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Microchip Technology MIC5219-2.85YM5-TR
- Part No.:
- MIC5219-2.85YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5219-2.85YM5-TR.pdf
- Description:
- IC REG LIN 2.85V 500MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
MIC5219-2.85YM5-TR from Microchip Technology is a fixed-output 2.85 V, 500 mA peak low-dropout linear regulator in SOT-23-5 package, featuring 500 mV max dropout at full load, ±1% output voltage accuracy, and ultra-low noise (300 nV/√Hz with 470 pF BYP capacitor). It serves as a post-regulator in battery-powered portable electronics requiring stable low-noise supply.
For engineers reviewing the MIC5219-2.85YM5-TR datasheet, MIC5219-2.85YM5-TR pinout, MIC5219-2.85YM5-TR application, or MIC5219-2.85YM5-TR equivalent, key selection considerations include dropout performance at 500 mA, enable/shutdown control compatibility with CMOS/TTL logic, thermal limits in SOT-23-5 layout, and ultra-low noise operation enabled by optional 470 pF bypass capacitor on BYP pin.
Technical Context
The MIC5219-2.85YM5-TR implements a bandgap-referenced LDO architecture with internal current limiting and thermal shutdown. Its BYP pin connects directly to the reference node, enabling noise reduction via external 470 pF capacitor - a feature confirmed for all fixed-voltage SOT-23-5 variants including this part.
Enable control is CMOS/TTL-compatible with logic-high threshold ≥2.0 V and near-zero shutdown current (<0.1 μA at VEN ≤ 0.18 V). Dropout voltage is specified at 350–500 mV over 150–500 mA load range, and ground current rises from 80 μA (light load) to 12 mA (500 mA), confirming its design for high peak-current start-up conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1% - ensures stable rail for 2.8–3.0 V logic or RF biasing without external feedback. |
| Max Dropout Voltage | 500 mV at 500 mA - enables operation with only 3.35 V input for full-load 2.85 V output. |
| Output Noise | 300 nV/√Hz with 470 pF BYP cap - reduces switching noise coupling into sensitive analog/RF circuits. |
| Enable Threshold | VENH ≥ 2.0 V, VENL ≤ 0.18 V - compatible with 3.3 V and 2.5 V logic families without level shifting. |
| Ground Current | 12 mA at 500 mA load - determines total input power draw and impacts thermal budget in compact layouts. |
| Thermal Resistance | θJA = 220°C/W (min footprint) - defines maximum continuous current under ambient temperature constraints. |
| Operating Temp | –40°C to +125°C - supports industrial and extended-temperature portable applications. |
Pinout & Package
SOT-23-5 package: 2.9 mm × 1.6 mm × 1.1 mm body, gull-wing leads, JEDEC standard outline, Pb-free matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | CMOS/TTL-compatible control: high ≥2.0 V enables regulation; low ≤0.18 V shuts down with <0.1 μA quiescent current. |
| 2 (GND) | Ground reference | Primary return path for load, ground current, and BYP capacitor; must be low-impedance connection. |
| 3 (IN) | Input supply | Accepts 2.5 V to 12 V input; requires ≥1 μF ceramic capacitor if >10" wire length or battery source. |
| 4 (BYP) | Reference bypass | Connects to internal bandgap reference; 470 pF to GND reduces output noise to 300 nV/√Hz. |
| 5 (OUT) | Regulated output | Delivers up to 500 mA peak; requires ≥2.2 μF output capacitor when BYP is used for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Reversed-battery protection | Prevents damage during incorrect polarity connection - critical for handheld device serviceability. |
| Ultra-low noise with BYP pin | 300 nV/√Hz output noise achievable using 470 pF capacitor - enables clean supply for ADCs, PLLs, and RF front-ends. |
| 500 mA peak output capability | Supports high inrush currents during processor boot or peripheral initialization in space-constrained SOT-23-5 footprint. |
| Tight line/load regulation | 0.05%/V line regulation and 0.5% load regulation - maintains voltage stability across input and load transients. |
| Near-zero shutdown current | <0.1 μA at VEN ≤ 0.18 V - extends battery life in always-on standby modes of portable systems. |
Applications
| Mobile Device Power Management | Low-Noise RF Bias Supply |
|---|---|
Use Scenario: Regulating VCC for Bluetooth/Wi-Fi SoCs in smartphones and wearables during cold-start and burst transmission. IC Role / Device Role / Timing Role: Post-regulator supplying clean 2.85 V to RF transceivers and baseband processors. Use Value: 500 mA peak current handles radio transmit surge; 300 nV/√Hz noise prevents EVM degradation in 2.4 GHz ISM band. | Use Scenario: Providing stable bias to LNA and mixer stages in GPS/GNSS receivers. IC Role / Device Role / Timing Role: Ultra-low-noise local supply for analog front-end signal chain. Use Value: Fixed 2.85 V output matches typical LNA VDD requirements; BYP-enabled noise floor avoids reciprocal mixing. |
| PC Card VCC Regulation | SMPS Post-Regulation |
