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Microchip Technology MIC5393-FMYMX-TR
- Part No.:
- MIC5393-FMYMX-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
MIC5393-FMYMX-TR.pdf
- Description:
- IC REG LINEAR 1.5V/2.8V 6XTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
MIC5393-FMYMX-TR from Micrel is a dual-channel, high-PSRR low-dropout linear regulator with independent enable control, delivering 150mA per channel at fixed output voltages of 1.5V and 2.8V. It features µCap stability with 1µF ceramic output capacitors, 155mV dropout at full load, and integrated 25Ω auto-discharge circuitry on both outputs - optimized for camera DSP power supply circuits in mobile phones and image sensor modules.
For engineers reviewing the MIC5393-FMYMX-TR datasheet, MIC5393-FMYMX-TR pinout, MIC5393-FMYMX-TR application, or MIC5393-FMYMX-TR equivalent, key selection criteria include dual-rail voltage sequencing, ultra-small 1.2mm × 1.2mm Extra Thin DFN package, thermal performance under 150mA dual-load conditions, and auto-discharge behavior during shutdown.
Technical Context
The MIC5393-FMYMX-TR integrates two independent CMOS-based LDO regulators sharing a common input (VIN) and ground (GND), each with dedicated active-high enable inputs (EN1/EN2) and output pins (VOUT1/VOUT2). Its internal architecture includes linear current limiting, thermal shutdown, and an NFET discharge path activated only when EN1/EN2 are logic-low - a feature distinguishing it from the MIC5392 family.
It operates across 2.5V–5.5V input range with ±2% initial output accuracy and maintains >60dB PSRR at 1kHz. The 1.2mm × 1.2mm Extra Thin DFN package (0.4mm height) uses NiPdAu lead finish and halogen-free mold compound, supporting RoHS-compliant assembly while achieving θJA = 173°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Pair | 1.5V / 2.8V - fixed dual-rail configuration enabling simultaneous biasing of digital core and analog sensor blocks. |
| Max Output Current | 150mA per channel - supports peak loads in camera ISP and CMOS image sensor power domains without thermal derating in compact layouts. |
| Dropout Voltage | 155mV at 150mA - allows operation from 3.0V input to sustain 2.8V rail, critical for battery-powered systems with tight headroom. |
| PSRR | ≥60dB at 1kHz - suppresses switching noise from PMICs or DC-DC converters, eliminating need for additional bypass capacitors. |
| Quiescent Current | 32µA per LDO - enables always-on subsystems (e.g., wake-on-event sensors) with minimal battery drain. |
| Auto-Discharge | 25Ω internal NFET per output - actively discharges VOUT1/VOUT2 within microseconds after disable, preventing floating rails and latch-up in multi-rail SoC interfaces. |
| Stability Capacitor | 1µF ceramic (X5R/X7R) - reduces BOM count and PCB area vs. traditional LDOs requiring ≥10µF tantalum or aluminum electrolytic. |
Pinout & Package
Package: 6-pin 1.2mm × 1.2mm Extra Thin DFN (MX), 0.4mm max height, exposed thermal pad (ePad) requiring PCB ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT1 | Regulator 1 output | Delivers 1.5V at up to 150mA; requires local 1µF ceramic capacitor to GND for stability. |
| 2 - VOUT2 | Regulator 2 output | Delivers 2.8V at up to 150mA; shares same stability requirements as VOUT1. |
| 3 - GND | Power and signal reference | Common return path for both LDOs and ePad thermal sink; must be low-impedance plane connection. |
| 4 - EN2 | Active-high enable for LDO2 | Logic-high (>1.2V) enables 2.8V output; floating state is prohibited and may cause erratic behavior. |
| 5 - VIN | Input supply | Accepts 2.5V–5.5V; requires 1µF ceramic capacitor to GND close to pin for high-frequency noise filtering. |
| 6 - EN1 | Active-high enable for LDO1 | Logic-high (>1.2V) enables 1.5V output; independent control allows staggered power-up sequences. |
| ePad | Thermal dissipation path | Exposed copper pad beneath package; must be soldered to solid GND plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1/EN2 allow precise sequencing of 1.5V and 2.8V rails - essential for avoiding back-powering in camera module interfaces. |
| Auto-discharge circuitry | 25Ω NFET per output discharges VOUT1/VOUT2 rapidly upon disable - prevents residual voltage from interfering with reset timing or I²C bus states. |
| µCap-compatible design | Stable with 1µF X5R/X7R ceramic capacitors - eliminates bulkier, higher-ESR alternatives and saves ≥2.5mm² PCB area per channel. |
| High PSRR (>60dB @ 1kHz) | Rejects ripple from shared input sources (e.g., buck converter outputs), enabling clean analog power without extra LC filters. |
| Thermal shutdown + current limit | Protects against short-circuit or overload events without external components - ensures robustness in handheld device drop-test scenarios. |
Applications
| Smartphone Camera Modules | Image Sensor Power Management |
|---|---|
|
Use Scenario: Dual-rail power delivery to CMOS image sensor (1.5V digital core, 2.8V analog/IO) in flagship smartphones. IC Role / Device Role / Timing Role: Primary dual-LDO regulator providing sequenced, low-noise bias with fast enable/disable response. Use Value: Auto-discharge prevents sensor latch-up during mode transitions; 60dB PSRR eliminates need for separate analog LDO, reducing BOM cost by one IC. |
Use Scenario: Powering rolling-shutter and global-shutter image sensors in industrial inspection cameras. IC Role / Device Role / Timing Role: Stable, low-drift voltage source maintaining <±2% accuracy across –40°C to +125°C junction temperature. Use Value: 155mV dropout enables operation from single-cell Li-ion (3.0V min) while sustaining 2.8V rail, extending runtime in battery-constrained edge devices. |
| Portable Audio Codecs | Mobile PDA Power Subsystem |
|
