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Microchip Technology MIC5371-PPYMT-TR
- Part No.:
- MIC5371-PPYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC5371-PPYMT-TR.pdf
- Description:
- IC REG LINEAR 3V/3V 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
MIC5371-PPYMT-TR from Micrel is a dual-channel, 150mA low-dropout linear regulator with independent enable control and auto-discharge functionality, delivering fixed 3.0V/3.0V outputs in a 1.6mm × 1.6mm Thin MLF® package. It achieves ±2% initial output accuracy, 155mV dropout at full load, and 32µA quiescent current per LDO-optimized for camera phone core and I/O power rails.
For engineers reviewing the MIC5371-PPYMT-TR datasheet, MIC5371-PPYMT-TR pinout, MIC5371-PPYMT-TR application, or MIC5371-PPYMT-TR equivalent, key selection criteria include dual-output independence, 30Ω auto-discharge NFET per channel, thermal shutdown, current limit protection, and stable operation with 1µF ceramic capacitors.
Technical Context
The MIC5371-PPYMT-TR integrates two fully independent CMOS-based LDOs sharing only VIN and GND. Each regulator features active-high enable logic, internal reference, and dedicated feedback path-enabling asynchronous on/off control without cross-talk.
Its auto-discharge circuit activates only when EN1 or EN2 is driven low, connecting a typical 30Ω NFET between VOUT and GND to rapidly deplete output capacitance. This behavior distinguishes it from the MIC5370 series, which lacks discharge capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V / 3.0V - eliminates external resistor networks; supports dual-rail microcontroller I/O and core domains. |
| Max Output Current | 150mA per LDO - sufficient for baseband processors, camera ISPs, and RF front-end biasing without thermal derating at ambient ≤89.9°C. |
| Dropout Voltage | 155mV @ 150mA - enables regulation from 3.15V input down to 3.0V output, critical for Li-ion battery discharge tail-end operation. |
| Quiescent Current | 32µA per LDO (typ.) - ensures ultra-low standby power in always-on sensor or RTC circuits. |
| Auto-Discharge Resistance | 30Ω (typ.) - discharges 10µF output cap from 3.0V to 0.3V in <1ms, preventing residual voltage from interfering with system reset sequencing. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared VIN rail. |
| Operating Input Range | 2.5V to 5.5V - compatible with single-cell Li-ion (2.7–4.2V), USB 5V, and boosted 3.3V supplies. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin MLF® (RoHS-compliant, NiPdAu lead finish, halogen-free mold compound). Exposed pad (EPAD) internally connected to GND for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Supply Input | Common input for both LDOs; requires 1µF ceramic decoupling to GND for stability and high-frequency noise rejection. |
| 2 - GND | Ground Reference | Power and signal return; must be low-impedance connection to EPAD and system ground plane. |
| 3 - EN2 | Enable Input (LDO2) | Active-high logic control; drives LDO2 output to zero-off state and engages auto-discharge when pulled low. |
| 4 - EN1 | Enable Input (LDO1) | Independent active-high control for LDO1; allows staggered power-up/down sequencing between dual rails. |
| 5 - VOUT2 | LDO2 Output | Regulated 3.0V supply; connects directly to load; auto-discharged via internal 30Ω FET when EN2 = low. |
| 6 - VOUT1 | LDO1 Output | Regulated 3.0V supply; functionally identical to VOUT2 but independently controlled; same auto-discharge behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual-enable architecture | EN1 and EN2 allow asymmetric power sequencing-e.g., powering VCORE before I/O or vice versa-without external logic. |
| Auto-discharge on disable | Each output actively sinks current via integrated 30Ω NFET when its enable pin is low, eliminating need for external bleed resistors. |
| Stable with 1µF ceramic capacitors | Eliminates requirement for large tantalum or aluminum electrolytics-reducing board area and improving reliability in portable designs. |
| Thermal and current-limit protection | Self-protecting under overload or high ambient conditions; latches off until thermal recovery, preventing permanent damage. |
| ±2% output accuracy (initial) | Meets tight tolerance requirements for memory I/O, ADC references, and digital logic supply rails without post-regulation trimming. |
Applications
| Camera Phone Power Management | Mobile Baseband Core/I/O Supply |
|---|---|
|
Use Scenario: Dual-rail power delivery to image sensor ISP (core) and interface logic (I/O) in compact smartphone modules. IC Role / Device Role / Timing Role: MIC5371-PPYMT-TR provides independent, fast-transient 3.0V supplies with synchronized or staggered enable control. Use Value: Auto-discharge prevents back-powering of sensor interfaces during sleep mode, ensuring clean reset and avoiding data corruption. |
Use Scenario: Powering application processor I/O banks and auxiliary peripherals in battery-powered handheld devices. IC Role / Device Role / Timing Role: MIC5371-PPYMT-TR serves as secondary LDO pair downstream of main PMIC, delivering clean, sequenced 3.0V rails. Use Value: Low 32µA quiescent current per channel extends battery life in always-on connectivity states (e.g., Bluetooth LE beacon mode). |
| GPS/PMP Audio Codec Bias | Portable Medical Sensor Hub |
|
Use Scenario: Providing regulated 3.0V supplies to GPS receiver RF section and audio DAC/ADC in portable media players. IC Role / Device Role / Timing Role: MIC5371-PPYMT-TR delivers low-noise, high-PSRR power to sensitive analog blocks while rejecting switching noise from DC/DC converters. Use Value: 60dB PSRR at 1kHz minimizes audible noise and GPS carrier phase jitter caused by shared power rail coupling. |
