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onsemi CAT6219VP5330GT4
- Part No.:
- CAT6219VP5330GT4
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
CAT6219VP5330GT4.pdf
- Description:
- IC REG LINEAR 3.3V 500MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,080
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Product details
Overview
CAT6219VP5330GT4 from onsemi is a fixed-output 3.3 V, 500 mA CMOS low-dropout (LDO) regulator in a 2 mm × 2 mm TDFN-6 package. It delivers ±1.0% initial output voltage accuracy, 300 mV typical dropout at full load, and operates from 2.3 V to 5.5 V input. Designed for battery-powered portable electronics, it features quick-start with optional 10 nF bypass capacitor for noise reduction and zero shutdown current.
For engineers reviewing the CAT6219VP5330GT4 datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3 V fixed output, thermal/overcurrent protection, ceramic-capacitor stability, low ground current (55 µA no-load), and compatibility with space-constrained PCB layouts requiring high PSRR and fast transient response.
Technical Context
The CAT6219VP5330GT4 implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor. Its enable input includes a built-in 2.5 MΩ pull-down resistor, ensuring default disable when floating. The BYP/ADJ pin supports either external bypass capacitor connection (for noise filtering and PSRR enhancement) or feedback divider (in adjustable variants), though this fixed 3.3 V version uses BYP functionality only.
Thermal protection activates at 160 °C with 10 °C hysteresis, and fold-back current limiting engages during short-circuit events. Under-voltage lockout disables regulation below 2.15 V typical input, preventing erratic behavior during brown-out conditions. Stable operation is achieved with ≥2.2 µF ceramic output capacitance and ESR ≤500 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.0% initial accuracy ensures precise rail generation for 3.3 V logic and analog circuitry. |
| Max Output Current | 500 mA continuous output supports moderate-power subsystems such as RF front-ends or sensor interfaces without thermal derating under typical board layout. |
| Dropout Voltage | 300 mV typical at 500 mA enables operation down to 3.6 V input while maintaining regulated 3.3 V output - critical for single-cell Li-ion or Li-poly systems. |
| Ground Current | 55 µA typical at no load minimizes quiescent power loss in always-on battery-backed circuits like real-time clocks or wake-up controllers. |
| PSRR | 64 dB at 1 kHz (with 10 nF BYP cap) suppresses switching noise from upstream DC-DC converters, improving signal integrity in mixed-signal applications. |
| Enable Threshold | Logic-high enable threshold of 1.6 V min over temperature guarantees reliable turn-on even with weak GPIO drivers or degraded supply rails. |
| Thermal Shutdown | 160 °C trip point with 10 °C hysteresis prevents permanent damage during sustained overload or poor heatsinking in compact enclosures. |
Pinout & Package
The CAT6219VP5330GT4 is housed in a thermally enhanced 6-pin TDFN package (2.0 mm × 2.0 mm, 0.75 mm height), with exposed thermal pad (TAB) that must be soldered to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply pin | Accepts 2.3–5.5 V input; requires ≥1 µF ceramic bypass capacitor near pin to suppress high-frequency noise and ensure stability. |
| GND | Ground reference | Primary return path for regulator current; must connect directly to low-impedance PCB ground plane, including thermal pad (TAB). |
| EN | Active-high enable control | Pulled down internally by 2.5 MΩ; drives high (>1.6 V) to activate regulator; open-circuit defaults to OFF state. |
| VOUT | Regulated output | Delivers stable 3.3 V; requires ≥2.2 µF ceramic output capacitor with ESR ≤500 mΩ placed adjacent to pin for transient response and stability. |
| BYP/ADJ | Bypass capacitor terminal | Connects optional 10 nF capacitor to GND to reduce output noise and improve PSRR above 10 kHz - not used for feedback in fixed-output variant. |
| NC | No-connect terminal | Internally unconnected; must remain unconnected on PCB to avoid parasitic coupling or unintended biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Quick-start bypass architecture | Enables 150 µs turn-on time with 10 nF BYP cap - preserves fast power sequencing without compromising output noise performance. |
| Ceramic-capacitor stability | Stable with ≥2.2 µF X5R/X7R ceramic output caps - eliminates need for costly tantalum or aluminum electrolytics and reduces board area. |
| Zero shutdown current | 1 µA max shutdown ground current extends battery life in standby modes where regulator is disabled between active cycles. |
| Fold-back current limit | Reduces short-circuit current to ~200 mA during fault, lowering power dissipation and enabling safe auto-recovery after fault removal. |
| Under-voltage lockout (UVLO) | Disables output below 2.15 V typical VIN - prevents unstable regulation and false system resets during battery discharge or cold-start conditions. |
Applications
| Smartphone Power Management | Wearable Sensor Hub |
|---|---|
Use Scenario: Regulating clean 3.3 V supply for baseband processor I/O, camera interface, and touch controller in ultra-thin smartphone designs. IC Role / Device Role / Timing Role: Primary post-regulator delivering low-noise, tightly regulated 3.3 V rail with fast load transient response to handle burst-mode communication. Use Value: 300 mV dropout allows operation across full Li-ion voltage range (4.2 V → 3.3 V), while 64 dB PSRR isolates sensitive analog blocks from noisy PMIC switching noise. | Use Scenario: Powering MEMS accelerometers, optical heart-rate sensors, and BLE radio in coin-cell–powered fitness trackers. IC Role / Device Role / Timing Role: Always-on LDO supplying constant 3.3 V to low-power peripherals during sleep and active states, controlled via host MCU GPIO. Use Value: 55 µA no-load ground current minimizes quiescent drain, extending coin-cell life beyond 6 months; UVLO prevents erratic sensor readings during battery depletion. |
| Industrial Handheld Terminal | IoT Edge Node Controller |