Use Scenario: Supplying clean 1.5V DVDD and 2.8V AVDD to stereo audio codecs in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-noise dual LDO replacing discrete solutions to meet THD+N <–95dB requirements. Use Value: 100µVRMS output noise and 1µF ceramic compatibility minimize audible artifacts and eliminate capacitor footprint overhead. |
Use Scenario: Powering ARM-based PDA applications requiring independent control of processor core (1.5V) and display interface (2.8V). IC Role / Device Role / Timing Role: Sequencing controller via EN1/EN2 enabling safe power-up/down of heterogeneous subsystems. Use Value: Independent enables reduce system-level reset complexity; 32µA quiescent current per LDO extends standby time beyond 72 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5392-FMYMX | No auto-discharge circuit; identical pinout, voltage pair, and package. | Lacks rapid VOUT discharge - unsuitable where rail collapse timing is critical (e.g., I²C slave reset). | Select MIC5392-FMYMX only if auto-discharge is unnecessary and cost minimization is prioritized. |
| Torex XC6216D152MR-G | Single-channel 150mA LDO; 1.5V fixed; no 2.8V rail or EN2 pin. | Requires two separate ICs to replicate dual-rail functionality, increasing layout area and component count. | Choose only when 2.8V rail is sourced elsewhere and board space permits dual discrete LDOs. |
Compared with MIC5392-FMYMX, the MIC5393-FMYMX-TR adds essential auto-discharge for reliable multi-rail sequencing; versus Torex XC6216D152MR-G, it delivers integrated dual-rail operation with matched thermal characteristics in half the footprint.
Availability
MIC5393-FMYMX-TR is available at Aetrix Electronics and suitable for smartphone camera modules, portable audio codecs, industrial image sensors, and mobile PDA power subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5393-FMYMX-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 (now part of Microchip Technology) was a leading designer of high-performance analog, power, and timing ICs, specializing in low-dropout regulators, Ethernet PHYs, and clock management solutions for portable and industrial markets.
The MIC5393-FMYMX-TR belongs to Micrel's µCap dual-LDO product line, engineered specifically for space-constrained, battery-powered imaging and audio applications demanding ultra-small footprint, low quiescent current, and fast dynamic response.
FAQ
What output voltages does the MIC5393-FMYMX-TR provide?
The MIC5393-FMYMX-TR provides fixed dual outputs of 1.5V on VOUT1 and 2.8V on VOUT2. These values are factory-trimmed and specified over the full –40°C to +125°C junction temperature range with ±2% initial accuracy. No external feedback resistors are required, and the voltages cannot be adjusted.
Does the MIC5393-FMYMX-TR require external capacitors for stability?
Yes - the MIC5393-FMYMX-TR requires a 1µF X5R or X7R ceramic capacitor from each VOUT pin to GND, and a 1µF ceramic capacitor from VIN to GND. These are mandatory for stability and noise suppression; Y5V or Z5U dielectrics are not recommended due to excessive capacitance drift over temperature.
How does the auto-discharge function work in the MIC5393-FMYMX-TR?
When either EN1 or EN2 is driven low, the corresponding LDO shuts down and its internal 25Ω NFET connects that VOUT pin to GND, discharging the output capacitor rapidly. This behavior is exclusive to the MIC5393 family and is absent in MIC5392 variants - it prevents floating rails that could disrupt downstream logic or cause I²C bus contention.
What is the maximum ambient temperature for continuous 150mA operation on both channels of the MIC5393-FMYMX-TR?
At VIN = 3.6V, VOUT1 = 1.5V, VOUT2 = 2.8V, and 150mA per channel, the MIC5393-FMYMX-TR dissipates ~0.21W. With θJA = 173°C/W and TJ(MAX) = 125°C, the maximum ambient temperature is approximately 89°C for the 1.2mm × 1.2mm Extra Thin DFN package - assuming proper ePad grounding and minimal PCB copper area.
Is the MIC5393-FMYMX-TR pin-compatible with other MIC5392/3 variants?
Yes - all MIC5392/3 variants in the 6-pin 1.2mm × 1.2mm Extra Thin DFN (MX) package share identical pinout, including MIC5393-FMYMX-TR, MIC5393-PMYMX, and MIC5393-SGYMX. Voltage differences are internal; EN1/EN2, VIN, VOUT1, VOUT2, GND, and ePad positions remain unchanged across the family.
MIC5393-FMYMX-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-XFDFN Exposed Pad
- 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):
- 1.5V, 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-XTDFN (1.2x1.2)
MIC5393-FMYMX-TR FAQ
1.How can I place an order for MIC5393-FMYMX-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5393-FMYMX-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 MIC5393-FMYMX-TR reliable?
The price and inventory of MIC5393-FMYMX-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5393-FMYMX-TR is usually 5 days.
3.What payment methods are accepted for MIC5393-FMYMX-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5393-FMYMX-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5393-FMYMX-TR?
MIC5393-FMYMX-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5393-FMYMX-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 MIC5393-FMYMX-TR?
For technical support, including MIC5393-FMYMX-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5393-FMYMX-TR requirements.
6.How does Aetrix verify that MIC5393-FMYMX-TR is sourced from the original manufacturer or authorized distributors?
All MIC5393-FMYMX-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 MIC5393-FMYMX-TR meets industry standards.
7.What is the process for return or replacement of MIC5393-FMYMX-TR?
All MIC5393-FMYMX-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5393-FMYMX-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 MIC5393-FMYMX-TR part is unused and in its original packaging.
Return procedure for MIC5393-FMYMX-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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