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Microchip Technology MIC5316-F4CYMT-TR
- Part No.:
- MIC5316-F4CYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 12-UFDFN Exposed Pad, 12-TMLF®
- Datasheet:
-
MIC5316-F4CYMT-TR.pdf
- Description:
- IC REG LINEAR 1V/1.5V 12TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
MIC5316-F4CYMT-TR from Micrel is a dual low-dropout linear regulator IC delivering two independent 300mA outputs (VOUT1 = 1.5V, VOUT2 = 1.2V/1.0V selectable), ultra-low dropout of 85mV at 300mA, Power-On Reset (POR2) with adjustable delay, and bias-supplied architecture enabling operation down to 1.7V input. It serves as a compact, high-efficiency power management solution for multi-rail portable SoC subsystems requiring precise voltage sequencing and standby power optimization.
For engineers reviewing the MIC5316-F4CYMT-TR datasheet, MIC5316-F4CYMT-TR pinout, MIC5316-F4CYMT-TR application, or MIC5316-F4CYMT-TR equivalent, this page provides verified technical context, exact pin functions, real-world use cases in battery-powered devices, and validated alternative options for dual-LDO system design.
Technical Context
The MIC5316-F4CYMT-TR integrates two independent CMOS-based LDO regulators sharing a common VBIAS rail (2.5–5.5V) while accepting separate VIN1/VIN2 inputs (1.7–VBIAS). Each LDO features internal current limiting and thermal shutdown, with LDO2 incorporating /VSC2-controlled voltage select (1.2V ↔ 1.0V) and POR2 open-drain flag output.
LDO1 and LDO2 operate with distinct enable controls (EN1/EN2, active-high), bypass capacitor support (CBYP) for noise reduction, and CSET2-programmable POR2 delay (1 sec/µF). The device achieves fast transient response and stability with only 1µF ceramic output capacitors per rail, enabled by its bias-supplied reference and control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA per LDO - supports core logic and I/O rails of mid-tier mobile processors without external boost. |
| Input Voltage Range | 1.7V to VBIAS - enables direct regulation from single-cell Li-ion or Li-poly batteries (2.7–4.2V) with minimal headroom loss. |
| Dropout Voltage | 85mV @ 300mA - minimizes power dissipation and thermal rise in space-constrained portable PCBs. |
| VOUT1 / VOUT2 | Fixed 1.5V / 1.2V–1.0V (selectable) - matches typical ARM Cortex-A/M cores and DDR I/O voltage requirements. |
| POR2 Threshold | 88% VOUT2 (flag ON), 98% VOUT2 (flag OFF) - ensures reliable reset assertion during brown-out conditions on LDO2 rail. |
| Ground Current | 7µA (LDO1 active, LDO2 disabled) - enables ultra-low quiescent power in partial-sleep states. |
| PSRR | 65dB @ 1kHz - suppresses switching noise from upstream DC-DC converters feeding VIN1/VIN2. |
Pinout & Package
Package: 12-pin 2.5mm × 2.5mm Thin MLF® (RoHS-compliant, NiPdAu lead finish, halogen-free mold compound).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | Input supply for LDO1 | Accepts 1.7V–VBIAS; powers core rail independently of LDO2's input path. |
| VIN2 | Input supply for LDO2 | Enables separate sourcing (e.g., from different battery taps or DC-DC outputs) for flexible power domain partitioning. |
| VBIAS | Bias supply for internal reference/control | 2.5–5.5V rail powers bandgap, POR, and enable logic-decoupled from load current, improving PSRR and stability. |
| EN1 / EN2 | Active-high enable for LDO1/LDO2 | CMOS-compatible inputs; disable respective LDO into ~0.01µA shutdown state-no external pull-down required. |
| /VSC2 | Voltage select control for LDO2 | Logic-low selects 1.0V mode (reducing dynamic power); logic-high retains 1.2V-critical for adaptive voltage scaling. |
| CSET2 | POR2 delay timing input | Connect external capacitor to GND; 1µF = ~1s delay-enables programmable reset hold time for sequenced boot. |
| POR2 | Open-drain Power-On Reset flag | Asserts low when VOUT2 drops below 88% nominal; drives external microcontroller reset or PMIC enable signal. |
| CBYP | Bypass capacitor connection | 0.01µF improves reference noise and PSRR; larger values further reduce noise but slightly increase turn-on time. |
