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Microchip Technology MIC5253-2.6YC5-TR
- Part No.:
- MIC5253-2.6YC5-TR
- Manufacturer:
- Microchip Technology
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MIC5253-2.6YC5-TR.pdf
- Description:
- IC REG LINEAR 2.6V 100MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,304
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Product details
Overview
MIC5253-2.6YC5-TR from Micrel is a 2.6V, 100mA ultra-low-noise CMOS LDO voltage regulator in SC-70-5 package, featuring 165mV dropout at full load, 30µV(rms) output noise, and TTL-compatible enable input-designed for RF power rails in battery-powered handheld devices.
For engineers reviewing the MIC5253-2.6YC5-TR datasheet, MIC5253-2.6YC5-TR pinout, MIC5253-2.6YC5-TR application, or MIC5253-2.6YC5-TR equivalent, key selection criteria include low-noise performance with bypass capacitor support, thermal shutdown protection, stability with 1µF ceramic output capacitors, and zero-current shutdown mode for portable system power management.
Technical Context
The MIC5253-2.6YC5-TR uses a CMOS pass element with active-clamp shutdown and internal reference bypassing via dedicated BYP pin to achieve 30µV(rms) noise (10Hz–100kHz). Its error amplifier drives a quick-start circuit enabling fast turn-on (<150µs) even with 0.01µF bypass capacitance.
It operates across 2.7V–5.5V input range with ±1.5% initial output accuracy and maintains regulation down to zero load. Protection includes thermal shutdown (150°C), current limit (150–450mA), and under-voltage lockout-ensuring robust operation in thermally constrained SC-70-5 layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.6V ±1.5% initial accuracy-ensures stable core/bias rail for sensitive analog/RF ICs without external trimming. |
| Max Output Current | 100mA continuous / 150mA peak-supports low-power microcontrollers, RF front-ends, and sensor signal chains. |
| Dropout Voltage | 165mV @ 100mA-enables operation from single-cell Li-ion (3.0V min) or dual-cell alkaline while maintaining regulation. |
| Output Noise | 30µV(rms), 10Hz–100kHz-meets stringent RF receiver VCO and PLL supply requirements without additional filtering. |
| Ground Current | 95µA @ 100mA load-minimizes quiescent power loss in always-on subsystems like real-time clocks or keep-alive memory. |
| Enable Logic | TTL-compatible EN pin (VIH ≥ 1.6V, VIL ≤ 0.4V)-allows direct interfacing with 1.8V/3.3V GPIO without level-shifting. |
| PSRR | 70dB @ 1kHz (CBYP = 0.1µF)-suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
Pinout & Package
Package: SC-70-5 (C5), 1.80 × 2.20 mm footprint, 0.65 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Supply Input | Accepts 2.7V–5.5V unregulated input; requires 1µF ceramic bypass to GND for stability and noise rejection. |
| 2 - GND | Ground Reference | Low-impedance return path for load, ground current (≤150µA), and BYP capacitor; must be routed with minimal trace inductance. |
| 3 - EN | Enable/Shutdown Input | Active-high TTL logic control; drives regulator ON/OFF; floating state prohibited-must be pulled high or low via MCU GPIO. |
| 4 - BYP | Noise Bypass Terminal | Connects external 0.01–1.0µF capacitor to GND to shunt internal reference noise; directly reduces output RMS noise to 30µV. |
| 5 - OUT | Regulated Output | Delivers 2.6V ±1.5% to load; stable with ≥1µF ceramic capacitor (X7R/X5R dielectric); ESR ≤300mΩ required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Output Noise | 30µV(rms) with 0.01µF BYP capacitor-enables clean power for VCOs, ADC references, and RF transceivers without LC filters. |
| Zero Off-Mode Current | ≤1µA shutdown current-eliminates battery drain during sleep modes in portable electronics. |
| Ceramic Capacitor Stability | Stable with 1µF X7R/X5R ceramic output cap-reduces board area vs. tantalum and avoids aging/drift issues of polymer caps. |
| Fast Transient Response | Load step recovery <5µs (100µA ↔ 100mA)-maintains regulation during burst-mode digital processor activity. |
| Active Output Discharge | Integrated N-channel clamp discharges OUT pin when disabled-prevents floating voltage on downstream circuits during power sequencing. |
Applications
| Cellular Front-End Power | Portable Audio Codec Supply |
|---|---|
Use Scenario: Powers RF transceiver ICs (e.g., PA driver, LNA, mixer) in GSM/UMTS handsets where supply ripple induces phase noise. IC Role / Device Role / Timing Role: Ultra-low-noise 2.6V bias rail for analog RF blocks; BYP pin used with 0.01µF capacitor to meet 30µV(rms) spec. Use Value: Reduces adjacent-channel interference by >15dB versus standard LDOs, improving receiver sensitivity and spectral purity. | Use Scenario: Supplies audio DAC/ADC and headphone amplifier in Bluetooth earbuds with tight battery life constraints. IC Role / Device Role / Timing Role: Primary 2.6V analog supply; EN pin synchronized with codec wake/sleep commands to cut idle current. Use Value: Enables 120-hour standby via sub-1µA shutdown current and eliminates audible pop/click via controlled discharge. |
| Medical Sensor Node Bias | IoT Edge Microcontroller Core Rail |
Use Scenario: Powers low-noise instrumentation amplifiers and sigma-delta ADCs in wearable ECG/PPG modules. IC Role / Device Role / Timing Role: Precision 2.6V reference rail; leverages ±1.5% accuracy and no-load stability for continuous biosignal acquisition. Use Value: Maintains 16-bit effective resolution by limiting supply-induced offset drift to <5µV over temperature. | Use Scenario: Supplies 32-bit ARM Cortex-M0+ core and embedded flash in coin-cell–powered smart sensors. IC Role / Device Role / Timing Role: Main 2.6V core voltage; uses fast turn-on (<150µs) to meet MCU wake-from-sleep timing budgets. Use Value: Achieves 2.1µA average system current in duty-cycled operation by combining low IQ and zero-off current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2602E/TO | 2.6V fixed, 250mA rating, 170mV dropout @ 250mA, 35µV(rms) noise, SOT-23-5 package | Higher current capability but larger footprint; lacks dedicated BYP pin for noise reduction | Select when higher output current or SOT-23 assembly compatibility is prioritized over minimum noise and SC-70 size |
| TCS2117-2.6V | 2.6V fixed, 150mA, 200mV dropout @ 100mA, 42µV(rms) noise, SC-70-5 package, no EN pin | Same footprint but no enable control; higher noise and lower accuracy (±2%) | Select only for cost-sensitive, always-on applications where shutdown control and ultra-low noise are not required |
Compared with MCP1700-2602E/TO and TCS2117-2.6V, the MIC5253-2.6YC5-TR uniquely combines SC-70-5 size, dedicated noise-bypass pin, TTL-enable interface, and 30µV(rms) noise-making it optimal for space-constrained, battery-operated RF and precision analog systems requiring dynamic power control.
