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Microchip Technology MIC5371-MGYMT-TR
- Part No.:
- MIC5371-MGYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC5371-MGYMT-TR.pdf
- Description:
- IC REG LINEAR 1.8V/2.8V 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:5,880
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Product details
Overview
MIC5371-MGYMT-TR from Micrel is a dual low-dropout linear regulator IC delivering independent 2.8V and 1.8V outputs at up to 150mA each, featuring ±2% initial output accuracy, 155mV dropout at full load, and integrated auto-discharge circuitry for rapid output capacitor discharge during shutdown - ideal for multi-rail power sequencing in camera DSP and mobile baseband subsystems.
For engineers reviewing the MIC5371-MGYMT-TR datasheet, MIC5371-MGYMT-TR pinout, MIC5371-MGYMT-TR application, or MIC5371-MGYMT-TR equivalent, key selection criteria include dual-output voltage pairing (2.8V/1.8V), 6-pin 1.6mm × 1.6mm Thin MLF® package compatibility, independent active-high enable control, and auto-discharge functionality unique to the MIC5371 variant.
Technical Context
The MIC5371-MGYMT-TR integrates two fully independent CMOS-based LDO regulators sharing a common input but with separate EN1/EN2 controls and VOUT1/VOUT2 outputs. Each regulator employs internal bandgap reference and error amplifier feedback to maintain regulation across –40°C to +125°C junction temperature.
Unlike the MIC5370, the MIC5371-MGYMT-TR includes an internal 30Ω NFET discharge path per output activated when its respective enable pin is driven low - enabling controlled discharge of 1µF ceramic output capacitors without external circuitry. Ground current remains ≤32µA per enabled LDO under no-load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.8V (VOUT1) and 1.8V (VOUT2), fixed and non-adjustable - supports core/peripheral rail separation in portable SoC designs. |
| Max Output Current | 150mA per LDO - sufficient for powering digital signal processors, camera modules, and RF transceivers. |
| Dropout Voltage | 155mV at 150mA - enables operation with only 300mV headroom above 2.8V output, critical for battery-powered systems. |
| Output Accuracy | ±2% initial tolerance - ensures stable logic-level compliance for 1.8V I/O and 2.8V analog subsystems. |
| Quiescent Current | 32µA per enabled LDO - minimizes standby power in always-on sensor or memory retention circuits. |
| Auto-Discharge | 30Ω internal NFET per output - discharges 1µF output caps in <1ms when disabled, preventing residual voltage hold-up. |
| PSRR | 60dB at 1kHz - suppresses switching noise from upstream DC-DC converters feeding VIN. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), Li-polymer, or regulated 3.3V/5V system rails. |
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; requires 1µF ceramic bypass capacitor to GND for stability. |
| 2 - GND | Ground Reference | Power and signal ground; connects internally to exposed heatsink pad for thermal dissipation. |
| 3 - EN2 | Enable Input (LDO2) | Active-high logic control (VIH ≥ 1.2V); must not float - ties to GND or host GPIO to disable 1.8V rail. |
| 4 - EN1 | Enable Input (LDO1) | Active-high logic control (VIH ≥ 1.2V); independent of EN2 - enables precise power sequencing of 2.8V rail. |
| 5 - VOUT2 | LDO2 Output | Regulated 1.8V supply; auto-discharged via internal 30Ω FET when EN2 = low. |
| 6 - VOUT1 | LDO1 Output | Regulated 2.8V supply; auto-discharged via internal 30Ω FET when EN1 = low. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 allow staggered power-up/down sequencing - essential for avoiding back-powering in multi-voltage SoC interfaces. |
| Auto-discharge circuitry | 30Ω internal NFET per output actively pulls VOUT to GND during disable - eliminates need for external bleed resistors and saves PCB area. |
| Stable with 1µF ceramic capacitors | Eliminates requirement for large bulk capacitance - reduces BOM cost and footprint in space-constrained mobile modules. |
| Thermal and current protection | Integrated thermal shutdown and 200–550mA current limiting per LDO - prevents damage during short-circuit or overload events. |
| Low-noise operation | 200µVRMS output noise (10Hz–100kHz) - suitable for noise-sensitive analog blocks like ADC references or PLL supplies. |
Applications
| Camera DSP Power Supply | Mobile Baseband Core Logic |
|---|---|
Use Scenario: Powers image signal processor (ISP) and CMOS image sensor interface in smartphone camera modules. IC Role / Device Role / Timing Role: Provides clean, sequenced 2.8V (analog front-end) and 1.8V (digital core) rails with fast turn-on (<125µs) and auto-discharge on sleep entry. Use Value: Prevents latch-up during mode transitions by eliminating residual 1.8V on VOUT2, ensuring reliable ISP reset and low-power state entry. | Use Scenario: Supplies core voltage (1.8V) and I/O voltage (2.8V) to cellular baseband processors in 3G/4G handsets. IC Role / Device Role / Timing Role: Delivers tightly regulated dual-rail power with independent enable control - matches processor power-state transitions (e.g., ARM core sleep vs. modem wake). Use Value: Enables dynamic voltage scaling support via separate EN1/EN2 control, reducing system-wide leakage current during idle periods. |
| GPS Receiver Module | Portable Media Player (PMP) Audio Codec |
