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Microchip Technology MIC5371-MMYMT-TR
- Part No.:
- MIC5371-MMYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC5371-MMYMT-TR.pdf
- Description:
- IC REG LINEAR 2.8V/2.8V 6TMLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC5371-MMYMT-TR from Micrel is a dual low-dropout linear regulator IC delivering two independent 150mA outputs at fixed 2.8V/2.8V, housed in a 6-pin 1.6mm × 1.6mm Thin MLF® package. It features ±2% initial output accuracy, 155mV dropout at full load, 32µA typical ground current per LDO, and integrated auto-discharge circuitry for rapid output capacitor discharge during shutdown - critical for power sequencing in portable camera modules and mobile baseband subsystems.
For engineers reviewing the MIC5371-MMYMT-TR datasheet, MIC5371-MMYMT-TR pinout, MIC5371-MMYMT-TR application, or MIC5371-MMYMT-TR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and confirmed alternative options with documented functional distinctions.
Technical Context
The MIC5371-MMYMT-TR integrates two CMOS-based LDO regulators sharing a common input (VIN) and ground (GND), each controlled by dedicated active-high enable inputs (EN1, EN2). Its architecture includes internal reference, error amplifiers, and pass transistors optimized for low-noise, high-PSRR operation across 2.5V–5.5V input range.
Unlike the MIC5370 variant, the MIC5371-MMYMT-TR incorporates an on-chip 30Ω NFET auto-discharge switch per output, activated only when both EN1 and EN2 are logic low - enabling fast, controlled VOUT1/VOUT2 ramp-down without external circuitry. Thermal shutdown and current-limit protection operate independently per regulator channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V / 2.8V - eliminates external feedback resistors; supports dual-core SoC I/O and memory rails requiring matched voltage domains. |
| Max Output Current | 150mA per LDO - sufficient to power image signal processors (ISPs), RF transceivers, or low-power microcontrollers without thermal derating in compact layouts. |
| Dropout Voltage | 155mV @ 150mA - enables stable regulation down to VIN = 2.95V, extending battery runtime in single-cell Li-ion (2.8V–4.2V) systems. |
| Ground Current | 32µA per LDO (typ.) - minimizes quiescent power loss during active operation; <1µA total in shutdown mode with both enables inactive. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from adjacent DC/DC converters, preserving analog sensor or audio signal integrity. |
| Auto-Discharge | 30Ω (typ.) NFET per output - discharges 1µF output caps in <50µs, preventing unintended wake-up or latch-up in sleep-mode sequences. |
| Stability | Guaranteed with 1µF ceramic output capacitors - reduces BOM count and PCB area vs. legacy LDOs requiring ≥10µF tantalum. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin MLF® (MT) with exposed thermal pad (internally connected to GND). RoHS-compliant, halogen-free mold compound, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Supply Input | Common input for both LDOs; must be decoupled with ≥1µF ceramic capacitor to GND to ensure stability and transient response. |
| 2 - GND | Ground Reference | Primary return path for both regulators and internal circuitry; connects directly to exposed thermal pad for optimal heat dissipation. |
| 3 - EN2 | Enable Input (LDO2) | Active-high digital control; drives LDO2 output ON/OFF independently; requires defined logic level - floating state prohibited. |
| 4 - EN1 | Enable Input (LDO1) | Active-high digital control; enables/disables LDO1 independently; shares same voltage threshold (1.2V min high, 0.2V max low) as EN2. |
| 5 - VOUT2 | LDO2 Output | Regulated 2.8V supply for secondary load; internally discharged via 30Ω NFET when EN2 = low and EN1 = low. |
| 6 - VOUT1 | LDO1 Output | Regulated 2.8V supply for primary load; auto-discharged identically to VOUT2 under dual-disable condition. |
Key Features
| Feature | Design Value |
|---|---|
| Independent Enable Control | EN1 and EN2 allow staggered power-up/down sequencing between two 2.8V domains - essential for avoiding backfeed or bus contention in multi-rail systems. |
| Auto-Discharge Circuitry | Integrated 30Ω discharge FET per output eliminates need for external bleed resistors, reducing component count and leakage path uncertainty during deep-sleep modes. |
| Low-Noise Operation | 200µVRMS output noise (10Hz–100kHz) enables clean power delivery to noise-sensitive analog blocks like camera ADCs or PLLs without added filtering. |
| Thermal & Current Protection | Per-LDO thermal shutdown and current limiting prevent damage during overload or short-circuit events - maintains system reliability without external supervision. |
| Small-Signal Stability | Stable with 1µF ceramic output capacitors across –40°C to +125°C - simplifies layout, avoids ESR dependency, and improves transient recovery vs. larger electrolytic solutions. |
Applications
| Camera Module Power Supply | Mobile Baseband Core Logic |
|---|---|
Use Scenario: Dual-rail power for CMOS image sensor and ISP in smartphone front/rear cameras. IC Role / Device Role / Timing Role: Provides tightly regulated, sequenced 2.8V supplies to sensor analog front-end and digital processing block. Use Value: Auto-discharge ensures rapid reset between capture frames; low PSRR preserves image SNR by rejecting PMIC switching noise. | Use Scenario: Powering ARM Cortex-A/M cores and associated cache SRAM in mobile application processors. IC Role / Device Role / Timing Role: Delivers matched 2.8V rails for core logic and I/O domains during dynamic voltage scaling transitions. Use Value: Independent enables support fine-grained power gating; 155mV dropout extends usable battery voltage range by >100mV. |
| GPS Receiver Front-End | Portable Medical Sensor Hub |
Use Scenario: Biasing GPS LNA and baseband ASIC in handheld navigation devices. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.8V to RF amplifier and mixed-signal converter stages. Use Value: 200µVRMS noise and 60dB PSRR prevent degradation of GPS C/N₀ ratio; 32µA quiescent current extends standby time. | Use Scenario: Powering optical heart-rate monitor (PPG) analog front-end and microcontroller in wearable health trackers. IC Role / Device Role / Timing Role: Regulates precision 2.8V for photodiode bias and ADC reference while supporting low-power sleep states. Use Value: Zero-off-mode current (<1µA) and fast turn-on (50µs) enable responsive wake-from-sleep without voltage droop or delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5370-MMYMT-TR | No auto-discharge circuit; identical pinout, output voltages, and electrical specs otherwise. | Not suitable where rapid output discharge is required - e.g., systems needing strict power sequencing or avoiding residual charge-induced glitches. | Select MIC5370-MMYMT-TR only if auto-discharge is unnecessary and cost minimization is prioritized. |
| TPL7407LPGEDR | Single 250mA LDO with integrated 7-channel high-side driver; no dual-output or auto-discharge capability. | Designed for LED/relay driving, not dual-rail regulation; lacks independent enables and matched 2.8V outputs. | Not functionally equivalent; consider only if system requires integrated driver functionality alongside basic regulation. |
Compared with MIC5370-MMYMT-TR, the MIC5371-MMYMT-TR adds critical auto-discharge without altering footprint or enable logic - making it the sole drop-in solution for designs requiring controlled output decay. The TPL7407LPGEDR serves a fundamentally different system role and cannot replace MIC5371-MMYMT-TR in dual-LDO applications.
