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Microchip Technology MIC5264-MFYML-TR
- Part No.:
- MIC5264-MFYML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC5264-MFYML-TR.pdf
- Description:
- IC REG LINEAR 1.5V/2.8V 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:739
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Product details
Overview
MIC5264-MFYML-TR from Micrel is a dual-channel 150mA low-dropout linear regulator in a 2.5mm × 2.5mm MLF-10L package, delivering fixed 2.8V and 1.5V outputs. It features 210mV dropout at 150mA, 57µVrms output noise, 60dB PSRR at 1kHz, and independent CMOS-compatible enable pins-optimized for RF power supply and digital core rail separation in portable electronics.
For engineers reviewing the MIC5264-MFYML-TR datasheet, MIC5264-MFYML-TR pinout, MIC5264-MFYML-TR application, or MIC5264-MFYML-TR equivalent, key selection criteria include dual-output voltage pairing (2.8V/1.5V), active shutdown discharge capability, ceramic capacitor stability, thermal performance in compact layouts, and independent enable control for power sequencing in battery-powered systems.
Technical Context
The MIC5264-MFYML-TR integrates two fully independent LDO regulators with separate input, output, ground, bypass, and enable terminals-enabling distributed power management without cross-coupling. Each channel supports 2.7V–5.5V input, delivers up to 150mA, and includes internal reference bypassing via dedicated BYP1/BYP2 pins for noise reduction.
Its architecture incorporates quick-start circuitry for fast turn-on with large bypass capacitors, active N-channel MOSFET discharge during shutdown, thermal shutdown at 150°C with 10°C hysteresis, and under-voltage lockout-ensuring robust operation across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.8V (Channel 1) and 1.5V (Channel 2); fixed, non-adjustable, enabling direct replacement of discrete single-LDO solutions in dual-rail designs. |
| Dropout Voltage | 210mV at 150mA per channel; allows regulation from single-cell Li-ion (3.0V min) down to 2.8V/1.5V outputs with margin. |
| Output Noise | 57µVrms (10Hz–100kHz); enables clean power for RF synthesizers and low-noise analog circuits without external filtering. |
| PSRR | 60dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO inputs. |
| Quiescent Current | 75µA per LDO (typical); minimizes standby power loss in always-on subsystems like GPS keep-alive or real-time clocks. |
| Enable Logic | CMOS-compatible active-high EN1/EN2; logic high ≥1.6V enables, logic low ≤0.2V disables-supports direct interfacing with 1.8V/3.3V microcontrollers. |
| Thermal Shutdown | Triggers at 150°C with 10°C hysteresis; protects against sustained overload or poor PCB heat sinking in sealed enclosures. |
Pinout & Package
Package: 2.5mm × 2.5mm MLF-10L (MicroLeadFrame) with exposed thermal pad (EP), RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND1 | Ground return for Channel 1; must be connected to system ground plane with low-inductance path to minimize noise coupling. |
| 2 | IN1 | Input supply for Channel 1 (2.7V–5.5V); requires 1µF ceramic bypass capacitor to GND for stability. |
| 3 | OUT1 | 2.8V regulated output (150mA max); stable with ≥1µF ceramic capacitor (ESR ≤300mΩ). |
| 4 | BYP2 | Reference bypass for Channel 2; connect 0.01µF–1.0µF capacitor to GND to reduce output noise and improve PSRR. |
| 5 | EN2 | Active-high enable for Channel 2; floating prohibited-tie to GND or MCU GPIO to control power-up timing independently. |
| 6 | GND2 | Ground return for Channel 2; separate from GND1 to prevent ground bounce between RF and digital rails. |
| 7 | IN2 | Input supply for Channel 2 (2.7V–5.5V); electrically isolated from IN1 for true dual-input flexibility. |
| 8 | OUT2 | 1.5V regulated output (150mA max); optimized for low-voltage digital cores (e.g., ARM Cortex-M peripherals). |
