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Microchip Technology MIC5501-1.8YMT-TZ
- Part No.:
- MIC5501-1.8YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5501-1.8YMT-TZ.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
MIC5501-1.8YMT-TZ from Microchip Technology is a 300 mA, fixed 1.8 V output low-dropout linear regulator in a 4-lead 1.0 mm × 1.0 mm thin DFN package, operating from 2.5 V to 5.5 V input with ±2% output accuracy and 160 mV dropout at full load-designed for power management in space-constrained portable electronics such as medical wearables and GPS modules.
For engineers reviewing the MIC5501-1.8YMT-TZ datasheet, MIC5501-1.8YMT-TZ pinout, MIC5501-1.8YMT-TZ application, or MIC5501-1.8YMT-TZ equivalent, key selection criteria include guaranteed 300 mA output current, ultra-low 38 μA quiescent current, stability with 1 μF ceramic output capacitors, and operation across –40°C to +125°C junction temperature range.
Technical Context
The MIC5501-1.8YMT-TZ implements a CMOS-based LDO architecture with active-high enable control and no internal pull-down on EN-requiring external logic-level drive to avoid floating states. It delivers regulated 1.8 V output with thermal shutdown and current-limit protection, and maintains regulation under no-load conditions.
Its design targets battery-powered systems where low ground current (38 μA typ.) and fast turn-on time (50–125 μs) are critical. The device achieves 60 dB PSRR at 1 kHz and supports stable operation with minimal 1 μF ceramic capacitors on both input and output, eliminating need for bulk capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% (±3% over –40°C to +125°C), enabling precise core voltage supply for 1.8 V logic ICs. |
| Max Output Current | 300 mA guaranteed, supporting moderate-power microcontrollers and sensors without thermal derating in compact layouts. |
| Dropout Voltage | 160 mV at 300 mA, allowing operation down to 1.96 V input-critical for single-cell Li-ion or Li-poly systems near end-of-discharge. |
| Quiescent Current | 38 μA typical, minimizing standby power loss in always-on subsystems like real-time clocks or sensor wake-up circuits. |
| Input Voltage Range | 2.5 V to 5.5 V, compatible with common 3.3 V and 5 V rails while tolerating transient overshoot up to 6 V absolute max. |
| PSRR | 60 dB at 1 kHz, suppressing ripple from noisy switchers or shared power domains feeding mixed-signal circuits. |
| Operating Temp | –40°C to +125°C junction range, qualified for industrial and automotive under-hood auxiliary power applications. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (MT), ePAD exposed heatsink pad requiring connection to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Supply Input | Accepts 2.5–5.5 V input; must be decoupled with ≥1 μF ceramic capacitor to GND for stability. |
| EN (Pin 3) | Enable Input | Active-high CMOS input; must be driven high (>1.2 V) to enable output-floating state is undefined and prohibited. |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 1.8 V; stable with ≥1 μF ceramic output capacitor; remains in regulation at zero load. |
| GND (Pin 2) | Ground Reference | Power and signal return path; connects to ePAD for thermal conduction and noise reduction. |
| ePAD | Exposed Heatsink Pad | Internally connected to GND; soldering to PCB ground plane reduces θJA by >30%, essential for 300 mA continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| No-load stability | Maintains regulation with 0 mA load-enables use in CMOS RAM keep-alive and always-on monitoring circuits without external bleed resistors. |
| Low-noise operation | 175 μVRMS output voltage noise (10 Hz–100 kHz), suitable for powering ADC references and RF front-end bias rails. |
| Fast enable response | 50–125 μs turn-on time with 1 μF output capacitor, supporting rapid power sequencing in multi-rail embedded systems. |
| Robust fault protection | Integrated thermal shutdown and foldback current limiting prevent damage during short-circuit or overload events. |
| Minimal external components | Stable with only two 1 μF X5R/X7R ceramic capacitors-reduces BOM count and PCB area versus legacy LDOs requiring larger or multiple caps. |
Applications
| Medical Wearables | GPS Tracking Modules |
|---|---|
Use Scenario: Continuous ECG sensing with Bluetooth LE transmission in wrist-worn health monitors. IC Role / Device Role / Timing Role: Primary 1.8 V supply for ultra-low-power MCU and analog front-end ASIC. Use Value: 38 μA quiescent current extends battery life beyond 7 days on coin cell; 1.0 mm × 1.0 mm footprint enables miniaturized form factor. | Use Scenario: Compact asset tracker using GNSS + cellular modem in logistics tags. IC Role / Device Role / Timing Role: Clean 1.8 V rail for GNSS baseband processor and RF synthesizer biasing. Use Value: 60 dB PSRR suppresses switching noise from cellular PA; 160 mV dropout preserves runtime during Li-ion voltage sag below 2.0 V. |
| Industrial Sensor Nodes | Smartphone Peripherals |
Use Scenario: Battery-powered vibration sensor node with LoRaWAN backhaul in factory environments. IC Role / Device Role / Timing Role: Stable 1.8 V supply for MEMS accelerometer and sub-GHz transceiver SoC. Use Value: –40°C to +125°C rating ensures reliability in uncontrolled ambient conditions; no-load stability avoids leakage-induced drift during sleep cycles. | Use Scenario: USB-C accessory dongle with HDMI/USB3.1 bridge IC requiring tight 1.8 V tolerance. IC Role / Device Role / Timing Role: Precision post-regulator for I/O interface logic powered from 3.3 V system rail. Use Value: ±2% output accuracy meets JEDEC JESD8-12B requirements for 1.8 V I/O; 300 mA headroom supports burst-mode data transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5501-1.8YM5-TR | Same electrical specs but in 5-lead SOT23-5 package (larger footprint, higher θJA = 253°C/W). | Suitable where board space allows larger package and thermal margin is less constrained. | Select when existing layout uses SOT23 footprints or manual assembly is preferred over DFN reflow. |
| Torex XC6206P182MR-G | 1.8 V, 300 mA, but higher 65 μA quiescent current and ±3% accuracy; no enable pin. | Lacks active enable control-requires external MOSFET for shutdown in always-off systems. | Choose only if enable functionality is unnecessary and cost is primary driver; not drop-in due to pinout and control differences. |
Compared with MIC5501-1.8YM5-TR, the MIC5501-1.8YMT-TZ saves >60% PCB area and improves thermal performance; versus XC6206P182MR-G, it adds programmable enable and tighter accuracy at lower IQ, making it superior for battery-sensitive, controllable power rails.
