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Microchip Technology MIC5399-MMYMT-T5
- Part No.:
- MIC5399-MMYMT-T5
- Manufacturer:
- Microchip Technology
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
MIC5399-MMYMT-T5.pdf
- Description:
- IC REG LINEAR 2.8V/2.8V 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,231
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Product details
Overview
MIC5399-MMYMT-T5 from Microchip Technology is a dual-output, low-power LDO voltage regulator delivering two independent 300 mA outputs at fixed 2.8 V each, with ±2% output accuracy, 160 mV dropout at full load, and stable operation using only 1 µF ceramic output capacitors. It serves as a compact, high-efficiency power solution for space-constrained portable electronics requiring dual rail generation from a single 2.5–5.5 V input.
For engineers reviewing the MIC5399-MMYMT-T5 datasheet, MIC5399-MMYMT-T5 pinout, MIC5399-MMYMT-T5 application, or MIC5399-MMYMT-T5 equivalent, key selection considerations include its dual-channel discharge capability, internal enable pull-down resistors, ultra-thin 1.6 mm × 1.2 mm X2DFN package, and guaranteed performance across –40°C to +125°C junction temperature.
Technical Context
The MIC5399-MMYMT-T5 integrates two fully independent LDO regulators sharing only ground and thermal paths, each with active-high enable control and dedicated input/output pins. Its architecture supports independent power inputs (VIN1/VIN2), enabling optimized source selection per channel-e.g., battery vs. USB supply-to maximize system efficiency.
It features an auto-discharge circuit (25 Ω NFET) activated on disable for both outputs and an internal 4 MΩ enable pull-down resistor on EN1/EN2, ensuring reliable off-state behavior without external components. Thermal shutdown and current-limit protection are implemented per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V per channel - eliminates external feedback network, simplifies layout and BOM. |
| Max Output Current | 300 mA per LDO - supports moderate-power peripherals like sensors, RF front-ends, or MCU cores. |
| Dropout Voltage | 160 mV at 300 mA - enables regulation down to 2.96 V input, extending battery runtime in 3.0 V systems. |
| Accuracy | ±2% over –40°C to +125°C - ensures consistent voltage delivery across industrial temperature range. |
| Quiescent Current | 37 µA per LDO (typ.) - minimizes standby power loss in always-on subsystems. |
| PSRR | 60 dB at 1 kHz - suppresses low-frequency ripple from noisy DC-DC converters or shared input rails. |
| Shutdown Current | 0.05 µA (typ.) - near-zero leakage during deep sleep, critical for battery longevity. |
Pinout & Package
Package: 8-Lead Extra Thin DFN (X2DFN), 1.6 mm × 1.2 mm × 0.35 mm body, exposed thermal pad (ePad) - optimized for minimal PCB area and enhanced thermal performance in thin-profile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | GND | Common analog/digital ground reference for both LDOs; must be connected to PCB ground plane via ePad and vias. |
| 2 | VOUT1 | Regulated 2.8 V output for Channel 1; requires ≥1 µF ceramic capacitor to GND for stability. |
| 3 | VOUT2 | Regulated 2.8 V output for Channel 2; independently regulated, supports separate load switching. |
| 5 | EN2 | Active-high enable for Channel 2; internal 4 MΩ pull-down ensures OFF when floating - no external resistor needed. |
| 6 | VIN2 | Input supply for Channel 2; accepts 2.5–5.5 V; decoupling capacitor required. |
| 7 | VIN1 | Input supply for Channel 1; electrically isolated from VIN2 - enables dual-input flexibility (e.g., battery + PMIC). |
| 8 | EN1 | Active-high enable for Channel 1; same internal pull-down as EN2 for robust tri-state handling. |
| EP | ePad | Exposed thermal pad - must be soldered to solid GND copper area for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Dual auto-discharge | 25 Ω internal NFET per output discharges capacitors on disable - prevents residual voltage hold-up in sequencing-critical systems. |
| Internal enable pull-down | 4 MΩ resistor on EN1/EN2 guarantees OFF state during MCU reset or unpowered control lines - eliminates need for external pull-downs. |
| Ultra-thin X2DFN package | 1.6 mm × 1.2 mm footprint with 0.35 mm height - fits into <2 mm² board area, ideal for wearables and slim mobile modules. |
| Stable with 1 µF ceramic caps | No minimum ESR requirement - allows use of small, low-cost, high-reliability X5R/X7R 0402 capacitors without stability risk. |
| Wide input range | 2.5 V to 5.5 V operation - compatible with Li-ion, Li-Po, USB, and boosted single-cell supplies without external pre-regulation. |
Applications
| Smartphone Baseband Power | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Dual-rail powering of baseband processor (2.8 V core) and RF transceiver (2.8 V I/O) from shared battery rail. IC Role / Device Role / Timing Role: Dual LDO providing independent, low-noise, sequenced 2.8 V supplies with fast turn-on/turn-off for power gating. Use Value: Enables simultaneous power-up/down of co-located ICs while minimizing cross-talk and extending battery life via ultra-low quiescent current. | Use Scenario: Compact wearable device integrating ECG, SpO₂, and BLE radio, all requiring clean 2.8 V bias. IC Role / Device Role / Timing Role: Single-package dual LDO delivering matched, accurate 2.8 V rails with auto-discharge to meet medical-grade power sequencing requirements. Use Value: Eliminates need for two discrete LDOs and associated passives, reducing BOM count by >5 parts and saving >3 mm² PCB area. |
| Industrial Handheld Scanner | IoT Edge Node Controller |
Use Scenario: Powering laser driver (2.8 V analog) and microcontroller (2.8 V digital) in battery-operated barcode scanner. IC Role / Device Role / Timing Role: Dual LDO with independent enables allowing dynamic power cycling of laser subsystem without affecting MCU operation. Use Value: Reduces average system current by 37 µA per enabled channel during idle, directly extending scan-cycle battery life. | Use Scenario: Low-power edge node with sensor array and sub-GHz radio, operating in intermittent wake/sleep cycles. IC Role / Device Role / Timing Role: Dual LDO supplying 2.8 V to sensor interface and radio IC, with zero-current shutdown and fast 50 µs turn-on for responsive wake-up. Use Value: Achieves <0.1 µA total system standby current when both channels disabled - meets multi-year battery life targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5399-GMYMX-T5 | Same package and features, but outputs 1.8 V / 2.8 V - mismatched dual rails instead of matched 2.8 V / 2.8 V. | Suitable for mixed-voltage systems (e.g., 1.8 V logic + 2.8 V analog), not for dual 2.8 V loads. | Select only if asymmetric voltage rails are required; otherwise, MIC5399-MMYMT-T5 provides exact match for dual 2.8 V needs. |
| TPL7407LDR | 7-channel 150 mA sink driver (not LDO); no voltage regulation, no enable pull-down, no auto-discharge. | Designed for LED/relay driving, not precision voltage regulation - functionally incompatible. | Not a functional alternative; included only as common search result - avoid for LDO replacement. |
Compared with MIC5399-GMYMX-T5, the MIC5399-MMYMT-T5 delivers identical dual-channel discharge and enable pull-down functionality but provides matched 2.8 V outputs essential for symmetric dual-load applications, whereas TPL7407LDR lacks regulation entirely and cannot substitute for voltage stabilization.
