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Microchip Technology MIC5365-3.3YD5-T5
- Part No.:
- MIC5365-3.3YD5-T5
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC5365-3.3YD5-T5.pdf
- Description:
- IC REG LIN 3.3V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
MIC5365-3.3YD5-T5 from Micrel is a fixed-output 3.3V, 150mA low-dropout linear regulator in a 5-pin TSOT23 package, delivering ±2% initial output accuracy, 155mV dropout at full load, and 29µA quiescent current - optimized for space-constrained portable electronics requiring stable low-noise power under battery-voltage variation.
For engineers reviewing the MIC5365-3.3YD5-T5 datasheet, MIC5365-3.3YD5-T5 pinout, MIC5365-3.3YD5-T5 application, or MIC5365-3.3YD5-T5 equivalent, key selection criteria include guaranteed 150mA output with thermal shutdown, compatibility with 1µF ceramic output capacitors, ultra-low ground current in shutdown (<1µA), and operation across –40°C to +125°C junction temperature.
Technical Context
The MIC5365-3.3YD5-T5 implements a CMOS-based LDO architecture with active-high enable control and internal current limiting. It maintains regulation down to 2.5V input while sustaining 150mA output, with PSRR of 70dB at low frequencies and 65dB up to 10kHz.
Its thermal shutdown and foldback current limit protect against overloads without external components. The device remains stable with only 1µF X5R/X7R ceramic capacitors on input and output - no ESR requirements - and supports zero-load operation critical for standby power integrity in CMOS RAM keep-alive circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% (initial), ±3% over –40°C to +125°C - ensures reliable logic-level supply for 3.3V I/O domains. |
| Max Output Current | 150mA guaranteed - sufficient to power baseband processors, RF transceivers, or sensor subsystems in handheld devices. |
| Dropout Voltage | 155mV @ 150mA - enables operation from 3.455V input, supporting single-cell Li-ion (3.6V nominal) down to ~3.0V under discharge. |
| Quiescent Current | 29µA typical - minimizes battery drain during active operation; drops to <1µA in shutdown mode. |
| PSRR | 70dB @ DC–1kHz, 65dB @ 1–10kHz - suppresses switching noise from adjacent DC/DC converters in mixed-signal PCB layouts. |
| Stability | Stable with ≥1µF ceramic output capacitor (X5R/X7R) - eliminates need for tantalum or aluminum electrolytic, reducing BOM cost and footprint. |
| Operating Temp | –40°C to +125°C junction - qualified for automotive infotainment modules and industrial handhelds with extended thermal envelopes. |
Pinout & Package
Package: 5-Pin Thin SOT23 (TSOT23-5), RoHS-compliant, 1.6mm × 2.9mm footprint, exposed heatsink pad (EP) for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Supply Input | Accepts 2.5V–5.5V input; requires 1µF ceramic decoupling to GND for stability and high-frequency noise rejection. |
| 2 (GND) | Ground Reference | Primary return path for load and quiescent current; must be connected directly to low-impedance PCB ground plane. |
| 3 (EN) | Enable Input | Active-high CMOS input; drives output ON when ≥1.2V, OFF when ≤0.2V; must not float - tie to VIN or microcontroller GPIO. |
| 4 (NC) | No Connect | Internally unconnected; leave unpopulated or floating - no electrical function or thermal role. |
| 5 (VOUT) | Regulated Output | Delivers stable 3.3V to load; requires ≥1µF ceramic capacitor to GND for transient response and loop stability. |
| EP | Exposed Heatsink Pad | Thermally connects die to PCB copper; must be soldered to solid ground plane for optimal θJA = 253°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small TSOT23-5 package | 1.6mm × 2.9mm footprint with exposed pad - saves >75% board area vs. standard SOT23, enabling dense portable PCB layouts. |
| Low-noise regulation | 200µVRMS output noise (10Hz–100kHz) - preserves signal integrity in ADC reference, audio codec, or RF front-end power rails. |
| Zero-off-mode shutdown | Ground current <1µA when EN = low - extends battery life in sleep states without external disconnect switches. |
| Full fault protection | Integrated thermal shutdown and current limiting - prevents damage during short-circuit or overload without external circuitry. |
| Wide input range | 2.5V–5.5V operation - supports direct connection to single-cell Li-ion, USB VBUS, or multi-cell alkaline supplies. |
Applications
| Mobile Phone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Powering ARM Cortex-A/M series application processors and memory interfaces in slim smartphone designs. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying core I/O voltage for SoC peripherals and SDIO/MMC controllers. Use Value: 155mV dropout enables sustained operation down to 3.455V input, extending usable battery range by ~12% versus higher-dropout alternatives. | Use Scenario: Providing clean, low-noise bias to CMOS image sensors and ISP power domains in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise 3.3V supply for analog front-end and pixel array clocking circuits. Use Value: 200µVRMS noise and 70dB PSRR prevent image artifacts caused by switching supply coupling into sensor analog paths. |
| GPS Receiver Module Supply | Handheld PDA System Rail |
Use Scenario: Delivering regulated 3.3V to GPS/GNSS RF front-ends and baseband ICs in battery-powered navigation devices. IC Role / Device Role / Timing Role: Dedicated LDO isolating sensitive GNSS receiver circuitry from noisy system power rails. Use Value: Stable regulation at 150mA with <29µA quiescent current ensures >200-hour battery life in always-on tracking mode. | Use Scenario: Powering display drivers, touch controllers, and flash memory in ruggedized PDAs used in field service applications. IC Role / Device Role / Timing Role: Main 3.3V system rail supporting mixed-signal peripherals and real-time OS execution. Use Value: –40°C to +125°C operating range and thermal shutdown ensure reliability in outdoor environments with wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 300mA rated, 6µA quiescent current, but 350mV dropout @ 250mA - higher dropout limits low-VIN headroom. | Higher output current margin suits future-proofing; lower IQ benefits ultra-long-life coin-cell designs. | Select when >150mA headroom or sub-10µA IQ is required; verify thermal derating at 150mA in TO-92. |
| Torex XC6206P332MR-G | 150mA rated, 1.0µA IQ in shutdown, but only 2% accuracy over 0°C–70°C - reduced temp range vs. MIC5365-3.3YD5-T5. | Better shutdown IQ for deep-sleep systems; narrower temp spec limits use in automotive or industrial ambient. | Select for cost-sensitive consumer wearables where full –40°C to +125°C qualification is unnecessary. |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, the MIC5365-3.3YD5-T5 provides superior thermal robustness (125°C max junction), tighter accuracy over full temperature range, and proven stability with minimal 1µF ceramics - making it optimal for space-constrained, thermally demanding portable designs.
