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Microchip Technology MIC2203YMM
- Part No.:
- MIC2203YMM
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC2203YMM.pdf
- Description:
- IC REG BUCK ADJ 300MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,641
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Product details
Overview
MIC2203YMM from Micrel is a high-efficiency, 1MHz synchronous buck regulator delivering up to 300mA output current with adjustable output down to 0.5V, operating from 2.3V–5.5V input. It features <1mA switching supply current, <350µA quiescent current, and SYNCLOCK daisy-chain capability-designed for RF and audio power rails in portable wireless devices.
For engineers reviewing the MIC2203YMM datasheet, MIC2203YMM pinout, MIC2203YMM application, or MIC2203YMM equivalent, key selection criteria include its MSOP-10L package, 1MHz constant-frequency PWM operation, ultra-fast transient response enabled by high loop bandwidth, and support for all-ceramic capacitor designs without external compensation.
Technical Context
The MIC2203YMM implements voltage-mode PWM control with an internal 1MHz ramp generator and error amplifier referenced to a 0.5V feedback threshold. Its high loop bandwidth enables sub-microsecond transient response, reducing required output capacitance to 2.2µF ceramic.
It integrates a P-channel high-side and N-channel low-side MOSFET with typical 1.5Ω combined ON-resistance at 300mA. The device supports external synchronization (800kHz–1.25MHz) via SYNC_IN and master-slave daisy-chaining via open-collector SYNC_OUT with 50ns pulse width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, 3.3V/5V rails, and wide battery discharge profiles. |
| Output Current | 300mA - sufficient for RF transceivers, audio codecs, and low-power microcontrollers. |
| Switching Frequency | 1MHz (±20%) - enables compact 10µH inductor and 2.2µF ceramic output capacitor design. |
| Feedback Reference | 0.5V ±2.5% - sets output voltage via resistor divider; allows 0.5V–5.0V adjustment range. |
| Quiescent Current | <350µA - minimizes standby power loss in always-on subsystems like WLAN baseband. |
| Shutdown Current | <1µA - enables deep-sleep mode in portable applications without leakage concerns. |
| Thermal Range | –40°C to +125°C junction - qualified for automotive infotainment and industrial handheld environments. |
Pinout & Package
Package: 10-pin MSOP (3mm × 3mm, 0.5mm pitch), exposed pad not present - compatible with standard reflow and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node Output | Drives external inductor; connects to internal P- and N-MOSFET junction - requires low-inductance layout to minimize EMI. |
| 2 VIN | Power Input | Supplies both power stage and internal bias; requires ≥1µF X5R/X7R ceramic bypass to GND. |
| 3 SYNC_IN | External Clock Input | Accepts 800kHz–1.25MHz TTL/CMOS clock; ties to GND when unused to prevent noise coupling. |
| 4 SYNC_OUT | Synchronization Pulse Output | Open-collector 50ns sync pulse; requires external 10kΩ pull-up for daisy-chaining multiple MIC2203YMM units. |
| 5 EN | Enable Control | Active-high logic input; <0.5V disables regulator, reducing IQ to <1µA and tri-stating SW node. |
| 6 FB | Feedback Input | Connects to resistor divider; compares against 0.5V internal reference to regulate VOUT - sensitive to noise, requires short trace. |
| 7 BIAS | Internal Bias Supply | 2.3V nominal internal LDO output; requires mandatory 10nF ceramic bypass - not for external loading. |
| 8–10 GND | Signal & Power Ground | Common return for VIN, SW, FB, and EN; must be low-impedance plane connected to thermal pad of PCB. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Stable operation with 1µF input and 2.2µF X5R/X7R output capacitors - eliminates electrolytic/tantalum, improving reliability and temperature stability. |
| SYNCLOCK daisy-chain capability | Enables precise frequency alignment across multiple MIC2203YMM regulators - reduces beat frequencies and simplifies EMI filtering in multi-rail systems. |
| Ultra-fast transient response | High loop bandwidth delivers sub-2µs recovery from 50% load step - critical for CPU core and RF PA supply regulation. |
| Low-noise constant-frequency PWM | Fixed 1MHz switching avoids variable-frequency artifacts (e.g., burst mode) - prevents interference with 2.4GHz WLAN and Bluetooth receivers. |
| Integrated thermal shutdown & current limit | Protects against overload and PCB overheating without external circuitry - triggers at ~160°C with 20°C hysteresis. |
Applications
| 802.11 WLAN Modules | MP3/MD Audio Players |
|---|---|
