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Microchip Technology MIC5315-GW3YMT-TR
- Part No.:
- MIC5315-GW3YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC5315-GW3YMT-TR.pdf
- Description:
- IC REG LINEAR 1.1V/1.8V 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,853
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Product details
Overview
MIC5315-GW3YMT-TR from Micrel is a dual low-dropout linear regulator IC delivering two independent 300mA outputs with fixed VOUT1 = 1.8V and voltage-selectable VOUT2 (1.6V or 1.1V), ultra-low dropout of 85mV at full load, 1% output accuracy, and operation down to 1.7V input - designed for power management in portable battery-powered systems such as GPS receivers and digital cameras.
For engineers reviewing the MIC5315-GW3YMT-TR datasheet, MIC5315-GW3YMT-TR pinout, MIC5315-GW3YMT-TR application, or MIC5315-GW3YMT-TR equivalent, key selection criteria include dual independent enable control (EN1/EN2), /VSC2 voltage select functionality, bias-supply architecture (VBIAS), thermal shutdown protection, and compatibility with 1µF ceramic output capacitors.
Technical Context
The MIC5315-GW3YMT-TR integrates two CMOS-based LDOs sharing a common VBIAS rail (2.5–5.5V) while maintaining independent VIN1/VIN2 inputs (1.7–VBIAS). Each regulator features fast transient response and internal current limiting (350–550mA) plus thermal shutdown.
Voltage select is implemented via active-low /VSC2 pin controlling LDO2's output between nominal (1.6V) and reduced (1.1V) levels; VBIAS powers the reference and control circuitry, enabling ultra-low dropout (85mV @ 300mA) and sub-1µA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA per LDO - supports powering core logic and I/O rails simultaneously without derating. |
| Input Voltage Range | 1.7V to VBIAS - enables direct regulation from single-cell Li-ion or Li-poly batteries. |
| Dropout Voltage | 85mV @ 300mA - minimizes power loss and heat generation in low-VIN applications. |
| Output Accuracy | ±1% (typical), ±2% (over temp) - ensures stable voltage for precision analog and digital circuits. |
| VOUT1 / VOUT2 | Fixed 1.8V / selectable 1.6V or 1.1V - provides flexible power sequencing and standby-mode power savings. |
| Ground Current | 7µA (active, light load), <1µA (shutdown) - extends battery life in always-on or sleep-state devices. |
| PSRR | 65dB @ 1kHz - suppresses noise from upstream DC-DC converters feeding VIN1/VIN2. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (leadless, RoHS-compliant, NiPdAu finish, halogen-free mold compound).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | LDO1 input supply | Accepts 1.7V–VBIAS; powers first 300mA output (VOUT1 = 1.8V). |
| VIN2 | LDO2 input supply | Independent 1.7V–VBIAS input for second regulator with voltage select. |
| VBIAS | Bias supply rail | 2.5–5.5V reference source for internal circuitry; enables ultra-low dropout operation. |
| EN1 | LDO1 enable (active-high) | CMOS-compatible logic input; disables LDO1 and reduces ground current to <1µA. |
| EN2 | LDO2 enable (active-high) | Independent control of second LDO; allows dynamic power gating of subsystems. |
| GND | Power ground | Common return path for both LDOs and bias circuitry; requires low-impedance PCB connection. |
| CBYP | Bypass capacitor node | Connects 0.01µF capacitor to ground to reduce output noise and improve PSRR. |
| /VSC2 | Voltage select control (active-low) | Logic high → VOUT2 = 1.6V; logic low → VOUT2 = 1.1V; enables low-power standby mode. |
| VOUT2 | LDO2 regulated output | Delivers 300mA at either 1.6V (active) or 1.1V (standby) depending on /VSC2 state. |
| VOUT1 | LDO1 regulated output | Fixed 1.8V, 300mA output; no voltage select; optimized for core logic or memory I/O. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs (EN1/EN2) | Enables selective power-down of individual rails without affecting other subsystems. |
| Voltage-selectable VOUT2 (/VSC2) | Reduces LDO2 output from 1.6V to 1.1V in standby, cutting dynamic power by ~40% for connected peripherals. |
| Stable with 1µF ceramic output caps | Eliminates need for large, costly tantalum or aluminum electrolytic capacitors; saves board space. |
| Ultra-low 85mV dropout @ 300mA | Permits operation with minimal headroom - e.g., 1.8V input → 1.8V output feasible under light load. |
| Thermal shutdown + current limit | Protects against overtemperature and short-circuit faults without external components. |
| Sub-1µA shutdown current | Extends shelf life and battery runtime in storage or deep-sleep modes (e.g., GPS tracking beacons). |
Applications
| Mobile Phones | GPS Navigation Devices |
|---|---|
Use Scenario: Dual-rail power for application processor core (1.8V) and RF transceiver I/O (1.6V/1.1V). IC Role / Device Role / Timing Role: Primary dual-LDO voltage regulator managing dynamic voltage scaling during transmit/receive cycles. Use Value: Enables 1.1V standby mode for RF section while keeping core logic active at 1.8V - reducing system idle power by >35%. |
Use Scenario: Powering GPS baseband ASIC (1.8V) and GNSS front-end LNA (1.6V), with /VSC2 toggled during satellite acquisition vs. tracking. IC Role / Device Role / Timing Role: Low-noise, fast-transient dual regulator supplying critical timing-sensitive RF and digital blocks. Use Value: 65dB PSRR at 1kHz prevents switching noise from DC-DC converter from degrading GPS signal-to-noise ratio. |
| Portable Media Players | Digital Still Cameras |
Use Scenario: Supplying NAND flash interface (1.8V) and audio codec (1.6V), with /VSC2 lowering codec voltage during playback pause. IC Role / Device Role / Timing Role: Dual-output power manager coordinating voltage states across mixed-signal subsystems. Use Value: Reduces codec bias current by ~50% in 1.1V mode, extending battery life during audio-only playback. |
