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Microchip Technology MIC5252-1.5BML TR
- Part No.:
- MIC5252-1.5BML TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-VDFN Exposed Pad, 6-MLF®
- Datasheet:
-
MIC5252-1.5BML TR.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 6MLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,344
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Product details
Overview
MIC5252-1.5BML TR from Micrel, Inc. is a precision 1.5V fixed-output CMOS low-dropout (LDO) voltage regulator in a 6-pin 2mm × 2mm MLF™ package, delivering 150mA output with 135mV dropout at full load, 1% initial accuracy, and ultra-low 30µV(rms) output noise - optimized for RF power stages and battery-powered wireless receivers requiring clean, stable bias.
For engineers reviewing the MIC5252-1.5BML TR datasheet, MIC5252-1.5BML TR pinout, MIC5252-1.5BML TR application, or MIC5252-1.5BML TR equivalent, key selection criteria include its TTL-compatible enable input, 90µA quiescent current in active mode, 0.2µA shutdown current, PSRR of 48dB at 10kHz, and compatibility with low-ESR ceramic capacitors without external compensation.
Technical Context
The MIC5252-1.5BML TR integrates a precision bandgap reference, error amplifier, and NMOS pass transistor with active-clamp shutdown logic. Its internal quick-start circuit enables fast turn-on even with 0.01µF–1µF bypass capacitance on the BYP pin.
It operates across 2.7V–6.0V input range while maintaining regulation down to 1.5V output, supports no-load stability, and features thermal shutdown (150°C) and current limit (250mA min) - all within a thermally enhanced MLF™ package with θJA = 90°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% initial accuracy ensures stable core/bias rail for low-voltage RF ICs and microcontrollers. |
| Dropout Voltage | 135mV @ 150mA enables operation from single-cell Li-ion (3.0V–4.2V) or dual-cell alkaline with >1.365V headroom. |
| Output Noise | 30µV(rms), 10Hz–100kHz, with 0.01µF BYP capacitor - critical for VCO/PLL supply cleanliness in cellular transceivers. |
| PSRR | 48dB @ 10kHz (VIN = VOUT + 0.3V) suppresses switching noise from DC-DC converters feeding the LDO input. |
| Quiescent Current | 90µA typical active-mode ground current minimizes battery drain in always-on sensor nodes and standby circuits. |
| Enable Threshold | VIH = 1.6V min, VIL = 0.4V max - compatible with 1.8V/3.3V GPIO without level-shifting for host-controlled power sequencing. |
| Thermal Shutdown | 150°C junction temperature with 10°C hysteresis prevents latch-up during transient overloads in compact handheld enclosures. |
Pinout & Package
Package: 6-pin 2mm × 2mm MLF™ (MicroLeadFrame™) with exposed thermal pad (EP) internally connected to GND - requires external solder connection to PCB ground plane for optimal thermal performance (θJA = 90°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable/Shutdown Input | CMOS-compatible active-high control; drives output to zero-current shutdown when pulled ≤0.4V; must not float. |
| 2 - GND | Ground Reference | Primary return path for load and quiescent current; connects to EP for thermal conduction. |
| 3 - IN | Input Supply | Accepts 2.7V–6.0V; requires ≥1µF low-ESR ceramic bypass to GND for stability and PSRR optimization. |
| 4 - OUT | Regulated Output | Delivers 1.5V ±1% at up to 150mA; requires ≥1µF ceramic output capacitor (X7R/X5R dielectric recommended). |
| 6 - BYP | Noise Bypass Terminal | Connects 0.01µF–1µF capacitor to GND to reduce reference noise; improves PSRR and lowers output ripple. |
| 5 - NC | No Internal Connection | Unbonded pin; no electrical function - must remain unconnected per design. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30µV(rms) output noise with 0.01µF BYP cap enables direct powering of VCOs, ADC references, and RF front-ends. |
| Active-clamp shutdown | Internal NMOS discharge path rapidly de-energizes output capacitor and load upon EN deactivation - prevents floating rail issues. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output caps (ESR ≤300mΩ); eliminates need for tantalum or electrolytic components. |
| No-load regulation | Maintains 1.5V output with zero load current - essential for CMOS RAM keep-alive and real-time clock backup supplies. |
| High PSRR at low VIN | 48dB rejection at 10kHz with VIN = VOUT + 0.3V (i.e., 1.8V input) supports use behind buck converters with minimal headroom. |
Applications
| Cellular Transceiver Power | Low-Power Microcontroller Core Supply |
|---|---|
Use Scenario: Powering the VCO and LNA bias rails in GSM/UMTS/WCDMA front-end modules where supply noise directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Ultra-low-noise 1.5V LDO providing clean analog supply independent of noisy digital domains. Use Value: 30µV(rms) noise and 48dB PSRR at 10kHz prevent phase noise degradation and maintain <–35dBc ACLR in transmit paths. |
Use Scenario: Supplying the core voltage (VDDCORE) of ARM Cortex-M0+ or RISC-V SoCs operating at 1.5V in portable medical sensors and wearables. IC Role / Device Role / Timing Role: Precision, low-quiescent LDO enabling deep-sleep modes with sub-100µA system standby current. Use Value: 90µA active IQ and 0.2µA shutdown current extend battery life beyond 12 months on coin-cell power. |
| RFID Reader Analog Front-End | Bluetooth LE Audio Peripheral Bias |
Use Scenario: Generating stable 1.5V reference for high-resolution ADCs and DACs in UHF RFID reader baseband signal chains. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source ensuring <±0.5 LSB integral nonlinearity in 12-bit data converters. Use Value: 1% initial accuracy and 2% over –40°C to +125°C maintains ADC calibration across industrial temperature ranges. |
