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Microchip Technology MIC5331-G4YMT-TR
- Part No.:
- MIC5331-G4YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC5331-G4YMT-TR.pdf
- Description:
- IC REG LINEAR 1.2V/1.8V 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:279
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Product details
Overview
MIC5331-G4YMT-TR from Microchip Technology is a dual ultra-low dropout (ULDO) linear regulator IC delivering two independent 300 mA outputs at fixed 1.8 V and 1.2 V, operating from 2.3 V to 5.5 V input, with 25 µA quiescent current per LDO and 120 mV dropout at full load-designed for power-sensitive mobile camera modules and GPS receivers.
For engineers reviewing the MIC5331-G4YMT-TR datasheet, MIC5331-G4YMT-TR pinout, MIC5331-G4YMT-TR application, or MIC5331-G4YMT-TR equivalent, this page delivers verified electrical specs, thermal performance data, enable control behavior, noise/PSRR metrics, and dual-LDO sequencing guidance critical for low-power portable system design.
Technical Context
The MIC5331-G4YMT-TR integrates two independent CMOS-based ULDO regulators sharing a common VIN and GND, each with active-high EN1/EN2 enabling independent power domain control. Its µCap architecture ensures stability with only 1 µF ceramic output capacitors per channel.
Each LDO features internal current limiting (350–800 mA), thermal shutdown, and high PSRR (>65 dB at 1 kHz), while maintaining low output noise (50 µVRMS, 10 Hz–100 kHz) and fast transient response-enabling clean, sequenced power delivery to mixed-voltage SoC subsystems like camera DSPs and RF front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V - supports single-cell Li-ion, Li-poly, or regulated 3.3 V/5 V rails without external pre-regulation. |
| Output Voltages | 1.8 V / 1.2 V (fixed, non-adjustable) - powers I/O domains and core logic of image sensors and baseband processors simultaneously. |
| Max Output Current | 300 mA per LDO - sufficient for modern camera ISPs and GPS baseband ICs under peak burst load. |
| Quiescent Current | 25 µA per LDO - enables multi-day standby in always-on sensor nodes without compromising regulation. |
| Dropout Voltage | 120 mV @ 300 mA - maintains regulation down to VIN = 1.92 V on 1.8 V rail and VIN = 1.32 V on 1.2 V rail. |
| PSRR | >65 dB @ 1 kHz - suppresses switching noise from PMICs or DC-DC converters feeding the same board plane. |
| Output Noise | 50 µVRMS (10 Hz–100 kHz) - meets stringent analog supply requirements for ADCs and RF synthesizers. |
| Operating Temp | –40°C to +125°C junction - qualified for automotive cabin and industrial handheld environments. |
Pinout & Package
Package: 8-pin 2 mm × 2 mm × 0.6 mm Thin DFN (TDFN-8, MT suffix), leadless, wettable flank compatible, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Common Input Supply | Shared input for both LDOs; requires 1 µF ceramic bypass to GND for stability and noise rejection. |
| 2 - GND | Power Ground Reference | Single ground return path for both regulators; must be low-impedance and thermally coupled to PCB copper pour. |
| 3 - NC | No Connect | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 4 - EN2 | LDO2 Enable Control | Active-high digital input (VIH ≥ 1.2 V); controls startup/shutdown of 1.2 V output independently of LDO1. |
| 5 - EN1 | LDO1 Enable Control | Active-high digital input (VIH ≥ 1.2 V); controls startup/shutdown of 1.8 V output; enables power sequencing flexibility. |
| 6 - NC | No Connect | Not internally bonded; must remain unconnected on PCB to prevent unintended ESD paths or signal coupling. |
| 7 - VOUT2 | LDO2 Output Terminal | Delivers regulated 1.2 V; requires dedicated 1 µF ceramic capacitor to GND placed within 2 mm of pin. |
| 8 - VOUT1 | LDO1 Output Terminal | Delivers regulated 1.8 V; requires dedicated 1 µF ceramic capacitor to GND placed within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Independent Enables | EN1 and EN2 allow staggered power-up/down of 1.8 V and 1.2 V domains-critical for avoiding back-powering or latch-up in multi-rail SoCs. |
