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Microchip Technology MIC5252-2.8BML-TR
- Part No.:
- MIC5252-2.8BML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-VDFN Exposed Pad, 6-MLF®
- Datasheet:
-
MIC5252-2.8BML-TR.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 6MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,624
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Product details
Overview
MIC5252-2.8BML-TR from Micrel is a 2.8V, 150mA ultra-low-noise CMOS LDO voltage regulator in a 6-pin 2mm × 2mm MLF™ package, featuring 1% initial output accuracy, 135mV dropout at 150mA, and 30µV(rms) output noise - optimized for RF power stages and battery-powered wireless receivers.
For engineers reviewing the MIC5252-2.8BML-TR datasheet, MIC5252-2.8BML-TR pinout, MIC5252-2.8BML-TR application, or MIC5252-2.8BML-TR equivalent, key selection criteria include low-noise performance under ceramic-capacitor biasing, TTL-compatible enable control with near-zero shutdown current, and thermal robustness in compact handheld PCB layouts.
Technical Context
The MIC5252-2.8BML-TR integrates a precision bandgap reference with active noise cancellation circuitry and a quick-start bypass clamp to maintain low-noise regulation while enabling fast turn-on even with 0.01µF–1µF CBYP capacitors. Its CMOS pass element delivers high PSRR (48dB @ 10kHz) across 2.7V–6.0V input range.
It implements active shutdown via an internal N-channel MOSFET clamp that discharges the output capacitor during disable, ensuring load de-energization. Thermal shutdown triggers at 150°C with 10°C hysteresis, and current limit protects up to 425mA short-circuit peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8V ±1% initial accuracy - ensures stable core/bias rail for RF ICs without post-regulation trimming. |
| Dropout Voltage | 135mV @ 150mA - enables operation from single-cell Li-ion (3.0V min) down to 2.935V input while sustaining full load. |
| Output Noise | 30µV(rms), 10Hz–100kHz - meets stringent spectral purity requirements for VCO/PLL supply rails. |
| PSRR | 48dB @ 10kHz, VIN = VOUT + 0.3V - suppresses switching noise from adjacent DC/DC converters in mixed-signal systems. |
| Quiescent Current | 90µA typical - extends battery life in always-on sensor nodes and standby modes of portable devices. |
| Enable Threshold | VIH = 1.6V, VIL = 0.4V - compatible with 1.8V/2.5V/3.3V logic families without level-shifting. |
| Thermal Resistance | θJA = 90°C/W (MLF™) - supports 150mA continuous output at TA ≤ 80°C with minimal copper area. |
Pinout & Package
Package: 6-pin 2mm × 2mm MLF™ (exposed pad GND), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable/Shutdown Input | CMOS-compatible active-high control; must be driven - floating state causes indeterminate output. |
| 2 - GND | Ground Reference | Primary signal ground; internally connected to exposed thermal pad - requires external solder connection. |
| 3 - IN | Supply Input | Input rail (2.7V–6.0V); requires ≥1µF low-ESR ceramic bypass to GND for stability. |
| 4 - OUT | Regulated Output | 2.8V output; stable with ≥1µF X7R/X5R ceramic capacitor; max ESR = 300mΩ. |
| 5 - NC | No Internal Connection | Unbonded die pad - must remain unconnected on PCB; no routing or stitching. |
| 6 - BYP | Noise Bypass Terminal | Connects to internal reference; 0.01µF–1µF capacitor to GND reduces output noise and improves PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30µV(rms) output noise enables clean supply for VCOs, LNAs, and ADC reference buffers. |
| Active shutdown discharge | Integrated N-MOSFET clamp rapidly discharges OUT capacitor when EN = low - prevents residual load bias. |
| Ceramic capacitor compatibility | Stable with 1µF X7R/X5R ceramics (ESR ≤ 300mΩ) - eliminates bulk tantalum, saves board space. |
| TTL-level enable interface | VIH = 1.6V allows direct drive from 1.8V/2.5V/3.3V microcontrollers - no external pull-up or level shifter needed. |
| Zero-off-mode current | IGND ≤ 1µA in shutdown - critical for multi-year battery life in IoT endpoint sleep states. |
Applications
| Cellular Front-End Power | Bluetooth Audio Module Supply |
|---|---|
Use Scenario: Powering RF transceiver PA bias and LNA stages in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Low-noise 2.8V bias rail generator with fast enable/disable for TDD burst timing. Use Value: 30µV(rms) noise prevents reciprocal mixing degradation; 135mV dropout maximizes battery runtime per transmit cycle. |
Use Scenario: Supplying DAC, codec, and Class-D amplifier in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary analog rail regulator with logic-controlled shutdown during audio pause. Use Value: 90µA quiescent current extends playback time; active clamp prevents pop/click on resume. |
| Medical Wearable Sensor Node | Industrial Wireless Transmitter |
Use Scenario: Providing stable 2.8V reference for ultra-low-power ECG/PPG analog front-end. IC Role / Device Role / Timing Role: Always-on precision regulator for sensor biasing during deep-sleep monitoring cycles. Use Value: No-load stability maintains regulation without dummy load; 1% accuracy ensures consistent ADC gain calibration. |
Use Scenario: Powering sub-GHz RF SoC (e.g., TI CC1310) in battery-operated condition monitoring sensors. IC Role / Device Role / Timing Role: Main system voltage regulator with enable synchronized to LoRaWAN transmit windows. Use Value: 48dB PSRR at 10kHz rejects noise from RF power amplifier switching; MLF™ package fits 8mm × 8mm modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1702T-2802E/MB | 2.8V, 250mA, 600mV dropout @ 250mA, 40µV(rms) noise, SOT-23-5 | Higher dropout limits use below 3.4V input; larger package footprint | Prefer when higher output current is required and input headroom > 0.6V is available. |
| TCS2117-2800MV | 2.8V, 150mA, 200mV dropout @ 150mA, 25µV(rms) noise, DFN-6 | Slightly lower noise but higher dropout; no dedicated BYP pin | Choose when absolute minimum noise is prioritized over adjustable bypass optimization. |
Compared with MIC5252-2.8BML-TR, MCP1702T-2802E/MB offers higher current but sacrifices dropout and board-area efficiency, while TCS2117-2800MV trades away the flexible noise-bypass architecture for marginal noise reduction - making MIC5252-2.8BML-TR optimal for RF-sensitive designs requiring both ultra-low noise and dynamic enable control.
