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Microchip Technology MIC5252-2.85YM5-TR
- Part No.:
- MIC5252-2.85YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5252-2.85YM5-TR.pdf
- Description:
- IC REG LIN 2.85V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,953
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Product details
Overview
MIC5252-2.85YM5-TR from Micrel is a 2.85V, 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 in battery-powered handheld devices.
For engineers reviewing the MIC5252-2.85YM5-TR datasheet, MIC5252-2.85YM5-TR pinout, MIC5252-2.85YM5-TR application, or MIC5252-2.85YM5-TR equivalent, key selection criteria include PSRR performance at low VIN (48dB @ 10kHz), TTL-compatible enable input with <1µA shutdown current, ceramic capacitor stability, and thermal shutdown at 150°C.
Technical Context
The MIC5252-2.85YM5-TR implements a precision bandgap reference with active noise cancellation and a quick-start bypass circuit that maintains fast turn-on time even with 0.01µF–1µF CBYP capacitors. Its error amplifier drives a PMOS pass device with integrated current limiting and thermal foldback.
It operates across 2.7V–6.0V input range while delivering stable 2.85V output with load regulation of ≤1.5% from 0.1mA to 150mA and line regulation of ≤0.2% over full VIN range - enabled by high PSRR (≥48dB up to 10kHz) and low ground current (90µA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.85V ±1% initial accuracy - ensures precise biasing for RF front-end ICs and low-voltage microcontrollers. |
| Dropout Voltage | 135mV @ 150mA - enables operation from single-cell Li-ion (3.0V min) or dual-cell alkaline with margin. |
| Output Noise | 30µV(rms), 10Hz–100kHz - meets stringent spectral purity requirements in GSM/EDGE transceivers. |
| PSRR | 48dB @ 10kHz, VIN = VOUT + 0.3V - suppresses switching noise from DC-DC converters feeding the LDO input. |
| Quiescent Current | 90µA typical - extends battery life in always-on sensor nodes and standby modes. |
| Enable Threshold | VIH = 1.6V, VIL = 0.4V - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Shutdown | 150°C with 10°C hysteresis - protects against sustained overload in compact PCB layouts. |
Pinout & Package
SOT-23-5 (M5) package: 2.9mm × 1.6mm footprint, 1.1mm height, exposed pad not present - suitable for space-constrained mobile PCBs.
| 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. |
| 2 (GND) | Ground Reference | Common return path for load, input cap, bypass cap, and enable logic; must be low-impedance. |
| 3 (EN) | Enable/Shutdown Input | TTL-compatible active-high control; <1µA leakage in shutdown; must not float. |
| 4 (BYP) | Noise Bypass Terminal | Connects external 0.01µF–1µF capacitor to GND to reduce reference noise and improve PSRR. |
| 5 (OUT) | Regulated Output | Delivers 2.85V ±1% to load; requires ≥1µF ceramic output capacitor (X7R/X5R) for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30µV(rms) output noise with 0.01µF BYP capacitor - eliminates need for secondary filtering in sensitive analog/RF rails. |
| Active shutdown clamp | Internal N-MOSFET discharges OUT pin when EN = low - prevents back-powering of downstream circuitry during sleep. |
| Ceramic capacitor compatibility | Stable with 1µF X7R/X5R output cap (ESR ≤300mΩ) - reduces board area vs. tantalum and avoids aging effects. |
| Faster transient response | Sub-10µs recovery from 50mA load step - maintains voltage integrity during burst-mode RF transmission. |
| No-load stability | Remains in regulation with zero load current - supports CMOS RAM keep-alive and real-time clock backup rails. |
Applications
| Cellular Transceiver Power | Low-Power Microcontroller Core Rail |
|---|---|
Use Scenario: Powering the VCC_RF rail of a GSM/EDGE transceiver IC in a feature phone. IC Role / Device Role / Timing Role: Ultra-low-noise LDO supplying clean 2.85V to RF synthesizer and PA driver stages. Use Value: 30µV(rms) noise prevents reciprocal mixing and maintains EVM <3% under 200kHz offset. |
Use Scenario: Providing core voltage to an ARM Cortex-M0+ MCU operating in deep-sleep mode. IC Role / Device Role / Timing Role: Enable-controlled LDO delivering 2.85V with <1µA shutdown current and fast wake-up. Use Value: Enables 10-year battery life in coin-cell-powered IoT edge nodes with 1-second wake intervals. |
| Portable Medical Sensor Bias | Wireless Headset Audio Codec Supply |
Use Scenario: Biasing a low-noise instrumentation amplifier in a wearable ECG patch. IC Role / Device Role / Timing Role: Precision LDO generating stable 2.85V reference for ADC front-end and signal chain. Use Value: 1% initial accuracy and <1.5% load regulation ensure consistent gain calibration across 0.1–150mA dynamic current draw. |
Use Scenario: Supplying the analog section of a Bluetooth audio codec in true-wireless stereo earbuds. IC Role / Device Role / Timing Role: Low-ESR-ceramic-optimized LDO powering DAC, headphone amp, and PLL circuits. Use Value: 48dB PSRR at 10kHz rejects noise from adjacent 2.4GHz RF section and switching regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-285I/TT | 250mA rating, 170mV dropout @ 250mA, 65µV(rms) noise, no BYP pin | Lacks noise-bypass capability; higher noise limits use in RF-sensitive designs | Select when higher output current is required and RF noise immunity is secondary |
| TCS2102-2.85V | 150mA rating, 140mV dropout @ 150mA, 45µV(rms) noise, 1.2µA quiescent current | Higher IQ and noise; no active shutdown clamp | Select when board space allows larger package and faster discharge is not required |
Compared with MCP1700T-285I/TT and TCS2102-2.85V, the MIC5252-2.85YM5-TR delivers superior RF noise performance (30µV vs. ≥45µV), enables tighter system-level EVM compliance, and provides active output discharge - critical for multi-rail power sequencing in portable electronics.
