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Microchip Technology MIC5393-SGYMX-TR
- Part No.:
- MIC5393-SGYMX-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
MIC5393-SGYMX-TR.pdf
- Description:
- IC REG LINEAR 1.8V/3.3V 6XTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,545
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Product details
Overview
MIC5393-SGYMX-TR from Micrel is a dual-channel, high-PSRR low-dropout linear regulator delivering 150mA per channel with fixed 3.3V/1.8V outputs in a 6-pin 1.2mm × 1.2mm Extra Thin DFN package. It features independent CMOS enable pins, 60dB ripple rejection at 1kHz, and integrated 25Ω auto-discharge circuitry on both outputs-optimized for camera DSP power supply and image sensor biasing in space-constrained mobile devices.
For engineers reviewing the MIC5393-SGYMX-TR datasheet, MIC5393-SGYMX-TR pinout, MIC5393-SGYMX-TR application, or MIC5393-SGYMX-TR equivalent, key selection criteria include dual-rail voltage sequencing, ultra-low quiescent current (32µA per LDO), stability with 1µF ceramic capacitors, and thermal performance in ≤0.4mm profile packages.
Technical Context
The MIC5393-SGYMX-TR integrates two independent LDO regulators sharing a common input (VIN) and ground (GND), each with dedicated enable (EN1/EN2) and output (VOUT1/VOUT2) terminals. Its µCap architecture enables stable operation with 1µF ceramic output capacitors, eliminating bulk bypass requirements while maintaining ≥60dB PSRR up to 1kHz.
This device implements thermal shutdown and current-limit protection per channel, plus an internal 25Ω NMOS discharge path activated during shutdown-exclusive to the MIC5393 family. The 1.2mm × 1.2mm Extra Thin DFN package delivers θJA = 173°C/W and supports operation from –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltages | 3.3V (VOUT1) and 1.8V (VOUT2), fixed, ±2% initial accuracy |
| Max output current | 150mA per channel-supports simultaneous dual-rail loads without derating |
| Dropout voltage | 155mV at 150mA-enables regulation from 3.455V input on 3.3V rail |
| PSRR | 60dB at 1kHz-rejects switching noise from PMIC or DC-DC converters feeding VIN |
| Quiescent current | 32µA per LDO-minimizes standby power in always-on camera modules |
| Auto-discharge | 25Ω internal NMOS per output-ensures rapid VOUT decay (<1ms) when disabled |
| Input voltage range | 2.5V to 5.5V-compatible with single-cell Li-ion (3.0–4.2V) and 5V USB-supplied systems |
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 fixed 3.3V; requires ≥1µF ceramic capacitor to GND for stability |
| 2 - VOUT2 | Regulator 2 output | Delivers fixed 1.8V; includes 25Ω auto-discharge path to GND when EN2 = low |
| 3 - GND | Power ground | Common return for both LDOs and ePad; must be low-impedance plane |
| 4 - EN2 | Enable input for VOUT2 | Active-high CMOS input; logic low disables VOUT2 and activates discharge circuit |
| 5 - VIN | Input supply | Shared input for both LDOs; requires ≥1µF ceramic capacitor to GND |
| 6 - EN1 | Enable input for VOUT1 | Active-high CMOS input; independent control enables staggered power-up sequencing |
| ePad | Thermal pad | Exposed copper pad for heat dissipation; must be soldered to solid GND plane |
Key Features
| Feature | Design Value |
|---|---|
| µCap stability | Operates stably with only 1µF ceramic output capacitors-reduces BOM count and board area vs. traditional LDOs requiring ≥10µF |
| Dual independent enables | EN1 and EN2 allow precise sequencing of 3.3V and 1.8V rails-critical for image sensor startup timing and I/O voltage ordering |
| Auto-discharge circuitry | 25Ω NMOS per output discharges external caps rapidly upon disable-prevents floating voltages that could damage downstream logic |
| High PSRR | 60dB rejection at 1kHz-maintains clean analog supply for camera DSPs despite noisy shared VIN from buck converters |
| Low thermal resistance | θJA = 173°C/W in 1.44mm² footprint-enables 150mA/channel continuous operation without external heatsinking |
Applications
| Smartphone Camera Module Power | Image Sensor Bias Supply |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor with separate analog (3.3V) and digital core (1.8V) domains. IC Role / Device Role / Timing Role: Provides sequenced, low-noise, independently controllable 3.3V and 1.8V supplies during sensor initialization and active capture. Use Value: Auto-discharge ensures rapid VDDIO ramp-down between frames, preventing latch-up in sensor interface logic. |
Use Scenario: Stable bias for high-resolution rolling-shutter sensors in compact tablets. IC Role / Device Role / Timing Role: Delivers regulated 3.3V AVDD and 1.8V DVDD with <2% output error across –40°C to +85°C ambient. Use Value: 60dB PSRR suppresses noise from adjacent RF transceivers, preserving SNR in raw image data. |
| Portable Audio Codec Supply | Mobile PDA Core Logic Power |
|
Use Scenario: Clean power for stereo audio DAC/ADC in Bluetooth headphones. IC Role / Device Role / Timing Role: Supplies 3.3V reference and 1.8V digital core from single Li-ion cell; enables/disables per playback state. Use Value: 32µA quiescent current per LDO extends battery life during pause mode without compromising startup time. |
Use Scenario: Dual-voltage support for ARM-based PDA application processors with I/O and core voltage domains. IC Role / Device Role / Timing Role: Generates 3.3V I/O rail and 1.8V core rail with independent enable control for dynamic voltage scaling. Use Value: Low dropout (155mV) allows full 150mA delivery even as battery discharges to 3.45V, extending usable runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5392-SGYMX | No auto-discharge circuit; identical pinout, package, and electrical specs except missing 25Ω NMOS discharge paths | Suitable where rapid output discharge is not required-e.g., non-sequenced always-on peripherals | Select MIC5392-SGYMX if system does not require controlled VOUT decay during disable |
| Torex XC6210B331MR-G | Single-output 3.3V LDO (150mA); no second channel or 1.8V output; different pinout (SOT-25) | Requires two separate ICs to replicate dual-rail functionality-increases board area and component count | Choose only if design already uses Torex platform and can accommodate discrete dual-LDO layout |
Compared with MIC5392-SGYMX, the MIC5393-SGYMX-TR adds essential auto-discharge for safe sensor power cycling; versus XC6210B331MR-G, it delivers true integrated dual-rail capability in half the footprint with matched sequencing control.