Availability
MIC5252-2.8BML-TR is available at Aetrix Electronics and suitable for cellular front-end power, Bluetooth audio modules, medical wearable sensor nodes, industrial wireless transmitters, and other applications requiring stable component supply with tight parametric consistency and long-lifecycle support.
Supply support for MIC5252-2.8BML-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5252 product line was designed specifically for ultra-low-noise, low-dropout regulation in battery-powered RF and portable electronics - emphasizing ceramic-capacitor compatibility, logic-enable control, and thermal efficiency in miniature packages.
FAQ
What is the maximum input voltage rating for MIC5252-2.8BML-TR?
The MIC5252-2.8BML-TR has an absolute maximum input voltage of +7V, but its operational input range is specified from +2.7V to +6.0V. Exceeding 6.0V may cause functional instability or accelerated aging, even if within absolute maximum ratings. For reliable 2.8V output regulation at 150mA, the recommended maximum input is 4.9V at 50°C ambient using the MLF™ package's θJA of 90°C/W.
Does MIC5252-2.8BML-TR require an external bypass capacitor on the BYP pin?
Yes, MIC5252-2.8BML-TR requires an external capacitor (0.01µF to 1.0µF) connected between the BYP pin and GND to achieve its specified 30µV(rms) output noise. Omitting this capacitor increases output noise significantly and reduces PSRR above 100Hz. A 0.01µF C0G/NPO capacitor is recommended for RF-critical applications where phase noise matters most.
Can MIC5252-2.8BML-TR operate without any load connected to the OUT pin?
Yes, MIC5252-2.8BML-TR remains stable and in regulation with zero load - a feature explicitly verified in the datasheet and critical for applications like CMOS RAM keep-alive circuits or sensor biasing during deep-sleep modes. Unlike many older LDOs, it does not require a minimum load resistor to maintain loop stability.
What is the thermal shutdown behavior of MIC5252-2.8BML-TR?
MIC5252-2.8BML-TR activates thermal shutdown at 150°C junction temperature and remains latched off until junction temperature falls by 10°C (hysteresis). During shutdown, the EN pin retains control - asserting EN = low forces immediate shutdown regardless of temperature, while EN = high allows automatic recovery once cooled. The exposed pad must be soldered to PCB ground for effective heat transfer.
Is MIC5252-2.8BML-TR pin-compatible with other variants in the MIC5252 family?
Yes, all MIC5252-x.xBML variants share identical 6-pin MLF™ pinout and footprint, including MIC5252-2.8BML-TR. Voltage-setting is internal and non-adjustable, so swapping between 2.5V, 2.8V, 3.0V, or 4.75V BML versions requires only a bill-of-materials change - no PCB redesign or layout modification is needed.
MIC5252-2.8BML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad, 6-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 200 µA
- PSRR:
- 63dB ~ 48dB (10Hz ~ 10kHz)
- 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-DFN (2x2)
MIC5252-2.8BML-TR FAQ
1.How can I place an order for MIC5252-2.8BML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5252-2.8BML-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 MIC5252-2.8BML-TR reliable?
The price and inventory of MIC5252-2.8BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5252-2.8BML-TR is usually 5 days.
3.What payment methods are accepted for MIC5252-2.8BML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5252-2.8BML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5252-2.8BML-TR?
MIC5252-2.8BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5252-2.8BML-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 MIC5252-2.8BML-TR?
For technical support, including MIC5252-2.8BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5252-2.8BML-TR requirements.
6.How does Aetrix verify that MIC5252-2.8BML-TR is sourced from the original manufacturer or authorized distributors?
All MIC5252-2.8BML-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 MIC5252-2.8BML-TR meets industry standards.
7.What is the process for return or replacement of MIC5252-2.8BML-TR?
All MIC5252-2.8BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5252-2.8BML-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 MIC5252-2.8BML-TR part is unused and in its original packaging.
Return procedure for MIC5252-2.8BML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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