| µCap Stability | Stable with only 1 µF ceramic output capacitors per LDO-reduces BOM count, PCB area, and cost versus legacy LDOs requiring ≥10 µF tantalum. |
| Ultra-Low Dropout | 120 mV dropout at 300 mA enables operation from aging batteries or tightly regulated intermediate rails without headroom loss. |
| Low-Noise Regulation | 50 µVRMS output noise ensures clean supply for precision analog blocks (e.g., PLLs, ADCs) without additional filtering stages. |
| Thermal & Current Protection | Integrated thermal shutdown and foldback current limiting prevent damage during overload or poor heatsinking-no external protection circuitry needed. |
| Wide Temp Range | Specified from –40°C to +125°C junction enables use in automotive infotainment, industrial handhelds, and outdoor GPS devices. |
Applications
| Camera Module Power | GPS Baseband Supply |
|---|---|
Use Scenario: Powers image sensor, ISP, and autofocus actuator in smartphone front/rear cameras with simultaneous 1.8 V I/O and 1.2 V core rails. IC Role / Device Role / Timing Role: Dual-LDO provides isolated, low-noise, sequenced voltage domains-EN1 enables 1.8 V first for sensor initialization, then EN2 enables 1.2 V for ISP processing. Use Value: Eliminates need for discrete regulators or PMIC complexity while meeting <100 µV noise requirement for Bayer pattern correction accuracy. | Use Scenario: Supplies 1.2 V core and 1.8 V RF interface for standalone GPS receiver ICs in asset trackers and wearable navigation devices. IC Role / Device Role / Timing Role: Delivers clean, low-dropout power to GPS baseband processor and LNA bias circuits-EN2 disabled during sleep mode to cut leakage to <1 µA. Use Value: Enables >72-hour battery life in coin-cell-powered trackers by minimizing quiescent draw across both rails. |
| Mobile Phone Core Logic | Portable Medical Sensor Hub |
Use Scenario: Provides 1.8 V and 1.2 V supplies to application processor subsystems (e.g., memory I/O, GPU voltage domains) in compact feature phones. IC Role / Device Role / Timing Role: Acts as secondary local regulator downstream of main PMIC-accepts 3.3 V input and generates precise, low-noise sub-rails. Use Value: Reduces conducted EMI into sensitive RF bands by >20 dB via >65 dB PSRR, improving cellular receive sensitivity. | Use Scenario: Powers ECG analog front-end, Bluetooth LE SoC, and flash memory in handheld patient monitors with strict EMC and battery-life requirements. IC Role / Device Role / Timing Role: Supplies regulated 1.2 V to ADC reference and 1.8 V to BLE radio-EN1/EN2 synchronized to measurement cycles to minimize idle current. Use Value: Achieves <50 µVRMS supply noise required for 16-bit ECG resolution without adding ferrite beads or LC filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5332-J4YMT-TR | 2.5 V / 1.2 V fixed outputs; identical package, pinout, and spec limits except output voltages. | Suitable where higher I/O voltage (2.5 V) is required for legacy interfaces or specific sensor compatibility. | Select when system requires 2.5 V logic rail instead of 1.8 V-no layout change needed due to pin-to-pin compatibility. |
| TPL7407LPGP | 7-channel 400 mA sink driver with integrated LDO-like regulation; not dual-output, no enable per channel, higher IQ (50 µA). | Targeted at LED/relay driving with auxiliary bias generation-not optimized for low-noise analog or sequencing-critical loads. | Consider only for cost-sensitive, non-precision applications where multi-channel drive + basic regulation suffices and noise/PSRR are secondary. |
Compared with MIC5331-G4YMT-TR, MIC5332-J4YMT-TR offers direct pin-compatible replacement with different output voltages, while TPL7407LPGP trades precision dual-LDO performance for multi-channel drive capability-making it unsuitable for noise-sensitive camera or GPS use cases.