| VOUT1 / VOUT2 | Regulated outputs | 1.5V (fixed) and 1.2V/1.0V (selectable) outputs stable with 1µF X5R/X7R ceramic capacitors-no ESR constraints. |
| GND | Power ground | Single ground plane required; thermal pad (exposed bottom) must be soldered to PCB ground for θJA = 70°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | EN1/EN2 allow asymmetric power-up/down sequencing-e.g., keep LDO1 active for memory retention while disabling LDO2 during sleep. |
| Voltage-select function on LDO2 | /VSC2 toggles VOUT2 between 1.2V (active mode) and 1.0V (standby), reducing dynamic power by ~30% at same frequency. |
| Adjustable POR2 delay | CSET2 sets reset hold time from 0s (pin open) to >10s (10µF)-eliminates need for external RC timer in boot-critical systems. |
| Stability with 1µF ceramic output caps | Eliminates bulk tantalum or aluminum electrolytic capacitors-reduces board area, cost, and failure risk in portable designs. |
| Zero-off-mode current | 0.01µA shutdown current per disabled LDO-extends shelf life and battery storage time in consumer electronics. |
Applications
| Mobile Phone Baseband | GPS Navigation Module |
|---|---|
Use Scenario: Dual-rail power for application processor (1.5V core) and GPS RF front-end (1.2V active / 1.0V standby). IC Role / Device Role / Timing Role: MIC5316-F4CYMT-TR delivers tightly regulated, low-noise supplies with POR2 ensuring clean GPS lock before firmware initialization. Use Value: 85mV dropout preserves battery runtime; /VSC2 reduces standby current by 22% versus fixed 1.2V LDO. |
Use Scenario: Compact GNSS receiver requiring simultaneous 1.5V digital core and 1.2V analog LNA supply with cold-start reset coordination. IC Role / Device Role / Timing Role: MIC5316-F4CYMT-TR provides POR2-synchronized reset to MCU upon LDO2 stabilization-prevents false satellite acquisition attempts. Use Value: CBYP pin enables 30µVRMS output noise-meets stringent phase-noise specs for 1.575GHz GPS L1 band reception. |
| Portable Media Player SoC | Digital Still Camera Image Sensor |
Use Scenario: Powering ARM9-based media processor with dynamic voltage scaling: 1.5V for video decode, 1.2V for audio playback, 1.0V for idle. IC Role / Device Role / Timing Role: MIC5316-F4CYMT-TR uses /VSC2 and EN2 to switch LDO2 voltage and enable state in concert with CPU DVFS commands. Use Value: 1% output accuracy maintains timing margins across voltage transitions; fast transient response prevents frame drop during bitrate spikes. |
Use Scenario: Dual-rail supply for CMOS image sensor: 1.5V digital interface and 1.2V analog pixel array-with POR2 triggering sensor initialization after power ramp. IC Role / Device Role / Timing Role: MIC5316-F4CYMT-TR delivers low-noise 1.5V VDDIO and 1.2V AVDD with POR2 asserting reset until AVDD reaches 98% of target. Use Value: 65dB PSRR at 1kHz rejects noise from display backlight drivers-prevents visible banding in captured images. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO with POR and voltage select applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | Fixed 1.5V/3.3V outputs; no voltage select; POR delay not adjustable; 16-pin TSSOP package. | Suitable for non-scaling dual-rail systems where higher VOUT2 is acceptable; lacks standby power optimization. | Choose when fixed 3.3V I/O rail is needed and PCB layout accommodates larger TSSOP footprint. |
| MAX8526ETE+ | 1.2V/1.2V fixed dual outputs; integrated watchdog timer; 10-pin µMAX package; no POR delay adjustment. | Targets always-on monitoring applications; missing /VSC2 functionality eliminates adaptive voltage scaling capability. | Prefer when system-level watchdog supervision is required and voltage select is unnecessary. |
Compared with TPS70245PWPR and MAX8526ETE+, the MIC5316-F4CYMT-TR uniquely combines 1.2V/1.0V voltage select, CSET2-programmable POR delay, and 2.5mm × 2.5mm Thin MLF packaging-enabling smaller form factors and finer-grained power management in battery-constrained designs.
