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Microchip Technology MIC37110-1.8YMT-TR
- Part No.:
- MIC37110-1.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-VDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC37110-1.8YMT-TR.pdf
- Description:
- IC REG LINEAR 1.8V 1A 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,239
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Product details
Overview
MIC37110-1.8YMT-TR from Micrel is a fixed-output 1.8V, 1A low-dropout linear regulator in a 2mm × 2mm Thin MLF-6L package, featuring 230mV typical dropout at full load, ±2% output voltage accuracy, and high PSRR (>60dB up to 1kHz). It delivers stable, low-noise power for core logic rails in portable multimedia devices and handheld systems.
For engineers reviewing the MIC37110-1.8YMT-TR datasheet, MIC37110-1.8YMT-TR pinout, MIC37110-1.8YMT-TR application, or MIC37110-1.8YMT-TR equivalent, key selection criteria include input voltage range (2.375V–5.5V), thermal shutdown protection, enable control interface, ground current behavior under load, and compatibility with 2.2µF ceramic output capacitors.
Technical Context
This LDO employs a CMOS-based pass element and internal bandgap reference to achieve tight initial accuracy and low noise. Its EN pin provides active-high logic control with TTL/CMOS-compatible thresholds (1.2V high, 0.65V low) and 100mV hysteresis, enabling clean power sequencing in multi-rail systems.
The device operates across −40°C to +125°C junction temperature and integrates thermal shutdown (160°C trip, 15°C hysteresis) and foldback current limiting (1.2A min). It requires no minimum load for fixed-output variants and remains stable with only 2.2µF ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% - ensures precise core voltage for 1.8V I/O or logic domains without external feedback. |
| Max Output Current | 1A guaranteed - supports moderate-power digital ICs such as baseband processors or display drivers. |
| Dropout Voltage | 230mV typ. at 1A - enables operation from 2.03V input, critical for single-cell Li-ion or Li-poly battery systems. |
| PSRR | >60dB up to 1kHz - suppresses switching noise from upstream DC/DC converters in mixed-signal power trees. |
| Ground Current | 250–500µA at 10mA–1A load - minimizes quiescent power loss in always-on subsystems. |
| Input Range | 2.375V to 5.5V - compatible with 2.5V, 3.3V, and 5V system rails while supporting battery-backed operation. |
| Enable Threshold | Logic-high ≥1.2V, logic-low ≤0.65V - allows direct interfacing with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
Package: 2mm × 2mm Thin MLF-6L (exposed pad, RoHS-compliant, "high-melting solder" exemption). Thermal resistance θJA = 100°C/W with standard PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high CMOS control: tie high to VIN for always-on operation; pull low to reduce ground current to ≤5µA. |
| 2 (IN) | Input supply | Primary power input; accepts 2.375V–5.5V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin. |
| 3 (OUT) | Regulated output | Delivers 1.8V ±2% at up to 1A; stable with ≥2.2µF X7R/X5R ceramic output capacitor. |
| 4 (GND) | Power ground | Common return path for input/output currents; must be connected to low-impedance PCB ground plane. |
| 5 (NC) | No connect | Not internally bonded; leave unconnected per datasheet - no routing or stitching required. |
| 6 (GND) | Power ground | Second ground terminal; improves thermal conduction and reduces ground loop impedance when tied to same plane as Pin 4. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | Ultra-low output noise spectral density (<10µV/√Hz) enables clean power for ADCs, RF front-ends, and PLLs. |
| Fast transient response | Stable with 10µF ceramic output cap; recovers from 100mA–1A load steps within microseconds without external compensation. |
| Thermal robustness | Integrated thermal shutdown (160°C) with 15°C hysteresis prevents latch-up and enables safe recovery after overload. |
| Small-footprint packaging | 2mm × 2mm Thin MLF-6L saves >70% board area vs. SOIC-8 while maintaining 1A capability and thermal performance. |
| UVLO protection | Input undervoltage lockout at 2.2V (100mV hysteresis) prevents erratic startup and brownout-induced logic faults. |
Applications
| Mobile Handheld Power Rail | Set-Top Box Core Logic Supply |
|---|---|
Use Scenario: Powers ARM Cortex-A series application processors and LPDDR2 memory interfaces in smartphones and tablets. IC Role / Device Role / Timing Role: Primary 1.8V core LDO delivering regulated voltage to processor I/O banks and memory VDDQ rails. Use Value: Low dropout enables sustained operation down to 2.03V input, extending runtime on single-cell Li-ion batteries. | Use Scenario: Supplies 1.8V to HDMI transmitter ICs and video decoder SoCs in consumer set-top boxes. IC Role / Device Role / Timing Role: Post-regulator cleaning stage following a 3.3V buck converter, reducing switching ripple before sensitive video circuitry. Use Value: >60dB PSRR at 1kHz attenuates DC/DC switching noise, preventing visible artifacts in HD video output. |
| Gaming Console Audio Subsystem | GPS Receiver Baseband Power |
