My Inquiry
My Account
onsemi CS5204-3GDPR3
- Part No.:
- CS5204-3GDPR3
- Manufacturer:
- onsemi
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
CS5204-3GDPR3.pdf
- Description:
- IC REG LINEAR 3.3V 4A D2PAK-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,449
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CS5204-3GDPR3 from onsemi is a 4.0 A, 3.3 V fixed-output linear regulator in D2PAK-3 package with ±2.0% output accuracy, 1.1 V dropout at full load, thermal shutdown, overcurrent protection, and SOA limiting-designed for microprocessor core supplies and post-regulation in industrial power systems.
For engineers reviewing the CS5204-3GDPR3 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, package-specific terminal mapping, real-world use cases, and validated alternative parts for stable high-current low-dropout DC/DC regulation.
Technical Context
The CS5204-3GDPR3 integrates a composite PNP-NPN pass transistor with internal bandgap reference, error amplifier, and current-limit circuitry. Its SOA protection dynamically reduces maximum output current as VIN–VOUT increases, ensuring safe operation across varying input differentials.
It operates with a fixed 3.3 V output trimmed to ±2.0%, requires no external feedback resistors, and achieves 75 dB ripple rejection at 120 Hz. Quiescent current remains ≤10 mA at full 4.0 A load, supporting efficient thermal management in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% - tightly regulated rail for 3.3 V logic and I/O domains. |
| Max Output Current | 4.0 A continuous - supports high-power microprocessors and FPGAs without external current boosting. |
| Dropout Voltage | 1.1 V @ 4.0 A - enables operation with only 4.4 V input for 3.3 V output, minimizing power loss. |
| Thermal Shutdown | 150 °C activation - protects against sustained overload or inadequate heatsinking in enclosed environments. |
| Ripple Rejection | 75 dB @ 120 Hz - suppresses AC line noise and switching supply coupling into sensitive analog/digital circuits. |
| Quiescent Current | ≤10 mA @ 4.0 A - maintains efficiency during full-load operation without excessive bias consumption. |
| Load Regulation | 0.4% max (10 mA to 4.0 A) - ensures stable voltage under dynamic CPU load transitions. |
| Operating Temp Range | −40 °C to +70 °C ambient - qualified for industrial temperature-grade embedded control and automation systems. |
Pinout & Package
D2PAK-3 surface-mount package with exposed tab electrically connected to VOUT for low-impedance thermal and power path; TO-220-3 variant uses same pinout but through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal error amplifier and protection circuitry; must be low-impedance connection to system ground plane. |
| 2 | VOUT | Regulated 3.3 V output; tab is electrically tied to this pin-requires thermal pad soldering to PCB copper for heat dissipation. |
| 3 | VIN | Input supply (up to 17 V); must be decoupled with ≥10 µF tantalum capacitor close to pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| SOA Protection | Reduces available output current as VIN–VOUT rises-prevents thermal runaway during wide-input-differential conditions. |
| Fast Transient Response | Stabilizes within microseconds after step-load changes-critical for CPU core voltage tracking during burst-mode execution. |
| Low Dropout Architecture | 1.1 V dropout at 4.0 A enables use with 5 V intermediate bus rails while delivering clean 3.3 V output. |
| Integrated Fault Protection | Combines thermal shutdown, overcurrent limit, and SOA monitoring-eliminates need for external protection ICs or discrete sensing. |
| Fixed 3.3 V Output | No external resistors required-reduces BOM count, layout area, and calibration uncertainty versus adjustable regulators. |
Applications
| Industrial PLC Power Supply | Embedded Microprocessor Core Rail |
|---|---|
|
Use Scenario: Powering ARM Cortex-A series processors in programmable logic controllers with variable ambient temperatures and high EMI environments. IC Role / Device Role / Timing Role: Primary 3.3 V core regulator delivering stable voltage under rapid load transients from instruction fetch and cache activity. Use Value: 75 dB ripple rejection and fast transient response maintain processor clock integrity and prevent reset events during motor drive switching noise. |
Use Scenario: Providing main I/O voltage for FPGA configuration and peripheral interface in edge AI gateways. IC Role / Device Role / Timing Role: Fixed-output LDO supplying 3.3 V to LVCMOS I/O banks with tight regulation tolerance and low noise floor. Use Value: ±2.0% output accuracy and 0.4% load regulation ensure signal integrity across 32-bit parallel buses operating up to 100 MHz. |
| Medical Diagnostic Imaging Module | Automated Test Equipment (ATE) Fixture |
|
Use Scenario: Regulating power for CCD/CMOS sensor interface circuitry in portable ultrasound units where thermal headroom is constrained. IC Role / Device Role / Timing Role: Low-noise post-regulator converting 5 V intermediate rail to clean 3.3 V for analog front-end amplifiers and ADC drivers. Use Value: 0.003% RMS output noise and 1.1 V dropout minimize thermal stress and preserve SNR in 16-bit image data paths. |
Use Scenario: Supplying consistent 3.3 V to DUT interface circuitry in automated board-level test fixtures with frequent power cycling. IC Role / Device Role / Timing Role: High-reliability fixed LDO handling repetitive 0–4 A load steps during functional test sequences. Use Value: SOA protection and thermal hysteresis (25 °C) prevent latch-up during repeated short-duration overloads typical of fixture contact bounce. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1529CT-3.3#PBF | 3.3 V fixed, 3 A max, 0.6 V dropout @ 3 A, 70 dB ripple rejection, higher cost, SO-8 package | Limited to 3 A; unsuitable for >3.5 A loads; requires external compensation capacitor | Select when lower dropout and smaller footprint are prioritized over current capability and integrated protection. |
| TPS7A8300RGRT | 3.3 V fixed, 2 A max, 0.25 V dropout @ 2 A, 45 dB ripple rejection, QFN-20 package, PMOS architecture | Half the current rating; lacks SOA protection; optimized for ultra-low-noise RF subsystems, not high-current digital loads | Choose only for space-constrained, low-noise analog rails-not as a direct replacement for CS5204-3GDPR3's 4 A capability. |
Compared with LT1529CT-3.3#PBF and TPS7A8300RGRT, the CS5204-3GDPR3 uniquely delivers 4.0 A continuous current with integrated SOA, thermal, and overcurrent protection in a thermally robust D2PAK-3 package-making it the only option among the three qualified for sustained high-power industrial microprocessor applications without derating or external fault management.
