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Microchip Technology MIC5356-SCYMME
- Part No.:
- MIC5356-SCYMME
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MIC5356-SCYMME.pdf
- Description:
- IC REG LINEAR 1V/3.3V 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
MIC5356-SCYMME from Micrel is a dual-channel, micropower, low-dropout linear regulator delivering two independent 500mA outputs with fixed 3.3V and 1.0V voltages 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 output discharge (30Ω) on disable-ideal for battery-powered portable electronics requiring fast transient response and ultra-low quiescent current.
For engineers reviewing the MIC5356-SCYMME datasheet, MIC5356-SCYMME pinout, MIC5356-SCYMME application, or MIC5356-SCYMME equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative options, and supply-ready availability details specific to the MIC5356-SCYMME variant.
Technical Context
The MIC5356-SCYMME integrates two independent LDO regulators with CMOS-based enable control, each supporting up to 500mA load and exhibiting typical dropout of 350mV at full load. Its µCap architecture enables stable operation with minimal 2.2µF ceramic output capacitance and delivers 60dB ripple rejection at 1kHz.
Unlike the MIC5355 series, the MIC5356-SCYMME includes an internal 30Ω auto-discharge NFET per output activated when EN1/EN2 are low, ensuring rapid VOUT1/VOUT2 voltage decay during shutdown-critical for power sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, dual-cell alkaline, or regulated 3.3V/5V rails without external pre-regulation. |
| Output Voltages | 3.3V / 1.0V - fixed dual-rail configuration optimized for I/O and core logic supply in portable SoC designs. |
| Quiescent Current | 70µA (both outputs enabled) - extends battery life in always-on subsystems such as GPS receivers or sensor hubs. |
| Dropout Voltage | 350mV at 500mA - enables >90% efficiency at 3.3V output with 3.6V Li-ion input under full load. |
| Output Capacitor | 2.2µF ceramic minimum - eliminates need for bulky tantalum or electrolytic capacitors, reducing board area and cost. |
| Auto-Discharge | 30Ω internal NFET per output - discharges output caps within milliseconds upon disable, preventing back-powering or latch-up in sequenced power domains. |
| Thermal Resistance | 64.4°C/W (θJA, ePad MSOP) - enables 500mA dual-output operation up to 70°C ambient with standard PCB copper pour. |
Pinout & Package
Package: 8-pin ePad MSOP (MME), thermally enhanced with exposed heatsink pad (HSPAD) requiring connection to ground plane via thermal vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Supply Input | Common input rail for both LDOs; must be decoupled with ≥2.2µF ceramic capacitor to GND. |
| GND | Ground Reference | Analog/digital ground return for regulation circuitry and enable logic; tied to HSPAD for thermal conduction. |
| NC | No Connect | Pins 3 and 6 are unconnected internally-must remain unpopulated or left floating (no routing required). |
| EN2 | LDO2 Enable Input | Active-high CMOS input controlling 1.0V output; <0.2V = off, >1.2V = on; must not float. |
| EN1 | LDO1 Enable Input | Active-high CMOS input controlling 3.3V output; independent control enables flexible power sequencing. |
| VOUT2 | LDO2 Output | Regulated 1.0V supply; includes internal 30Ω discharge path when EN2 = low. |
| VOUT1 | LDO1 Output | Regulated 3.3V supply; includes internal 30Ω discharge path when EN1 = low. |
| HSPAD | Heatsink Pad | Exposed thermal pad; must be soldered to solid GND plane with ≥4 thermal vias (0.3–0.35mm diameter) for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Independent Enables | EN1 and EN2 allow staggered startup/shutdown of 3.3V and 1.0V rails-essential for FPGA or ASIC core/I/O sequencing. |
| µCap Stability | Guaranteed stability with 2.2µF X5R/X7R ceramic output capacitors-reduces BOM count and improves reliability vs. electrolytics. |
| Auto-Discharge Circuit | 30Ω internal NFET per output actively pulls VOUT to GND when disabled-prevents residual voltage from interfering with downstream logic states. |
| Low-Noise Regulation | 146µVRMS output noise (10Hz–100kHz) supports noise-sensitive analog circuits like ADC references or RF bias rails. |
| Thermal & Current Protection | Integrated foldback current limiting and thermal shutdown prevent damage during overload or poor heatsinking conditions. |
Applications
| Smartphone Baseband Power | Portable GPS Receiver |
|---|---|
Use Scenario: Dual-rail power for application processor (3.3V I/O) and memory interface (1.0V core) in compact smartphone PCBs. IC Role / Device Role / Timing Role: Primary dual-LDO regulator providing independently controlled, low-noise, sequenced supplies. Use Value: Enables clean power delivery with <70µA quiescent current and sub-100µs turn-on time-extending standby battery life while meeting tight voltage accuracy (±2%) requirements. | Use Scenario: Power management for GPS chipset requiring fast wake-from-sleep and rapid output discharge between navigation sessions. IC Role / Device Role / Timing Role: Dual-output LDO with auto-discharge ensures immediate VOUT collapse on disable-eliminating hold-up time that could delay next acquisition cycle. Use Value: 30Ω discharge path reduces 1.0V rail decay time to <1ms, enabling GPS modules to meet 1-second cold-start timing budgets. |
| Digital Camera Sensor Core | Handheld Medical Monitor |