Use Scenario: Powers GPS baseband IC and RF front-end in compact navigation devices. IC Role / Device Role / Timing Role: Supplies 2.8V to GPS RF section and 1.8V to digital correlator/logic; auto-discharge clears VOUT2 before cold start to avoid false lock. Use Value: Ensures deterministic GPS acquisition time by eliminating floating 1.8V rail that could bias internal comparators during cold boot. | Use Scenario: Powers stereo audio codec and DAC in battery-operated PMPs. IC Role / Device Role / Timing Role: Delivers low-noise 1.8V digital core supply and 2.8V analog AVDD rail; PSRR >60dB suppresses DC-DC ripple from system PMIC. Use Value: Reduces audible noise floor in headphone output by minimizing supply-induced modulation of DAC reference voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70248PWPR | Fixed 2.5V/3.3V outputs; no auto-discharge; 250mA per channel; larger 20-pin TSSOP package. | Designed for general-purpose dual-rail microcontroller systems - lacks fast discharge needed for mobile sleep modes. | Select when higher current or wider input range (2.7–6V) is required, and board space allows larger package. |
| RT9013-2818GJ6 | 2.8V/1.8V outputs; no auto-discharge; 300mA per channel; 6-pin DFN 1.6×1.6mm; 2.5–5.5V input. | Optimized for high-current portable apps but requires external discharge circuitry for sleep-mode compliance. | Choose if peak load exceeds 150mA per rail and auto-discharge is implemented externally via GPIO-controlled FET. |
Compared with TPS70248PWPR and RT9013-2818GJ6, the MIC5371-MGYMT-TR uniquely integrates matched 2.8V/1.8V outputs with per-rail auto-discharge in the same compact 1.6mm × 1.6mm footprint - simplifying design for battery-powered devices requiring rapid, deterministic power-state transitions.
Availability
MIC5371-MGYMT-TR is available at Aetrix Electronics and suitable for camera modules, mobile baseband subsystems, and GPS receiver designs requiring stable component supply, consistent dual-rail voltage pairing, and guaranteed auto-discharge behavior.
Supply support for MIC5371-MGYMT-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-MGYMT-TR belongs to Micrel's high-performance dual-LDO family designed specifically for space-constrained, battery-powered portable electronics requiring precision dual-rail regulation and controlled power-down sequencing.
FAQ
What output voltages does the MIC5371-MGYMT-TR provide?
The MIC5371-MGYMT-TR provides fixed 2.8V on VOUT1 and 1.8V on VOUT2. These values are factory-trimmed and non-adjustable. The 2.8V rail is typically used for analog peripherals or I/O interfaces, while the 1.8V rail powers digital cores such as DSPs or baseband processors. Both outputs maintain ±2% initial accuracy over temperature and load.
Does the MIC5371-MGYMT-TR support independent enable control for each LDO?
Yes, the MIC5371-MGYMT-TR features two independent active-high enable pins: EN1 controls LDO1 (2.8V output) and EN2 controls LDO2 (1.8V output). Each pin requires VIH ≥ 1.2V to activate its respective regulator and must never be left floating. This allows precise power sequencing - for example, enabling VOUT1 before VOUT2 to prevent back-powering in mixed-voltage SoC interfaces.
What is the purpose of the auto-discharge function in the MIC5371-MGYMT-TR?
The auto-discharge function in the MIC5371-MGYMT-TR activates an internal 30Ω NFET between each output and GND when its corresponding enable pin is driven low. This rapidly discharges external 1µF ceramic output capacitors - clearing residual voltage in under 1ms. It eliminates the need for external bleed resistors and ensures deterministic power-down behavior required in mobile sleep modes and camera module reset sequences.
Can the MIC5371-MGYMT-TR operate with ceramic output capacitors smaller than 1µF?
No - the MIC5371-MGYMT-TR is optimized for stability with ≥1µF X5R or X7R ceramic output capacitors. Using smaller values risks oscillation due to insufficient phase margin. The datasheet specifies 1µF as the minimum value for guaranteed stability across all operating conditions, including temperature extremes and load transients. Larger values do not degrade performance but offer no significant improvement in transient response.
What thermal limitations apply to the MIC5371-MGYMT-TR in a 150mA dual-load configuration?
At 150mA per LDO with VIN = 3.6V, VOUT1 = 2.8V, and VOUT2 = 1.8V, the MIC5371-MGYMT-TR dissipates approximately 0.39W. With θJA = 90°C/W and TJ(max) = 125°C, the maximum ambient temperature is ~89.9°C for a standard 1.6mm × 1.6mm layout. Exceeding this requires improved PCB copper pour or forced airflow. Thermal shutdown activates if junction temperature exceeds 125°C, protecting the device during sustained overload.
MIC5371-MGYMT-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):
- 1.8V, 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-MGYMT-TR FAQ
1.How can I place an order for MIC5371-MGYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5371-MGYMT-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-MGYMT-TR reliable?
The price and inventory of MIC5371-MGYMT-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-MGYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5371-MGYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5371-MGYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5371-MGYMT-TR?
MIC5371-MGYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5371-MGYMT-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-MGYMT-TR?
For technical support, including MIC5371-MGYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5371-MGYMT-TR requirements.
6.How does Aetrix verify that MIC5371-MGYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5371-MGYMT-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-MGYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5371-MGYMT-TR?
All MIC5371-MGYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5371-MGYMT-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-MGYMT-TR part is unused and in its original packaging.
Return procedure for MIC5371-MGYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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