Availability
CS5204-3GDPR3 is available at Aetrix Electronics and suitable for industrial PLC power supplies, embedded microprocessor core rails, medical imaging modules, and automated test equipment requiring stable component supply, long-term lifecycle support, and tape-and-reel delivery for SMT production.
Supply support for CS5204-3GDPR3 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, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The CS5204-3GDPR3 belongs to the CS5204-x family of high-current linear regulators engineered specifically for post-regulation in microprocessor and FPGA power systems where low dropout, fast transient response, and robust fault protection are mandatory.
FAQ
What is the maximum input voltage rating for the CS5204-3GDPR3?
The CS5204-3GDPR3 has an absolute maximum supply voltage 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 remain ≤15 V under worst-case transient conditions, as specified in the Electrical Characteristics table.
Does the CS5204-3GDPR3 require an external output capacitor, and what type is recommended?
Yes, the CS5204-3GDPR3 requires an external output capacitor for loop stability and transient response. A minimum 22 µF tantalum capacitor is recommended; aluminum electrolytic types are acceptable but exhibit greater ESR variation at low temperatures. Ceramic capacitors alone are not advised due to near-zero ESR causing potential instability.
Is the thermal pad (tab) of the CS5204-3GDPR3 electrically isolated from other pins?
No-the tab of the CS5204-3GDPR3 in D2PAK-3 package is internally connected to the VOUT pin. It must be soldered to a dedicated PCB copper pour tied to the 3.3 V output net for both thermal conduction and electrical continuity. Insulating the tab violates the device's thermal and electrical design and will cause overheating or malfunction.
How does SOA protection function in the CS5204-3GDPR3 during high VIN–VOUT conditions?
In the CS5204-3GDPR3, SOA protection reduces the maximum allowable output current as the input-to-output differential voltage increases. This prevents the pass transistor from exceeding its safe operating area by dynamically limiting current before junction temperature or power dissipation reaches destructive levels-enabling robust operation even with wide input ranges like 12 V → 3.3 V.
Can the CS5204-3GDPR3 be used without a heatsink in a 4.0 A application?
No-operating the CS5204-3GDPR3 at 4.0 A without a heatsink exceeds its thermal limits. With RJA ≈ 50 °C/W (D2PAK-3 on standard FR4), even at 25 °C ambient, junction temperature would exceed 150 °C. A properly sized heatsink with thermal compound and low-RCS interface is mandatory for full-load operation per the Thermal Management guidelines in the datasheet.
CS5204-3GDPR3 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):
- 17V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 4A
- Current - Output:
- 4A
- 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
CS5204-3GDPR3 FAQ
1.How can I place an order for CS5204-3GDPR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS5204-3GDPR3 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 CS5204-3GDPR3 reliable?
The price and inventory of CS5204-3GDPR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS5204-3GDPR3 is usually 5 days.
3.What payment methods are accepted for CS5204-3GDPR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS5204-3GDPR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS5204-3GDPR3?
CS5204-3GDPR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS5204-3GDPR3 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 CS5204-3GDPR3?
For technical support, including CS5204-3GDPR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS5204-3GDPR3 requirements.
6.How does Aetrix verify that CS5204-3GDPR3 is sourced from the original manufacturer or authorized distributors?
All CS5204-3GDPR3 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 CS5204-3GDPR3 meets industry standards.
7.What is the process for return or replacement of CS5204-3GDPR3?
All CS5204-3GDPR3 units undergo pre-shipment inspection (PSI). If there is an issue with CS5204-3GDPR3, 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 CS5204-3GDPR3 part is unused and in its original packaging.
Return procedure for CS5204-3GDPR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CS5204-3GDPR3 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