Availability
MIC5316-F4CYMT-TR is available at Aetrix Electronics and suitable for mobile phone baseband, GPS navigation modules, portable media players, digital still cameras, and PDA power management requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for MIC5316-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5316 product line was designed specifically for ultra-compact, high-efficiency dual-rail power delivery in battery-operated portable electronics-emphasizing low dropout, low quiescent current, and integrated power sequencing features.
FAQ
What are the exact output voltages configured for MIC5316-F4CYMT-TR?
The MIC5316-F4CYMT-TR is factory-configured with VOUT1 = 1.5V (fixed) and VOUT2 = 1.2V nominal, with voltage select (/VSC2) enabling a secondary 1.0V output level. This dual-voltage capability on LDO2 supports dynamic power scaling in portable SoCs without requiring external switching circuitry.
How does the CSET2 pin affect POR2 timing in MIC5316-F4CYMT-TR?
In the MIC5316-F4CYMT-TR, the CSET2 pin sets POR2 delay by connecting an external capacitor to GND: 1µF yields ~1 second of reset hold time. Leaving CSET2 open results in zero-delay assertion. This programmability allows precise synchronization with downstream logic boot sequences without adding discrete timing components.
Can MIC5316-F4CYMT-TR operate with only one LDO enabled?
Yes-the MIC5316-F4CYMT-TR supports independent control via EN1 and EN2. Disabling LDO2 (EN2 = low) reduces total ground current to ~7µA, while LDO1 remains fully functional. This asymmetrical operation enables partial-system wake-up and extends battery life in always-on sensor nodes.
What capacitor types are recommended for MIC5316-F4CYMT-TR output stability?
The MIC5316-F4CYMT-TR requires ≥1µF ceramic output capacitors per rail, with X5R or X7R dielectrics strongly recommended for stable capacitance over temperature. Y5V and Z5U dielectrics are discouraged due to >50% capacitance loss across –40°C to +85°C, risking instability and poor transient response.
Is MIC5316-F4CYMT-TR compatible with modern RoHS and REACH requirements?
Yes-the MIC5316-F4CYMT-TR uses Micrel's Thin MLF® package, which is RoHS-compliant (lead-free NiPdAu finish) and halogen-free per IEC 61249-2-21. Its manufacturing process meets current REACH SVHC thresholds, and full compliance documentation is available through Microchip Technology's product change notifications.
MIC5316-F4CYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 12-UFDFN Exposed Pad, 12-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, 1.5V
- Voltage - Output (Max):
- 1.2V
- 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, Power On Reset
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TMLF® (2.5x2.5)
MIC5316-F4CYMT-TR FAQ
1.How can I place an order for MIC5316-F4CYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5316-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 MIC5316-F4CYMT-TR reliable?
The price and inventory of MIC5316-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 MIC5316-F4CYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5316-F4CYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5316-F4CYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5316-F4CYMT-TR?
MIC5316-F4CYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5316-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 MIC5316-F4CYMT-TR?
For technical support, including MIC5316-F4CYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5316-F4CYMT-TR requirements.
6.How does Aetrix verify that MIC5316-F4CYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5316-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 MIC5316-F4CYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5316-F4CYMT-TR?
All MIC5316-F4CYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5316-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 MIC5316-F4CYMT-TR part is unused and in its original packaging.
Return procedure for MIC5316-F4CYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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