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Microchip Technology MIC5255-2.6YD5-TR
- Part No.:
- MIC5255-2.6YD5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC5255-2.6YD5-TR.pdf
- Description:
- IC REG LIN 2.6V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,316
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Product details
Overview
MIC5255-2.6YD5-TR from Micrel is a 2.6V fixed-output, 150mA ultra-low-noise CMOS LDO regulator in a 5-pin Thin SOT-23-5 package. It delivers 1% initial output accuracy, 135mV dropout at full load, and 30µV(rms) output noise - optimized for RF-sensitive battery-powered systems requiring clean, stable voltage rails.
For engineers reviewing the MIC5255-2.6YD5-TR datasheet, MIC5255-2.6YD5-TR pinout, MIC5255-2.6YD5-TR application, or MIC5255-2.6YD5-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 a 1mm-height footprint.
Technical Context
The MIC5255-2.6YD5-TR employs a precision bandgap reference with active noise-bypass architecture, enabling 30µV(rms) noise performance via external 0.01µF–1.0µF capacitor on the BYP pin. Its CMOS pass element achieves 135mV dropout at 150mA while maintaining 90µA quiescent current.
It integrates TTL-level enable logic (VIH = 1.6V, VIL = 0.4V), active-clamp shutdown for rapid output discharge, and thermal shutdown at 150°C with 10°C hysteresis. Stability is guaranteed with ≥1.0µF low-ESR ceramic output capacitors and no minimum load requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6V ±1% initial accuracy ensures precise biasing for 2.6V logic or RF ICs without external feedback. |
| Dropout Voltage | 135mV at 150mA enables operation from 2.73V input - critical for single-cell Li-ion or Li-poly systems near end-of-discharge. |
| Output Noise | 30µV(rms), 10Hz–100kHz, with 0.01µF BYP capacitor - meets stringent RF front-end supply cleanliness requirements. |
| Quiescent Current | 90µA typical at 100µA load - extends battery life in always-on sensor or standby circuits. |
| Enable Logic | TTL-compatible EN pin (VIH ≥ 1.6V, VIL ≤ 0.4V) allows direct interfacing with microcontrollers without level-shifting. |
| Thermal Protection | 150°C shutdown with 10°C hysteresis prevents damage during sustained overload or poor PCB thermal layout. |
| Capacitor Support | Stable with ≥1.0µF ceramic output capacitor (X7R/X5R); eliminates need for electrolytic or tantalum, saving board space. |
Pinout & Package
Package: 5-pin Thin SOT-23-5 (TSOT-23-5), 2.0mm × 2.1mm × 1.0mm height, exposed pad not present (unlike MLF variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Supply Input | Accepts 2.7V–6.0V input; requires 1.0µF ceramic bypass to GND for stability and noise suppression. |
| 2 - GND | Ground Reference | Primary return path for load, ground current (IGND), and BYP capacitor; must be low-impedance connection. |
| 3 - EN | Enable/Shutdown Input | Active-high TTL-compatible control; drives output ON when ≥1.6V, OFF when ≤0.4V; must not float. |
| 4 - BYP | Noise Bypass Terminal | Connects to internal reference; 0.01µF capacitor to GND reduces output noise by >20dB at 10kHz. |
| 5 - OUT | Regulated Output | Delivers stable 2.6V to load; supports ≥1.0µF ceramic capacitor; remains regulated even at zero load. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise regulation | 30µV(rms) output noise with BYP pin - enables use in GPS receivers, cellular transceivers, and low-phase-noise PLLs. |
| Zero-off-mode current | 0.2µA shutdown current (typ.) - preserves battery charge in sleep modes of portable medical or IoT edge devices. |
| Ceramic-capacitor stability | Guaranteed stability with ≥1.0µF X7R/X5R ceramic output cap - eliminates ESR constraints and simplifies layout. |
| Fast transient response | Optimized internal compensation enables <10µs recovery from 10–150mA load steps - maintains rail integrity during burst-mode operation. |
| Active output clamp | Integrated N-MOSFET discharges OUT pin during shutdown - prevents back-powering of downstream circuitry. |
Applications
| Cellular Transceiver Power | Low-Power Microcontroller Core Rail |
|---|---|
|
Use Scenario: Supplying RF power amplifier and mixer stages in GSM/UMTS handsets where supply ripple directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Ultra-low-noise LDO providing clean 2.6V bias to analog RF blocks, decoupled via BYP pin. Use Value: 30µV(rms) noise floor prevents degradation of receiver sensitivity and transmitter spectral purity. |
Use Scenario: Powering ARM Cortex-M0+ or RISC-V MCU cores operating at 2.6V in wearable health monitors with multi-day battery life. IC Role / Device Role / Timing Role: Primary system regulator delivering precise 2.6V with enable-controlled deep-sleep mode entry/exit. Use Value: 90µA quiescent current and 0.2µA shutdown minimize idle power; 1% accuracy ensures consistent timing and ADC reference stability. |
| Bluetooth LE Audio Earbud Bias | Industrial Sensor Node Analog Front-End |
|
Use Scenario: Providing regulated 2.6V to Bluetooth audio codec and Class-D amplifier in compact true-wireless stereo earbuds. IC Role / Device Role / Timing Role: Compact LDO with 1mm height enabling placement under stacked PCBs; BYP pin suppresses switching noise from DC-DC converters. Use Value: TSOT-23-5 footprint and 135mV dropout allow direct integration with 3.0V buck converter output, minimizing heat and board area. |
Use Scenario: Powering precision op-amps and 16-bit SAR ADCs in battery-operated environmental sensors deployed in remote locations. IC Role / Device Role / Timing Role: Stable, low-drift 2.6V reference source for signal conditioning chain; no-load stability avoids brownout during intermittent sampling. Use Value: 2.0% output accuracy over –40°C to +125°C ensures measurement repeatability across industrial temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0526PDQNR | 2.6V fixed, 200mA, 170mV dropout @ 200mA, 4.5µV(rms) noise (with 10nF BYP), 25µA IQ | Lower noise and IQ, but requires 10nF BYP (not 0.01µF); no active output clamp | Preferred for ultra-low-power IoT nodes where 4.5µV noise is mandatory and output discharge is handled externally. |
| MCP1700T-2602E/MB | 2.6V fixed, 250mA, 178mV dropout @ 250mA, 30µV(rms) noise, 1.6µA IQ, no BYP pin | Same noise spec but lacks dedicated BYP pin; simpler layout but less flexible noise tuning | Suitable for cost-sensitive consumer electronics where BYP flexibility is unnecessary and lower IQ is secondary to footprint. |
Compared with TPS7A0526PDQNR and MCP1700T-2602E/MB, the MIC5255-2.6YD5-TR uniquely combines 30µV(rms) noise with a user-tunable BYP pin, active output discharge, and 1% initial accuracy - making it optimal for RF-critical, thermally constrained handheld designs where layout flexibility and fast shutdown behavior are essential.
