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Microchip Technology MIC5315-F4CYMT-TR
- Part No.:
- MIC5315-F4CYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC5315-F4CYMT-TR.pdf
- Description:
- IC REG LINEAR 1V/1.5V 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
MIC5315-F4CYMT-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 = 1.2V/1.0V, operating from 1.7V input down to ultra-low 85mV dropout at full load, and optimized for battery-powered portable electronics requiring standby power savings.
For engineers reviewing the MIC5315-F4CYMT-TR datasheet, MIC5315-F4CYMT-TR pinout, MIC5315-F4CYMT-TR application, or MIC5315-F4CYMT-TR equivalent, key selection criteria include dual-output voltage select capability, 1% output accuracy over –40°C to +125°C, zero-off-mode shutdown current <1µA, compatibility with 1µF ceramic output capacitors, and thermal/current protection in a 2mm × 2mm Thin MLF® package.
Technical Context
The MIC5315-F4CYMT-TR integrates two independent LDOs sharing a common bias rail (VBIAS) but with separate input supplies (VIN1/VIN2), enabling flexible power domain partitioning. Each regulator features CMOS-based control circuitry with quick-start bypass architecture and active-high enable inputs.
Voltage select is implemented exclusively on LDO2 via the /VSC2 pin: logic high enables nominal VOUT2 = 1.2V; logic low reduces output to 1.0V. The device uses internal reference bypassing through CBYP to achieve 30µVRMS noise and >65dB PSRR at 1kHz, with stability guaranteed using ≥1µF X5R/X7R ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA per LDO - supports dual-core SoC I/O and core rails simultaneously without derating. |
| Input Voltage Range | 1.7V to 5.5V on VIN1/VIN2 - enables direct regulation from single-cell Li-ion or boosted intermediate rails. |
| Dropout Voltage | 85mV @ 300mA - minimizes power loss and heat generation when regulating 1.5V/1.2V from 1.8V supply. |
| Output Accuracy | ±1% at TJ = 25°C; ±2% over –40°C to +125°C - ensures reliable operation of precision analog and digital circuits. |
| Ground Current | 7µA (LDO1 active, LDO2 disabled); 30–46µA (both active) - maintains high light-load efficiency in always-on subsystems. |
| Shutdown Current | 0.01–1.0µA - enables true zero-power state during deep sleep, critical for multi-day battery life. |
| Noise & PSRR | 30µVRMS (10Hz–100kHz); 65dB @ 1kHz - meets noise-sensitive RF and ADC reference requirements. |
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–5.5V; powers first 1.5V output independently of VIN2 path. |
| VIN2 | LDO2 Input Supply | Independent 1.7V–5.5V input for second regulator; enables rail isolation. |
| VBIAS | Bias Reference Supply | 2.5V–5.5V supply for internal control circuitry; decoupling with 1µF improves transient response. |
| EN1 | LDO1 Enable | Active-high CMOS input; must be pulled high or low-no floating allowed. |
| EN2 | LDO2 Enable | Independent active-high enable for second LDO; supports asymmetric power sequencing. |
| GND | Power Ground | Common return for both LDOs and bias circuitry; requires low-impedance PCB plane. |
| CBYP | Bypass Capacitor Node | Connects 0.01µF capacitor to ground to reduce reference noise and improve PSRR. |
| /VSC2 | Voltage Select Control | Active-low input: high = VOUT2 = 1.2V; low = VOUT2 = 1.0V for standby power reduction. |
| VOUT2 | LDO2 Output | Delivers selected 1.2V or 1.0V output; stable with ≥1µF ceramic capacitor. |
| VOUT1 | LDO1 Output | Fixed 1.5V output; no select function; same stability and capacitor requirements as VOUT2. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 300mA LDOs | Enables simultaneous regulation of two distinct voltage domains (e.g., I/O + core) with separate enable and input controls. |
| Voltage select on LDO2 | Reduces VOUT2 from 1.2V to 1.0V under system standby, cutting dynamic power by ~33% for connected peripherals. |
| Ultra-low 85mV dropout @ 300mA | Allows operation from 1.8V input to 1.5V/1.2V outputs with minimal thermal rise in space-constrained mobile PCBs. |
| Stable with 1µF ceramic output caps | Eliminates need for large tantalum or electrolytic capacitors-reduces BOM cost and board area by >50%. |
| Zero-off-mode shutdown | Draws ≤1µA total when both EN1 and EN2 are low-preserves battery charge during extended idle periods. |
| Integrated protection | Thermal shutdown and foldback current limiting prevent damage during short-circuit or overload conditions. |
Applications
| Mobile Phone Power Management | GPS Receiver Core Supply |
|---|---|
|
Use Scenario: Dual-rail power for baseband processor (1.5V I/O) and RF transceiver (1.2V active / 1.0V standby). IC Role / Device Role / Timing Role: Primary dual-LDO regulator providing sequenced, voltage-selectable outputs with fast transient response. Use Value: Enables dynamic voltage scaling between active and GPS tracking modes while maintaining <1% output accuracy across temperature. |
Use Scenario: Low-noise core supply for GPS baseband IC requiring clean 1.5V and 1.2V rails with rapid wake-up from sleep. IC Role / Device Role / Timing Role: Precision LDO delivering regulated power with 30µVRMS noise and 150µs turn-on time. Use Value: Reduces GPS acquisition time and position error by minimizing supply-induced jitter in clock recovery circuits. |
| Portable Media Player Audio Codec | Digital Still Camera Image Sensor Bias |
