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Microchip Technology MIC5225-1.5YM5-TR
- Part No.:
- MIC5225-1.5YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5225-1.5YM5-TR.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,064
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Product details
Overview
MIC5225-1.5YM5-TR from Micrel is a fixed-output 1.5V, 150mA ultra-low-quiescent-current LDO regulator in SOT23-5 package, featuring 29µA ground current, 310mV dropout at full load, and ±2.0% output accuracy over –40°C to +125°C - designed for battery-powered USB and portable electronics using 1–3-cell Li-ion inputs.
For engineers reviewing the MIC5225-1.5YM5-TR datasheet, MIC5225-1.5YM5-TR pinout, MIC5225-1.5YM5-TR application, or MIC5225-1.5YM5-TR equivalent, key selection criteria include low-IQ operation under light loads, µCap stability with 2.2µF ceramic output capacitance, reverse battery protection, zero shutdown current, and thermal/current limiting for robust portable power management.
Technical Context
The MIC5225-1.5YM5-TR implements a bandgap-referenced linear regulation architecture with an internal 1.24V reference and active-high enable control. Its low-dropout design maintains regulation down to 310mV headroom at 150mA, enabling efficient operation across 2.3V–16V input range while delivering stable 1.5V output.
It integrates reverse battery protection, reverse leakage protection, thermal shutdown, and current limit - all functional within its –40°C to +125°C junction temperature range. The device draws only 29µA ground current at light load (100µA), rising to 3mA at 150mA, and drops to <5µA in shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2.0% over full temperature and load range - ensures stable core/bias rail for low-voltage logic and sensors. |
| Max Output Current | 150mA guaranteed - supports moderate-power microcontrollers, RF modules, and analog circuitry without derating. |
| Dropout Voltage | 310mV at 150mA - enables operation from single Li-ion (3.0V min) or two alkaline cells (up to 3.2V) with margin. |
| Ground Current | 29µA typical at 100µA load - minimizes battery drain in always-on keep-alive and sleep-mode applications. |
| Input Voltage Range | 2.3V to 16V - accommodates wide battery chemistries (Li-ion, NiMH, alkaline) and unregulated wall adapters. |
| Output Capacitor | Stable with ≥2.2µF ceramic or tantalum - eliminates need for large electrolytics; supports compact PCB layout. |
| Enable Threshold | Logic-high enable >2.0V; logic-low shutdown <0.6V - compatible with 1.8V/3.3V GPIOs and provides clean power sequencing. |
Pinout & Package
Package: IttyBitty® SOT23-5 (M5), 5-pin surface-mount package with 235°C/W junction-to-ambient thermal resistance, Pb-free finish, and –40°C to +125°C operating junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Supply Input | Accepts 2.3V–16V input; requires ≥1.0µF bypass capacitor near pin for stability and ripple rejection. |
| 2 - GND | Ground Reference | Common return path for input, output, and internal circuitry; must be low-impedance connection to minimize noise. |
| 3 - EN | Enable Input | Active-high control: high (>2.0V) enables regulation; low (<0.6V) or open disables output with <5µA shutdown current. |
| 4 - NC | No Connect (Fixed Version) | Not internally connected; must be left floating - not tied to any potential or capacitor. |
| 5 - OUT | Regulated Output | Delivers stable 1.5V; requires ≥2.2µF ceramic capacitor (X7R/X5R) directly at pin for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 29µA at 100µA load - extends battery life in low-duty-cycle IoT sensors and real-time clock backup supplies. |
| Reverse battery protection | Blocks conduction when input polarity is reversed - prevents damage during battery insertion errors in handheld devices. |
| Zero shutdown current | <5µA total device current in EN = low state - eliminates parasitic drain in long-term storage or emergency-off modes. |
| µCap stability | Stable with 2.2µF ceramic output capacitor - reduces BOM count and board space vs. traditional LDOs requiring 10µF+ tantalum. |
| Thermal & current protection | Internally limits output current and shuts down above 150°C - ensures safe operation under overload or poor heatsinking. |
Applications
| Cellular Phone Power Rail | Keep-Alive Supply for RTC/CMOS RAM |
|---|---|
|
Use Scenario: Powers baseband processor I/O or SIM interface in GSM/3G handsets using single Li-ion cell (3.0–4.2V). IC Role / Device Role / Timing Role: Primary 1.5V bias regulator providing low-noise, low-IQ supply independent of system PMIC. Use Value: Enables extended standby time via 29µA quiescent draw and maintains regulation down to 1.81V input (1.5V + 310mV dropout). |
Use Scenario: Maintains voltage to real-time clock and SRAM during main system power-down in notebooks and tablets. IC Role / Device Role / Timing Role: Always-on LDO supplying critical memory retention rail with zero shutdown leakage. Use Value: Delivers stable 1.5V with no-load regulation and <5µA shutdown current - prevents data loss over months of battery-only operation. |
| Battery-Powered Medical Sensor | Automotive Body Control Module (BCM) Sub-Rail |
|
Use Scenario: Powers low-power analog front-end and BLE transceiver in wearable ECG patch powered by coin cell or thin Li-poly. IC Role / Device Role / Timing Role: Precision 1.5V reference-grade supply ensuring ADC accuracy and RF transmit consistency. Use Value: ±2.0% output accuracy and excellent line/load regulation preserve signal integrity across battery discharge curve (3.6V → 2.5V). |
