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onsemi CAT6219-285MV2T3
- Part No.:
- CAT6219-285MV2T3
- Manufacturer:
- onsemi
- Package:
- 6-WFDFN
- Datasheet:
-
CAT6219-285MV2T3.pdf
- Description:
- IC REG LINEAR 2.85V 500MA 6WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,170
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Product details
Overview
CAT6219-285MV2T3 from onsemi is a fixed-output 2.85 V, 500 mA CMOS low-dropout (LDO) regulator in a 1.5 mm × 1.5 mm WDFN-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 zero shutdown current, 55 µA typical no-load ground current, and integrated thermal protection.
For engineers reviewing the CAT6219-285MV2T3 datasheet, pinout, applications, or equivalent options, key selection considerations include its 2.85 V fixed output, WDFN-6 footprint compatibility, fast 150 µs turn-on time with external 10 nF bypass capacitor, and stable operation with only a 2.2 µF ceramic output capacitor.
Technical Context
The CAT6219-285MV2T3 implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor - enabling high PSRR (64 dB at 1 kHz with 10 nF BYP capacitor) and fast transient response. Its enable input includes a built-in 2.5 MΩ pull-down resistor, ensuring default-off behavior when left floating.
It integrates under-voltage lockout (UVLO) triggering at 2.15 V typical, fold-back current limiting, and thermal shutdown at 160 °C with 10 °C hysteresis. The BYP/ADJ pin supports optional noise reduction via 10 nF capacitor, while the fixed-output variant uses internal resistor divider - eliminating external feedback components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1.0% initial accuracy - ensures precise rail generation for 2.8 V–2.9 V logic or analog subsystems. |
| Max Output Current | 500 mA guaranteed peak - supports moderate-power microcontrollers, sensors, or RF modules without derating. |
| Dropout Voltage | 300 mV typical at 500 mA - enables regulation from 3.15 V input, extending battery runtime in single-cell Li-ion or multi-cell alkaline systems. |
| Ground Current | 55 µA typical at no load - minimizes quiescent power loss during sleep modes in portable devices. |
| PSRR | 64 dB at 1 kHz (with 10 nF BYP cap) - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Turn-On Time | 150 µs with 10 nF BYP capacitor - enables rapid power sequencing in wake-up events without compromising noise performance. |
| Operating Input Range | 2.3 V to 5.5 V - compatible with Li-ion (2.7–4.2 V), Li-Po, and regulated 3.3 V/5 V supply rails. |
Pinout & Package
The CAT6219-285MV2T3 is housed in a 6-pad, 1.5 mm × 1.5 mm, 0.5 mm pitch WDFN package (Case 511BJ), with exposed thermal pad connected to GND for enhanced thermal dissipation. Package height is ≤1.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.3–5.5 V; requires local 1 µF ceramic bypass capacitor to minimize input impedance and prevent instability. |
| GND | Ground reference | Primary return path; must be connected to PCB ground plane; ties to exposed thermal pad for thermal management. |
| EN | Enable control (active-high) | Pulled down internally by 2.5 MΩ; drives output ON when ≥1.6 V (over temp); open-circuit defaults to OFF state. |
| VOUT | Regulated output | Delivers stable 2.85 V; requires 2.2 µF ceramic capacitor (min) placed adjacent to pin for stability and transient response. |
| BYP | Bypass reference node | Connects optional 10 nF capacitor to GND to reduce output noise and improve PSRR above 10 kHz. |
| NC | No-connect terminal | Not internally bonded; must remain unconnected per datasheet - no routing or soldering allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Quick-start with BYP capacitor | Enables simultaneous low-noise operation and sub-200 µs turn-on - eliminates trade-off between speed and ripple in always-on subsystems. |
| Stable with small ceramic capacitor | Guaranteed stability using only 2.2 µF X5R/X7R ceramic output cap - reduces board area and BOM cost vs. tantalum or larger ceramics. |
| Zero shutdown current | 1 µA max shutdown ground current - preserves battery charge during extended standby in IoT edge nodes or wearables. |
| Integrated UVLO | Disables output below 2.15 V typical - prevents brown-out operation and erratic behavior in fading battery conditions. |
| Fold-back current limit | Reduces short-circuit current to ~200 mA - limits power dissipation and avoids thermal runaway during fault conditions. |
Applications
| Smartphone Baseband Power | Wireless Headset Audio Codec |
|---|---|
Use Scenario: Powers baseband processor core voltage rail in compact smartphones where space and efficiency are critical. IC Role / Device Role / Timing Role: Primary 2.85 V LDO supplying digital baseband IC requiring tight voltage tolerance and low noise. Use Value: ±1.0% accuracy and 64 dB PSRR ensure clean power delivery, preventing bit errors and RF desense during cellular transmission bursts. | Use Scenario: Supplies audio codec and Bluetooth radio in true wireless stereo (TWS) earbuds with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable 2.85 V to analog front-end and digital logic blocks. Use Value: 55 µA no-load ground current extends playback time; 150 µs turn-on enables instant wake-from-sleep audio streaming. |
| Portable Medical Sensor Hub | Industrial Handheld Scanner |
Use Scenario: Powers precision analog sensor signal chain (ADC, op-amps) in battery-operated patient monitoring devices. IC Role / Device Role / Timing Role: Low-noise, low-drift LDO providing reference-clean 2.85 V for signal conditioning circuitry. Use Value: 45 µVRMS output noise (10 Hz–100 kHz) and <40 ppm/°C tempco preserve measurement integrity across operating temperature range. | Use Scenario: Supplies barcode imager ASIC and MCU in rugged handheld scanners used in warehouse logistics. IC Role / Device Role / Timing Role: Robust 500 mA LDO handling pulsed loads during image capture and wireless upload cycles. Use Value: Thermal shutdown + fold-back current limit protect against overheating during repeated high-current imaging bursts in hot ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-285TOE/TO | 300 mA max output, 6 µA quiescent current, SOT-23-3 package - lower current, smaller footprint, higher PSRR (70 dB @ 1 kHz). | Suitable for ultra-low-power sensor nodes but insufficient for 500 mA peak loads like imaging or radio transmit. | Select when load current ≤300 mA and minimal quiescent current dominates design priority over output capability. |
| Torex XC6219B285MR-G | Same 500 mA rating and 2.85 V fixed output; 250 mV dropout at 500 mA; WLP-6 package (1.2 × 1.2 mm) - slightly lower dropout, smaller size, no BYP pin. | Lacks external bypass capacitor option - trades off noise performance for minimal footprint in space-constrained designs. | Choose when board area is critical and PSRR >60 dB is not required; verify thermal performance under sustained 500 mA load in WLP package. |
Compared with MCP1700-285TOE/TO and XC6219B285MR-G, the CAT6219-285MV2T3 uniquely balances 500 mA drive capability, 10 nF-bypassable low noise, and WDFN thermal performance - making it optimal for mid-power portable systems needing both headroom and clean power.
