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Microchip Technology MIC2202YML
- Part No.:
- MIC2202YML
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2202YML.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
MIC2202YML from Micrel Inc. is a high-efficiency, 2MHz synchronous buck DC-DC converter optimized for space-constrained portable electronics. It delivers up to 600mA output current with adjustable output down to 0.5V, operates from 2.3V–5.5V input, and achieves >95% efficiency using only a 1µF ceramic output capacitor and 2.2µH inductor - enabling compact, low-cost power solutions for RF and audio subsystems.
For engineers reviewing the MIC2202YML datasheet, MIC2202YML pinout, MIC2202YML application, or MIC2202YML equivalent, key selection criteria include its 2MHz fixed-frequency PWM operation, ultra-fast transient response (500kHz GBW), internal MOSFET integration, SYNC_IN/SYNC_OUT daisy-chain capability, and Pb-free 10-pin 3mm × 3mm MLF® package with thermal performance (θJA = 60°C/W).
Technical Context
The MIC2202YML implements voltage-mode PWM control with an internally compensated 2MHz oscillator and a proprietary ramp-based feedback loop. Its error amplifier compares FB voltage against a precise 0.5V reference, driving a high-side P-channel and low-side N-channel synchronous MOSFET pair.
It supports external synchronization (1.6–2.5MHz), master-slave daisy-chaining via open-collector SYNC_OUT, and features a dedicated BIAS pin (2.3V ±5%) requiring 10nF decoupling. Thermal shutdown (160°C) and cycle-by-cycle current limiting (1.0–2.5A) ensure robust operation across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, Li-poly, and 3.3V/5V rail inputs without pre-regulation. |
| Output Voltage | Adjustable down to 0.5V - set via external resistor divider on FB pin; enables core voltage scaling for CPUs, FPGAs, and RF ICs. |
| Max Output Current | 600mA continuous - sufficient for baseband processors, WLAN transceivers, and sensor hubs in handheld devices. |
| Switching Frequency | 2MHz (±10%) - enables use of tiny passive components and minimizes EMI in sensitive RF bands. |
| Efficiency | >95% at 3.3VOUT/4.2VIN/300mA - reduces thermal load and extends battery life in portable applications. |
| Stability | Stable with 1µF X5R/X7R ceramic output capacitor - eliminates need for electrolytic or tantalum capacitors, improving reliability and size. |
| Quiescent Current | ≤1µA in shutdown (EN = low) - critical for maintaining ultra-low standby power in always-on systems. |
Pinout & Package
Package: 10-pin 3mm × 3mm MLF® (MicroLeadFrame) with exposed thermal pad (EP), Pb-free, RoHS-compliant. Thermal resistance θJA = 60°C/W enables high-power density without heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Drives external inductor; connects internal high-side P-MOS and low-side N-MOS; requires low-inductance layout. |
| 2 VIN | Input supply | Primary power input (2.3–5.5V); must be bypassed with ≥1µF ceramic capacitor close to pin. |
| 3 SYNC_IN | External sync input | Accepts 1.6–2.5MHz clock; overrides internal oscillator; threshold 0.7–1.7V; max pulse width 10ns. |
| 4 SYNC_OUT | Sync output | Open-collector output; used to daisy-chain multiple MIC2202YMLs; requires 10kΩ pull-up to VIN. |
| 5 EN | Enable control | Active-high logic input; 0.5–1.3V threshold with 20mV hysteresis; <1µA shutdown current. |
| 6 FB | Feedback input | Connects to resistor divider; regulates output by comparing to 0.5V internal reference (±2.5%). |
| 7 BIAS | Internal bias supply | 2.3V regulated output for internal circuitry; requires 10nF ceramic bypass; not for external loading. |
| 8,9,10 GND | Ground terminals | Three dedicated ground pins plus EP pad - minimize ground impedance and improve thermal dissipation. |
| EP | Exposed pad | Thermal and electrical ground; must be soldered to PCB ground plane for optimal θJA and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| 2MHz fixed-frequency PWM | Enables consistent EMI filtering and predictable harmonic placement - essential for coexistence with cellular, Wi-Fi, and Bluetooth radios. |
| Synchronous rectification | Integrated high-side P-MOS and low-side N-MOS eliminate external Schottky diode, reducing conduction loss and board area. |
| Ultra-fast transient response | 500kHz gain-bandwidth enables sub-microsecond recovery from load steps - critical for CPU core and RF PA dynamic supply demands. |
| 1µF ceramic capacitor stability | Eliminates need for large bulk capacitance, reduces BOM count, improves reliability, and shrinks footprint vs. traditional buck regulators. |
| SYNCLOCK daisy-chain | Allows multiple MIC2202YMLs to lock to one master clock - synchronizes switching edges and suppresses beat frequencies in multi-rail systems. |
| Internal compensation | Removes external compensation network, simplifying design, reducing component count, and ensuring stable operation across all valid L/C combinations. |
Applications
| Cellular Phone Power Management | Wi-Fi/Bluetooth Baseband Supply |
|---|---|
|
Use Scenario: Providing dynamically adjustable VCC to CDMA/W-CDMA RF power amplifiers during transmit/receive mode transitions. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering 0.5–3.3V at up to 600mA with fast load-step response and low-noise 2MHz switching. Use Value: Enables efficient envelope tracking and supply modulation while minimizing conducted EMI into adjacent RF receivers. |
Use Scenario: Generating clean, low-noise 1.8V or 3.3V supply for 802.11 WLAN MAC/baseband ICs in smartphones and tablets. IC Role / Device Role / Timing Role: Primary point-of-load regulator with SYNC_IN tied to system clock to avoid interference with 2.4GHz/5GHz RF bands. Use Value: Reduces spectral noise overlap through frequency synchronization, improving WLAN sensitivity and throughput. |
| FPGA Core Voltage Regulation | DSL Modem Line Card Power |
