GDPR3 reliable?
The price and inventory of CS52015-3GDPR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS52015-3GDPR3 is usually 5 days.
3.What payment methods are accepted for CS52015-3GDPR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS52015-3GDPR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS52015-3GDPR3?
CS52015-3GDPR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS52015-3GDPR3 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 CS52015-3GDPR3?
For technical support, including CS52015-3GDPR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS52015-3GDPR3 requirements.
6.How does Aetrix verify that CS52015-3GDPR3 is sourced from the original manufacturer or authorized distributors?
All CS52015-3GDPR3 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 CS52015-3GDPR3 meets industry standards.
7.What is the process for return or replacement of CS52015-3GDPR3?
All CS52015-3GDPR3 units undergo pre-shipment inspection (PSI). If there is an issue with CS52015-3GDPR3, 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 CS52015-3GDPR3 part is unused and in its original packaging.
Return procedure for CS52015-3GDPR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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