Use Scenario: Supplying image sensor digital core (1.0V) and interface logic (3.3V) in space-constrained DSC modules. IC Role / Device Role / Timing Role: Micropower dual LDO delivering stable, low-noise rails with minimal external components. Use Value: 2.2µF ceramic capacitor compatibility shrinks total solution size by >40% versus traditional LDOs requiring 10µF+ tantalum, critical for ultra-thin camera designs. | Use Scenario: Powering microcontroller (3.3V) and analog front-end (1.0V) in battery-operated patient monitors with strict EMC and reliability requirements. IC Role / Device Role / Timing Role: Low-ESR-stable regulator with 60dB PSRR at 1kHz suppressing switching noise from adjacent DC-DC converters. Use Value: Maintains ±2% output accuracy across –40°C to +125°C junction range-ensuring consistent ADC reference performance in variable clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-micropower LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5356-S4YMME | Same package and architecture; outputs 3.3V/1.2V instead of 3.3V/1.0V. | Suitable where higher second-rail voltage is needed for 1.2V-core processors or DDR I/O. | Select MIC5356-S4YMME if system requires 1.2V instead of 1.0V; identical pinout and enable behavior. |
| TPS7A2023PDBVR | Single 3.3V LDO (not dual); 300mA output; 6.5µA IQ; no auto-discharge. | Only replaces the 3.3V channel-not a functional dual-rail substitute for MIC5356-SCYMME. | Use only as partial replacement for 3.3V rail where 1.0V rail is sourced elsewhere; requires additional regulator and layout changes. |
Compared with MIC5356-S4YMME, the MIC5356-SCYMME provides tighter 1.0V rail matching for ultra-low-voltage cores, while TPS7A2023PDBVR lacks dual output, discharge, and current capability-making it unsuitable as a drop-in or functional replacement.
Availability
MIC5356-SCYMME is available at Aetrix Electronics and suitable for smartphone baseband power, portable GPS receivers, and digital camera sensor core applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MIC5356-SCYMME 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 high-performance analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5355/6 product line was designed specifically for space-constrained, battery-powered portable electronics needing dual, micropower, low-dropout regulation with fast transient response and integrated power sequencing features.
FAQ
What is the output voltage configuration of the MIC5356-SCYMME?
The MIC5356-SCYMME provides fixed dual outputs: 3.3V on VOUT1 and 1.0V on VOUT2. This configuration is laser-trimmed during manufacturing and cannot be adjusted externally. The marking code "56SC" on the device confirms the 3.3V/1.0V variant, distinct from other MIC5356 versions like 56S4 (3.3V/1.2V) or 56G4 (1.8V/1.2V).
Does the MIC5356-SCYMME include auto-discharge functionality?
Yes, the MIC5356-SCYMME includes an active discharge circuit on both outputs. When either EN1 or EN2 is driven low, a 30Ω internal NFET connects the corresponding VOUT pin to GND, rapidly discharging external capacitors. This feature is exclusive to the MIC5356 family and is not present in the MIC5355 variants.
What is the minimum output capacitor required for stable operation of the MIC5356-SCYMME?
The MIC5356-SCYMME requires a minimum 2.2µF ceramic output capacitor per rail for guaranteed stability. X5R or X7R dielectrics are recommended; Y5V is not advised due to excessive capacitance loss over temperature. Larger values do not improve regulation performance but may marginally extend transient recovery time.
Can the MIC5356-SCYMME operate with no load on either output?
Yes, the MIC5356-SCYMME remains stable and in regulation with zero load on either or both outputs. Unlike many LDOs requiring minimum load current, its µCap architecture maintains loop stability down to 0mA-enabling use in standby modes where one rail may be idle while the other remains active.
What thermal considerations apply to the MIC5356-SCYMME in 8-pin ePad MSOP package?
The MIC5356-SCYMME in the 8-pin ePad MSOP (MME) package has a junction-to-ambient thermal resistance (θJA) of 64.4°C/W. For dual 500mA operation at 3.0V input, power dissipation reaches ~0.85W; using the formula TA = TJ(MAX) − (PD × θJA), maximum ambient temperature is ~70°C with proper PCB thermal design including grounded HSPAD and ≥4 thermal vias.
MIC5356-SCYMME Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V, 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-SCYMME FAQ
1.How can I place an order for MIC5356-SCYMME through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5356-SCYMME 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-SCYMME reliable?
The price and inventory of MIC5356-SCYMME are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5356-SCYMME is usually 5 days.
3.What payment methods are accepted for MIC5356-SCYMME?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5356-SCYMME transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5356-SCYMME?
MIC5356-SCYMME orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5356-SCYMME 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-SCYMME?
For technical support, including MIC5356-SCYMME datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5356-SCYMME requirements.
6.How does Aetrix verify that MIC5356-SCYMME is sourced from the original manufacturer or authorized distributors?
All MIC5356-SCYMME 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-SCYMME meets industry standards.
7.What is the process for return or replacement of MIC5356-SCYMME?
All MIC5356-SCYMME units undergo pre-shipment inspection (PSI). If there is an issue with MIC5356-SCYMME, 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-SCYMME part is unused and in its original packaging.
Return procedure for MIC5356-SCYMME:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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