|
Use Scenario: Delivering tightly regulated 1.2V core voltage to low-power FPGA fabric with rapid current transients during configuration and logic switching. IC Role / Device Role / Timing Role: Adjustable buck converter with 0.5V reference and 1% line/load regulation, operating from 3.3V or 5V backplane rails. Use Value: Maintains stable core voltage under dynamic loads, preventing timing violations and logic errors during high-speed operation. |
Use Scenario: Powering analog front-end (AFE) and digital signal processor (DSP) sections in ADSL/VDSL modems with strict thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, thermally optimized regulator in compact MLF package, supporting –40°C to +125°C industrial temperature range. Use Value: Delivers >95% efficiency at mid-load, minimizing heat buildup in sealed modem enclosures and extending product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 2.25MHz fixed-frequency, 600mA, 2.05–6.0V input, 0.6V min output; requires ≥2.2µF output cap; no SYNC_IN. | Lacks synchronization capability and 1µF stability - unsuitable for RF-coexistence-critical designs. | Prefer MIC2202YML when 2MHz sync, ultra-small output caps, or daisy-chaining are required. |
| RT8059ZSP | 1.5MHz, 600mA, 2.5–5.5V input, 0.6V min output; 10-pin MSOP only; no SYNC_IN/SYNC_OUT; θJA = 115°C/W. | Higher thermal resistance and no synchronization - limits use in dense, thermally constrained layouts. | Prefer MIC2202YML for MLF thermal performance (60°C/W), sync flexibility, and smaller solution size. |
Compared with TPS62231DRVR and RT8059ZSP, the MIC2202YML uniquely combines 2MHz synchronization, 1µF ceramic stability, and 60°C/W thermal resistance in a Pb-free MLF package - making it the optimal choice for RF-sensitive, space-limited, and thermally demanding portable power designs.
Availability
MIC2202YML is available at Aetrix Electronics and suitable for cellular phone power management, Wi-Fi baseband supplies, FPGA core regulation, and DSL modem line card applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for MIC2202YML 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-performance, application-optimized ICs.
The MIC2202 family was designed specifically for ultra-compact, high-efficiency DC-DC conversion in battery-powered RF and portable electronics - emphasizing minimal external components, fast transient response, and EMI-aware switching architecture.
FAQ
What is the minimum output capacitor value supported by the MIC2202YML?
The MIC2202YML is explicitly designed and characterized for stable operation with a 1µF X5R or X7R ceramic output capacitor. Using Y5V or Z5U dielectrics is prohibited due to capacitance loss and high-frequency resistive behavior that causes instability. Total output capacitance must not exceed 15µF to prevent startup current-limit triggering.
Does the MIC2202YML require external compensation components?
No, the MIC2202YML features fully internal compensation optimized for voltage-mode control. It requires no external RC networks on the FB pin or elsewhere. Stability is guaranteed with standard 1µF/2.2µH, 2.2µF/1µH, or 1µF/4.7µH L-C combinations - simplifying layout and reducing BOM cost.
How does the SYNCLOCK feature work in the MIC2202YML?
The MIC2202YML's SYNCLOCK uses its open-collector SYNC_OUT pin to drive the SYNC_IN pin of another MIC2202YML. When configured as master, the first device's SYNC_OUT toggles at its switching frequency; the slave locks its internal oscillator to match. This eliminates beat frequencies and aligns harmonics - critical for multi-rail noise-sensitive systems.
What is the function of the BIAS pin on the MIC2202YML?
BIAS is a dedicated 2.3V internal linear regulator output supplying bias current to the MIC2202YML's control circuitry. It must be decoupled with a 10nF ceramic capacitor to ground. It is not intended for external loading - connecting external circuits risks regulation failure and instability.
Can the MIC2202YML operate with input voltages below 2.3V?
No. The MIC2202YML has a specified minimum input voltage of 2.3V per absolute maximum and operating ratings. Operation below this level is not guaranteed and may result in dropout, regulation loss, or undefined behavior. For sub-2.3V inputs, consider alternative regulators such as the MIC2295 or similar ultra-low-VIN buck converters.
MIC2202YML Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, 10-MLF®
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MLF® (3x3)
MIC2202YML FAQ
1.How can I place an order for MIC2202YML through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2202YML 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 MIC2202YML reliable?
The price and inventory of MIC2202YML are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2202YML is usually 5 days.
3.What payment methods are accepted for MIC2202YML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2202YML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2202YML?
MIC2202YML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2202YML 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 MIC2202YML?
For technical support, including MIC2202YML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2202YML requirements.
6.How does Aetrix verify that MIC2202YML is sourced from the original manufacturer or authorized distributors?
All MIC2202YML 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 MIC2202YML meets industry standards.
7.What is the process for return or replacement of MIC2202YML?
All MIC2202YML units undergo pre-shipment inspection (PSI). If there is an issue with MIC2202YML, 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 MIC2202YML part is unused and in its original packaging.
Return procedure for MIC2202YML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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