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Microchip Technology MIC5325-3.6YMT-TR
- Part No.:
- MIC5325-3.6YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC5325-3.6YMT-TR.pdf
- Description:
- IC REG LINEAR 3.6V 400MA 6TMLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC5325-3.6YMT from Micrel is a fixed-output 3.6V ultra-low-dropout linear regulator delivering up to 400mA output current with 110mV dropout at full load, ±2% voltage accuracy over –40°C to +125°C, and 35µA typical ground current-designed for battery-powered GPS receivers and low-power handheld devices requiring stable low-noise supply rails.
For engineers reviewing the MIC5325-3.6YMT datasheet, MIC5325-3.6YMT pinout, MIC5325-3.6YMT application, or MIC5325-3.6YMT equivalent, key selection criteria include bias-input dual-supply architecture (VBIAS/VIN), 1µF ceramic capacitor stability, enable-controlled zero-off-mode shutdown, and thermal/current protection in a 2mm × 2mm Thin MLF® package.
Technical Context
The MIC5325-3.6YMT employs a dual-rail input architecture: VIN supplies the power path while VBIAS (2.5V–5.5V) powers the control circuitry, enabling ultra-low dropout and minimizing ground current across load conditions. Its µCap architecture stabilizes with only 1µF ceramic output capacitance and integrates a quick-start bypass circuit for fast turn-on even with 10nF BYP capacitor.
Functional protection includes thermal shutdown, foldback current limiting (450–680mA), and CMOS-based active-high EN pin with defined logic thresholds (VIL ≤ 0.2V, VIH ≥ 1.2V). Ripple rejection reaches 65dB at 1kHz with 10nF BYP capacitor, and output noise is 30µVRMS (10Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6V ±2% over –40°C to +125°C - ensures stable rail for 3.3V/3.6V logic and RF front-ends without external feedback. |
| Dropout Voltage | 110mV typical @ 400mA - enables operation from 3.71V input (e.g., single Li-ion cell post-discharge) while maintaining regulation. |
| Ground Current | 35µA typical @ 100µA–400mA load - minimizes quiescent power loss in always-on battery systems. |
| Shutdown Current | 0.01µA typical - reduces system standby drain to negligible levels in portable electronics. |
| Input Voltage Range | VIN: 1.7V to VBIAS; VBIAS: 2.5V to 5.5V - supports flexible bias sourcing (e.g., main rail or auxiliary supply) independent of VIN. |
| Capacitor Requirements | Stable with 1µF ceramic COUT and optional 10nF CBYP - eliminates need for large electrolytics and simplifies layout in space-constrained designs. |
| Thermal Resistance | θJA = 90°C/W (2×2 Thin MLF®) - defines maximum ambient temperature limit under 400mA load (e.g., ~105°C at 125°C junction). |
Pinout & Package
Package: 6-pin 2mm × 2mm Thin MLF® (MT), Pb-free, exposed pad (thermal connection to PCB ground plane required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VBIAS | Bias supply input | Powers internal reference and control circuitry; must be 2.5V–5.5V; decoupling with 1µF ceramic improves transient response. |
| 2 - GND | Analog/digital ground | Common return for VIN, VOUT, VBIAS, and BYP; requires low-inductance connection to PCB ground plane and thermal pad. |
| 3 - IN | Main power input | Supplies LDO pass element; minimum 1.7V; requires 1µF ceramic bypass to GND for stability and noise suppression. |
| 4 - OUT | Regulated output | Delivers 3.6V @ up to 400mA; connects directly to load; output capacitor must be ≥1µF ceramic for loop stability. |
| 5 - BYP | Noise bypass terminal | Connects to 10nF capacitor to GND to reduce reference noise and improve PSRR; enables low-noise operation without slowing turn-on. |
| 6 - EN | Enable control input | Active-high CMOS input; VIH ≥ 1.2V enables regulator; VIL ≤ 0.2V disables into zero-current state; must not float. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply architecture (VIN + VBIAS) | Decouples power path from control circuitry, enabling ultra-low dropout and <100µA total ground current across full load range. |
| µCap stability | Guaranteed stability with only 1µF ceramic output capacitor - reduces BOM count and board area vs. traditional LDOs requiring ≥10µF. |
| Ultra-low-noise regulation | 30µVRMS output noise (10Hz–100kHz) and 65dB PSRR @ 1kHz with BYP capacitor - suitable for RF-sensitive GPS and sensor analog rails. |
| Zero-off-mode shutdown | 0.01µA shutdown current with EN = low - extends battery life in intermittently active portable devices without leakage concerns. |
| Integrated protection | Thermal shutdown and foldback current limiting prevent damage during overload or high-temperature operation without external components. |
Applications
| GPS Receivers | Low-Power Handheld Devices |
|---|---|
|
Use Scenario: Powering GNSS baseband ICs and RF front-ends in compact wearable GPS trackers operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary 3.6V analog supply regulator with low noise and fast transient response to maintain signal integrity during satellite acquisition bursts. Use Value: 30µVRMS noise and 65dB PSRR prevent degradation of C/N₀ ratio; 110mV dropout enables >95% battery utilization down to 3.71V input. |
Use Scenario: Supplying microcontroller core voltage and peripheral I/O in Bluetooth LE remote controls and medical sensors. IC Role / Device Role / Timing Role: Always-on LDO providing regulated 3.6V rail with ultra-low IQ to minimize standby current in sleep-mode intervals. Use Value: 35µA typical ground current and 0.01µA shutdown current extend coin-cell or small Li-ion battery life to multi-year operation. |
| Portable Electronics | Post Regulator |
|
Use Scenario: Final-stage regulation after DC-DC converter in digital cameras and portable audio players where EMI-sensitive analog sections require clean supply. IC Role / Device Role / Timing Role: Low-noise post-LDO filtering switching regulator ripple and improving PSRR for ADCs, DACs, and op-amps. Use Value: 10nF BYP capacitor reduces broadband noise by >20dB; 1µF COUT ensures stability without adding bulk capacitance. |