Availability
MIC5371-MMYMT-TR is available at Aetrix Electronics and suitable for camera module power supply, mobile baseband core logic, and GPS receiver front-end applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC5371-MMYMT-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 semiconductor company specializing in power management, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC5371 belongs to Micrel's high-performance dual-LDO product line, designed specifically for space-constrained, battery-powered portable electronics requiring independent regulation, ultra-low quiescent current, and fast, controlled power sequencing.
FAQ
What is the maximum input voltage rating for MIC5371-MMYMT-TR?
The absolute maximum input voltage for MIC5371-MMYMT-TR is +6V, but the recommended operating range is +2.5V to +5.5V. Exceeding 5.5V risks permanent damage even if within absolute limits. This range supports single-cell Li-ion (2.8V–4.2V) and USB-powered (5V) applications without external regulation. Always verify VIN against the specific use case in the MIC5371-MMYMT-TR datasheet.
Does MIC5371-MMYMT-TR require external components for stability?
Yes - MIC5371-MMYMT-TR requires a minimum 1µF ceramic input capacitor from VIN to GND and a minimum 1µF ceramic output capacitor on each VOUT pin. These capacitors ensure loop stability, transient response, and PSRR performance. X5R or X7R dielectrics are recommended; Y5V types are not suitable due to excessive capacitance drift over temperature. No additional compensation components are needed.
How does the auto-discharge feature work in MIC5371-MMYMT-TR?
The auto-discharge feature in MIC5371-MMYMT-TR activates only when both EN1 and EN2 are logic low, connecting an internal ~30Ω NFET between each VOUT pin and GND. This rapidly discharges external output capacitors - typically within 50µs for a 1µF cap - eliminating residual voltage that could cause unintended device wake-up or latch-up. The MIC5371-MMYMT-TR datasheet confirms this behavior is exclusive to the MIC5371 family.
What is the thermal resistance (θJA) of MIC5371-MMYMT-TR?
The junction-to-ambient thermal resistance (θJA) for MIC5371-MMYMT-TR in its 1.6mm × 1.6mm Thin MLF® package is 90°C/W under standard JEDEC PCB conditions. This value assumes proper thermal pad soldering to a solid GND plane. In high-power scenarios (e.g., 150mA per LDO at 3.6V input), ambient temperature must be limited to ≤89.9°C to keep junction temperature below 125°C - a constraint explicitly calculated in the MIC5371-MMYMT-TR application notes.
Can MIC5371-MMYMT-TR be used in automotive applications?
MIC5371-MMYMT-TR is rated for –40°C to +125°C junction temperature and qualified for industrial-grade operation, but it is not AEC-Q200 qualified or specified for automotive use. Its datasheet contains no automotive qualification data, stress test results, or PPAP documentation. For automotive infotainment or ADAS subsystems, designers should select AEC-Q100-qualified alternatives - MIC5371-MMYMT-TR remains appropriate for industrial handhelds, medical wearables, and consumer portable electronics.
MIC5371-MMYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- 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):
- 0.31V @ 150mA, 0.31V @ 150mA
- Current - Output:
- 150mA, 150mA
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- 85 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:
- 6-TMLF® (1.6x1.6)
MIC5371-MMYMT-TR FAQ
1.How can I place an order for MIC5371-MMYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5371-MMYMT-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 MIC5371-MMYMT-TR reliable?
The price and inventory of MIC5371-MMYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5371-MMYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5371-MMYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5371-MMYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5371-MMYMT-TR?
MIC5371-MMYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5371-MMYMT-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 MIC5371-MMYMT-TR?
For technical support, including MIC5371-MMYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5371-MMYMT-TR requirements.
6.How does Aetrix verify that MIC5371-MMYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5371-MMYMT-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 MIC5371-MMYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5371-MMYMT-TR?
All MIC5371-MMYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5371-MMYMT-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 MIC5371-MMYMT-TR part is unused and in its original packaging.
Return procedure for MIC5371-MMYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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