Availability
MIC5365-3.3YD5-T5 is available at Aetrix Electronics and suitable for mobile phones, GPS receivers, digital cameras, and handheld PDAs requiring stable component supply with consistent parametric performance and long-term lifecycle support.
Supply support for MIC5365-3.3YD5-T5 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., now part of Microchip Technology, was a fabless semiconductor company specializing in high-performance analog and power management ICs for communications, computing, and portable electronics.
The MIC5365 family was designed specifically for ultra-compact, battery-powered devices needing high PSRR, low IQ, and guaranteed 150mA output in sub-3mm² packages - targeting next-generation smartphones, wearables, and IoT edge nodes.
FAQ
What is the maximum input voltage rating for the MIC5365-3.3YD5-T5?
The MIC5365-3.3YD5-T5 has an absolute maximum input voltage of 6V, but its recommended operating input range is 2.5V to 5.5V. Exceeding 5.5V may trigger internal protection or cause permanent damage. For reliable 3.3V output, VIN must remain ≥3.455V (3.3V + 155mV dropout) at 150mA load.
Does the MIC5365-3.3YD5-T5 require an external discharge resistor for output voltage decay?
No - the MIC5365-3.3YD5-T5 does not include auto-discharge functionality. That feature is exclusive to the MIC5366 variant (e.g., MIC5366-3.3YD5). When disabled via EN, the MIC5365-3.3YD5-T5 output floats; an external pull-down resistor is required if rapid discharge is needed for system safety or sequencing.
Can the MIC5365-3.3YD5-T5 operate stably with a 0.47µF ceramic output capacitor?
No - the MIC5365-3.3YD5-T5 requires a minimum 1µF ceramic output capacitor (X5R or X7R dielectric) for guaranteed stability across temperature and load. Using 0.47µF risks oscillation or poor transient response, especially at high frequencies or near temperature extremes. Always adhere to the 1µF minimum specified in the datasheet.
What is the thermal resistance (θJA) of the MIC5365-3.3YD5-T5 in its TSOT23-5 package?
The MIC5365-3.3YD5-T5 has a junction-to-ambient thermal resistance (θJA) of 253°C/W when mounted on a standard JEDEC 2-layer test board with the exposed pad soldered to a 1-in² copper area. Actual θJA improves with larger copper pours or internal ground planes, enabling 150mA continuous operation up to ~95°C ambient at 3.6V input.
Is the MIC5365-3.3YD5-T5 pin-compatible with other members of the MIC5365 family?
Yes - all MIC5365 variants in the TSOT23-5 (YD5) package share identical pinout: Pin 1 = VIN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = VOUT. Voltage variants (e.g., MIC5365-2.8YD5, MIC5365-1.8YD5) are drop-in replacements; only output voltage and marking differ - no PCB redesign is needed when changing output levels.
MIC5365-3.3YD5-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.31V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 39 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB ~ 65dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MIC5365-3.3YD5-T5 FAQ
1.How can I place an order for MIC5365-3.3YD5-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5365-3.3YD5-T5 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 MIC5365-3.3YD5-T5 reliable?
The price and inventory of MIC5365-3.3YD5-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5365-3.3YD5-T5 is usually 5 days.
3.What payment methods are accepted for MIC5365-3.3YD5-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5365-3.3YD5-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5365-3.3YD5-T5?
MIC5365-3.3YD5-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5365-3.3YD5-T5 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 MIC5365-3.3YD5-T5?
For technical support, including MIC5365-3.3YD5-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5365-3.3YD5-T5 requirements.
6.How does Aetrix verify that MIC5365-3.3YD5-T5 is sourced from the original manufacturer or authorized distributors?
All MIC5365-3.3YD5-T5 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 MIC5365-3.3YD5-T5 meets industry standards.
7.What is the process for return or replacement of MIC5365-3.3YD5-T5?
All MIC5365-3.3YD5-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC5365-3.3YD5-T5, 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 MIC5365-3.3YD5-T5 part is unused and in its original packaging.
Return procedure for MIC5365-3.3YD5-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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