Use Scenario: Tight-tolerance secondary regulation for FPGA I/O banks or ASIC auxiliary rails fed from higher-voltage intermediate bus. IC Role / Device Role / Timing Role: Precision 3.6V reference-grade LDO compensating for upstream converter tolerance and line/load variation. Use Value: ±2% output accuracy and <2% load regulation ensure compliance with JEDEC I/O voltage specs; dual-supply architecture isolates noise from intermediate bus. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-dropout LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B362MR-G | Single-supply (VIN-only); 3.6V fixed; 200mA max; 60mV dropout @ 100mA; no VBIAS pin. | Lacks dual-rail architecture and zero-off-mode shutdown; lower output current limits use in high-pulse-load scenarios. | Select when board space allows larger output cap and system does not require sub-1µA shutdown or 400mA capability. |
| Ricoh RP114K361D-TR-F | Single-supply; 3.6V fixed; 300mA max; 120mV dropout @ 300mA; 1.8µA IQ; no BYP pin. | Higher ground current than MIC5325-3.6YMT; no bypass capacitor option for noise reduction; lower max current. | Choose for cost-sensitive designs where 300mA suffices and ultra-low noise is not critical for RF/analog sections. |
Compared with XC6219B362MR-G and RP114K361D-TR-F, the MIC5325-3.6YMT uniquely delivers 400mA output with dual-supply architecture, zero-off-mode shutdown, and BYP-enabled low-noise operation-making it optimal for high-performance portable and GPS applications demanding both efficiency and signal integrity.
Availability
MIC5325-3.6YMT is available at Aetrix Electronics and suitable for GPS receivers, low-power handheld devices, and portable electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MIC5325-3.6YMT 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 timing solutions before its acquisition by Microchip Technology in 2015. It pioneered high-efficiency, low-noise LDO architectures for portable electronics.
The MIC5325 family was designed specifically for battery-powered applications needing ultra-low IQ, fast transient response, and dual-supply flexibility-targeting GPS, wearables, and space-constrained IoT endpoints where every microamp and millivolt matters.
FAQ
What is the minimum input voltage required for MIC5325-3.6YMT to regulate at full 400mA load?
The MIC5325-3.6YMT requires VIN ≥ VOUT + dropout voltage. With 110mV typical dropout at 400mA, the minimum VIN is 3.6V + 0.11V = 3.71V. The absolute minimum VIN specification is 1.7V, but regulation at full load is only guaranteed above the dropout threshold. Below that, output voltage drops linearly with VIN.
Does MIC5325-3.6YMT require an external resistor divider for output voltage setting?
No, MIC5325-3.6YMT is a fixed-output device with internally trimmed 3.6V regulation. It contains no feedback pins or external resistor connections. Output voltage is factory-set and unadjustable-ensuring ±2% accuracy without calibration or external components.
Can MIC5325-3.6YMT operate without the BYP capacitor, and what is the impact on performance?
Yes, MIC5325-3.6YMT functions without the BYP capacitor, but PSRR degrades from 65dB to 60dB at 1kHz and output noise increases from 30µVRMS to approximately 59µVRMS (10Hz–1MHz). The BYP pin is optional but recommended for noise-sensitive analog or RF loads like GPS receivers.
What is the thermal pad connection requirement for MIC5325-3.6YMT's 2mm × 2mm Thin MLF® package?
The exposed thermal pad on the MIC5325-3.6YMT must be soldered to a solid PCB ground plane with ≥4 thermal vias (0.3mm diameter) to maximize heat dissipation. Without this, θJA rises significantly above the rated 90°C/W, risking thermal shutdown at >250mA load in still-air conditions.
Is MIC5325-3.6YMT compatible with ceramic capacitors having Y5V dielectric?
No-Y5V dielectrics are not recommended. Their capacitance can drop >60% over temperature, violating the 1µF minimum stability requirement. X7R or X5R ceramics are required; they maintain ≥85% of nominal value across –40°C to +125°C, ensuring consistent loop stability and transient response.
MIC5325-3.6YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 400mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- -
- PSRR:
- 40dB ~ 65dB (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:
- 6-TMLF® (2x2)
MIC5325-3.6YMT-TR FAQ
1.How can I place an order for MIC5325-3.6YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5325-3.6YMT-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 MIC5325-3.6YMT-TR reliable?
The price and inventory of MIC5325-3.6YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5325-3.6YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5325-3.6YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5325-3.6YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5325-3.6YMT-TR?
MIC5325-3.6YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5325-3.6YMT-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 MIC5325-3.6YMT-TR?
For technical support, including MIC5325-3.6YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5325-3.6YMT-TR requirements.
6.How does Aetrix verify that MIC5325-3.6YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5325-3.6YMT-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 MIC5325-3.6YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5325-3.6YMT-TR?
All MIC5325-3.6YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5325-3.6YMT-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 MIC5325-3.6YMT-TR part is unused and in its original packaging.
Return procedure for MIC5325-3.6YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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