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Microchip Technology MIC5356-SGYMME-TR
- Part No.:
- MIC5356-SGYMME-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MIC5356-SGYMME-TR.pdf
- Description:
- IC REG LINEAR 1.8V/3.3V 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,239
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Product details
Overview
MIC5356-SGYMME-TR from Micrel is a dual-channel, micropower, low-dropout linear regulator delivering two independently enabled 500mA LDO outputs with fixed 3.3V and 1.8V outputs in an 8-pin ePad MSOP package. It operates from 2.5V to 5.5V input, achieves 2% output accuracy, maintains stability with only 2.2µF ceramic capacitors, and features active discharge (30Ω) on both outputs when disabled - ideal for battery-powered portable electronics requiring fast transient response and ultra-low quiescent current.
For engineers reviewing the MIC5356-SGYMME-TR datasheet, MIC5356-SGYMME-TR pinout, MIC5356-SGYMME-TR application, or MIC5356-SGYMME-TR equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal performance (θJA = 64.4°C/W), real-world load/line transient behavior, and accurate substitution guidance for dual-rail power management in space-constrained designs.
Technical Context
The MIC5356-SGYMME-TR integrates two independent CMOS-based LDO regulators with active-high enable control (EN1/EN2), each supporting up to 500mA continuous output. Its µCap architecture enables stable operation with 2.2µF low-ESR ceramic capacitors on both input and output, eliminating need for tantalum or electrolytic types.
Unlike the MIC5355 variant, the MIC5356-SGYMME-TR includes integrated auto-discharge circuitry - a 30Ω NFET switch per output activated during shutdown - ensuring rapid VOUT ramp-down and preventing floating rail issues in multi-voltage domain systems. Protection includes thermal shutdown and current limiting (750mA typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V / 1.8V (fixed, non-adjustable; enables direct powering of core logic and I/O rails) |
| Max Output Current | 500mA per channel (supports dual-core SoC or FPGA I/O + core supply without external boost) |
| Dropout Voltage | 350mV at 500mA (enables >90% efficiency at VIN = 3.6V → VOUT2 = 1.8V) |
| Quiescent Current | 70µA total (both LDOs enabled); <1µA in shutdown (extends battery life in standby modes) |
| Output Capacitor | 2.2µF ceramic minimum (reduces BOM count, board area, and cost vs. legacy LDOs requiring ≥10µF) |
| PSRR | 60dB at 1kHz (suppresses switching noise from upstream DC/DC converters) |
| Auto-Discharge | 30Ω internal pull-down per output (eliminates need for external bleed resistors in power sequencing) |
Pinout & Package
Package: 8-pin ePad MSOP (MME), thermally enhanced with exposed heatsink pad (HSPAD) requiring connection to PCB ground plane via thermal vias for optimal θJA = 64.4°C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Supply Input | Common input for both LDOs; accepts 2.5V–5.5V; requires 2.2µF X5R/X7R ceramic bypass capacitor |
| GND | Ground Reference | Analog/digital ground return; must be connected to HSPAD and system ground plane |
| NC | No Connect | Pins 3 and 6 are unconnected internally; must remain unpopulated or floated (no routing) |
| EN2 | Enable Input LDO2 | Active-high logic control for 1.8V output; 0.2V max logic low, 1.2V min logic high; CMOS input |
| EN1 | Enable Input LDO1 | Active-high logic control for 3.3V output; independent sequencing from EN2 |
| VOUT2 | LDO2 Output | Regulated 1.8V output; auto-discharged via 30Ω NFET when EN2 = low |
| VOUT1 | LDO1 Output | Regulated 3.3V output; auto-discharged via 30Ω NFET when EN1 = low |
| HSPAD | Heatsink Pad | Exposed thermal pad; must be soldered to solid GND copper pour with ≥4 thermal vias (0.3–0.35mm dia) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | EN1/EN2 allow staggered power-up/down sequencing between 3.3V and 1.8V rails without external logic |
| µCap stability | Guaranteed stability with 2.2µF ceramic output caps - reduces footprint, cost, and ESR-related oscillation risk |
| Active output discharge | 30Ω internal pull-down per output eliminates external discharge resistors and ensures safe voltage ramp-down |
| Low-noise regulation | 146µVRMS output noise (10Hz–100kHz) supports noise-sensitive analog/RF subsystems |
| Thermal & current protection | Integrated foldback current limit (750mA typ) and thermal shutdown prevent damage under overload or poor heatsinking |
Applications
| Smartphone Baseband Power | Portable GPS Module Supply |
|---|---|
Use Scenario: Dual-rail power for application processor (3.3V I/O) and memory interface (1.8V DDR I/O) in compact handheld devices. IC Role / Device Role / Timing Role: Primary dual-output LDO supplying regulated, low-noise, sequenced voltages to SoC subsystems. Use Value: Eliminates need for discrete discharge resistors and enables fast, controlled power-down of memory rails to meet JEDEC retention requirements. |
Use Scenario: Powering GPS RF front-end (3.3V) and baseband ASIC (1.8V) in battery-operated navigation units. IC Role / Device Role / Timing Role: Low-quiescent-current dual LDO maintaining clean supply during satellite acquisition and tracking phases. Use Value: 70µA operating current extends battery runtime in always-on location services; 60dB PSRR rejects switching noise from PMU DC/DC stages. |
| Notebook Embedded Controller | Digital Still Camera Core Logic |
Use Scenario: Supplying EC firmware (3.3V) and sensor interface logic (1.8V) in ultra-thin notebook platforms with strict thermal envelope. IC Role / Device Role / Timing Role: Thermally efficient dual LDO replacing discrete regulators to reduce layer count and improve thermal margin. Use Value: ePad MSOP package with θJA = 64.4°C/W enables full 500mA/channel operation at 70°C ambient without derating. |
Use Scenario: Powering image signal processor (3.3V) and CMOS sensor interface (1.8V) in DSCs requiring rapid wake-from-sleep transitions. IC Role / Device Role / Timing Role: Fast-transient dual LDO enabling sub-100µs output stabilization after enable assertion. Use Value: 50µs typical turn-on time and 350mV dropout ensure reliable startup even as battery voltage drops to 3.0V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5356-S4YMME-TR | Same package and architecture; outputs 3.3V/1.2V instead of 3.3V/1.8V | Targets 1.2V core logic (e.g., ARM Cortex-M cores) rather than 1.8V I/O standards | Select when powering 1.2V digital cores alongside 3.3V peripherals; verify compatibility with target IC's VDDIO spec. |
| TSM1052-3318TR | Pin-compatible dual LDO (3.3V/1.8V), but higher quiescent current (120µA vs. 70µA) and no auto-discharge | Lacks active discharge; requires external 10kΩ pull-down resistors for safe rail collapse | Choose only if auto-discharge is unnecessary and layout allows added resistors; not drop-in for MIC5356-SGYMME-TR due to functional gap. |
Compared with MIC5356-SGYMME-TR, the MIC5356-S4YMME-TR offers identical thermal and transient performance but targets lower-voltage cores, while the TSM1052-3318TR lacks critical auto-discharge functionality - making it unsuitable for applications requiring controlled power-down without added components.