Use Scenario: Supplies 1.5V logic for LIN transceiver or EEPROM in automotive BCMs with 12V battery input and load-dump transients. IC Role / Device Role / Timing Role: Secondary regulated rail tolerant of reverse-battery faults and thermal stress in under-hood environments. Use Value: Reverse battery protection and –40°C to +125°C operation ensure reliability during jump-starts and engine bay temperature cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 1.5V fixed, 250mA, 1.6µA IQ, but max input 6V - lacks reverse battery protection and 16V capability. | Suitable for sub-6V systems only; cannot replace MIC5225-1.5YM5-TR in 12V automotive or multi-cell battery inputs. | Select when ultra-low IQ (<2µA) is critical and input stays ≤6V; verify reverse-polarity handling externally. |
| Torex XC6206P152MR-G | 1.5V fixed, 150mA, 1µA IQ, 350mV dropout, no enable pin or reverse protection - SOT23-3 package. | Lacks EN control and fault protections; requires external enable circuitry and reverse-blocking diode for equivalent functionality. | Choose for minimal IQ in space-constrained designs where enable and protection are implemented elsewhere. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the MIC5225-1.5YM5-TR uniquely combines 16V input tolerance, integrated reverse battery protection, active-high enable, and 29µA IQ in a 5-pin SOT23 - making it the only drop-in solution for ruggedized 1–3-cell Li-ion and 12V automotive auxiliary rails requiring full fault coverage.
Availability
MIC5225-1.5YM5-TR is available at Aetrix Electronics and suitable for cellular phone power rails, RTC keep-alive supplies, and battery-powered medical sensors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MIC5225-1.5YM5-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 analog and mixed-signal semiconductor company founded in 1978 and acquired by Microchip Technology in 2015; known for high-performance power management and timing solutions.
The MIC5225 product line delivers ultra-low-quiescent-current LDO regulators optimized for battery longevity and fault-tolerant operation in portable, automotive, and industrial edge devices - emphasizing input voltage flexibility, protection integration, and µCap simplicity.
FAQ
What is the maximum input voltage rating for the MIC5225-1.5YM5-TR?
The MIC5225-1.5YM5-TR has an absolute maximum input voltage rating of 18V, with continuous operation specified from 2.3V to 16V. Exceeding 16V may trigger internal protection or degrade long-term reliability. The device's wide input range allows direct use with 12V automotive systems, multi-cell batteries, and unregulated wall adapters without external pre-regulation.
Does the MIC5225-1.5YM5-TR require an external feedback resistor network?
No, the MIC5225-1.5YM5-TR is a fixed-output variant and does not require external feedback resistors. Pin 4 is labeled NC (No Connect) and must remain unconnected. Only the adjustable version (MIC5225YM5) uses pins 3 (EN) and 4 (ADJ) together for voltage setting; the -1.5YM5-TR integrates the 1.5V reference internally.
Can the MIC5225-1.5YM5-TR operate with no load?
Yes, the MIC5225-1.5YM5-TR remains stable and in regulation with zero load - a key feature confirmed in the datasheet's "No-Load Stability" section. This behavior is essential for CMOS RAM keep-alive and real-time clock applications where the output may sit idle for extended periods without oscillation or dropout.
What type of output capacitor is recommended for the MIC5225-1.5YM5-TR?
The MIC5225-1.5YM5-TR is optimized for 2.2µF X7R or X5R ceramic capacitors with ≤300mΩ ESR. These dielectrics provide stable capacitance over temperature and ensure loop stability without requiring larger or higher-ESR tantalum alternatives. Y5V or Z5U ceramics are discouraged due to excessive capacitance drift.
Is reverse battery protection active when the MIC5225-1.5YM5-TR is in shutdown mode?
Yes, reverse battery protection remains fully functional regardless of enable state - it is an inherent property of the internal MOSFET structure and does not depend on EN pin status. When VIN is reversed (e.g., –15V applied), output leakage is limited to –0.1µA, protecting downstream circuitry even during battery replacement or maintenance.
MIC5225-1.5YM5-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):
- 16V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.45V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5225-1.5YM5-TR FAQ
1.How can I place an order for MIC5225-1.5YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5225-1.5YM5-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 MIC5225-1.5YM5-TR reliable?
The price and inventory of MIC5225-1.5YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5225-1.5YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5225-1.5YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5225-1.5YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5225-1.5YM5-TR?
MIC5225-1.5YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5225-1.5YM5-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 MIC5225-1.5YM5-TR?
For technical support, including MIC5225-1.5YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5225-1.5YM5-TR requirements.
6.How does Aetrix verify that MIC5225-1.5YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5225-1.5YM5-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 MIC5225-1.5YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5225-1.5YM5-TR?
All MIC5225-1.5YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5225-1.5YM5-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 MIC5225-1.5YM5-TR part is unused and in its original packaging.
Return procedure for MIC5225-1.5YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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