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Microchip Technology MIC5502-1.8YMT-TZ
- Part No.:
- MIC5502-1.8YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5502-1.8YMT-TZ.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,437
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Product details
Overview
MIC5502-1.8YMT-TZ from Microchip Technology is a 300 mA, fixed 1.8 V output low-dropout linear regulator (LDO) in a 4-lead 1.0 mm × 1.0 mm thin DFN package. It operates from 2.5 V to 5.5 V input, delivers ±2% output accuracy over –40°C to +125°C, features 160 mV dropout at full load, and includes auto-discharge functionality for rapid output voltage decay during shutdown - ideal for power sequencing in portable medical devices and battery-powered GPS modules.
For engineers reviewing the MIC5502-1.8YMT-TZ datasheet, MIC5502-1.8YMT-TZ pinout, MIC5502-1.8YMT-TZ application, or MIC5502-1.8YMT-TZ equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world use cases aligned with Microchip's DS20006006B documentation.
Technical Context
The MIC5502-1.8YMT-TZ implements a CMOS-based LDO architecture with active-high enable control and integrated auto-discharge NFET (25 Ω typical) activated when EN is low. Its internal reference and error amplifier maintain regulation across load currents up to 300 mA while sustaining stability with only 1 μF ceramic output capacitance.
Designed for ultra-low quiescent current operation (38 μA typical), it supports zero-off-mode shutdown (IGND(SHDN) ≤ 1 μA) and incorporates thermal shutdown and foldback current limiting. The device is rated for –40°C to +125°C junction temperature and is not suitable for RF transmitter systems per official specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over –40°C to +125°C - ensures stable core logic supply for 1.8 V microcontrollers and sensors. |
| Input Voltage Range | 2.5 V to 5.5 V - compatible with single-cell Li-ion, Li-poly, and 3.3 V/5 V system rails. |
| Max Output Current | 300 mA guaranteed - sufficient for powering PMIC subsystems, display drivers, or sensor hubs. |
| Dropout Voltage | 160 mV at 300 mA - enables >95% efficiency at 1.8 V output with 2.5 V input (e.g., 2.5 V → 1.8 V). |
| Quiescent Current | 38 μA typical - extends battery life in always-on monitoring applications such as wearable health sensors. |
| Auto-Discharge | 25 Ω internal NFET on VOUT when EN = low - discharges external capacitors within microseconds, preventing residual voltage hold-up. |
| Enable Threshold | Logic-high ≥1.2 V, logic-low ≤0.2 V - compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
| Thermal Protection | Integrated thermal shutdown - prevents damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (TDFN-4, MT suffix), exposed thermal pad (ePAD) 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; requires 1 μF ceramic decoupling capacitor to GND for stability. |
| EN (Pin 3) | Active-High Enable | Drives ON/OFF state; must be pulled high ≥1.2 V to enable; floating prohibited for MIC5502 (no internal pull-down). |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 1.8 V; auto-discharge path (25 Ω) engages when EN = low to rapidly drain external capacitance. |
| GND (Pin 2) | Ground Reference | Power and signal return; ePAD must be soldered to GND plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.0 mm × 1.0 mm TDFN package - saves board space in compact portable electronics like hearing aids and IoT edge nodes. |
| Auto-discharge circuit | 25 Ω internal NFET on VOUT - eliminates need for external discharge resistor, reducing BOM count and enabling fast power-down sequencing. |
| No-load stability | Remains in regulation with zero load - critical for maintaining backup voltage in CMOS RAM keep-alive circuits. |
| Low-noise operation | 175 μVRMS output noise (10 Hz–100 kHz) - suitable for noise-sensitive analog front-ends and precision ADC references. |
| Robust protection | Thermal shutdown + current limit (400–900 mA) - prevents latch-up or destruction under short-circuit or overtemperature conditions. |
Applications
| Medical Sensor Node | Portable GPS Module |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE radio and 1.8 V ASIC. IC Role / Device Role / Timing Role: Primary 1.8 V power rail for analog sensor interface and digital baseband processor. Use Value: Auto-discharge ensures clean power-down of sensor biasing circuitry, eliminating measurement artifacts during sleep/wake transitions. | Use Scenario: Handheld GPS navigation unit powered by single-cell Li-ion battery (2.8–4.2 V). IC Role / Device Role / Timing Role: Stable 1.8 V supply for GNSS baseband IC and flash memory I/O interface. Use Value: 160 mV dropout enables >1.8 V output down to 2.5 V input, extending usable battery range by ~15 minutes at end-of-discharge. |
| Smartphone Camera Module | Industrial Handheld Scanner |
Use Scenario: Dual-lens smartphone camera module with image signal processor (ISP) and autofocus actuator driver. IC Role / Device Role / Timing Role: Dedicated 1.8 V LDO for ISP core logic and MIPI CSI-2 interface termination. Use Value: ±2% output accuracy maintains timing margin for high-speed serial links; 38 μA quiescent current minimizes standby power draw. | Use Scenario: Ruggedized barcode scanner with 1.8 V FPGA configuration bank and laser diode driver logic. IC Role / Device Role / Timing Role: Power source for FPGA I/O banks and control logic during cold-start and intermittent operation. Use Value: No-load stability prevents brownout during FPGA configuration pauses; thermal shutdown protects against overheating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5504-1.8YMT-TR | Includes both auto-discharge and internal EN pull-down (4 MΩ); same 1.8 V output, 300 mA rating, and DFN package. | Suitable where EN signal may float during processor boot; eliminates need for external pull-down resistor. | Select MIC5504-1.8YMT-TR if system lacks controlled EN drive or requires guaranteed disable on unconnected control lines. |
| Torex XC6219B182MR-G | 1.8 V, 300 mA, SOT-25 package; no auto-discharge; 25 μA IQ; ±2% accuracy; 150 mV dropout at 300 mA. | Lacks auto-discharge; requires external discharge path; smaller thermal resistance but larger footprint than DFN. | Choose XC6219B182MR-G only if board layout allows SOT-25 and auto-discharge is unnecessary or implemented externally. |
Compared with MIC5504-1.8YMT-TR, the MIC5502-1.8YMT-TZ offers identical regulation and discharge performance but requires an externally driven EN signal; versus XC6219B182MR-G, it provides faster power-down sequencing and superior thermal performance in half the area, at the cost of slightly higher quiescent current.