Availability
MIC5399-MMYMT-T5 is available at Aetrix Electronics and suitable for smartphone baseband power, portable medical sensor hubs, and industrial handheld scanners requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MIC5399-MMYMT-T5 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, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with integrated silicon and development tools.
The MIC5399 family is part of Microchip's precision low-dropout regulator product line, designed specifically for space- and power-constrained portable electronics needing dual, independent, high-accuracy voltage rails in ultra-small packages.
FAQ
What output voltages does the MIC5399-MMYMT-T5 provide?
The MIC5399-MMYMT-T5 provides two fixed, identical output voltages of 2.8 V each - one per channel. This is confirmed by Microchip's Product Identification System where "MM" denotes 2.8 V / 2.8 V, and the datasheet specifies no external feedback, confirming factory-trimmed fixed outputs. The MIC5399-MMYMT-T5 does not support adjustable or asymmetric voltages.
Does the MIC5399-MMYMT-T5 include auto-discharge and enable pull-down features?
Yes, the MIC5399-MMYMT-T5 includes both auto-discharge and internal enable pull-down features. As a MIC5399 variant, it integrates a 25 Ω NFET discharge path per output (activated when EN is low) and a 4 MΩ internal pull-down resistor on both EN1 and EN2 pins - explicitly documented in Section 4.4 and Table 3-1 of the DS20006264C datasheet. The MIC5399-MMYMT-T5 relies on these features for robust power sequencing.
What package type and dimensions does the MIC5399-MMYMT-T5 use?
The MIC5399-MMYMT-T5 uses the 8-Lead Extremely Thin DFN (X2DFN) package, measuring 1.6 mm × 1.2 mm × 0.35 mm with an exposed thermal pad (ePad). This is confirmed by the "MX" suffix in the part number and detailed in DS20006264C pages 17–19, including land pattern recommendations and mechanical drawings. The MIC5399-MMYMT-T5 is not offered in the thicker UDFN ("MT") variant.
What is the maximum input voltage rating for the MIC5399-MMYMT-T5?
The absolute maximum input voltage for the MIC5399-MMYMT-T5 is +6 V on VIN1 or VIN2, as specified in the Absolute Maximum Ratings table (DS20006264C, page 3). However, the recommended operating range is +2.5 V to +5.5 V - exceeding 5.5 V risks permanent damage even briefly. The MIC5399-MMYMT-T5 must be operated within this 2.5–5.5 V window for guaranteed functionality and reliability.
Can the MIC5399-MMYMT-T5 operate with no load on either output?
Yes, the MIC5399-MMYMT-T5 remains stable and in regulation with no load on either output - a feature explicitly called out in Section 4.3 "No-Load Stability" of the datasheet. Unlike many LDOs requiring minimum load current, the MIC5399-MMYMT-T5 maintains regulation from 0 mA to 300 mA per channel, enabling use in intermittently active subsystems without external dummy loads.
MIC5399-MMYMT-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V, 2.8V
- 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-TDFN (1.2x1.6)
MIC5399-MMYMT-T5 FAQ
1.How can I place an order for MIC5399-MMYMT-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5399-MMYMT-T5 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 MIC5399-MMYMT-T5 reliable?
The price and inventory of MIC5399-MMYMT-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5399-MMYMT-T5 is usually 5 days.
3.What payment methods are accepted for MIC5399-MMYMT-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5399-MMYMT-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5399-MMYMT-T5?
MIC5399-MMYMT-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5399-MMYMT-T5 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 MIC5399-MMYMT-T5?
For technical support, including MIC5399-MMYMT-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5399-MMYMT-T5 requirements.
6.How does Aetrix verify that MIC5399-MMYMT-T5 is sourced from the original manufacturer or authorized distributors?
All MIC5399-MMYMT-T5 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 MIC5399-MMYMT-T5 meets industry standards.
7.What is the process for return or replacement of MIC5399-MMYMT-T5?
All MIC5399-MMYMT-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC5399-MMYMT-T5, 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 MIC5399-MMYMT-T5 part is unused and in its original packaging.
Return procedure for MIC5399-MMYMT-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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