Availability
MIC5393-SGYMX-TR is available at Aetrix Electronics and suitable for smartphone camera modules, portable audio codecs, and mobile PDA core logic requiring stable component supply with dual fixed-voltage outputs and auto-discharge functionality.
Supply support for MIC5393-SGYMX-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) is a global designer of high-performance analog, power, and timing semiconductors, with expertise in low-dropout regulators, Ethernet PHYs, and clock solutions.
The MIC5393 belongs to Micrel's µCap dual-LDO family, engineered specifically for space-constrained portable electronics needing independent, low-noise, sequenced dual-rail power with minimal external components.
FAQ
What output voltages does the MIC5393-SGYMX-TR provide?
The MIC5393-SGYMX-TR provides fixed 3.3V on VOUT1 and 1.8V on VOUT2, with ±2% initial accuracy over temperature and load. These values are laser-trimmed during manufacturing and cannot be adjusted externally. The marking code "SGYMX" explicitly denotes the 3.3V/1.8V variant within the MIC5393 family, confirmed in Micrel's official ordering information table.
Does the MIC5393-SGYMX-TR support independent enable control for each output?
Yes, the MIC5393-SGYMX-TR features two dedicated CMOS-compatible enable inputs: EN1 controls VOUT1 (3.3V) and EN2 controls VOUT2 (1.8V). Each pin is active-high with logic thresholds of 0.2V (low) and 1.2V (high), enabling precise power sequencing-for example, powering the 3.3V analog rail before enabling the 1.8V digital core. Leaving either enable pin floating is prohibited and may cause erratic behavior.
What is the purpose of the auto-discharge function in the MIC5393-SGYMX-TR?
The MIC5393-SGYMX-TR incorporates a 25Ω NMOS transistor between each output and ground, activated automatically when its respective enable pin is driven low. This discharges external output capacitors rapidly-typically within microseconds-to prevent residual voltage from interfering with downstream logic states or causing latch-up during power-down sequences. This feature is exclusive to MIC5393 variants and absent in MIC5392 equivalents.
Can the MIC5393-SGYMX-TR operate stably with only 1µF ceramic output capacitors?
Yes, the MIC5393-SGYMX-TR is designed as a µCap regulator and remains stable with minimum 1µF X5R/X7R ceramic capacitors on both VOUT1 and VOUT2. This eliminates the need for larger electrolytic or tantalum capacitors, reducing board area and cost. Performance is optimized for 1µF; increasing capacitance yields no significant improvement in transient response or PSRR, per Micrel's application notes and electrical characteristics table.
What package type and thermal characteristics apply to the MIC5393-SGYMX-TR?
The MIC5393-SGYMX-TR uses a 6-pin 1.2mm × 1.2mm Extra Thin DFN (MX) package with 0.4mm maximum height and an exposed thermal pad (ePad). Its junction-to-ambient thermal resistance (θJA) is 173°C/W. At 150mA per channel and 3.6V input, typical power dissipation is ~0.21W, allowing continuous operation up to ~89°C ambient temperature with proper PCB copper grounding of the ePad, as calculated in Micrel's thermal application guidance.
MIC5393-SGYMX-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):
- 1.8V, 3.3V
- 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-XTDFN (1.2x1.2)
MIC5393-SGYMX-TR FAQ
1.How can I place an order for MIC5393-SGYMX-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5393-SGYMX-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-SGYMX-TR reliable?
The price and inventory of MIC5393-SGYMX-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-SGYMX-TR is usually 5 days.
3.What payment methods are accepted for MIC5393-SGYMX-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5393-SGYMX-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5393-SGYMX-TR?
MIC5393-SGYMX-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5393-SGYMX-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-SGYMX-TR?
For technical support, including MIC5393-SGYMX-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5393-SGYMX-TR requirements.
6.How does Aetrix verify that MIC5393-SGYMX-TR is sourced from the original manufacturer or authorized distributors?
All MIC5393-SGYMX-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-SGYMX-TR meets industry standards.
7.What is the process for return or replacement of MIC5393-SGYMX-TR?
All MIC5393-SGYMX-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5393-SGYMX-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-SGYMX-TR part is unused and in its original packaging.
Return procedure for MIC5393-SGYMX-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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