Availability
MIC5502-1.8YMT-TZ is available at Aetrix Electronics and suitable for portable medical devices, GPS navigation units, smartphone camera modules, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5502-1.8YMT-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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with global design, manufacturing, and support infrastructure.
The MIC5502 family is part of Microchip's ultra-low-power LDO portfolio designed specifically for space-constrained, battery-operated portable electronics requiring precise voltage regulation, fast transient response, and intelligent power sequencing.
FAQ
What is the maximum input voltage rating for the MIC5502-1.8YMT-TZ?
The MIC5502-1.8YMT-TZ has an absolute maximum input voltage rating 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 or unpredictable behavior, even if below the 6 V stress limit. Always operate within the 2.5–5.5 V range for reliable performance of the MIC5502-1.8YMT-TZ.
Does the MIC5502-1.8YMT-TZ require an external pull-down resistor on the EN pin?
No - the MIC5502-1.8YMT-TZ does not include an internal EN pull-down resistor. Unlike MIC5503/MIC5504 variants, the EN pin must be actively driven high to enable and low to disable; leaving it floating may result in indeterminate output states. An external pull-down is required only if system-level control cannot guarantee a defined logic level during boot or reset - a key distinction for the MIC5502-1.8YMT-TZ.
Can the MIC5502-1.8YMT-TZ be used with ceramic output capacitors smaller than 1 µF?
No - the MIC5502-1.8YMT-TZ is optimized for stability with ≥1 µF ceramic output capacitance (X5R/X7R dielectric). Using smaller values risks oscillation or poor transient response. The datasheet explicitly specifies 1 µF as the minimum; performance is not characterized or guaranteed below that value for the MIC5502-1.8YMT-TZ.
What is the thermal resistance (θJA) of the MIC5502-1.8YMT-TZ in its DFN package?
The MIC5502-1.8YMT-TZ in the 4-lead 1.0 mm × 1.0 mm Thin DFN (MT) package has a junction-to-ambient thermal resistance (θJA) of 250°C/W under standard JEDEC test conditions. This value assumes proper PCB layout with the ePAD soldered to a solid GND plane; inadequate copper area increases θJA and reduces safe operating current.
Is the MIC5502-1.8YMT-TZ suitable for RF transmitter applications?
No - the MIC5502-1.8YMT-TZ is explicitly stated as "not suitable for RF transmitter systems" in Microchip's DS20006006B datasheet. Its PSRR (60 dB at 1 kHz) and noise profile (175 μVRMS) are insufficient for sensitive RF PA biasing; dedicated RF-grade LDOs with higher PSRR (>70 dB) and lower noise (<10 μVRMS) are recommended instead of the MIC5502-1.8YMT-TZ.
MIC5502-1.8YMT-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)
MIC5502-1.8YMT-TZ FAQ
1.How can I place an order for MIC5502-1.8YMT-TZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5502-1.8YMT-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 MIC5502-1.8YMT-TZ reliable?
The price and inventory of MIC5502-1.8YMT-TZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5502-1.8YMT-TZ is usually 5 days.
3.What payment methods are accepted for MIC5502-1.8YMT-TZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5502-1.8YMT-TZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5502-1.8YMT-TZ?
MIC5502-1.8YMT-TZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5502-1.8YMT-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 MIC5502-1.8YMT-TZ?
For technical support, including MIC5502-1.8YMT-TZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5502-1.8YMT-TZ requirements.
6.How does Aetrix verify that MIC5502-1.8YMT-TZ is sourced from the original manufacturer or authorized distributors?
All MIC5502-1.8YMT-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 MIC5502-1.8YMT-TZ meets industry standards.
7.What is the process for return or replacement of MIC5502-1.8YMT-TZ?
All MIC5502-1.8YMT-TZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5502-1.8YMT-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 MIC5502-1.8YMT-TZ part is unused and in its original packaging.
Return procedure for MIC5502-1.8YMT-TZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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