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Microchip Technology MIC5398-P4YMX-TR
- Part No.:
- MIC5398-P4YMX-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
MIC5398-P4YMX-TR.pdf
- Description:
- IC REG LINEAR 1.2V/3V 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,398
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Product details
Overview
MIC5398-P4YMX-TR from Microchip Technology is a dual low-dropout linear regulator (LDO) with independent 300 mA outputs, fixed output voltages of 3.0 V and 1.2 V, ±2% output accuracy, and 160 mV dropout at full load. It features internal enable pull-down resistors on both EN1 and EN2 pins, operates from 2.5 V to 5.5 V input, and is optimized for space-constrained portable electronics requiring stable dual-rail power.
For engineers reviewing the MIC5398-P4YMX-TR datasheet, MIC5398-P4YMX-TR pinout, MIC5398-P4YMX-TR application, or MIC5398-P4YMX-TR equivalent, key selection criteria include dual-output voltage configuration, enable pull-down behavior, thermal shutdown protection, stability with 1 µF ceramic capacitors, and compatibility with ultra-thin 1.6 mm × 1.2 mm X2DFN packaging.
Technical Context
The MIC5398-P4YMX-TR integrates two independent LDO regulators sharing no internal bias or reference paths-enabling separate VIN1/VIN2 supplies and independent enable control. Its architecture supports zero-off-state shutdown current (0.05 µA typ.) and maintains regulation under no-load conditions.
Unlike MIC5397/MIC5399, it omits output discharge circuitry but includes 4 MΩ internal pull-down resistors on EN1/EN2 to ensure reliable disable during tri-state control. It delivers 60 dB PSRR at 1 kHz and 93 µVRMS output noise (10 Hz–100 kHz), with thermal shutdown triggered above +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V and 1.2 V (fixed, factory-set; enables dual-rail supply for core + I/O domains) |
| Max Output Current | 300 mA per channel (supports simultaneous full-load operation without derating) |
| Input Voltage Range | 2.5 V to 5.5 V (compatible with single-cell Li-ion, USB, and multi-cell alkaline inputs) |
| Dropout Voltage | 160 mV at 300 mA (enables high-efficiency regulation near battery end-of-life) |
| Output Accuracy | ±2% over –40°C to +125°C (ensures timing-critical logic and analog circuit compliance) |
| Quiescent Current | 37 µA per LDO (typ.) in active state; 0.05 µA (typ.) in shutdown (extends battery life in sleep modes) |
| PSRR | 60 dB at 1 kHz (suppresses switching noise from upstream DC/DC converters) |
| Capacitor Requirement | Stable with 1 µF ceramic output capacitors (reduces BOM count and PCB area vs. larger electrolytics) |
Pinout & Package
Package: 8-Lead Extra Thin DFN (X2DFN), 1.6 mm × 1.2 mm × 0.35 mm body, exposed thermal pad (ePad) connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | GND | Common ground reference for both regulators and thermal path via ePad |
| 2 | VOUT1 | 3.0 V regulated output; requires 1 µF ceramic capacitor to GND for stability |
| 3 | VOUT2 | 1.2 V regulated output; independent of VOUT1, supports low-voltage core rails |
| 5 | EN2 | Active-high enable for VOUT2; internal 4 MΩ pull-down ensures default OFF during MCU reset |
| 6 | VIN2 | Input supply for VOUT2; may differ from VIN1 to optimize source impedance or noise isolation |
| 7 | VIN1 | Input supply for VOUT1; decoupled separately to suppress cross-regulator coupling |
| 8 | EN1 | Active-high enable for VOUT1; internal 4 MΩ pull-down prevents unintended turn-on |
| EP | ePad | Exposed thermal pad; must be soldered to solid GND plane for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Independent enable pull-down | 4 MΩ internal resistor on EN1/EN2 ensures fail-safe disable without external components |
| No-load stability | Remains in regulation with zero output current-eliminates need for dummy loads in standby states |
| Low-noise operation | 93 µVRMS integrated noise (10 Hz–100 kHz) supports sensitive analog and RF front-end circuits |
| Thermal & current protection | Auto-shutdown at >+125°C junction temp and 400–900 mA current limit per channel prevent damage |
| Ultra-small footprint | 1.6 mm × 1.2 mm X2DFN package saves >60% board area vs. standard DFN-8 equivalents |
Applications
| Smartphone Power Management | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Dual-rail power for application processor (3.0 V I/O) and low-power sensor subsystem (1.2 V core). IC Role / Device Role / Timing Role: Primary dual-LDO supplying isolated, low-noise rails with independent enable sequencing. Use Value: Enables precise power domain control during deep-sleep modes while maintaining ±2% regulation across temperature. | Use Scenario: Battery-powered wearable ECG/PPG module requiring ultra-low quiescent current and stable analog supply. IC Role / Device Role / Timing Role: Main regulator delivering clean 1.2 V core voltage and 3.0 V analog front-end bias. Use Value: 37 µA typical ground current extends battery life; 1 µF capacitor stability reduces bill-of-materials cost. |
| Industrial Handheld Terminal | IoT Edge Node Controller |
Use Scenario: Ruggedized barcode scanner with LCD backlight (3.0 V) and ARM Cortex-M4 core (1.2 V). IC Role / Device Role / Timing Role: Dual-output LDO managing rail sequencing and brown-out immunity during battery swaps. Use Value: Internal enable pull-down prevents spurious wake-up during hot-plug events; 160 mV dropout sustains operation down to 2.5 V input. | Use Scenario: LPWAN node with sub-GHz radio (3.0 V) and ultra-low-power microcontroller (1.2 V). IC Role / Device Role / Timing Role: System-level power manager providing independently controllable, low-noise supplies. Use Value: 60 dB PSRR isolates radio receiver from digital switching noise; shutdown current <1 µA preserves battery for years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5396-P4YMX-TR | No internal enable pull-down; EN1/EN2 require external pull-down or active drive | Lacks fail-safe disable; unsuitable where tri-state control is used without external components | Select when external enable logic is already present and board space allows discrete pull-down resistors |
| MIC5399-GMYMX-TR | Includes both output discharge circuit and internal enable pull-down; 1.8 V / 2.8 V outputs | Provides auto-discharge for fast rail collapse; different voltage pairing limits direct substitution | Choose when rapid output discharge is required and 1.8 V/2.8 V rails match system needs |
Compared with MIC5396-P4YMX-TR, MIC5398-P4YMX-TR eliminates external pull-down components and simplifies enable interface design, while MIC5399-GMYMX-TR adds discharge functionality at the cost of non-matching output voltages-making MIC5398-P4YMX-TR optimal for 3.0 V/1.2 V systems needing robust tri-state safety.