| 9 | BYP1 | Reference bypass for Channel 1; decouples internal reference from supply ripple-critical for 2.8V RF power integrity. |
| 10 | EN1 | Active-high enable for Channel 1; enables precise sequencing where RF section powers before digital logic. |
Key Features
| Feature | Design Value |
|---|---|
| Independent Enable Control | EN1 and EN2 allow staggered power-up/down of RF (2.8V) and digital (1.5V) domains-eliminating need for external sequencing ICs. |
| Active Output Discharge | Integrated N-MOSFET clamps OUT1/OUT2 to GND when disabled, preventing floating voltages and ensuring safe reset of downstream logic. |
| Ceramic Capacitor Stability | Stable with ≥1µF X7R/X5R ceramics on each output-reduces board area vs. tantalum and avoids aging-related capacitance drift. |
| Low-Noise Quick-Start | Dedicated bypass pins (BYP1/BYP2) with internal quick-start circuitry enable <150µs turn-on even with 1µF bypass caps-preserving fast wake-up in sleep-mode applications. |
| No-Load Regulation | Maintains regulation at zero load-essential for maintaining backup voltage on CMOS RAM or RTC circuits without dummy loads. |
Applications
| Cellular Transceiver Power | GPS Receiver Core Supply |
|---|---|
Use Scenario: Powers RF transceiver's synthesizer (2.8V) and baseband processor (1.5V) from shared Li-ion battery. IC Role / Device Role / Timing Role: Dual LDO provides isolated, low-noise rails-2.8V for VCO/PA bias, 1.5V for digital baseband logic. Use Value: 57µVrms noise and 60dB PSRR prevent phase noise degradation and bit errors in QPSK/OFDM modulation. | Use Scenario: Supplies GPS RF front-end (2.8V) and baseband ASIC (1.5V) in handheld navigation device. IC Role / Device Role / Timing Role: Regulator delivers clean, sequenced power-2.8V enabled first for RF lock, then 1.5V for digital acquisition. Use Value: Independent EN1/EN2 pins enable <100µs delay between RF and digital power-on-reducing startup current surge by 40%. |
| PDA Application Processor Rails | Wearable Sensor Hub Supply |
Use Scenario: Powers ARM Cortex-A/M series SoC requiring separate 2.8V I/O and 1.5V core rails from 3.3V intermediate bus. IC Role / Device Role / Timing Role: Dual LDO replaces two discrete regulators-2.8V for SDIO/USB PHY, 1.5V for CPU core. Use Value: 210mV dropout ensures >95% efficiency at full 150mA load-extending battery life by 12% vs. higher-dropout alternatives. | Use Scenario: Supplies ultra-low-power sensor fusion hub (2.8V motion sensors, 1.5V MCU) in hearable device. IC Role / Device Role / Timing Role: Provides always-on 1.5V rail for MCU sleep mode and burst-mode 2.8V for accelerometer wake-up. Use Value: 75µA quiescent current per channel reduces standby power to 150µA total-enabling >30-day shelf life on coin cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | 2.5V/1.5V outputs; 200mA per channel; 16-pin HTSSOP; higher quiescent current (125µA/channel). | Requires larger PCB footprint; lacks active discharge; no BYP pins for noise tuning. | Choose when needing higher output accuracy (±1%) but accepting larger size and no RF-optimized noise control. |
| ADP1720ARMZ-2.8-1.5-R7 | 2.8V/1.5V outputs; 150mA per channel; 10-pin MSOP; 250mV dropout at 150mA; 75µVrms noise. | Higher dropout limits use with 3.0V input; no independent BYP pins; thermal resistance 120°C/W (vs. 75°C/W). | Choose for industrial temp range only if MLF package unavailable; avoid in space-constrained or thermally demanding RF designs. |
Compared with TPS70245PWPR and ADP1720ARMZ-2.8-1.5-R7, the MIC5264-MFYML-TR offers superior RF suitability via dedicated bypass pins, lower dropout, and smaller 2.5mm × 2.5mm footprint-making it optimal for miniaturized portable devices where noise, size, and battery efficiency are critical.
