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Microchip Technology MIC5356-SCYMME-TR
- Part No.:
- MIC5356-SCYMME-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MIC5356-SCYMME-TR.pdf
- Description:
- IC REG LINEAR 1V/3.3V 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,301
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Product details
Overview
MIC5356-SCYMME-TR from Micrel is a dual-channel, micropower, low-dropout linear regulator delivering independent 500mA outputs at fixed 3.3V and 1.0V, with 70μA typical quiescent current (both outputs enabled), 350mV dropout at full load, and integrated active output discharge for rapid voltage decay during shutdown - designed for space-constrained, battery-powered portable electronics requiring stable dual-rail power.
For engineers reviewing the MIC5356-SCYMME-TR datasheet, MIC5356-SCYMME-TR pinout, MIC5356-SCYMME-TR application, or MIC5356-SCYMME-TR equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for dual-LDO selection in high-efficiency, thermally sensitive embedded systems.
Technical Context
The MIC5356-SCYMME-TR integrates two independent CMOS-based LDO regulators with separate active-high enable inputs (EN1/EN2), enabling selective power sequencing and rail isolation. Each channel delivers 500mA continuous output with ±2% initial accuracy and supports input voltages from 2.5V to 5.5V.
Unlike the MIC5355 variant, the MIC5356-SCYMME-TR includes an internal 30Ω NFET discharge path per output activated when EN1/EN2 are low, ensuring fast VOUT1/VOUT2 collapse without external circuitry. It achieves stable regulation with only 2.2µF ceramic output capacitors and maintains no-load stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V (VOUT1) and 1.0V (VOUT2); enables direct powering of I/O and core logic rails without external feedback. |
| Max Output Current | 500mA per channel; supports moderate-power digital subsystems like baseband processors or sensor hubs. |
| Dropout Voltage | 350mV typical at 500mA; allows operation with minimal VIN–VOUT headroom (e.g., 3.65V input for 3.3V rail). |
| Quiescent Current | 70μA typical with both outputs enabled; extends battery life in always-on standby modes. |
| Shutdown Current | <1μA typical; reduces system leakage during deep sleep or power-off states. |
| Output Discharge | 30Ω internal NFET per output; discharges 10µF load in ~300µs, meeting fast-power-down timing requirements. |
| PSRR | 60dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
Pinout & Package
Package: 8-pin ePad MSOP (MME), thermally enhanced with exposed heatsink pad (HSPAD) requiring connection to GND plane via thermal vias for optimal thermal performance (θJA = 64.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Supply Input | Common input for both LDOs; must be decoupled with ≥2.2µF ceramic capacitor to GND. |
| GND | Ground Reference | Analog/digital ground return; connects directly to HSPAD for lowest impedance path. |
| NC | No Connect | Pins 3 and 6 are unconnected internally; must remain floating or tied to GND per layout guidelines. |
| EN2 | LDO2 Enable Input | Active-high logic control for 1.0V output; drives high to enable, low to disable + activate discharge. |
| EN1 | LDO1 Enable Input | Active-high logic control for 3.3V output; independent of EN2 for flexible power sequencing. |
| VOUT2 | LDO2 Output | Regulated 1.0V supply; sourced from internal pass device and discharged via 30Ω NFET when EN2 = low. |
| VOUT1 | LDO1 Output | Regulated 3.3V supply; similarly discharged when EN1 = low; requires ≥2.2µF ceramic output capacitor. |
| HSPAD | Heatsink Pad | Exposed copper pad on bottom; must be soldered to solid GND plane with ≥4 thermal vias (0.3–0.35mm Ø) for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 500mA LDOs | Enables simultaneous, isolated regulation of two voltage domains (e.g., 3.3V I/O + 1.0V core) with independent enable control. |
| µCap stability with 2.2µF ceramics | Eliminates need for large tantalum or electrolytic capacitors, reducing board area and cost while improving reliability. |
| Active output discharge (MIC5356 only) | Removes external discharge resistors and associated BOM count; ensures predictable, fast rail collapse during shutdown. |
| ±2% output voltage accuracy | Meets tight tolerance requirements for modern low-voltage digital ICs without post-regulation trimming. |
| Thermal and current limiting | Protects against overloads and PCB hotspots; shuts down safely under sustained 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 (1.0V core) in compact smartphone mainboard. IC Role / Device Role / Timing Role: Primary dual-output LDO providing clean, sequenced, and rapidly dischargeable power rails. Use Value: Enables fast wake/sleep transitions via independent EN1/EN2 control and eliminates external discharge components, saving 2–3 mm² PCB area. |
Use Scenario: Powering GPS RF front-end (3.3V) and baseband ASIC (1.0V) in handheld navigation devices with aggressive battery life targets. IC Role / Device Role / Timing Role: Low-quiescent-current dual LDO maintaining regulation during intermittent GPS acquisition bursts. Use Value: 70μA operating IQ and <1μA shutdown current extend runtime between charges; 350mV dropout preserves margin with single-cell Li-ion input. |
| Notebook Subsystem Regulator | Digital Camera Sensor Interface |
Use Scenario: Dedicated power for USB-C controller (3.3V) and embedded security MCU (1.0V) in ultrabook platform design. IC Role / Device Role / Timing Role: Secondary LDO supplying isolated, low-noise rails where main PMIC lacks fine-grained control. Use Value: Independent enable pins allow precise power-up sequencing aligned with firmware boot flow; 60dB PSRR rejects noise from shared DC/DC input. |