Availability
MIC5398-P4YMX-TR is available at Aetrix Electronics and suitable for smartphone power management, portable medical devices, industrial handheld terminals, and IoT edge nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MIC5398-P4YMX-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
Microchip Technology Inc. is a leading provider of microcontrollers, analog, FPGA, and mixed-signal semiconductors, serving automotive, industrial, consumer, and communications markets.
The MIC539x family is designed specifically for ultra-compact, battery-powered portable electronics requiring dual, independently controlled, low-quiescent-current LDOs in sub-2 mm² packages.
FAQ
What are the fixed output voltages of the MIC5398-P4YMX-TR?
The MIC5398-P4YMX-TR provides factory-set output voltages of 3.0 V on VOUT1 and 1.2 V on VOUT2. These values are non-adjustable and defined by the "P4" voltage option code in the part number. Both outputs maintain ±2% accuracy across –40°C to +125°C ambient temperature and full load range, making MIC5398-P4YMX-TR suitable for precision dual-rail applications such as processor I/O and core supply domains.
Does the MIC5398-P4YMX-TR include an output discharge circuit?
No, the MIC5398-P4YMX-TR does not include an output discharge circuit. That feature is exclusive to MIC5397 and MIC5399 variants. MIC5398-P4YMX-TR instead implements internal 4 MΩ pull-down resistors on EN1 and EN2 to ensure reliable disable during tri-state conditions-but leaves VOUT1 and VOUT2 floating when disabled. Therefore, external discharge paths must be added if rapid rail collapse is required in your design using MIC5398-P4YMX-TR.
What package type is used for the MIC5398-P4YMX-TR?
The MIC5398-P4YMX-TR uses an 8-lead Extra Thin DFN (X2DFN) package measuring 1.6 mm × 1.2 mm × 0.35 mm with an exposed thermal pad (ePad). This package is Pb-free, RoHS-compliant, and optimized for high-density portable layouts. The "MX" suffix in MIC5398-P4YMX-TR explicitly denotes the X2DFN variant, distinguishing it from the thicker UDFN ("MT") version-critical for thermal and mechanical integration in thin-profile designs using MIC5398-P4YMX-TR.
Can the MIC5398-P4YMX-TR operate with only one output enabled?
Yes, the MIC5398-P4YMX-TR supports independent enable control: EN1 controls VOUT1 and EN2 controls VOUT2. Either output can be enabled or disabled without affecting the other. When one LDO is disabled, its ground current drops to ~0.05 µA (shutdown mode), while the active LDO continues normal regulation with full 300 mA capability and 37 µA quiescent current. This flexibility enables dynamic power gating in systems using MIC5398-P4YMX-TR for multi-mode operation.
What is the minimum output capacitor required for stability with the MIC5398-P4YMX-TR?
The MIC5398-P4YMX-TR requires a minimum 1 µF ceramic output capacitor on each VOUT pin for guaranteed stability across all operating conditions. X5R or X7R dielectrics are recommended; Y5V and Z5U types are discouraged due to excessive capacitance loss over temperature. Larger capacitors do not improve stability or transient response meaningfully-the design is optimized for 1 µF, and using MIC5398-P4YMX-TR with compliant 1 µF ceramics eliminates need for external compensation or damping networks.
MIC5398-P4YMX-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V, 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 300mA, 0.38V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 130 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:
- 8-DFN (1.2x1.6)
MIC5398-P4YMX-TR FAQ
1.How can I place an order for MIC5398-P4YMX-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5398-P4YMX-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 MIC5398-P4YMX-TR reliable?
The price and inventory of MIC5398-P4YMX-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5398-P4YMX-TR is usually 5 days.
3.What payment methods are accepted for MIC5398-P4YMX-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5398-P4YMX-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5398-P4YMX-TR?
MIC5398-P4YMX-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5398-P4YMX-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 MIC5398-P4YMX-TR?
For technical support, including MIC5398-P4YMX-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5398-P4YMX-TR requirements.
6.How does Aetrix verify that MIC5398-P4YMX-TR is sourced from the original manufacturer or authorized distributors?
All MIC5398-P4YMX-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 MIC5398-P4YMX-TR meets industry standards.
7.What is the process for return or replacement of MIC5398-P4YMX-TR?
All MIC5398-P4YMX-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5398-P4YMX-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 MIC5398-P4YMX-TR part is unused and in its original packaging.
Return procedure for MIC5398-P4YMX-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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