Availability
MIC5252-2.85YM5-TR is available at Aetrix Electronics and suitable for cellular accessories, portable medical sensors, and wireless audio devices requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MIC5252-2.85YM5-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
Micrel, Inc. was a U.S.-based semiconductor company specializing in power management, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC5252 product line was designed specifically for ultra-low-noise, low-quiescent-current regulation in battery-powered RF and portable computing systems - emphasizing ceramic capacitor compatibility and fast transient response.
FAQ
What is the maximum input voltage for MIC5252-2.85YM5-TR?
The absolute maximum input voltage for MIC5252-2.85YM5-TR is +7V, but the recommended operating range is +2.7V to +6.0V per the datasheet. Exceeding 6.0V risks violating internal voltage ratings and may trigger overvoltage protection or cause permanent damage. For reliable operation at 150mA load, VIN should remain ≤4.9V when ambient temperature is 50°C in a minimal-footprint SOT-23-5 layout.
Does MIC5252-2.85YM5-TR require an external bypass capacitor?
Yes, MIC5252-2.85YM5-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 and optimal PSRR. Omitting this capacitor increases output noise significantly and degrades ripple rejection above 1kHz. The device remains functional without it but fails to meet ultra-low-noise design targets.
Can MIC5252-2.85YM5-TR operate with zero load current?
Yes, MIC5252-2.85YM5-TR is explicitly characterized for no-load stability and remains in regulation with 0mA output current. This behavior is confirmed in the "No-Load Stability" section of the datasheet and makes MIC5252-2.85YM5-TR suitable for CMOS RAM keep-alive, RTC backup, and other always-on low-power applications where load current may drop to zero.
What is the thermal resistance (θJA) of MIC5252-2.85YM5-TR in SOT-23-5 package?
The junction-to-ambient thermal resistance (θJA) for MIC5252-2.85YM5-TR in SOT-23-5 package is 235°C/W under standard minimum-footprint PCB conditions. With 1"² copper pour, θJA improves to 185°C/W, and with optimized thermal vias to inner ground planes, it reaches 145°C/W. These values directly determine maximum allowable power dissipation before thermal shutdown activates at 150°C.
Is MIC5252-2.85YM5-TR pin-compatible with other MIC5252 variants?
Yes, all MIC5252-x.xYM5 and MIC5252-x.xBM5 variants share identical SOT-23-5 pinout and electrical interface - only the output voltage and marking differ. MIC5252-2.85YM5-TR can replace MIC5252-2.8BM5 or MIC5252-3.0YM5 on the same PCB without layout changes, provided the system tolerates the 2.85V output and thermal/power constraints remain valid.
MIC5252-2.85YM5-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):
- 6V
- Voltage - Output (Min/Fixed):
- 2.85V
- 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
MIC5252-2.85YM5-TR FAQ
1.How can I place an order for MIC5252-2.85YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5252-2.85YM5-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 MIC5252-2.85YM5-TR reliable?
The price and inventory of MIC5252-2.85YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5252-2.85YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5252-2.85YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5252-2.85YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5252-2.85YM5-TR?
MIC5252-2.85YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5252-2.85YM5-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 MIC5252-2.85YM5-TR?
For technical support, including MIC5252-2.85YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5252-2.85YM5-TR requirements.
6.How does Aetrix verify that MIC5252-2.85YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5252-2.85YM5-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 MIC5252-2.85YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5252-2.85YM5-TR?
All MIC5252-2.85YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5252-2.85YM5-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 MIC5252-2.85YM5-TR part is unused and in its original packaging.
Return procedure for MIC5252-2.85YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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