Availability
MIC5356-SGYMME-TR is available at Aetrix Electronics and suitable for smartphone baseband power, portable GPS module supply, and notebook embedded controller applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC5356-SGYMME-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 analog ICs before its acquisition by Microchip Technology in 2015. Its LDO portfolio emphasized micropower efficiency and small-footprint integration.
The MIC5356-SGYMME-TR belongs to Micrel's µCap dual-LDO family, designed specifically for space-constrained, battery-powered portable electronics needing dual-rail regulation with minimal external components and robust power sequencing.
FAQ
What is the maximum input voltage rating for the MIC5356-SGYMME-TR?
The MIC5356-SGYMME-TR has an absolute maximum input voltage (VIN) rating of +6V, but its specified operating range is +2.5V to +5.5V. Operation above 5.5V risks permanent damage, and sustained use near 6V violates the device's operational specification. Always maintain VIN within 2.5V–5.5V for reliable performance across –40°C to +125°C junction temperature.
Does the MIC5356-SGYMME-TR require external discharge resistors?
No - the MIC5356-SGYMME-TR integrates an active discharge circuit for both outputs: when either EN1 or EN2 is driven low, a 30Ω NFET connects the corresponding VOUT to GND. This eliminates the need for external bleed resistors, reduces BOM count, and ensures predictable, rapid rail collapse during shutdown sequences.
What is the thermal resistance (θJA) of the MIC5356-SGYMME-TR in its MSOP package?
The MIC5356-SGYMME-TR in the 8-pin ePad MSOP (MME) package has a junction-to-ambient thermal resistance (θJA) of 64.4°C/W under standard JEDEC PCB conditions (2s2p copper). Achieving this value requires proper thermal design: the exposed HSPAD must be soldered to a solid GND plane with ≥4 thermal vias (0.3–0.35mm diameter) to maximize heat dissipation.
Can the MIC5356-SGYMME-TR operate stably with no load on either output?
Yes - the MIC5356-SGYMME-TR remains stable and in regulation with zero load on either or both outputs. Unlike many legacy LDOs, its µCap architecture does not require minimum load current for stability, simplifying design for intermittent or burst-mode power applications such as sensor wake-up circuits or low-duty-cycle microcontrollers.
What output capacitor dielectric is recommended for the MIC5356-SGYMME-TR?
X5R or X7R ceramic dielectrics are recommended for the MIC5356-SGYMME-TR's 2.2µF output capacitors. These offer stable capacitance over temperature (±15% for X7R), low ESR, and small footprint. Y5V and Z5U dielectrics are explicitly discouraged due to >50% capacitance loss over temperature, which risks instability and degraded transient response.
MIC5356-SGYMME-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 0.8V @ 500mA, 0.8V @ 500mA
- Current - Output:
- 500mA, 500mA
- Current - Quiescent (Iq):
- 0.53 µA
- Current - Supply (Max):
- 200 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:
- 8-MSOP-EP
MIC5356-SGYMME-TR FAQ
1.How can I place an order for MIC5356-SGYMME-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5356-SGYMME-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 MIC5356-SGYMME-TR reliable?
The price and inventory of MIC5356-SGYMME-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5356-SGYMME-TR is usually 5 days.
3.What payment methods are accepted for MIC5356-SGYMME-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5356-SGYMME-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5356-SGYMME-TR?
MIC5356-SGYMME-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5356-SGYMME-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 MIC5356-SGYMME-TR?
For technical support, including MIC5356-SGYMME-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5356-SGYMME-TR requirements.
6.How does Aetrix verify that MIC5356-SGYMME-TR is sourced from the original manufacturer or authorized distributors?
All MIC5356-SGYMME-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 MIC5356-SGYMME-TR meets industry standards.
7.What is the process for return or replacement of MIC5356-SGYMME-TR?
All MIC5356-SGYMME-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5356-SGYMME-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 MIC5356-SGYMME-TR part is unused and in its original packaging.
Return procedure for MIC5356-SGYMME-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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