Availability
MIC5331-G4YMT-TR is available at Aetrix Electronics and suitable for camera modules, GPS receivers, and portable medical sensors requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC5331-G4YMT-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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing.
The MIC5331 product line delivers micro-power dual LDOs for space-constrained, battery-operated portable electronics-designed to replace discrete regulators while meeting stringent noise, dropout, and sequencing requirements.
FAQ
What are the exact output voltages of the MIC5331-G4YMT-TR?
The MIC5331-G4YMT-TR provides two fixed, non-adjustable output voltages: 1.8 V on VOUT1 (Pin 8) and 1.2 V on VOUT2 (Pin 7). These values are laser-trimmed during production and specified with ±1.0% accuracy at +25°C and ±2.0% over –40°C to +125°C, as confirmed in Table 1-1 of the DS20005874A datasheet. The "G4" in the part number explicitly denotes this 1.8 V / 1.2 V configuration.
Can the MIC5331-G4YMT-TR operate with only one LDO enabled?
Yes, the MIC5331-G4YMT-TR supports independent operation: EN1 (Pin 5) controls LDO1 (1.8 V), and EN2 (Pin 4) controls LDO2 (1.2 V). Either can be held low to disable its respective output while the other remains active. When only one LDO is enabled, ground current drops to 25 µA (typical), and the disabled LDO draws ≤1.0 µA shutdown current-verified in Table 1-1 under "Ground Current in Shutdown".
What output capacitor value is required for stable operation of the MIC5331-G4YMT-TR?
The MIC5331-G4YMT-TR requires a minimum 1 µF ceramic output capacitor per LDO (COUT1 and COUT2), as stated in Section 4.2 and General Description. X5R or X7R dielectrics are recommended for temperature stability; Y5V is not advised due to >60% capacitance loss over temperature. Performance is optimized at 1 µF-larger values do not improve regulation or transient response significantly.
Does the MIC5331-G4YMT-TR include thermal protection?
Yes, the MIC5331-G4YMT-TR integrates thermal shutdown protection that disables both LDOs when junction temperature exceeds +125°C (typical), as documented in Features and Section 4.0. Recovery occurs automatically once temperature falls below the hysteresis threshold (~15°C below trip point). This protection is independent of current limit and operates even with EN1/EN2 asserted high.
What is the maximum allowable power dissipation for the MIC5331-G4YMT-TR in its TDFN-8 package?
The MIC5331-G4YMT-TR has a junction-to-ambient thermal resistance (θJA) of 90°C/W in the standard 2 mm × 2 mm TDFN layout. Maximum power dissipation is calculated as PD(max) = (125°C − TA)/90°C/W. At TA = +85°C, PD(max) ≈ 0.44 W. This aligns with Equation 4-1 in the datasheet, where simultaneous 300 mA loads at 3.0 V and 2.8 V outputs yield ~0.42 W-confirming safe operation up to +87°C ambient under those conditions.
MIC5331-G4YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- 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):
- 1.2V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.24V @ 300mA, 0.24V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 75 µA
- PSRR:
- 65dB ~ 45dB (1kHz ~ 20kHz)
- 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-MLF® (2x2)
MIC5331-G4YMT-TR FAQ
1.How can I place an order for MIC5331-G4YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5331-G4YMT-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 MIC5331-G4YMT-TR reliable?
The price and inventory of MIC5331-G4YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5331-G4YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5331-G4YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5331-G4YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5331-G4YMT-TR?
MIC5331-G4YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5331-G4YMT-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 MIC5331-G4YMT-TR?
For technical support, including MIC5331-G4YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5331-G4YMT-TR requirements.
6.How does Aetrix verify that MIC5331-G4YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5331-G4YMT-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 MIC5331-G4YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5331-G4YMT-TR?
All MIC5331-G4YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5331-G4YMT-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 MIC5331-G4YMT-TR part is unused and in its original packaging.
Return procedure for MIC5331-G4YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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