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Microchip Technology MIC5317-1.2YD5-TR
- Part No.:
- MIC5317-1.2YD5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC5317-1.2YD5-TR.pdf
- Description:
- IC REG LIN 1.2V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
MIC5317-1.2YD5-TR from Microchip Technology is a high-performance 150 mA low-dropout linear regulator delivering a fixed 1.2 V output, operating from 2.5 V to 6.0 V input, with 2% initial output accuracy, 155 mV dropout at full load, and stable operation using only 1 μF ceramic output capacitance. It serves as a compact, low-noise power supply for space-constrained digital subsystems in portable and USB-powered devices.
For engineers reviewing the MIC5317-1.2YD5-TR datasheet, MIC5317-1.2YD5-TR pinout, MIC5317-1.2YD5-TR application, or MIC5317-1.2YD5-TR equivalent, key selection criteria include its TSOT23-5 package footprint, active-high enable functionality, thermal shutdown protection, PSRR of 70 dB at 1 kHz, and guaranteed operation across –40°C to +125°C junction temperature.
Technical Context
The MIC5317-1.2YD5-TR implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor-optimized for fast transient response and minimal quiescent current. Its design supports zero-current shutdown mode (≤1 μA) via active-high EN pin and maintains regulation under no-load conditions.
It achieves 70 dB PSRR up to 10 kHz and delivers 150 mA output while sustaining <29 μA ground current at light loads. The device is thermally protected and includes foldback current limiting, but is explicitly not suitable for RF transmitter systems per manufacturer specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% (initial accuracy), stable over –40°C to +125°C junction range |
| Input Voltage Range | 2.5 V to 6.0 V - enables direct use with USB 5 V, 3.3 V rails, or 6 V AC adapters |
| Max Output Current | 150 mA - sufficient for powering core logic, sensors, or interface ICs in compact systems |
| Dropout Voltage | 155 mV @ 150 mA - ensures regulation down to VIN = 1.355 V, critical for battery-end-of-life operation |
| Quiescent Current | 29 μA typical - minimizes standby power loss in always-on or low-power wake-up circuits |
| PSRR | 70 dB @ 1 kHz - suppresses ripple from noisy switching supplies feeding the LDO input |
| Enable Threshold | Logic-high EN ≥1.2 V, logic-low EN ≤0.2 V - compatible with standard 1.8 V/3.3 V GPIO without level shifting |
Pinout & Package
Package: 5-Lead TSOT23-5 (D5), RoHS-compliant, 2.9 mm × 1.6 mm × 0.9 mm body height, exposed thermal pad (EP) connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Supply Input | Primary DC input (2.5–6.0 V); requires 1 μF ceramic bypass capacitor to GND |
| 2 - EN | Enable Control | Active-high digital control; must be pulled high (>1.2 V) to enable output; floating prohibited |
| 3 - VOUT | Regulated Output | Fixed 1.2 V supply rail; stable with ≥1 μF ceramic output capacitor (X5R/X7R) |
| 4 - GND | Ground Reference | Analog/digital return path; connects internally to EP for thermal conduction |
| 5 - NC | No Connect | Not internally bonded; must remain unconnected on PCB; no routing or stitching |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small TSOT23-5 footprint | 2.9 mm × 1.6 mm area - reduces board space vs. SOT23-5 by ~30%, ideal for USB dongles and wearables |
| Low-noise regulation | 200 μVRMS output noise (10 Hz–100 kHz) - preserves signal integrity in ADC references and RF receivers |
| Zero-off-mode shutdown | ≤1 μA shutdown current - enables true power gating in battery-backed memory or sleep-state subsystems |
| Robust fault protection | Thermal shutdown + current limit (200–550 mA) - prevents damage during short-circuit or overload events |
| Wide temperature operation | –40°C to +125°C junction range - qualified for industrial and automotive under-hood auxiliary rails |
Applications
| USB Dongles | Wireless LAN Modules |
|---|---|
Use Scenario: Compact Wi-Fi/Bluetooth USB adapter requiring regulated 1.2 V for baseband ICs and RF front-end biasing. IC Role / Device Role / Timing Role: Primary 1.2 V LDO supplying core voltage to SoC and transceiver ICs. Use Value: Enables single-supply operation from 5 V USB bus while maintaining tight voltage tolerance and low noise for sensitive RF sections. |
Use Scenario: Miniaturized 2.4 GHz/5 GHz WLAN module integrated into laptops or IoT gateways. IC Role / Device Role / Timing Role: Dedicated low-noise 1.2 V rail for PHY layer logic and clock generation circuitry. Use Value: PSRR >70 dB suppresses switching noise from nearby DC/DC converters, reducing EVM degradation in OFDM signals. |
| Battery-Powered Cameras | Digital Tablet Core Rails |
Use Scenario: Digital still/video camera using lithium-ion battery (3.0–4.2 V) to power image sensor interface and ISP core. IC Role / Device Role / Timing Role: Secondary LDO generating clean 1.2 V for sensor analog front-end and pixel processing blocks. Use Value: 155 mV dropout extends usable battery life by enabling regulation until cell voltage drops to 1.355 V. |
Use Scenario: Low-power tablet SoC requiring tightly regulated 1.2 V core voltage during dynamic DVFS scaling. IC Role / Device Role / Timing Role: Core voltage regulator supporting CPU/GPU voltage domains with fast load transient response. Use Value: Excellent line/load transient response minimizes voltage droop during burst processing, preventing timing violations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | 150 mA, 1.2 V fixed, SOT23-3 package, 170 mV dropout @ 250 mA, 2.3 μA IQ | No enable pin; 3-pin configuration limits control flexibility in power-sequenced systems | Select when board space is extremely constrained and enable control is unnecessary |
| Torex XC6210B122MR-G | 150 mA, 1.2 V fixed, SOT25 package, 200 mV dropout @ 150 mA, 1.0 μA IQ in shutdown | Active-low CE pin; different pinout (VIN–GND–VOUT–CE–NC) requires layout change | Prefer when ultra-low shutdown current is prioritized over pin compatibility |
Compared with MCP1700T-1202E/TT and XC6210B122MR-G, the MIC5317-1.2YD5-TR uniquely combines active-high enable, TSOT23-5 pinout, and 70 dB PSRR - making it optimal for USB-powered designs needing both controllability and noise immunity.