Availability
MIC5253-2.6YC5-TR is available at Aetrix Electronics and suitable for cellular front-end power, portable audio codec supply, and medical sensor node bias requiring stable component supply across industrial temperature range (–40°C to +125°C).
Supply support for MIC5253-2.6YC5-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 (acquired by Microchip in 2015) was a U.S.-based analog and mixed-signal IC designer focused on power management, timing, and interface solutions for communications and portable electronics.
The MIC5253 family was engineered specifically for ultra-low-noise, low-quiescent-current regulation in handheld wireless devices-emphasizing SC-70 miniaturization, ceramic capacitor compatibility, and RF-clean power delivery.
FAQ
What is the maximum input voltage rating for the MIC5253-2.6YC5-TR?
The MIC5253-2.6YC5-TR has an absolute maximum input voltage of +7V, but its specified operating input range is +2.7V to +5.5V. Exceeding 5.5V may cause permanent damage or violate thermal limits, especially given its 400°C/W θJA in SC-70-5. For reliable operation at 2.6V output, VIN should remain ≤5.5V to maintain <300mV dropout margin and avoid exceeding 0.21W power dissipation at 100mA load.
Does the MIC5253-2.6YC5-TR require an external bypass capacitor on the BYP pin?
The MIC5253-2.6YC5-TR does not require an external capacitor on the BYP pin to function, but connecting 0.01µF–1.0µF to GND is mandatory to achieve its specified 30µV(rms) output noise. Without the BYP capacitor, noise rises significantly-typically >100µV(rms)-degrading performance in RF and precision analog applications. The device remains stable and regulated with BYP left open, but noise-sensitive use cases demand the capacitor.
Can the MIC5253-2.6YC5-TR operate with zero load current?
Yes, the MIC5253-2.6YC5-TR remains stable and in regulation with zero load current-a key differentiator from many LDOs. Its design ensures no oscillation or dropout under no-load conditions, making it suitable for CMOS RAM keep-alive rails and always-on sensor biasing. Ground current stays at ~75µA at IOUT = 0mA, and output voltage holds within ±3% over temperature per datasheet specs.
What is the thermal shutdown behavior of the MIC5253-2.6YC5-TR?
The MIC5253-2.6YC5-TR activates thermal shutdown at 150°C junction temperature and includes 10°C hysteresis, meaning it resumes regulation only after cooling to ~140°C. During shutdown, the output is disabled and ground current drops to ≤1µA. This protection is independent of EN pin state and responds to die temperature-not ambient-so proper PCB copper pour and layout are essential to manage θJA = 400°C/W in SC-70-5.
Is the MIC5253-2.6YC5-TR compatible with 1.8V GPIO for the EN pin?
Yes, the MIC5253-2.6YC5-TR EN pin is TTL-logic-compatible and accepts 1.8V GPIO directly: VIH (min) = 1.6V and VIL (max) = 0.4V, both referenced to VIN (2.7–5.5V). A 1.8V logic high exceeds VIH threshold, ensuring reliable enable; a 0V or grounded signal meets VIL, guaranteeing shutdown. No level shifter is needed, simplifying interface with modern low-voltage MCUs and PMICs.
MIC5253-2.6YC5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Teeny™
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 150 µA
- PSRR:
- 70dB ~ 65dB (1kHz ~ 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:
- SC-70-5
MIC5253-2.6YC5-TR FAQ
1.How can I place an order for MIC5253-2.6YC5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5253-2.6YC5-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 MIC5253-2.6YC5-TR reliable?
The price and inventory of MIC5253-2.6YC5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5253-2.6YC5-TR is usually 5 days.
3.What payment methods are accepted for MIC5253-2.6YC5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5253-2.6YC5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5253-2.6YC5-TR?
MIC5253-2.6YC5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5253-2.6YC5-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 MIC5253-2.6YC5-TR?
For technical support, including MIC5253-2.6YC5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5253-2.6YC5-TR requirements.
6.How does Aetrix verify that MIC5253-2.6YC5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5253-2.6YC5-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 MIC5253-2.6YC5-TR meets industry standards.
7.What is the process for return or replacement of MIC5253-2.6YC5-TR?
All MIC5253-2.6YC5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5253-2.6YC5-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 MIC5253-2.6YC5-TR part is unused and in its original packaging.
Return procedure for MIC5253-2.6YC5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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