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Microchip Technology MIC2211-LGYML-TR
- Part No.:
- MIC2211-LGYML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2211-LGYML-TR.pdf
- Description:
- IC REG LINEAR 2.7V/1.8V 10MLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC2211-LGYML-TR from Micrel is a dual-output µCap low dropout regulator IC with fixed 2.7V/1.8V outputs, delivering 150mA on VOUT1 and 300mA on VOUT2 in a 10-pin 3mm × 3mm MLF™ package. It features 1% initial output accuracy, 80mV dropout at 100mA (VOUT1), ultra-low 48µA total quiescent current, and independent TTL-compatible enable pins-optimized for space-constrained, battery-powered baseband processor power rails in cellular handsets.
For engineers reviewing the MIC2211-LGYML-TR datasheet, MIC2211-LGYML-TR pinout, MIC2211-LGYML-TR application, or MIC2211-LGYML-TR equivalent, key selection criteria include dual-rail sequencing capability, ceramic-capacitor stability (1µF per output), thermal shutdown protection, and zero-off-mode operation enabled by separate EN1/EN2 control.
Technical Context
The MIC2211-LGYML-TR integrates two independent LDO regulators sharing a common VIN input but featuring separate enable inputs (EN1, EN2) and output terminals (VOUT1, VOUT2), enabling asynchronous power-up/down of core and I/O voltage domains. Each regulator uses a µCap architecture requiring only 1µF ceramic output capacitors for stability, eliminating large tantalum or electrolytic components.
Its internal reference is bypassed via CBYP pin with a 0.01µF capacitor to reduce noise and improve PSRR (60dB at 1kHz); ground current remains constant at 48µA across load conditions when both outputs are disabled, rising only to 60µA under full 150mA/300mA load-confirming true low-quiescent design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltages | Fixed 2.7V (VOUT1) and 1.8V (VOUT2)-match baseband processor core/I/O rail requirements without external feedback resistors. |
| Max output current | 150mA on VOUT1, 300mA on VOUT2-supports typical baseband SoC core and interface loads simultaneously. |
| Dropout voltage | 80mV @ 100mA (VOUT1); 120–190mV typical @ 150mA (VOUT1); 240–340mV typical @ 300mA (VOUT2)-enables operation down to 2.25V input, critical for single-cell Li-ion systems. |
| Quiescent current | 48µA total (24µA per LDO) with both outputs disabled-extends battery life in standby mode without sacrificing fast wake-up. |
| Output accuracy | +1.0% initial, +2.0% over –40°C to +125°C-ensures reliable logic-level compliance across automotive and industrial temperature ranges. |
| PSRR | 60dB at 1kHz, 40dB at 20kHz (with 0.01µF CBYP)-suppresses switching noise from adjacent DC/DC converters in dense RF layouts. |
| Package | 10-pin 3mm × 3mm MLF™ with exposed pad-provides low thermal resistance (θJA = 60°C/W) and compact footprint for handheld PCBs. |
Pinout & Package
The MIC2211-LGYML-TR is housed in a 10-pin 3mm × 3mm MLF™ (MicroLeadFrame) package with an exposed thermal pad connected internally to GND. Pin 6 and EP are both ground terminals and must be soldered to a common PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Common input supply | Shared input for both LDOs; must be bypassed with ≥1µF ceramic capacitor near the pin to ensure stability and transient response. |
| EN1 (Pin 2) | Enable for Regulator 1 | Active-high CMOS input; drives VOUT1 on/off independently; requires ≥1.8V for guaranteed turn-on, ≤0.6V for shutdown. |
| EN2 (Pin 3) | Enable for Regulator 2 | Active-high CMOS input; controls VOUT2 separately; enables flexible power sequencing between core (2.7V) and I/O (1.8V) rails. |
| CBYP (Pin 4) | Reference bypass | Connects to 0.01µF capacitor to GND to reduce output noise and improve PSRR; optional but recommended for noise-sensitive applications. |
| NC (Pins 5, 7, 8) | No connection | Internally unconnected; must remain unpopulated and unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| GND (Pin 6) | Ground reference | Main ground terminal; must be tied to exposed pad (EP) and system ground plane for optimal thermal performance and noise immunity. |