Availability
MIC5501-1.8YMT-TZ is available at Aetrix Electronics and suitable for medical wearables, GPS tracking modules, and industrial sensor nodes requiring stable component supply with full RoHS compliance and extended temperature support.
Supply support for MIC5501-1.8YMT-TZ 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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability and long-term product availability.
The MIC5501 family is designed as ultra-small-footprint, high-accuracy LDOs targeting portable and battery-operated applications where size, efficiency, and thermal performance are critical constraints.
FAQ
What is the maximum input voltage rating for the MIC5501-1.8YMT-TZ?
The MIC5501-1.8YMT-TZ has an absolute maximum input voltage of +6 V, but its specified operating input range is +2.5 V to +5.5 V. Exceeding 5.5 V may cause permanent damage even if within the absolute maximum rating, as functional operation is only guaranteed within the operating range per DS20006006B-page 3.
Does the MIC5501-1.8YMT-TZ include an internal pull-down resistor on the EN pin?
No, the MIC5501-1.8YMT-TZ does not include an internal pull-down resistor on the EN pin. As confirmed in Table 3-1 and Section 4.4 of the datasheet, only MIC5503 and MIC5504 variants feature this function. Leaving EN floating on MIC5501-1.8YMT-TZ may result in indeterminate output behavior and must be avoided.
Can the MIC5501-1.8YMT-TZ operate with zero load current?
Yes, the MIC5501-1.8YMT-TZ remains stable and in regulation with zero load current, as explicitly stated in Section 4.3 "No-Load Stability". This eliminates the need for external discharge resistors in applications like CMOS RAM keep-alive circuits where standby current must be minimized.
What is the thermal resistance (θJA) of the MIC5501-1.8YMT-TZ package?
The MIC5501-1.8YMT-TZ uses the 4-lead 1.0 mm × 1.0 mm Thin DFN (MT) package with a junction-to-ambient thermal resistance (θJA) of 250°C/W, as specified in DS20006006B-page 4. Performance improves significantly when the ePAD is soldered to a solid GND plane, reducing effective θJA in practical layouts.
Is the MIC5501-1.8YMT-TZ suitable for RF transmitter power supply applications?
No, the MIC5501-1.8YMT-TZ is explicitly stated as "not suitable for RF transmitter systems" in Section 4.0 of the datasheet (DS20006006B-page 10). Its PSRR and noise characteristics, while adequate for receiver biasing or digital logic, do not meet the stringent spectral purity requirements of RF power amplifier stages.
MIC5501-1.8YMT-TZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-TDFN (1x1)
MIC5501-1.8YMT-TZ FAQ
1.How can I place an order for MIC5501-1.8YMT-TZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5501-1.8YMT-TZ 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 MIC5501-1.8YMT-TZ reliable?
The price and inventory of MIC5501-1.8YMT-TZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5501-1.8YMT-TZ is usually 5 days.
3.What payment methods are accepted for MIC5501-1.8YMT-TZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5501-1.8YMT-TZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5501-1.8YMT-TZ?
MIC5501-1.8YMT-TZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5501-1.8YMT-TZ 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 MIC5501-1.8YMT-TZ?
For technical support, including MIC5501-1.8YMT-TZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5501-1.8YMT-TZ requirements.
6.How does Aetrix verify that MIC5501-1.8YMT-TZ is sourced from the original manufacturer or authorized distributors?
All MIC5501-1.8YMT-TZ 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 MIC5501-1.8YMT-TZ meets industry standards.
7.What is the process for return or replacement of MIC5501-1.8YMT-TZ?
All MIC5501-1.8YMT-TZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5501-1.8YMT-TZ, 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 MIC5501-1.8YMT-TZ part is unused and in its original packaging.
Return procedure for MIC5501-1.8YMT-TZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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