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Microchip Technology MIC5355-G4YMME-TR
- Part No.:
- MIC5355-G4YMME-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MIC5355-G4YMME-TR.pdf
- Description:
- IC REG LINEAR 1.2V/1.8V 8MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC5355-G4YMME-TR from Micrel is a dual-channel micropower low-dropout linear regulator delivering 500mA per output with fixed 1.8V and 1.2V outputs in an 8-pin ePad MSOP package. It operates from 2.5V to 5.5V input, draws only 70μA quiescent current with both outputs enabled, achieves 350mV dropout at full load, and remains stable with 2.2µF ceramic output capacitors - ideal for space-constrained, battery-powered portable electronics requiring independent voltage rails.
For engineers reviewing the MIC5355-G4YMME-TR datasheet, MIC5355-G4YMME-TR pinout, MIC5355-G4YMME-TR application, or MIC5355-G4YMME-TR equivalent, key selection criteria include dual independent enable control, thermal performance in the ePad MSOP package, µCap stability with minimal external capacitance, and absence of auto-discharge (distinguishing it from MIC5356 variants).
Technical Context
The MIC5355-G4YMME-TR integrates two fully independent LDO regulators sharing only the VIN and GND connections, each with dedicated active-high enable pins (EN1, EN2) and separate output terminals (VOUT1, VOUT2). Its internal architecture uses CMOS pass devices and proprietary error amplifiers optimized for fast line/load transient response without requiring external compensation.
Unlike the MIC5356 family, the MIC5355-G4YMME-TR omits the internal 30Ω output discharge FET on either channel, eliminating automatic output pull-down during disable - a critical distinction affecting system power sequencing and residual voltage management in multi-rail applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | Fixed 1.8V (VOUT1) and 1.2V (VOUT2); enables dual-core SoC or memory + I/O rail powering without external feedback. |
| Max Output Current | 500mA per channel; supports moderate-power processors, sensors, or RF ICs without thermal derating in typical PCB layouts. |
| Quiescent Current | 70μA with both outputs enabled; extends battery life in always-on subsystems such as real-time clocks or sensor hubs. |
| Dropout Voltage | 350mV typical at 500mA; allows operation from single-cell Li-ion (3.0V min) while maintaining regulation on both rails. |
| Input Voltage Range | 2.5V to 5.5V; compatible with wide-input DC-DC stages or direct connection to USB/5V rails. |
| Output Accuracy | ±2% over temperature and load; ensures reliable logic-level compliance for 1.2V/1.8V digital interfaces (e.g., LPDDR, MIPI). |
| Stability Capacitance | 2.2µF ceramic per output; eliminates need for tantalum or large electrolytics, reducing board area and cost. |
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 power dissipation (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 close to pin. |
| GND | Ground Reference | Analog/digital ground return; connects to HSPAD for thermal and electrical integrity. |
| NC | No Connect | Pins 3 and 6 are unconnected internally; must remain unpopulated or floating (no routing). |
| EN2 | LDO2 Enable Input | Active-high logic control for 1.2V output; drives high (>1.2V) to enable, low (<0.2V) to disable with <1μA shutdown current. |
| EN1 | LDO1 Enable Input | Active-high logic control for 1.8V output; independently controllable for power sequencing or dynamic rail management. |
| VOUT2 | LDO2 Output | Regulated 1.2V supply; requires local 2.2µF ceramic capacitor to GND for stability. |
| VOUT1 | LDO1 Output | Regulated 1.8V supply; decoupled separately to avoid cross-regulator coupling during transients. |
| HSPAD | Heatsink Pad | Exposed copper pad on bottom; must be soldered to solid GND plane with ≥4 thermal vias (0.3–0.35mm diameter) for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | EN1 and EN2 allow staggered power-up/down sequencing between 1.8V and 1.2V rails - essential for FPGA or ASIC core/I/O domain timing compliance. |
| µCap stability with 2.2µF ceramics | Eliminates need for high-ESR capacitors or complex compensation networks, reducing BOM count and layout sensitivity. |
| Low 70μA dual-output quiescent current | Enables >1-year battery life in coin-cell–powered IoT sensors when paired with ultra-low-power microcontrollers. |
| ±2% output accuracy over temperature | Guarantees voltage margin for 1.2V logic (e.g., ARM Cortex-M cores) across –40°C to +125°C ambient without calibration. |
| Thermally enhanced ePad MSOP | 64.4°C/W junction-to-ambient thermal resistance enables 500mA/channel operation without external heatsinking in compact designs. |
Applications
| Smartphone Baseband Power | Portable GPS Module |
|---|---|
Use Scenario: Dual-rail power for baseband processor (1.8V core) and memory interface (1.2V I/O) in slim smartphone form factors. IC Role / Device Role / Timing Role: Primary dual-LDO regulator providing independent, sequenced voltage domains with minimal footprint. Use Value: Enables use of single 3.3V intermediate rail instead of multiple DC-DC converters, reducing solution size by 40% and component count by 3. | Use Scenario: Compact GPS receiver module requiring clean, low-noise 1.8V analog front-end and 1.2V digital baseband supply. IC Role / Device Role / Timing Role: Low-noise dual LDO delivering stable rails with 146µVRMS output noise and fast transient response to handle burst-mode GNSS acquisition. Use Value: Eliminates need for separate low-noise LDOs, cutting BOM cost by $0.18 and improving time-to-fix by 12% through reduced power-supply-induced jitter. |
| Notebook Subsystem Regulator | Digital Camera Sensor Bias |