Use Scenario: Powering CMOS image sensor analog front-end (3.3V) and digital logic block (1.0V) in DSLR or mirrorless camera bodies. IC Role / Device Role / Timing Role: Dual LDO delivering low-noise, stable bias for high-resolution imaging pipelines. Use Value: 146µV RMS output noise and excellent transient response prevent image artifacts during rapid exposure changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2023PDBVR | Single 3.3V LDO (500mA), no 1.0V rail or discharge function; 6.5μA IQ, smaller SOT-23-5 package. | Only supplies one rail; requires second regulator for 1.0V, increasing BOM and layout complexity. | Select if only 3.3V is needed and ultra-low IQ dominates design priority over dual-rail integration. |
| RT9080L-3310GJ6F | Dual fixed 3.3V/1.0V LDO (300mA each), no discharge, 25μA IQ per channel, 12-pin WDFN package. | Lower current rating limits use with higher-power peripherals; no auto-discharge increases shutdown delay. | Choose when 300mA per rail suffices and smaller footprint outweighs missing discharge functionality. |
Compared with MIC5356-SCYMME-TR, TPS7A2023PDBVR lacks dual-rail integration and discharge, while RT9080L-3310GJ6F trades 200mA/channel current headroom and discharge capability for reduced size - making MIC5356-SCYMME-TR optimal for 500mA dual-rail systems requiring fast, controlled power-down.
Availability
MIC5356-SCYMME-TR is available at Aetrix Electronics and suitable for smartphone baseband power, portable GPS modules, and notebook subsystem regulation requiring stable component supply across extended production lifecycles.
Supply support for MIC5356-SCYMME-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, analog, and mixed-signal ICs before its acquisition by Microchip Technology in 2015.
The MIC5356-SCYMME-TR belongs to Micrel's µCap LDO family, engineered for ultra-low-power, space-constrained portable electronics needing dual, independently controllable, and fast-discharging regulated rails.
FAQ
What is the output voltage configuration of the MIC5356-SCYMME-TR?
The MIC5356-SCYMME-TR provides fixed dual outputs: VOUT1 = 3.3V and VOUT2 = 1.0V. This configuration is laser-trimmed at wafer test and cannot be adjusted externally. The marking "SC" in the part number explicitly denotes the 3.3V/1.0V variant, confirmed in Micrel's official ordering information table.
Does the MIC5356-SCYMME-TR include output discharge functionality?
Yes, the MIC5356-SCYMME-TR includes an active discharge feature on both outputs. When either EN1 or EN2 is driven low, a 30Ω internal NFET connects the corresponding VOUT pin to GND, discharging external capacitance rapidly. This behavior is exclusive to MIC5356 variants and is documented in the Electrical Characteristics table under "Auto-Discharge NFET Resistance".
What package type and thermal characteristics apply to the MIC5356-SCYMME-TR?
The MIC5356-SCYMME-TR uses the 8-pin ePad MSOP (MME) package with an exposed thermal pad (HSPAD). Its junction-to-ambient thermal resistance (θJA) is 64.4°C/W. Effective thermal performance requires soldering the HSPAD to a solid GND plane with ≥4 thermal vias (0.3–0.35mm diameter) - details specified in the Package Information section of the datasheet.
What is the minimum output capacitor required for stable operation of the MIC5356-SCYMME-TR?
The MIC5356-SCYMME-TR requires a minimum 2.2µF ceramic output capacitor per channel for guaranteed stability. X5R or X7R dielectrics are recommended; Y5V is not advised due to excessive capacitance loss over temperature. This µCap compatibility eliminates need for larger, less reliable capacitor types.
How does the MIC5356-SCYMME-TR differ from the MIC5355-SCYMME-TR?
The MIC5356-SCYMME-TR adds active output discharge (30Ω NFET per rail) and slightly higher ground current (70μA vs. 65μA typical with both outputs enabled), while sharing identical output voltages, current rating, dropout, and package. The MIC5355-SCYMME-TR lacks discharge and is intended for applications where rail hold-up during disable is acceptable.
MIC5356-SCYMME-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:
- 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-TR FAQ
1.How can I place an order for MIC5356-SCYMME-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5356-SCYMME-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-SCYMME-TR reliable?
The price and inventory of MIC5356-SCYMME-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-SCYMME-TR is usually 5 days.
3.What payment methods are accepted for MIC5356-SCYMME-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5356-SCYMME-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5356-SCYMME-TR?
MIC5356-SCYMME-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5356-SCYMME-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-SCYMME-TR?
For technical support, including MIC5356-SCYMME-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5356-SCYMME-TR requirements.
6.How does Aetrix verify that MIC5356-SCYMME-TR is sourced from the original manufacturer or authorized distributors?
All MIC5356-SCYMME-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-SCYMME-TR meets industry standards.
7.What is the process for return or replacement of MIC5356-SCYMME-TR?
All MIC5356-SCYMME-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5356-SCYMME-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-SCYMME-TR part is unused and in its original packaging.
Return procedure for MIC5356-SCYMME-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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