Use Scenario: Powering image sensor interface (1.8V) and auto-focus motor driver (1.6V), with EN2 disabling motor rail when idle. IC Role / Device Role / Timing Role: Precision dual-LDO ensuring stable voltage during high-current AF actuation pulses. Use Value: 150µs turn-on time ensures motor rail is fully regulated before focus command execution - eliminating startup delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6216D182MR-G | Single 300mA LDO, fixed 1.8V, no voltage select or dual-enable; 250mV dropout @ 300mA. | Lacks VOUT2 flexibility and independent control - suitable only for single-rail use cases. | Select only if system requires only one regulated rail and can tolerate higher dropout. |
| Ricoh RP512K181D-TR-F | Dual 300mA LDOs, fixed 1.8V/1.2V outputs, no voltage select; 120mV dropout @ 300mA; no /VSC2 pin. | Provides fixed dual outputs but cannot dynamically scale VOUT2 - limits power optimization in standby. | Choose when simplified BOM and guaranteed 1.2V rail are prioritized over adaptive voltage control. |
Compared with MIC5315-GW3YMT-TR, XC6216D182MR-G lacks dual regulation and voltage select, while RP512K181D-TR-F offers fixed dual outputs but no dynamic VOUT2 scaling - making MIC5315-GW3YMT-TR uniquely suited for systems requiring programmable low-power standby states.
Availability
MIC5315-GW3YMT-TR is available at Aetrix Electronics and suitable for mobile phones, GPS navigation devices, and portable media players requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5315-GW3YMT-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5315-GW3YMT-TR belongs to Micrel's low-voltage dual-LDO product line, engineered specifically for space-constrained, battery-powered portable electronics demanding high efficiency, fast transient response, and intelligent power-state control.
FAQ
What is the exact output voltage configuration of the MIC5315-GW3YMT-TR?
The MIC5315-GW3YMT-TR delivers a fixed 1.8V output on VOUT1 and a voltage-selectable output on VOUT2: 1.6V when /VSC2 is logic high, and 1.1V when /VSC2 is logic low. This dual-voltage capability is confirmed in the Ordering Information table and Functional Characteristics section of the official Micrel datasheet (M9999-070208-A).
Does the MIC5315-GW3YMT-TR require external capacitors, and what values are specified?
Yes - the MIC5315-GW3YMT-TR requires a 1µF ceramic capacitor on each input (VIN1, VIN2), a 1µF ceramic capacitor on each output (VOUT1, VOUT2), and a 0.01µF capacitor on CBYP. These values are explicitly validated in the Electrical Characteristics table and Application Information section for stability, noise reduction, and PSRR performance.
What is the maximum junction temperature and thermal resistance for the MIC5315-GW3YMT-TR?
The MIC5315-GW3YMT-TR has a maximum junction temperature of +125°C and a junction-to-ambient thermal resistance (θJA) of 80°C/W in the 2mm × 2mm Thin MLF® package. These values are specified in the Absolute Maximum Ratings and Operating Ratings sections and are used to calculate safe ambient operating limits under load.
How does the /VSC2 pin function on the MIC5315-GW3YMT-TR, and what logic levels are required?
The /VSC2 pin is an active-low control input that selects between two VOUT2 levels: logic high (≥1.2V) sets VOUT2 = 1.6V; logic low (≤0.2V) sets VOUT2 = 1.1V. The enable thresholds and leakage current (<1µA) are defined in the Electrical Characteristics table under "Enable Input Voltage" and "Enable Input Current".
Is the MIC5315-GW3YMT-TR compatible with lead-free reflow processes?
Yes - the MIC5315-GW3YMT-TR uses Micrel's Thin MLF® package, which is RoHS-compliant and rated for lead-free soldering with a peak reflow temperature of 260°C (3-second duration), as stated in the Absolute Maximum Ratings section of the datasheet.
MIC5315-GW3YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-UFDFN, 10-TMLF®
- 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):
- 1.1V/1.6V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 300mA, 0.2V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 12 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB ~ 40dB (1kHz ~ 20kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TMLF® (2x2)
MIC5315-GW3YMT-TR FAQ
1.How can I place an order for MIC5315-GW3YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5315-GW3YMT-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 MIC5315-GW3YMT-TR reliable?
The price and inventory of MIC5315-GW3YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5315-GW3YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5315-GW3YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5315-GW3YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5315-GW3YMT-TR?
MIC5315-GW3YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5315-GW3YMT-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 MIC5315-GW3YMT-TR?
For technical support, including MIC5315-GW3YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5315-GW3YMT-TR requirements.
6.How does Aetrix verify that MIC5315-GW3YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5315-GW3YMT-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 MIC5315-GW3YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5315-GW3YMT-TR?
All MIC5315-GW3YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5315-GW3YMT-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 MIC5315-GW3YMT-TR part is unused and in its original packaging.
Return procedure for MIC5315-GW3YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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