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Microchip Technology MIC5315-F5CYMT-TR
- Part No.:
- MIC5315-F5CYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC5315-F5CYMT-TR.pdf
- Description:
- IC REG LINEAR 1V/1.5V 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,303
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Product details
Overview
MIC5315-F5CYMT-TR from Micrel is a dual low-dropout linear regulator IC delivering two independent 300mA outputs with fixed VOUT1 = 1.5V and voltage-selectable VOUT2 = 1.3V (full) or 1.0V (low mode), operating from 1.7V input, featuring 85mV dropout at full load, 1% output accuracy, and zero-off-mode shutdown current <1µA - ideal for powering core and I/O rails in portable media players and GPS devices.
For engineers reviewing the MIC5315-F5CYMT-TR datasheet, MIC5315-F5CYMT-TR pinout, MIC5315-F5CYMT-TR application, or MIC5315-F5CYMT-TR equivalent, key selection considerations include dual independent enable control (EN1/EN2), active-low voltage select (/VSC2) for dynamic power scaling, bias-supply architecture (VBIAS), ultra-low-noise operation (30µVRMS), and stability with 1µF ceramic output capacitors.
Technical Context
The MIC5315-F5CYMT-TR integrates two CMOS-based LDOs sharing a common VBIAS supply (2.5–5.5V) while maintaining independent VIN1/VIN2 inputs (1.7–VBIAS). Each regulator uses a precision bandgap reference and fast-transient-response error amplifier to achieve ±1% initial accuracy and <300µs turn-on time.
Voltage select functionality is implemented exclusively on LDO2 via the /VSC2 pin: logic high enables 1.3V output, logic low switches to 1.0V - enabling system-level standby power reduction without external reconfiguration. Thermal shutdown and foldback current limiting protect both regulators under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA per LDO - supports simultaneous core + I/O rail regulation in space-constrained portable SoC designs. |
| Input Voltage Range | 1.7V to VBIAS - enables direct regulation from single-cell Li-ion (2.7–4.2V) or boosted 1.8V/2.5V supplies. |
| Dropout Voltage | 85mV @ 300mA - minimizes power loss and heat generation when VIN1/VIN2 are only marginally above VOUT. |
| Output Accuracy | ±1.0% (typical), ±2.0% (over temp) - ensures stable voltage delivery to sensitive digital logic and RF circuitry. |
| Ground Current | 7µA (LDO1 active, LDO2 disabled), 46µA (both active) - enables multi-day battery life in always-on monitoring modes. |
| PSRR | 65dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding VIN1/VIN2. |
| Shutdown Current | 0.01–1.0µA - eliminates quiescent drain during deep sleep, critical for battery-backed real-time clocks. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (leadless, RoHS-compliant, NiPdAu finish, halogen-free mold compound).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN1 | LDO1 input supply | Accepts 1.7–VBIAS; powers first 300mA output (VOUT1 = 1.5V) independently of VIN2. |
| 2 VIN2 | LDO2 input supply | Accepts 1.7–VBIAS; powers second 300mA output (VOUT2 = 1.3V/1.0V) with voltage select control. |
| 3 VBIAS | Bias supply input | 2.5–5.5V reference source for internal circuitry; bypass with 1µF ceramic to reduce noise coupling. |
| 4 EN1 | LDO1 enable | Active-high CMOS input; drives VOUT1 on/off independently; must not float - tie to VBIAS or GND via pull-up/down. |
| 5 EN2 | LDO2 enable | Active-high CMOS input; controls VOUT2 independently; enables asymmetric power sequencing (e.g., VOUT1 always on, VOUT2 gated). |
| 6 GND | Power ground | Common return path for both LDOs and bias circuitry; requires low-inductance PCB connection to minimize PSRR degradation. |
| 7 CBYP | Bypass capacitor terminal | Connects to 0.01µF capacitor to ground; filters internal reference noise and improves PSRR by >20dB above 10kHz. |
| 8 /VSC2 | LDO2 voltage select | Active-low digital input; logic high → VOUT2 = 1.3V, logic low → VOUT2 = 1.0V; enables dynamic power scaling without firmware changes. |
| 9 VOUT2 | LDO2 regulated output | Delivers 1.3V or 1.0V (selected by /VSC2) at up to 300mA; designed for low-noise analog or standby I/O domains. |
| 10 VOUT1 | LDO1 regulated output | Fixed 1.5V output at up to 300mA; optimized for digital core logic requiring tight tolerance and fast transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable | EN1 and EN2 allow staggered power-up, selective rail shutdown, and fault-isolation without affecting the other LDO. |
| Voltage-selectable LDO2 | /VSC2 pin reduces VOUT2 from 1.3V to 1.0V - cuts dynamic power by ~23% in standby while retaining regulation integrity. |
| Ultra-low-noise output | 30µVRMS (10Hz–100kHz) with 0.01µF CBYP - meets noise-sensitive requirements for ADC references and RF synthesizers. |
| Zero-off-mode shutdown | Sub-1µA total device current when both EN1 and EN2 are low - preserves battery charge during extended idle periods. |
| Stable with 1µF ceramics | No external ESR requirements; eliminates need for bulky tantalum or polymer capacitors - saves board area and cost. |
Applications
| Mobile Phones | GPS Navigation Devices |
|---|---|
Use Scenario: Dual-rail power for application processor (core) and cellular modem (I/O) in slim form-factor handsets. IC Role / Device Role / Timing Role: MIC5315-F5CYMT-TR provides independent 1.5V core and 1.3V/1.0V I/O regulation with sequenced enable control. Use Value: Enables dynamic voltage scaling of modem I/O during data bursts and deep-sleep states, extending talk time by >12% versus fixed-output LDOs. |
Use Scenario: Power management for GPS baseband IC and RF front-end in automotive-grade navigation units. IC Role / Device Role / Timing Role: MIC5315-F5CYMT-TR delivers low-noise 1.5V to GPS baseband and selectable 1.3V/1.0V to RF synthesizer under wide temperature (-40°C to +125°C). Use Value: Maintains ±1% output accuracy across automotive thermal cycles while suppressing DC-DC ripple via 65dB PSRR - reducing position drift by up to 3m. |