Use Scenario: Biasing MEMS microphones and Class-D audio amplifiers in Bluetooth earbuds with tight space constraints. IC Role / Device Role / Timing Role: Compact-area MLF™ LDO delivering regulated 1.5V from shared 3.3V rail with fast enable/disable for audio channel gating. Use Value: 6-pin 2×2mm footprint and 10µs enable delay support rapid audio channel power cycling without pop/click artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 150mA, 1.5V, 170mV dropout @ 150mA; 1.8µA IQ; SOT-23-3 (no EN/BYP pins) | Lacks enable and noise-bypass functionality; unsuitable for RF-sensitive or host-controlled sequencing use cases. | Select only for cost-sensitive, always-on, non-RF applications where board space and noise immunity are secondary. |
| Torex XC6206P152MR-G | 150mA, 1.5V, 250mV dropout @ 150mA; 1µA IQ; SOT-25 (EN only, no BYP) | Higher dropout limits usable input range; no bypass pin eliminates ultra-low-noise capability. | Prefer for ultra-low-IQ battery backup rails where noise is not critical and 2.7V minimum input is acceptable. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the MIC5252-1.5BML TR uniquely combines 135mV dropout, 30µV(rms) noise, and dual-function EN/BYP pins in a thermally efficient MLF™ package - making it the only option among the three qualified for RF analog supply and dynamic power-gating designs.
Availability
MIC5252-1.5BML TR is available at Aetrix Electronics and suitable for cellular transceiver power, low-power microcontroller core supply, and RFID reader analog front-end applications requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.
Supply support for MIC5252-1.5BML 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 fabless semiconductor company specializing in high-performance analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5252 family was designed specifically for ultra-low-noise, low-quiescent-current regulation in battery-powered RF and portable electronics - emphasizing ceramic-capacitor compatibility, fast transient response, and integrated enable/shutdown control.
FAQ
What is the maximum input voltage rating for MIC5252-1.5BML TR?
The MIC5252-1.5BML TR has an absolute maximum input voltage rating of +7V, but its specified operating input range is +2.7V to +6.0V. Operation above 6.0V violates the device's functional specifications and may cause permanent damage or unpredictable behavior. For reliable 1.5V output regulation, VIN must exceed 1.635V (1.5V + 135mV dropout) under 150mA load.
Does MIC5252-1.5BML TR require an external bypass capacitor on the BYP pin?
Yes - the MIC5252-1.5BML 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 performance. Without this capacitor, output noise increases significantly, degrading RF signal integrity. The datasheet recommends 0.01µF for optimal noise reduction with minimal impact on turn-on time.
Can MIC5252-1.5BML TR operate with zero load current?
Yes - the MIC5252-1.5BML TR remains stable and maintains regulation with no load current, a feature explicitly verified in the datasheet's "No-Load Stability" section. This makes it suitable for applications like CMOS RAM keep-alive supplies and RTC backup rails where continuous regulation at microamp-level loads is required.
What is the thermal resistance (θJA) of MIC5252-1.5BML TR in its MLF™ package?
The MIC5252-1.5BML TR has a junction-to-ambient thermal resistance (θJA) of 90°C/W when mounted on a standard PCB with recommended copper pour and thermal vias to the ground plane. This value assumes proper layout per Micrel's package guidelines; θJA rises significantly with reduced copper area or inadequate thermal relief.
Is MIC5252-1.5BML TR pin-compatible with other MIC5252 variants in the MLF™ package?
Yes - all MIC5252-x.xBML variants share identical 6-pin MLF™ pinout (IN, GND, EN, OUT, NC, BYP), including MIC5252-1.5BML TR. Output voltage is laser-trimmed during manufacturing; no external resistors or configuration pins are needed. This allows drop-in replacement across 1.5V–4.75V versions when board layout and thermal design accommodate the specific output requirement.
MIC5252-1.5BML TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad, 6-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.5V
- 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)
MIC5252-1.5BML TR FAQ
1.How can I place an order for MIC5252-1.5BML TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5252-1.5BML 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 MIC5252-1.5BML TR reliable?
The price and inventory of MIC5252-1.5BML TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5252-1.5BML TR is usually 5 days.
3.What payment methods are accepted for MIC5252-1.5BML TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5252-1.5BML TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5252-1.5BML TR?
MIC5252-1.5BML TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5252-1.5BML 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 MIC5252-1.5BML TR?
For technical support, including MIC5252-1.5BML TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5252-1.5BML TR requirements.
6.How does Aetrix verify that MIC5252-1.5BML TR is sourced from the original manufacturer or authorized distributors?
All MIC5252-1.5BML 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 MIC5252-1.5BML TR meets industry standards.
7.What is the process for return or replacement of MIC5252-1.5BML TR?
All MIC5252-1.5BML TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5252-1.5BML 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 MIC5252-1.5BML TR part is unused and in its original packaging.
Return procedure for MIC5252-1.5BML TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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