| VOUT2 (Pin 9) | Regulator 2 output | Delivers fixed 1.8V at up to 300mA; requires 1µF X7R/X5R ceramic capacitor directly at pin for stability. |
| VOUT1 (Pin 10) | Regulator 1 output | Delivers fixed 2.7V at up to 150mA; same capacitor requirement as VOUT2; supports tight regulation under dynamic load steps. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 allow asynchronous start-up/shutdown of 2.7V core and 1.8V I/O rails-eliminates need for external sequencing ICs in mobile SoC designs. |
| µCap ceramic-stable architecture | Stable with only 1µF X7R ceramic output capacitors per rail-reduces board area by >50% vs. traditional LDOs requiring 10–22µF tantalum. |
| Ultra-low quiescent current | 48µA total when both outputs disabled-enables <1µA system standby current when paired with intelligent host control. |
| Thermal shutdown & current limit | Integrated protection triggers at ~150°C junction temp and limits VOUT1 to 460mA / VOUT2 to 700mA-prevents damage during short-circuit or overload events. |
| Fixed-output configuration | No external feedback required for 2.7V/1.8V outputs-simplifies layout, reduces BOM count, and improves production yield vs. adjustable variants. |
Applications
| Cellular Baseband Power | Wireless Modem Core Supply |
|---|---|
Use Scenario: Powers ARM-based baseband processor in GSM/UMTS handset, supplying 2.7V to CPU core and 1.8V to memory/bus I/O. IC Role / Device Role / Timing Role: Dual-rail LDO regulator providing tightly regulated, low-noise DC supplies with independent enable control for power-state transitions. Use Value: Enables deep-sleep modes with 48µA total quiescent current while maintaining fast wake-up (<10µs) due to µCap architecture and CBYP-enhanced PSRR. | Use Scenario: Supplies 2.7V core and 1.8V interface rails for LTE modem chipset in portable hotspot device. IC Role / Device Role / Timing Role: Primary local regulator converting single-cell Li-ion (3.0–4.2V) to stable dual-voltage domain for RF and digital subsystems. Use Value: 80mV dropout at 100mA ensures >95% efficiency at light loads, extending runtime in intermittent-data transmission use cases. |
| PDA Application Processor Rail | Industrial Handheld Scanner |
Use Scenario: Delivers 2.7V and 1.8V to OMAP-like application processor in legacy PDA with QVGA display and SD card interface. IC Role / Device Role / Timing Role: Dual-output PMIC section managing core voltage scaling and I/O compatibility across peripheral interfaces. Use Value: ±2.0% output accuracy over –40°C to +125°C guarantees logic-level margin across extended temperature operation without derating. | Use Scenario: Powers barcode scanner ASIC and CMOS imager in ruggedized handheld scanner operating in warehouse environments. IC Role / Device Role / Timing Role: Compact, thermally robust dual LDO replacing discrete regulators to meet IPC-610 Class 2 reliability requirements. Use Value: Exposed-pad MLF™ package achieves 60°C/W θJA-maintains <100°C junction temp at full 300mA load even at 60°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70248PWPR | 2.5V/1.8V fixed outputs; higher 125µA quiescent current; 16-pin HTSSOP package; no CBYP pin. | Requires larger PCB area and lacks reference bypass for noise-sensitive RF sections. | Choose when higher output current (250mA/250mA) is needed and board space permits larger package. |
| NCP1117DTAR5G | Single-channel 1.8V LDO; 1A output; TO-252 package; 6mA quiescent current; no enable or dual-rail capability. | Cannot replace dual-output function without adding second regulator and sequencing logic. | Use only for cost-sensitive, non-portable applications where dual-rail independence is unnecessary. |
Compared with TPS70248PWPR and NCP1117DTAR5G, the MIC2211-LGYML-TR uniquely combines ultra-low quiescent current (48µA), dual independent enables, and ceramic-capacitor stability in a 3mm × 3mm footprint-making it the only option that satisfies simultaneous size, efficiency, and sequencing requirements for modern portable baseband power.