| Portable Media Players | Digital Still Cameras |
Use Scenario: Simultaneous regulation for NAND flash controller (1.5V) and display interface (1.3V) in MP3/video players. IC Role / Device Role / Timing Role: MIC5315-F5CYMT-TR supplies tightly regulated rails with independent enable to manage playback vs. standby power states. Use Value: Zero-off-mode current (<1µA) extends battery life in pause mode; fast 300µs turn-on ensures instant resume from sleep. |
Use Scenario: Powering image sensor analog front-end (1.5V) and ISP digital core (1.3V) during burst capture sequences. IC Role / Device Role / Timing Role: MIC5315-F5CYMT-TR delivers low-noise 1.5V to sensor bias and dynamically scales 1.3V→1.0V on ISP during preview mode. Use Value: Reduces average ISP power by 28% during preview without compromising capture latency - enabling longer video recording sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | Fixed 1.5V/3.3V outputs; no voltage select; higher 120mV dropout; 2.5V min input. | Supports legacy 3.3V I/O but lacks dynamic scaling - unsuitable for low-power standby optimization. | Select only if system requires 3.3V rail and does not implement voltage-select power gating. |
| NCP1117DT50RKG | Single 500mA LDO; fixed 5.0V output; 1.2V dropout; TO-252 package; no enable or voltage select. | Cannot replace dual-rail functionality - requires two separate devices and additional sequencing logic. | Use only for cost-sensitive single-rail applications where size and feature set are secondary. |
Compared with TPS70245PWPR and NCP1117DT50RKG, the MIC5315-F5CYMT-TR uniquely combines dual independent enables, voltage-selectable LDO2, sub-1µA shutdown, and 2mm×2mm footprint - making it the only option supporting true dynamic power-state optimization in space-constrained portable designs.
Availability
MIC5315-F5CYMT-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-F5CYMT-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, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC5315 product line was designed specifically for ultra-low-power, dual-rail portable electronics - emphasizing minimal dropout, precise voltage accuracy, and intelligent power-state control via enable and voltage-select pins.
FAQ
What are the exact output voltages configured in MIC5315-F5CYMT-TR?
The MIC5315-F5CYMT-TR is factory-configured with VOUT1 = 1.5V (fixed) and VOUT2 = 1.3V (full mode) or 1.0V (low mode, selected via /VSC2 pin). This dual-voltage capability is confirmed in the Ordering Information table on page 2 of the Micrel datasheet M9999-070208-A, where "F5C" marking corresponds to 1.5V/1.3V/1.0V options.
Does MIC5315-F5CYMT-TR require external components for stability?
Yes - MIC5315-F5CYMT-TR requires a 1µF ceramic capacitor on each output (VOUT1 and VOUT2), a 1µF capacitor on VBIAS, and a 0.01µF capacitor on CBYP for optimal noise performance. Input capacitors (1µF on VIN1/VIN2) are also mandatory. These values are specified in the Application Information section (pages 9–10) and validated in the Typical Application Circuit (page 11).
How does the /VSC2 pin function in MIC5315-F5CYMT-TR?
In MIC5315-F5CYMT-TR, the /VSC2 pin is an active-low control that selects between two preset VOUT2 levels: logic high sets VOUT2 = 1.3V, logic low sets VOUT2 = 1.0V. This function is electrically verified in the Pin Description (page 3) and Electrical Characteristics table (page 4), where "Select Mode Output Voltage Accuracy" is tested under V/VSC2 = Logic Low condition.
What is the thermal performance of MIC5315-F5CYMT-TR at full load?
At 300mA per LDO with VIN = 1.8V, VOUT1 = 1.5V, and VOUT2 = 1.0V, MIC5315-F5CYMT-TR dissipates 0.33W. With θJA = 80°C/W, the maximum ambient temperature is calculated as 98.6°C - confirmed in the Thermal Considerations section (page 10) using the exact part number's configuration and package data.
Is MIC5315-F5CYMT-TR compatible with lead-free reflow processes?
Yes - MIC5315-F5CYMT-TR uses Micrel's Thin MLF® package, which is explicitly stated as GREEN RoHS-compliant with NiPdAu lead finish and halogen-free mold compound (page 2, Notes section). The Absolute Maximum Ratings specify a 260°C lead temperature for 3 seconds, fully compliant with IPC/JEDEC J-STD-020D reflow profiles.
MIC5315-F5CYMT-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):
- 1V/1.3V, 1.5V
- 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-F5CYMT-TR FAQ
1.How can I place an order for MIC5315-F5CYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5315-F5CYMT-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-F5CYMT-TR reliable?
The price and inventory of MIC5315-F5CYMT-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-F5CYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5315-F5CYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5315-F5CYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5315-F5CYMT-TR?
MIC5315-F5CYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5315-F5CYMT-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-F5CYMT-TR?
For technical support, including MIC5315-F5CYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5315-F5CYMT-TR requirements.
6.How does Aetrix verify that MIC5315-F5CYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5315-F5CYMT-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-F5CYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5315-F5CYMT-TR?
All MIC5315-F5CYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5315-F5CYMT-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-F5CYMT-TR part is unused and in its original packaging.
Return procedure for MIC5315-F5CYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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