Use Scenario: Providing robust 3.3 V rail for ARM Cortex-M microcontroller, LCD driver, and barcode scanner ASIC in ruggedized field devices. IC Role / Device Role / Timing Role: Main system LDO with thermal and current protection, operating across −40 °C to +85 °C ambient with minimal derating. Use Value: 160 °C thermal shutdown and fold-back current limit protect against sustained overloads in sealed enclosures with limited airflow - reducing field failure risk. | Use Scenario: Supplying 3.3 V to LoRaWAN transceiver, environmental sensor array, and secure element in battery-operated smart meter nodes. IC Role / Device Role / Timing Role: High-PSRR LDO decoupling RF and digital sections to maintain link budget and data integrity in noisy industrial environments. Use Value: 10 nF BYP capacitor improves PSRR by >10 dB above 20 kHz, suppressing interference from switching regulators powering other subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 250 mA max output, 6 µA quiescent current, SOT-23-3 package; lacks BYP pin and thermal shutdown. | Suitable for ultra-low-IQ applications with light loads (<200 mA); not recommended for high-current or thermally constrained designs. | Select if IQ <10 µA is mandatory and peak load ≤250 mA; verify thermal margin independently. |
| TPL7407LDR | 500 mA output, 1.2 V to 5.5 V input, 125 µA IQ, WSON-8 package; includes integrated 7-channel NPN driver but no BYP function. | Targeted at LED/display driver integration; higher ground current and no noise-reduction bypass capability. | Choose only when discrete transistor driving is required alongside regulation; otherwise, CAT6219VP5330GT4 offers superior noise performance and lower IQ. |
Compared with MCP1700T-3302E/MB and TPL7407LDR, the CAT6219VP5330GT4 uniquely combines 500 mA capability, 10 nF-bypass–enabled PSRR optimization, and zero-shutdown current - making it optimal for noise-sensitive, medium-current portable systems where thermal safety and long battery life are jointly critical.
Availability
CAT6219VP5330GT4 is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, and industrial handheld terminals requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for CAT6219VP5330GT4 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The CAT6219 series belongs to onsemi's precision LDO portfolio, engineered specifically for battery-powered portable electronics demanding tight voltage accuracy, low quiescent current, and robust protection features in miniature packages.
FAQ
What is the output voltage tolerance of the CAT6219VP5330GT4 over temperature?
The CAT6219VP5330GT4 maintains ±2.0% output voltage accuracy across the full junction temperature range of −40 °C to +125 °C. This specification applies to all fixed-output versions with VOUT ≥ 2.0 V, including the 3.3 V CAT6219VP5330GT4. Initial room-temperature accuracy is tighter at ±1.0%, verified during production test.
Does the CAT6219VP5330GT4 require an external bypass capacitor for stable operation?
No - the CAT6219VP5330GT4 is stable with only a 2.2 µF ceramic output capacitor and does not require the 10 nF bypass capacitor for basic operation. However, adding the 10 nF capacitor between BYP and GND significantly improves PSRR above 10 kHz and reduces output noise, which is strongly recommended for noise-sensitive analog or RF applications using the CAT6219VP5330GT4.
What is the thermal resistance (θJA) of the CAT6219VP5330GT4 in its TDFN-6 package?
The CAT6219VP5330GT4 in the 2 mm × 2 mm TDFN-6 package has a junction-to-ambient thermal resistance (θJA) of 206 °C/W under standard JEDEC test conditions (1-layer 1-in² copper pad). Actual θJA will improve with proper PCB layout - especially when the exposed thermal pad (TAB) is fully soldered to a multi-layer ground plane.
Can the CAT6219VP5330GT4 be used with input voltages below 2.3 V?
No - the CAT6219VP5330GT4 is specified for input voltages from 2.3 V to 5.5 V. Below 2.3 V, the internal under-voltage lockout (UVLO) circuit disables the output at approximately 2.15 V, and regulation cannot be guaranteed. Attempting operation below 2.3 V may result in unregulated output or oscillation; the CAT6219VP5330GT4 must be powered within its rated input range for reliable performance.
Is the NC pin on the CAT6219VP5330GT4 electrically connected internally?
No - the NC (No Connect) pin on the CAT6219VP5330GT4 is not bonded or connected to any internal circuitry. It must remain unconnected on the PCB layout. Soldering or routing to this pin may introduce parasitic coupling or mechanical stress, potentially degrading thermal performance or reliability of the CAT6219VP5330GT4.
CAT6219VP5330GT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- 64dB ~ 54dB (1kHz ~ 20kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (2x2)
CAT6219VP5330GT4 FAQ
1.How can I place an order for CAT6219VP5330GT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT6219VP5330GT4 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 CAT6219VP5330GT4 reliable?
The price and inventory of CAT6219VP5330GT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT6219VP5330GT4 is usually 5 days.
3.What payment methods are accepted for CAT6219VP5330GT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT6219VP5330GT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT6219VP5330GT4?
CAT6219VP5330GT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT6219VP5330GT4 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 CAT6219VP5330GT4?
For technical support, including CAT6219VP5330GT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT6219VP5330GT4 requirements.
6.How does Aetrix verify that CAT6219VP5330GT4 is sourced from the original manufacturer or authorized distributors?
All CAT6219VP5330GT4 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 CAT6219VP5330GT4 meets industry standards.
7.What is the process for return or replacement of CAT6219VP5330GT4?
All CAT6219VP5330GT4 units undergo pre-shipment inspection (PSI). If there is an issue with CAT6219VP5330GT4, 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 CAT6219VP5330GT4 part is unused and in its original packaging.
Return procedure for CAT6219VP5330GT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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