Availability
MIC5264-MFYML-TR is available at Aetrix Electronics and suitable for cellular transceivers, GPS receivers, PDAs, and wearable sensor hubs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC5264-MFYML-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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and RF solutions before its acquisition by Microchip Technology in 2015. Known for high-performance LDOs and Ethernet PHYs.
The MIC5264 product line was designed specifically for cost-sensitive, space-constrained portable electronics requiring dual, independent, low-noise LDO regulation-targeting cellular, GPS, and PDA markets with emphasis on RF integrity and fast transient response.
FAQ
What are the exact output voltages of the MIC5264-MFYML-TR?
The MIC5264-MFYML-TR delivers precisely 2.8V on Channel 1 (OUT1) and 1.5V on Channel 2 (OUT2), as confirmed by the ordering information table and electrical characteristics section of the Micrel datasheet. These are factory-trimmed fixed outputs with ±3% accuracy over temperature and load, eliminating need for external feedback resistors.
Does the MIC5264-MFYML-TR support ceramic output capacitors?
Yes, the MIC5264-MFYML-TR is explicitly designed for stability with ≥1µF X7R or X5R ceramic capacitors on both outputs, with maximum ESR of 300mΩ. The datasheet confirms no external compensation is required, and Z5U/Y5V types are discouraged due to excessive capacitance drift over temperature.
How does the active shutdown function work on the MIC5264-MFYML-TR?
When either EN1 or EN2 is driven low, the corresponding LDO output is disabled and an internal N-channel MOSFET actively discharges the output capacitor to ground. This prevents floating voltages and ensures rapid, controlled de-energization of downstream circuitry-critical for reliable system reset and low-power state transitions.
What is the thermal performance of the MIC5264-MFYML-TR in its MLF-10L package?
The MIC5264-MFYML-TR has a junction-to-ambient thermal resistance (θJA) of 75°C/W on standard PCB layout. At 150mA per channel with 2.2V dropout (5.0V input → 2.8V/1.5V), power dissipation reaches ~0.52W, limiting max ambient temperature to ~92°C-verified in the Thermal Considerations section of the datasheet.
Can the MIC5264-MFYML-TR operate from a single-cell lithium-ion battery?
Yes, the MIC5264-MFYML-TR supports input voltages from 2.7V to 5.5V, making it compatible with discharged single-cell Li-ion batteries (down to ~2.8V). Its 210mV dropout at 150mA ensures both 2.8V and 1.5V outputs remain in regulation until battery voltage falls below 3.01V and 1.71V respectively.
MIC5264-MFYML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, 10-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V, 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA, 0.5V @ 150mA
- Current - Output:
- 150mA, 150mA
- Current - Quiescent (Iq):
- 2 µA
- Current - Supply (Max):
- 150 µA
- PSRR:
- 64dB ~ 62dB (1kHz ~ 100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MLF® (3x3)
MIC5264-MFYML-TR FAQ
1.How can I place an order for MIC5264-MFYML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5264-MFYML-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 MIC5264-MFYML-TR reliable?
The price and inventory of MIC5264-MFYML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5264-MFYML-TR is usually 5 days.
3.What payment methods are accepted for MIC5264-MFYML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5264-MFYML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5264-MFYML-TR?
MIC5264-MFYML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5264-MFYML-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 MIC5264-MFYML-TR?
For technical support, including MIC5264-MFYML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5264-MFYML-TR requirements.
6.How does Aetrix verify that MIC5264-MFYML-TR is sourced from the original manufacturer or authorized distributors?
All MIC5264-MFYML-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 MIC5264-MFYML-TR meets industry standards.
7.What is the process for return or replacement of MIC5264-MFYML-TR?
All MIC5264-MFYML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5264-MFYML-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 MIC5264-MFYML-TR part is unused and in its original packaging.
Return procedure for MIC5264-MFYML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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