Availability
MIC5255-2.6YD5-TR is available at Aetrix Electronics and suitable for cellular transceivers, portable medical sensors, Bluetooth audio subsystems, and industrial IoT edge nodes requiring stable component supply with long-term lifecycle assurance.
Supply support for MIC5255-2.6YD5-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 high-performance analog, mixed-signal, and power management ICs before its acquisition by Microchip Technology in 2015.
The MIC5255 series was designed specifically for ultra-low-noise, space-constrained battery-powered RF and portable computing applications - emphasizing ceramic-capacitor compatibility, minimal height, and precision regulation.
FAQ
What is the maximum input voltage rating for the MIC5255-2.6YD5-TR?
The MIC5255-2.6YD5-TR has an absolute maximum input voltage of +7V, but its specified operating range is +2.7V to +6.0V. Exceeding 6.0V may cause reliability issues despite surviving short-term stress. For continuous operation, keep VIN ≤ 6.0V - especially critical when paired with higher-voltage battery sources like two-cell Li-ion packs.
Does the MIC5255-2.6YD5-TR require an external bypass capacitor on the BYP pin?
The MIC5255-2.6YD5-TR does not require the BYP pin to be used - it functions correctly with BYP left open. However, connecting a 0.01µF ceramic capacitor from BYP to GND reduces output noise from ~100µV(rms) to 30µV(rms), which is essential for RF applications. Larger values (up to 1.0µF) further improve PSRR but slightly increase turn-on time.
Can the MIC5255-2.6YD5-TR operate without any load connected to the OUT pin?
Yes, the MIC5255-2.6YD5-TR remains stable and in regulation with zero load - a key differentiator from many older LDOs. This makes it ideal for applications like CMOS RAM keep-alive circuits or always-on sensor bias rails where load current may drop to 0µA during sleep cycles without risking oscillation or dropout.
What is the thermal resistance (θJA) of the MIC5255-2.6YD5-TR in its TSOT-23-5 package?
The MIC5255-2.6YD5-TR in the 5-pin Thin SOT-23-5 (D5) package has a junction-to-ambient thermal resistance (θJA) of 235°C/W on a minimum footprint PCB, per Micrel's datasheet. With proper copper pour and thermal vias, this can be reduced to ~185°C/W. At 150mA and 135mV dropout, power dissipation is only ~20mW - well within safe limits even in compact layouts.
Is the MIC5255-2.6YD5-TR pin-compatible with other variants in the MIC5255 family?
Yes - all MIC5255-x.xYD5 and MIC5255-x.xBD5 variants share identical pinout, package dimensions, and footprint in the TSOT-23-5 package. The MIC5255-2.6YD5-TR can be substituted with MIC5255-3.3YD5 or MIC5255-2.8YD5 without PCB changes, provided system voltage requirements align with the new output voltage.
MIC5255-2.6YD5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 50dB (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:
- TSOT-23-5
MIC5255-2.6YD5-TR FAQ
1.How can I place an order for MIC5255-2.6YD5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5255-2.6YD5-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 MIC5255-2.6YD5-TR reliable?
The price and inventory of MIC5255-2.6YD5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5255-2.6YD5-TR is usually 5 days.
3.What payment methods are accepted for MIC5255-2.6YD5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5255-2.6YD5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5255-2.6YD5-TR?
MIC5255-2.6YD5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5255-2.6YD5-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 MIC5255-2.6YD5-TR?
For technical support, including MIC5255-2.6YD5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5255-2.6YD5-TR requirements.
6.How does Aetrix verify that MIC5255-2.6YD5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5255-2.6YD5-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 MIC5255-2.6YD5-TR meets industry standards.
7.What is the process for return or replacement of MIC5255-2.6YD5-TR?
All MIC5255-2.6YD5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5255-2.6YD5-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 MIC5255-2.6YD5-TR part is unused and in its original packaging.
Return procedure for MIC5255-2.6YD5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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