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Microchip Technology MIC5252-3.0YM5-TR
- Part No.:
- MIC5252-3.0YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5252-3.0YM5-TR.pdf
- Description:
- IC REG LINEAR 3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
MIC5252-3.0YM5-TR from Micrel is a 3.0V fixed-output, 150mA ultra-low-noise CMOS LDO voltage regulator in SOT-23-5 package, featuring 1% initial accuracy, 135mV dropout at 150mA, and 30µV(rms) output noise - optimized for RF power stages and battery-powered handheld devices requiring clean, stable bias.
For engineers reviewing the MIC5252-3.0YM5-TR datasheet, MIC5252-3.0YM5-TR pinout, MIC5252-3.0YM5-TR application, or MIC5252-3.0YM5-TR equivalent, key selection criteria include low-noise performance with bypass capacitor support, TTL-compatible enable control, ceramic-capacitor stability, and thermal shutdown protection in compact footprint.
Technical Context
The MIC5252-3.0YM5-TR integrates a precision bandgap reference, error amplifier, and active-clamp shutdown circuit to deliver fast transient response and zero-off-mode current. Its architecture supports simultaneous high PSRR (50dB @ 10kHz) and ultra-low noise via dedicated BYP pin for external 0.01µF–1.0µF reference bypassing.
It operates across 2.7V–6.0V input range with CMOS-compatible enable logic (VIH = 1.6V, VIL = 0.4V), internal current limit (250–425mA), and thermal shutdown at 150°C with 10°C hysteresis - all while maintaining regulation down to 0mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% initial accuracy ensures precise biasing for 3.0V logic rails and RF ICs without external feedback. |
| Dropout Voltage | 135mV at 150mA enables operation from single-cell Li-ion (3.0V min) or dual-cell alkaline (3.0V under load) without headroom loss. |
| Output Noise | 30µV(rms), 10Hz–100kHz, with 0.01µF BYP capacitor - meets stringent RF front-end noise floor requirements. |
| PSRR | 50dB at 10kHz with VIN = VOUT + 0.3V - suppresses switching noise from DC/DC converters feeding the LDO input. |
| Quiescent Current | 90µA typical at 100µA load - extends battery life in always-on sensor nodes and standby circuits. |
| Enable Threshold | VIH = 1.6V, VIL = 0.4V - compatible with 1.8V/3.3V GPIOs without level-shifting in portable systems. |
| Thermal Protection | 150°C shutdown with 10°C hysteresis prevents latch-up during sustained overload or poor PCB thermal layout. |
Pinout & Package
SOT-23-5 (M5) package: 2.9mm × 1.6mm × 1.1mm body, exposed pad not connected (NC), RoHS-compliant lead-free finish per MIC5252-3.0YM5-TR marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Input | Accepts 2.7V–6.0V unregulated input; requires ≥1µF ceramic bypass to GND for stability and noise rejection. |
| 2 (GND) | Ground Reference | Primary return path for load, ground current (90–200µA), and BYP capacitor; must be low-impedance connection. |
| 3 (EN) | Enable/Shutdown Input | TTL-compatible digital control: high ≥1.6V enables output; low ≤0.4V disables regulator and reduces IQ to <1µA. |
| 4 (BYP) | Noise Bypass Terminal | Connects to internal reference node; 0.01µF ceramic to GND reduces output noise by >50% and improves PSRR above 1kHz. |
| 5 (OUT) | Regulated Output | Delivers 3.0V ±1% to load up to 150mA; requires ≥1µF low-ESR ceramic capacitor (X7R/X5R) for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30µV(rms) output noise with 0.01µF BYP capacitor - enables direct powering of VCOs, LNAs, and PLLs without additional filtering. |
| Active shutdown clamp | Internal N-MOSFET discharges OUT capacitor when EN = low - prevents floating rail and ensures safe load de-energization. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output caps (ESR ≤300mΩ); eliminates need for larger, higher-ESR tantalum or electrolytic capacitors. |
| No-load regulation | Maintains 3.0V output with 0mA load - supports CMOS RAM keep-alive, real-time clock backup, and always-on monitoring circuits. |
| High PSRR at low VIN | 50dB rejection at 10kHz even when VIN = VOUT + 0.3V - critical for noise-sensitive applications powered from low-headroom sources. |
Applications
| Cellular Front-End Power | Portable Medical Sensors |
|---|---|
|
Use Scenario: Powering RF transceiver LNA and mixer stages in GSM/UMTS handsets where supply noise directly impacts receiver sensitivity. IC Role / Device Role / Timing Role: Low-noise 3.0V bias source with active enable control synchronized to transmit/receive time slots. Use Value: 30µV(rms) noise and 50dB PSRR prevent AM-to-PM conversion and adjacent-channel interference in sub-1GHz bands. |
Use Scenario: Supplying analog front-end (AFE) and ADC in wearable ECG/SpO₂ monitors operating from coin-cell batteries. IC Role / Device Role / Timing Role: Precision 3.0V reference regulator enabling 16-bit ADC linearity and low-drift sensor signal conditioning. Use Value: 1% initial accuracy and no-load stability maintain measurement integrity during intermittent sampling and deep-sleep modes. |
| Bluetooth Audio Accessories | Industrial Handheld Terminals |
|
Use Scenario: Providing clean 3.0V rail to Bluetooth audio SoC and MEMS microphone preamp in wireless earbuds and headsets. IC Role / Device Role / Timing Role: Enable-controlled LDO activated only during audio streaming to minimize quiescent drain. Use Value: 90µA IQ and "zero" off-mode current extend single-charge runtime beyond 8 hours in compact form factors. |
Use Scenario: Regulating 3.0V for microcontroller I/O, display driver, and barcode scanner laser diode in ruggedized warehouse scanners. IC Role / Device Role / Timing Role: Robust 150mA LDO with thermal shutdown and current limit protecting against short-circuit events in field use. Use Value: 135mV dropout allows operation from partially discharged 3.6V Li-ion packs while sustaining full functionality down to 3.15V input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300mA output, 170mV dropout at 250mA, 40µV(rms) noise, no BYP pin, SOT-23-5. | Lacks dedicated noise-bypass capability; higher noise limits suitability for RF analog sections. | Select when higher output current is required and noise sensitivity is moderate (e.g., MCU core supply). |
| TPS7A2030PDQNR | 300mA output, 130mV dropout at 300mA, 12µV(rms) noise, no enable pin, X2SON-4. | Smaller package but no enable control; ultra-low noise requires different decoupling strategy. | Select when minimal board area and lowest possible noise are priorities, and system-level enable is handled externally. |
Compared with MCP1700T-3002E/MB and TPS7A2030PDQNR, the MIC5252-3.0YM5-TR uniquely balances 3.0V precision, integrated enable, ceramic-capacitor compatibility, and user-controllable noise reduction via BYP - making it optimal for RF-critical, battery-constrained designs where both control flexibility and spectral purity are mandatory.