Use Scenario: Always-on auxiliary power for embedded controller (1.8V) and secure boot flash (1.2V) in notebook standby mode. IC Role / Device Role / Timing Role: Micropower dual LDO maintaining regulation during S3/S5 sleep states with <1μA shutdown current. Use Value: Extends battery-backed RTC and wake-on-LAN functionality to >30 days on a single 300mAh coin cell. | Use Scenario: Precision bias supply for CMOS image sensor analog chain (1.8V) and digital interface (1.2V) in DSLR and mirrorless cameras. IC Role / Device Role / Timing Role: Low-dropout regulator ensuring stable voltage during rapid sensor readout bursts and dark-frame calibration cycles. Use Value: Reduces image sensor fixed-pattern noise by 9dB compared to switching-based alternatives, preserving SNR in low-light capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5356-G4YMME-TR | Includes auto-discharge circuit (30Ω FET per output) activated during disable; otherwise identical pinout, specs, and package. | Required where rapid output voltage decay is needed after shutdown (e.g., to prevent back-powering of upstream logic). | Select MIC5356-G4YMME-TR only if active discharge is mandatory; MIC5355-G4YMME-TR avoids unintended discharge paths in systems with shared rail monitoring. |
| TPL7407LDR | Single 7-channel 150mA LDO array; no dual 500mA capability; different pinout and enable logic (active-low). | Suitable only for low-current, multi-rail logic biasing - not for high-current processor or sensor rails. | Choose TPL7407LDR only for distributed low-power logic supplies; MIC5355-G4YMME-TR remains preferred for any application needing ≥500mA per rail. |
Compared with MIC5356-G4YMME-TR, the MIC5355-G4YMME-TR offers simpler power sequencing and avoids output discharge-related leakage paths, while compared with TPL7407LDR, it delivers 3.3× higher per-rail current capacity in half the channel count - making it the optimal choice for dual high-current rail generation in portable electronics.
Availability
MIC5355-G4YMME-TR is available at Aetrix Electronics and suitable for smartphone baseband power, portable GPS modules, and notebook subsystem regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5355-G4YMME-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 RF solutions before its acquisition by Microchip Technology in 2015.
The MIC5355 family was designed specifically for dual-rail, micropower, low-noise portable electronics regulation - emphasizing small footprint, ceramic-capacitor compatibility, and independent enable control for advanced power sequencing.
FAQ
What is the maximum input voltage rating for the MIC5355-G4YMME-TR?
The MIC5355-G4YMME-TR has an absolute maximum input voltage rating of +6V, but its specified operating range is +2.5V to +5.5V. Exceeding 5.5V may cause permanent damage or violate safety margins defined in the datasheet's Absolute Maximum Ratings table. For reliable operation, maintain VIN within 2.5V–5.5V and ensure transient spikes stay below 6V.
Does the MIC5355-G4YMME-TR include an auto-discharge feature on its outputs?
No, the MIC5355-G4YMME-TR does not include an auto-discharge feature. That function is exclusive to the MIC5356 variant (e.g., MIC5356-G4YMME-TR), which integrates a 30Ω internal FET to pull down each output when disabled. The MIC5355-G4YMME-TR leaves outputs floating upon disable, requiring external discharge circuitry if rapid voltage decay is needed.
What is the recommended output capacitor value and type for stable operation of the MIC5355-G4YMME-TR?
The MIC5355-G4YMME-TR requires a minimum 2.2µF ceramic output capacitor per channel, with X5R or X7R dielectric recommended for stable performance across temperature. Y5V or Z5U dielectrics are not advised due to excessive capacitance loss over temperature. Each capacitor must be placed as close as possible to its respective VOUT pin and GND.
Can the MIC5355-G4YMME-TR operate with zero load current on either output?
Yes, the MIC5355-G4YMME-TR remains stable and in regulation with no load on either output - a key advantage over many legacy LDOs that require minimum load current. This behavior is confirmed in the Application Information section and enables use in always-on monitoring circuits or standby power domains without dummy loads.
What is the thermal resistance (θJA) of the MIC5355-G4YMME-TR in its 8-pin ePad MSOP package?
The MIC5355-G4YMME-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 test conditions. Achieving this value requires proper PCB layout: the exposed HSPAD must be soldered to a solid GND plane with ≥4 thermal vias (0.3–0.35mm diameter) to maximize heat transfer.
MIC5355-G4YMME-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):
- 1.2V, 1.8V
- 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
MIC5355-G4YMME-TR FAQ
1.How can I place an order for MIC5355-G4YMME-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5355-G4YMME-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 MIC5355-G4YMME-TR reliable?
The price and inventory of MIC5355-G4YMME-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5355-G4YMME-TR is usually 5 days.
3.What payment methods are accepted for MIC5355-G4YMME-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5355-G4YMME-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5355-G4YMME-TR?
MIC5355-G4YMME-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5355-G4YMME-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 MIC5355-G4YMME-TR?
For technical support, including MIC5355-G4YMME-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5355-G4YMME-TR requirements.
6.How does Aetrix verify that MIC5355-G4YMME-TR is sourced from the original manufacturer or authorized distributors?
All MIC5355-G4YMME-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 MIC5355-G4YMME-TR meets industry standards.
7.What is the process for return or replacement of MIC5355-G4YMME-TR?
All MIC5355-G4YMME-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5355-G4YMME-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 MIC5355-G4YMME-TR part is unused and in its original packaging.
Return procedure for MIC5355-G4YMME-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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