Availability
MIC5317-1.2YD5-TR is available at Aetrix Electronics and suitable for USB dongles, wireless LAN modules, and battery-powered cameras requiring stable component supply with full RoHS compliance and traceable lot data.
Supply support for MIC5317-1.2YD5-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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with broad industrial and automotive qualification coverage.
The MIC5317 product line delivers ultra-compact, high-PSRR LDOs targeting space- and noise-sensitive applications including portable connectivity, imaging, and embedded computing subsystems.
FAQ
What is the output voltage tolerance of the MIC5317-1.2YD5-TR over temperature?
The MIC5317-1.2YD5-TR guarantees ±3.0% output voltage variation over the full –40°C to +125°C junction temperature range, with ±2.0% initial accuracy at +25°C. This ensures reliable 1.2 V regulation for core logic even under extreme thermal stress in enclosed or high-power-density environments where the MIC5317-1.2YD5-TR operates.
Can the MIC5317-1.2YD5-TR operate with only 1 µF output capacitance?
Yes - the MIC5317-1.2YD5-TR is specifically designed and characterized for stability with a minimum 1 µF X5R or X7R ceramic output capacitor. Larger values do not improve performance significantly, and Y5V dielectrics are discouraged due to excessive capacitance loss over temperature. This simplifies BOM and layout for the MIC5317-1.2YD5-TR.
Does the MIC5317-1.2YD5-TR support reverse-voltage protection?
No - the MIC5317-1.2YD5-TR does not include reverse-voltage protection. Applying reverse polarity to VIN or VOUT may cause permanent damage. External protection diodes or MOSFET-based reverse-polarity circuits must be added if system-level reverse-input risk exists. This limitation applies strictly to the MIC5317-1.2YD5-TR and is documented in Absolute Maximum Ratings.
What is the thermal resistance (θJA) of the MIC5317-1.2YD5-TR package?
The MIC5317-1.2YD5-TR uses the TSOT23-5 (D5) package, which has a specified junction-to-ambient thermal resistance (θJA) of 253°C/W under standard JEDEC test conditions. With proper PCB copper pour and thermal vias to the MIC5317-1.2YD5-TR's exposed pad, actual θJA can be reduced by 20–40% in optimized layouts.
Is the MIC5317-1.2YD5-TR suitable for RF transmitter power rails?
No - the MIC5317-1.2YD5-TR is explicitly stated in the datasheet as "not suitable for RF transmitter systems." While it provides excellent PSRR for receiver-side noise rejection, its architecture and characterization do not cover RF PA biasing requirements such as transient current slew rate, phase noise contribution, or high-frequency impedance stability - critical for RF transmitter operation with the MIC5317-1.2YD5-TR.
MIC5317-1.2YD5-TR 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):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 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
MIC5317-1.2YD5-TR FAQ
1.How can I place an order for MIC5317-1.2YD5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5317-1.2YD5-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 MIC5317-1.2YD5-TR reliable?
The price and inventory of MIC5317-1.2YD5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5317-1.2YD5-TR is usually 5 days.
3.What payment methods are accepted for MIC5317-1.2YD5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5317-1.2YD5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5317-1.2YD5-TR?
MIC5317-1.2YD5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5317-1.2YD5-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 MIC5317-1.2YD5-TR?
For technical support, including MIC5317-1.2YD5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5317-1.2YD5-TR requirements.
6.How does Aetrix verify that MIC5317-1.2YD5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5317-1.2YD5-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 MIC5317-1.2YD5-TR meets industry standards.
7.What is the process for return or replacement of MIC5317-1.2YD5-TR?
All MIC5317-1.2YD5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5317-1.2YD5-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 MIC5317-1.2YD5-TR part is unused and in its original packaging.
Return procedure for MIC5317-1.2YD5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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