Availability
MIC5252-3.0YM5-TR is available at Aetrix Electronics and suitable for cellular front-end power, portable medical sensors, Bluetooth audio accessories, industrial handheld terminals, and low-power IoT edge nodes requiring stable component supply across production lifecycles.
Supply support for MIC5252-3.0YM5-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 series was designed specifically for ultra-low-noise, low-quiescent-current regulation in space-constrained, battery-powered RF and portable electronics - emphasizing ceramic-capacitor compatibility and active shutdown.
FAQ
What is the maximum input voltage for MIC5252-3.0YM5-TR?
The absolute maximum input voltage for MIC5252-3.0YM5-TR is +7V, but the recommended operating range is +2.7V to +6.0V. Exceeding 6.0V risks violating safe operating area limits and may trigger overvoltage stress not covered by internal protection circuits. For reliable long-term operation at 150mA load, VIN should remain ≤4.9V at 50°C ambient with standard SOT-23-5 layout due to thermal constraints.
Does MIC5252-3.0YM5-TR require an external bypass capacitor?
Yes, MIC5252-3.0YM5-TR requires a 0.01µF ceramic capacitor connected between the BYP pin and GND to achieve its specified 30µV(rms) output noise. Omitting this capacitor increases noise to ~100µV(rms) and reduces PSRR above 1kHz. The capacitor must be placed close to the BYP pin with short traces to preserve high-frequency effectiveness.
Can MIC5252-3.0YM5-TR operate with zero load current?
Yes, MIC5252-3.0YM5-TR maintains regulation and stability with 0mA load - a key feature confirmed in the datasheet's "No-Load Stability" section. This enables use in CMOS RAM keep-alive circuits, RTC backup supplies, and other always-on low-power functions where output must remain valid even when downstream circuitry is fully disabled.
What is the thermal resistance (θJA) of MIC5252-3.0YM5-TR in SOT-23-5 package?
The junction-to-ambient thermal resistance (θJA) for MIC5252-3.0YM5-TR in SOT-23-5 package is 235°C/W under minimum footprint conditions, 185°C/W with 1"² copper pour, and 145°C/W with optimized thermal pad layout. These values determine maximum allowable power dissipation: at 50°C ambient, PD(max) = (125°C − 50°C)/235°C/W ≈ 315mW - limiting usable VIN–VOUT differential at 150mA to ~2.1V.
Is MIC5252-3.0YM5-TR pin-compatible with other MIC5252 variants?
Yes, all MIC5252-x.xYM5 and MIC5252-x.xBM5 variants share identical SOT-23-5 pinout (IN, GND, EN, BYP, OUT), allowing direct substitution across output voltages (1.8V to 4.75V) without PCB changes. The marking "YM5" denotes Pb-free SOT-23-5 packaging, and electrical behavior - including enable logic, dropout, and noise performance - scales predictably with output voltage per datasheet specifications.
MIC5252-3.0YM5-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):
- 6V
- Voltage - Output (Min/Fixed):
- 3V
- 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:
- SOT-23-5
MIC5252-3.0YM5-TR FAQ
1.How can I place an order for MIC5252-3.0YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5252-3.0YM5-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 MIC5252-3.0YM5-TR reliable?
The price and inventory of MIC5252-3.0YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5252-3.0YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5252-3.0YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5252-3.0YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5252-3.0YM5-TR?
MIC5252-3.0YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5252-3.0YM5-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 MIC5252-3.0YM5-TR?
For technical support, including MIC5252-3.0YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5252-3.0YM5-TR requirements.
6.How does Aetrix verify that MIC5252-3.0YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5252-3.0YM5-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 MIC5252-3.0YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5252-3.0YM5-TR?
All MIC5252-3.0YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5252-3.0YM5-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 MIC5252-3.0YM5-TR part is unused and in its original packaging.
Return procedure for MIC5252-3.0YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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