|
Use Scenario: Powering audio codec analog section (1.5V) and digital interface (1.2V) with independent enable control. IC Role / Device Role / Timing Role: Dual-output LDO supporting asynchronous power gating of audio subsystems. Use Value: Achieves >90dB PSRR at audio frequencies, eliminating audible switching noise in headphone output. |
Use Scenario: Providing stable 1.5V and 1.2V bias for CMOS image sensor and ISP, with 1.0V mode during preview. IC Role / Device Role / Timing Role: Low-dropout regulator with voltage select for sensor power management during frame capture cycles. Use Value: Cuts sensor dark current and read noise by 22% in 1.0V standby mode versus fixed 1.2V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | Fixed 1.5V/3.3V dual outputs; no voltage select; higher 160mV dropout at 300mA; 20-pin TSSOP package. | Designed for mixed-signal systems needing higher-voltage I/O rail; lacks standby voltage scaling. | Select when 3.3V interface rail is required and board space permits larger TSSOP footprint. |
| NCP1117DT50RKG | Single 500mA LDO; fixed 5.0V output; 1.2V dropout; SOT-223 package; no voltage select or dual output. | Intended for post-regulation of DC-DC converter outputs; not suitable for dual-rail portable designs. | Use only as single-rail replacement where dual output and voltage select are unnecessary. |
Compared with TPS70245PWPR and NCP1117DT50RKG, the MIC5315-F4CYMT-TR uniquely delivers matched low-voltage dual outputs with programmable standby scaling in a 4mm² footprint-enabling compact, battery-efficient designs where dynamic power management is mandatory.
Availability
MIC5315-F4CYMT-TR is available at Aetrix Electronics and suitable for mobile phones, GPS navigation devices, portable media players, and digital cameras requiring stable component supply with tight output accuracy and low quiescent current.
Supply support for MIC5315-F4CYMT-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 MIC5315-F4CYMT-TR belongs to Micrel's low-voltage dual-LDO family, engineered specifically for space-constrained, battery-operated portable electronics demanding high efficiency, fast transient response, and intelligent power-state control.
FAQ
What output voltages does the MIC5315-F4CYMT-TR provide?
The MIC5315-F4CYMT-TR provides a fixed 1.5V output on VOUT1 and a voltage-selectable 1.2V/1.0V output on VOUT2. The /VSC2 pin determines the VOUT2 level: logic high selects 1.2V, logic low selects 1.0V. This dual-voltage capability is factory-trimmed and specified over –40°C to +125°C with ±2% accuracy.
How does the MIC5315-F4CYMT-TR achieve ultra-low dropout performance?
The MIC5315-F4CYMT-TR achieves 85mV dropout at 300mA by using a CMOS pass transistor architecture combined with a dedicated low-noise bias supply (VBIAS). Unlike conventional LDOs, it separates power delivery (VIN1/VIN2) from control circuitry (VBIAS), allowing the pass element to operate near saturation while maintaining regulation stability.
Can the MIC5315-F4CYMT-TR operate with ceramic capacitors only?
Yes, the MIC5315-F4CYMT-TR is fully stable with 1µF X5R or X7R ceramic output capacitors and requires no ESR tuning. It also supports 0.01µF ceramic bypass capacitors on CBYP. Y5V and Z5U dielectrics are explicitly discouraged due to excessive capacitance loss over temperature.
What is the shutdown current of the MIC5315-F4CYMT-TR?
The MIC5315-F4CYMT-TR draws 0.01µA to 1.0µA in shutdown when both EN1 and EN2 are held ≤0.2V. This "zero-off-mode" current enables multi-week battery retention in always-connected portable devices without external load switches.
Is thermal protection integrated into the MIC5315-F4CYMT-TR?
Yes, the MIC5315-F4CYMT-TR includes internal thermal shutdown that activates at junction temperatures exceeding +125°C. It also features foldback current limiting-triggering at 350–550mA-to protect against sustained short-circuit conditions without latch-up.
MIC5315-F4CYMT-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/1.2V, 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-F4CYMT-TR FAQ
1.How can I place an order for MIC5315-F4CYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5315-F4CYMT-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-F4CYMT-TR reliable?
The price and inventory of MIC5315-F4CYMT-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-F4CYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5315-F4CYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5315-F4CYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5315-F4CYMT-TR?
MIC5315-F4CYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5315-F4CYMT-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-F4CYMT-TR?
For technical support, including MIC5315-F4CYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5315-F4CYMT-TR requirements.
6.How does Aetrix verify that MIC5315-F4CYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5315-F4CYMT-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-F4CYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5315-F4CYMT-TR?
All MIC5315-F4CYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5315-F4CYMT-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-F4CYMT-TR part is unused and in its original packaging.
Return procedure for MIC5315-F4CYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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