Availability
CAT6219-285MV2T3 is available at Aetrix Electronics and suitable for smartphone power management, wireless audio peripherals, and portable medical instrumentation requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for CAT6219-285MV2T3 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 high accuracy, low quiescent current, and robust fault protection in miniature packages.
FAQ
What is the maximum input voltage rating for CAT6219-285MV2T3?
The absolute maximum input voltage (VIN) for CAT6219-285MV2T3 is 6.5 V. However, the recommended operating range is strictly 2.3 V to 5.5 V. Exceeding 5.5 V may cause permanent damage or accelerated degradation, even if within the absolute maximum rating - always operate within the recommended range for reliability and warranty compliance. The CAT6219-285MV2T3 is not rated for 6 V system rails.
Does CAT6219-285MV2T3 require an external bypass capacitor to function?
No, CAT6219-285MV2T3 operates fully functional without an external bypass capacitor on the BYP pin. The 10 nF capacitor is optional and used solely to reduce output noise and improve PSRR above 10 kHz. Omitting it does not affect regulation, stability, or basic functionality - the CAT6219-285MV2T3 delivers its specified 2.85 V output and 500 mA capability with only VIN, GND, EN, and VOUT connections.
What is the thermal resistance (θJA) of CAT6219-285MV2T3 in its WDFN-6 package?
The junction-to-ambient thermal resistance (θJA) for CAT6219-285MV2T3 in the WDFN-6 (1.5 mm × 1.5 mm) package is 206 °C/W, as specified in Table 3 of the datasheet. This value assumes standard JEDEC 2-layer board layout with 1 in² copper pour connected to the exposed thermal pad. Actual θJA will vary with PCB layout, copper area, and airflow - proper thermal pad soldering and grounding are essential to achieve this rating.
Can CAT6219-285MV2T3 be used with a 2.2 µF output capacitor of any dielectric type?
CAT6219-285MV2T3 is characterized and guaranteed stable with X5R or X7R ceramic capacitors of 2.2 µF minimum value. Other dielectrics - including Y5V, Z5U, or tantalum - are not validated and may cause oscillation or poor transient response due to ESR and capacitance variation over voltage/temperature. Always use X5R/X7R ceramics with ≤500 mΩ ESR, as specified in the datasheet, to ensure reliable operation of CAT6219-285MV2T3.
Is the NC pin on CAT6219-285MV2T3 electrically isolated or should it be grounded?
According to the official CAT6219 datasheet, the NC (No Connect) pin on CAT6219-285MV2T3 is not internally bonded and must remain unconnected - neither grounded nor routed. Soldering or connecting this pin risks internal shorting or unpredictable behavior. The WDFN-6 pinout explicitly defines Pin 3 as NC; leaving it floating is mandatory for correct CAT6219-285MV2T3 operation and long-term reliability.
CAT6219-285MV2T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WFDFN
- 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):
- 2.85V
- 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-WDFN (1.5x1.5)
CAT6219-285MV2T3 FAQ
1.How can I place an order for CAT6219-285MV2T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT6219-285MV2T3 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 CAT6219-285MV2T3 reliable?
The price and inventory of CAT6219-285MV2T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT6219-285MV2T3 is usually 5 days.
3.What payment methods are accepted for CAT6219-285MV2T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT6219-285MV2T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT6219-285MV2T3?
CAT6219-285MV2T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT6219-285MV2T3 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 CAT6219-285MV2T3?
For technical support, including CAT6219-285MV2T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT6219-285MV2T3 requirements.
6.How does Aetrix verify that CAT6219-285MV2T3 is sourced from the original manufacturer or authorized distributors?
All CAT6219-285MV2T3 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 CAT6219-285MV2T3 meets industry standards.
7.What is the process for return or replacement of CAT6219-285MV2T3?
All CAT6219-285MV2T3 units undergo pre-shipment inspection (PSI). If there is an issue with CAT6219-285MV2T3, 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 CAT6219-285MV2T3 part is unused and in its original packaging.
Return procedure for CAT6219-285MV2T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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