Use Scenario: Provides ultra-low-noise 1.8V bias to audio DACs and headphone amplifiers in portable gaming devices. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupling digital noise from high-fidelity audio signal paths. Use Value: Output noise <10µV/√Hz eliminates audible hiss and preserves SNR in 24-bit audio playback. | Use Scenario: Powers GPS baseband processors and RF synthesizers requiring stable 1.8V under dynamic satellite acquisition loads. IC Role / Device Role / Timing Role: Dedicated LDO for GNSS chipsets where voltage stability directly impacts time-to-first-fix (TTFF) and position accuracy. Use Value: ±2% initial accuracy and low load regulation (±1.0%) maintain clock domain integrity and minimize timing jitter in correlator circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC37120-1.8YMT | Includes output auto-discharge circuit (30Ω discharge path); otherwise identical electrical specs and pinout. | Required where fast output voltage decay during shutdown is needed to meet system-level power sequencing requirements. | Select MIC37120-1.8YMT if rapid VOUT discharge is mandatory; otherwise MIC37110-1.8YMT offers same regulation performance with lower BOM cost. |
| Torex XC6219B182MR-G | Same 1.8V fixed output, 1A rating, and 2mm × 2mm USP-6B package; dropout 250mV typ. at 1A; PSRR 55dB @ 1kHz. | Suitable for space-constrained consumer electronics but lacks enable pin - always-on operation only. | Choose XC6219B182MR-G only if enable functionality is unnecessary and footprint compatibility is confirmed; verify thermal performance with actual PCB layout. |
Compared with MIC37120-1.8YMT, MIC37110-1.8YMT omits auto-discharge to reduce complexity and cost in non-sequencing applications; versus XC6219B182MR-G, it adds EN control and higher PSRR but requires one more PCB trace for enable routing.
Availability
MIC37110-1.8YMT-TR is available at Aetrix Electronics and suitable for mobile phones, set-top boxes, and GPS receivers requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.
Supply support for MIC37110-1.8YMT-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 analog and power management semiconductor company headquartered in San Jose, CA, acquired by Microchip Technology in 2015.
The MIC371xx family was designed specifically for high-performance, low-noise power delivery in battery-powered consumer electronics - emphasizing small footprint, low dropout, and robust transient response in compact portable systems.
FAQ
What is the minimum input voltage required for MIC37110-1.8YMT-TR to regulate 1.8V at 1A?
The MIC37110-1.8YMT-TR requires a minimum input voltage of 2.03V (1.8V + 230mV dropout) to maintain regulation at 1A load. However, the absolute minimum operating input is specified as 2.375V due to internal UVLO threshold (2.2V with 100mV hysteresis), so reliable operation begins at 2.375V. Below this, the device disables regardless of load.
Does MIC37110-1.8YMT-TR require an external resistor network for output voltage setting?
No. The MIC37110-1.8YMT-TR is a fixed-output variant with factory-trimmed 1.8V regulation; it does not use the ADJ pin and has no external feedback components. The ADJ pin is absent in this part - only adjustable versions (e.g., MIC37112) require resistor dividers. The MIC37110-1.8YMT-TR connects directly to load without configuration.
Can MIC37110-1.8YMT-TR be used without an enable signal?
Yes. The MIC37110-1.8YMT-TR's EN pin is CMOS-compatible and may be permanently tied to VIN to enable continuous operation. When left unconnected, internal pull-up ensures default enabled state - no external pull-up resistor is required. This simplifies designs where dynamic enable control is unnecessary.
What type of output capacitor is recommended for MIC37110-1.8YMT-TR?
The MIC37110-1.8YMT-TR is optimized for stability with ≥2.2µF X7R or X5R ceramic capacitors. Ultra-low ESR types are preferred; Y5V/Z5U dielectrics are discouraged due to >50% capacitance loss over temperature. For improved high-frequency noise suppression, a 10µF X7R ceramic is recommended - placed as close as possible to the OUT and GND pins.
Is MIC37110-1.8YMT-TR pin-compatible with other packages in the MIC371xx family?
No. The MIC37110-1.8YMT-TR uses the 6-pin Thin MLF-6L package with specific pinout (EN/IN/OUT/GND/NC/GND). It is not pin-compatible with SOIC-8 or SOT-223 variants - those have different pin counts, assignments, and thermal pad configurations. Board redesign is required when changing packages, even within the same MIC371xx family.
MIC37110-1.8YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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)
MIC37110-1.8YMT-TR FAQ
1.How can I place an order for MIC37110-1.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC37110-1.8YMT-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 MIC37110-1.8YMT-TR reliable?
The price and inventory of MIC37110-1.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC37110-1.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC37110-1.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC37110-1.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC37110-1.8YMT-TR?
MIC37110-1.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC37110-1.8YMT-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 MIC37110-1.8YMT-TR?
For technical support, including MIC37110-1.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC37110-1.8YMT-TR requirements.
6.How does Aetrix verify that MIC37110-1.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC37110-1.8YMT-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 MIC37110-1.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC37110-1.8YMT-TR?
All MIC37110-1.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC37110-1.8YMT-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 MIC37110-1.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC37110-1.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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