Use Scenario: Powering low-power MCU core and analog front-end (AFE) in wearable ECG or SpO₂ monitors. IC Role / Device Role / Timing Role: MIC5371-PPYMT-TR supplies stable 3.0V to both digital controller and precision analog signal chain with independent shutdown. Use Value: Zero-off-mode current (<1µA total) and auto-discharge ensure safe, predictable power-down during patient-detach events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5370-PPYMT-TR | No auto-discharge circuit; zero-off-mode only (no output sinking); identical pinout, package, and electrical specs otherwise. | Suitable where output capacitor discharge is handled externally or unnecessary (e.g., non-critical I/O rails). | Select MIC5370-PPYMT-TR if auto-discharge adds no value and BOM cost reduction is prioritized. |
| Torex XC6216D302MR-G | Single-output 300mA LDO; no dual-channel or enable pins; 250mV dropout @ 300mA; 1% accuracy. | Requires two separate ICs to match dual-rail functionality; lacks independent enable and discharge. | Choose only if higher current per rail (>150mA) is needed and board space permits duplication. |
Compared with MIC5371-PPYMT-TR, MIC5370-PPYMT-TR saves cost but forfeits safe discharge during shutdown, while XC6216D302MR-G offers tighter accuracy and higher current but sacrifices integration, sequencing control, and footprint efficiency.
Availability
MIC5371-PPYMT-TR is available at Aetrix Electronics and suitable for camera phones, portable medical sensors, GPS receivers, and handheld consumer electronics requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for MIC5371-PPYMT-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 analog and mixed-signal semiconductor company specializing in power management, timing, and interface solutions before its acquisition by Microchip Technology in 2015.
The MIC5371-PPYMT-TR belongs to Micrel's high-density dual-LDO family designed specifically for space-constrained, battery-powered portable electronics demanding independent rail control and fast transient response.
FAQ
What is the key functional difference between MIC5371-PPYMT-TR and MIC5370-PPYMT-TR?
The MIC5371-PPYMT-TR integrates an auto-discharge NFET (30Ω typical) on each output that activates when EN1 or EN2 is low, rapidly discharging external capacitors. The MIC5370-PPYMT-TR lacks this feature and enters only zero-current shutdown-leaving output voltage floating. This makes MIC5371-PPYMT-TR essential for systems requiring controlled power-down sequencing and elimination of residual voltage.
Does MIC5371-PPYMT-TR require external components for stability?
No-MIC5371-PPYMT-TR is stable with only 1µF ceramic output capacitors per rail and a 1µF ceramic input capacitor. X5R or X7R dielectrics are recommended; Y5V is not advised due to excessive capacitance loss over temperature. No external compensation or bypass resistors are needed, simplifying layout and reducing BOM count.
What is the maximum ambient temperature MIC5371-PPYMT-TR can operate at with 150mA load on both outputs?
At VIN = 3.6V, VOUT = 3.0V × 2, and 150mA per LDO, MIC5371-PPYMT-TR dissipates ~0.39W. With θJA = 90°C/W and TJ(max) = 125°C, the maximum ambient temperature is calculated as TA = 125°C − (0.39W × 90°C/W) ≈ 89.9°C. Derating is required above this ambient level to avoid thermal shutdown.
Can MIC5371-PPYMT-TR be used with input voltages below 2.5V?
No-MIC5371-PPYMT-TR has a specified operating input range of 2.5V to 5.5V. Operation below 2.5V violates Absolute Maximum Ratings and may result in unregulated output, increased dropout, or failure to enable. For sub-2.5V applications, alternative LDOs with lower VIN minima must be selected.
Is the exposed pad (EPAD) on MIC5371-PPYMT-TR electrically connected, and how should it be handled in PCB layout?
Yes-the EPAD is internally connected to GND and must be soldered to a solid copper thermal pad tied directly to the system ground plane. Thermal vias (≥4× 0.3mm diameter) are recommended beneath the EPAD to enhance heat dissipation. Leaving the EPAD unconnected compromises thermal performance and may trigger premature thermal shutdown under load.
MIC5371-PPYMT-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):
- 3V, 3V
- 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-PPYMT-TR FAQ
1.How can I place an order for MIC5371-PPYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5371-PPYMT-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-PPYMT-TR reliable?
The price and inventory of MIC5371-PPYMT-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-PPYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5371-PPYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5371-PPYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5371-PPYMT-TR?
MIC5371-PPYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5371-PPYMT-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-PPYMT-TR?
For technical support, including MIC5371-PPYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5371-PPYMT-TR requirements.
6.How does Aetrix verify that MIC5371-PPYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5371-PPYMT-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-PPYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5371-PPYMT-TR?
All MIC5371-PPYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5371-PPYMT-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-PPYMT-TR part is unused and in its original packaging.
Return procedure for MIC5371-PPYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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