Use Scenario: Generating compliant 3.3 V or 2.85 V VCC for PCMCIA/ExpressCard peripherals in laptops. IC Role / Device Role / Timing Role: Standalone fixed-voltage regulator with enable control for hot-plug sequencing. Use Value: CMOS/TTL-compatible EN pin allows host-controlled power-up; reversed-battery protection guards against insertion errors. | Use Scenario: Tightening ripple and noise on buck converter output for FPGA I/O banks or DDR memory termination. IC Role / Device Role / Timing Role: Linear post-regulator improving PSRR and transient response beyond switcher capability. Use Value: 75 dB PSRR at 120 Hz suppresses low-frequency switching artifacts; 500 mV dropout enables use after 3.3 V buck stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2802E/TO | 280 mV typical dropout at 250 mA; 250 mA continuous rating; TO-92 package; no BYP pin. | Limited to lower current and higher-noise applications; lacks ultra-low-noise mode. | Select when cost-sensitive, low-current, through-hole assembly is required and noise <500 nV/√Hz is acceptable. |
| TPS7A20285PDQNR | 260 mV max dropout at 300 mA; 300 mA continuous; DQN (X2SON-4) package; 12 μA quiescent current. | Lower IQ but no enable or BYP; smaller footprint but no noise optimization path. | Select for ultra-low-IQ battery applications where enable control and noise suppression are secondary to standby current. |
Compared with MCP1700-2802E/TO and TPS7A20285PDQNR, the MIC5219-2.85YM5-TR uniquely combines 500 mA peak delivery in SOT-23-5, enable functionality, and designable ultra-low noise via BYP - making it optimal for portable RF and high-transient digital loads where both surge capability and spectral purity matter.
Availability
MIC5219-2.85YM5-TR is available at Aetrix Electronics and suitable for mobile device power management, low-noise RF bias supply, and SMPS post-regulation requiring stable component supply across production lifecycles.
Supply support for MIC5219-2.85YM5-TR 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
Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, and power management ICs, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The MIC5219 product line delivers high-peak-current, ultra-low-noise LDO regulators optimized for battery-powered portable electronics, PC card regulation, and noise-sensitive analog subsystems.
FAQ
What is the maximum input voltage for MIC5219-2.85YM5-TR?
The MIC5219-2.85YM5-TR supports an absolute maximum input voltage of +20 V, but its recommended operating input range is +2.5 V to +12 V. Exceeding +12 V risks exceeding safe power dissipation limits in the SOT-23-5 package, especially at high output currents. For reliable operation at 500 mA, VIN should remain within 3.35–6.2 V depending on PCB thermal design.
Does MIC5219-2.85YM5-TR require an external bypass capacitor?
The MIC5219-2.85YM5-TR does not require an external bypass capacitor for basic operation, but connecting a 470 pF capacitor from BYP to GND reduces output noise from 500 nV/√Hz to 300 nV/√Hz. When used, the output capacitor must be increased to ≥2.2 μF to maintain stability, per Microchip's Figure 4-6 and Section 4.5.
What is the function of the BYP pin on MIC5219-2.85YM5-TR?
The BYP pin on MIC5219-2.85YM5-TR connects directly to the internal bandgap voltage reference. Adding a 470 pF capacitor from BYP to GND filters reference noise, lowering output noise to 300 nV/√Hz. This pin is exclusive to fixed-output variants like MIC5219-2.85YM5-TR and is not present on adjustable versions.
Can MIC5219-2.85YM5-TR be used without the enable (EN) pin connected?
Yes - MIC5219-2.85YM5-TR operates continuously when EN is left open or tied to IN. The EN pin defaults to active-high; an open or high state enables regulation. However, tying EN to IN forfeits shutdown control and increases quiescent current during system sleep, so dedicated logic control is preferred for battery-critical designs.
What thermal derating applies to MIC5219-2.85YM5-TR in SOT-23-5?
In minimum-footprint SOT-23-5 layout, MIC5219-2.85YM5-TR has θJA = 220°C/W. At 25°C ambient, maximum power dissipation is 455 mW. With 2.85 V output and 500 mA load, input must stay ≤6.2 V to avoid thermal shutdown - verified via Equation 4-6 in DS20006021A. Larger copper area reduces θJA and increases safe operating current.
MIC5219-2.85YM5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 8 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5219-2.85YM5-TR FAQ
1.How can I place an order for MIC5219-2.85YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5219-2.85YM5-TR 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 MIC5219-2.85YM5-TR reliable?
The price and inventory of MIC5219-2.85YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5219-2.85YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5219-2.85YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5219-2.85YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5219-2.85YM5-TR?
MIC5219-2.85YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5219-2.85YM5-TR 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 MIC5219-2.85YM5-TR?
For technical support, including MIC5219-2.85YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5219-2.85YM5-TR requirements.
6.How does Aetrix verify that MIC5219-2.85YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5219-2.85YM5-TR 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 MIC5219-2.85YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5219-2.85YM5-TR?
All MIC5219-2.85YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5219-2.85YM5-TR, 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 MIC5219-2.85YM5-TR part is unused and in its original packaging.
Return procedure for MIC5219-2.85YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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