Availability
MIC2211-LGYML-TR is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, PDAs, and industrial handheld scanners requiring stable component supply with long-term lifecycle support.
Supply support for MIC2211-LGYML-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. Known for high-reliability, low-power ICs targeting portable and industrial markets.
The MIC2211 product line was designed specifically for dual-rail, battery-powered applications demanding minimal board space, ultra-low quiescent current, and ceramic-capacitor compatibility-addressing core power needs of 2G/3G baseband processors and early smartphone platforms.
FAQ
What are the exact output voltages of the MIC2211-LGYML-TR?
The MIC2211-LGYML-TR provides fixed output voltages of 2.7V on VOUT1 and 1.8V on VOUT2, as confirmed by Micrel's ordering information table where "LGY" corresponds to 2.7V/1.8V. These values are factory-trimmed and require no external feedback components-ensuring consistent performance across production lots without calibration.
Does the MIC2211-LGYML-TR support independent enable control for each output?
Yes, the MIC2211-LGYML-TR features separate EN1 (Pin 2) and EN2 (Pin 3) inputs, both active-high CMOS-compatible signals. Driving EN1 low disables only VOUT1 (2.7V), while EN2 low disables only VOUT2 (1.8V). This allows precise sequencing-for example, powering the core before I/O or entering partial sleep states-without external logic.
What capacitor values are required for stable operation of the MIC2211-LGYML-TR?
The MIC2211-LGYML-TR requires a 1µF X7R or X5R ceramic capacitor on each output (VOUT1 and VOUT2), placed as close as possible to the respective pins. Additionally, a 0.01µF ceramic capacitor is recommended between CBYP (Pin 4) and GND to improve PSRR and reduce output noise-though CBYP may be left open if noise sensitivity is low.
What is the maximum input voltage and operating temperature range for the MIC2211-LGYML-TR?
The MIC2211-LGYML-TR supports an input voltage range of 2.25V to 5.5V and is rated for operation from –40°C to +125°C junction temperature. Absolute maximum input is 7V, but sustained operation above 5.5V violates the specified operating rating and may impact reliability or accuracy.
How does the MIC2211-LGYML-TR achieve ultra-low quiescent current?
The MIC2211-LGYML-TR achieves 48µA total quiescent current through proprietary µCap biasing circuitry that minimizes reference and error-amplifier current draw. When both EN1 and EN2 are low, internal regulators enter zero-off-mode-drawing no supply current beyond leakage. This value is verified across temperature and process corners in Micrel's electrical characteristics table.
MIC2211-LGYML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, 10-MLF®
- 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):
- 2.7V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA, 0.42V @ 300mA
- Current - Output:
- 150mA, 300mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 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-MLF® (3x3)
MIC2211-LGYML-TR FAQ
1.How can I place an order for MIC2211-LGYML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2211-LGYML-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 MIC2211-LGYML-TR reliable?
The price and inventory of MIC2211-LGYML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2211-LGYML-TR is usually 5 days.
3.What payment methods are accepted for MIC2211-LGYML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2211-LGYML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2211-LGYML-TR?
MIC2211-LGYML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2211-LGYML-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 MIC2211-LGYML-TR?
For technical support, including MIC2211-LGYML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2211-LGYML-TR requirements.
6.How does Aetrix verify that MIC2211-LGYML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2211-LGYML-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 MIC2211-LGYML-TR meets industry standards.
7.What is the process for return or replacement of MIC2211-LGYML-TR?
All MIC2211-LGYML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2211-LGYML-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 MIC2211-LGYML-TR part is unused and in its original packaging.
Return procedure for MIC2211-LGYML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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