Use Scenario: Powering 2.4GHz RF transceiver ICs and baseband processors in compact Wi-Fi modules. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying regulated 1.8V/2.5V/3.3V rails with low ripple and fast load-step response. Use Value: 1MHz fixed-frequency operation avoids spectral overlap with WLAN channels; <350µA quiescent current extends battery life during receive standby. |
Use Scenario: Generating clean, low-noise analog and digital supply rails for audio DACs, amplifiers, and flash memory controllers. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering stable 1.2V–3.3V outputs with minimal conducted EMI into sensitive audio signal paths. Use Value: All-ceramic capacitor compatibility eliminates piezoelectric noise from tantalum; <1mA supply current preserves playback time in battery-powered players. |
| High-Performance Cellular Handsets | PDAs & Portable Diagnostic Devices |
Use Scenario: Supplying dynamic core voltage to application processors and RF front-end ICs during burst-mode transmission. IC Role / Device Role / Timing Role: Fast-transient buck regulator synchronized to system clock to align switching harmonics away from IF bands. Use Value: SYNC_IN/OUT daisy-chaining ensures harmonic coherence across multiple rails; 300mA output supports dual-core SoC peak loads. |
Use Scenario: Providing isolated, low-noise power to precision ADCs, sensor interfaces, and wireless telemetry subsystems. IC Role / Device Role / Timing Role: Adjustable-output buck regulator powering mixed-signal circuits requiring stable 0.5V–3.3V with minimal PSRR degradation. Use Value: 0.5V feedback reference enables accurate low-VOUT regulation; –40°C to +125°C rating supports medical-grade environmental compliance. |
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 | 3MHz switching frequency, 400mA output, 2.05V–6.0V input - higher frequency enables smaller passives but increases switching loss at >200mA. | Optimized for ultra-compact space-constrained designs (e.g., wearables); less suitable for RF-sensitive 2.4GHz bands due to 3rd-harmonic proximity. | Select when board area is critical and EMI filtering can accommodate 3MHz fundamentals; verify RF coexistence in final layout. |
| RT8059GJ6 | 1.5MHz fixed frequency, 600mA output, 2.5V–5.5V input - higher current but no SYNC_IN/OUT; uses external compensation. | Targeted at cost-sensitive consumer electronics; lacks daisy-chain capability and requires additional compensation components. | Choose for higher-current, non-synchronized applications where layout simplicity outweighs synchronization needs. |
Compared with TPS62231DRVR and RT8059GJ6, the MIC2203YMM uniquely balances 1MHz EMI predictability, 300mA capability, and SYNCLOCK daisy-chaining in an MSOP-10L package - making it optimal for multi-rail RF/audio systems requiring harmonic coordination and low-quiescent operation.
Availability
MIC2203YMM is available at Aetrix Electronics and suitable for 802.11 WLAN modules, MP3/MD audio players, and high-performance cellular handsets requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MIC2203YMM 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 (acquired by Microchip in 2015) was a U.S.-based analog and power management IC designer focused on high-performance, low-noise power solutions for communications and portable electronics.
The MIC2203 product line was engineered specifically for RF- and audio-sensitive applications demanding low-noise, constant-frequency PWM regulation with fast transient response and synchronization flexibility.
FAQ
What is the recommended input and output capacitor configuration for MIC2203YMM?
The MIC2203YMM requires a minimum 1µF X5R/X7R ceramic capacitor on VIN and a 2.2µF X5R ceramic capacitor on VOUT. Y5V/Z5U dielectrics are prohibited due to capacitance loss and high-frequency resistance causing instability. Total output capacitance must not exceed 3µF to maintain loop stability without external compensation.
Does MIC2203YMM support adjustable output voltage, and how is it set?
Yes, MIC2203YMM supports adjustable output from 0.5V to 5.0V using a resistor divider on the FB pin. With a 0.5V internal reference, R2 = R1 × (VOUT / 0.5 − 1). A 10kΩ top resistor is recommended; larger values require feed-forward capacitance to counteract parasitic pole formation and noise susceptibility at the FB node.
Can MIC2203YMM be synchronized to an external clock, and what is the valid frequency range?
Yes, MIC2203YMM accepts external synchronization via the SYNC_IN pin across 800kHz to 1.25MHz. The SYNC_OUT pin provides a 50ns open-collector pulse synchronized to the internal oscillator, enabling reliable daisy-chaining of multiple MIC2203YMM units for harmonic alignment in multi-rail systems.
What protection features are integrated into MIC2203YMM?
MIC2203YMM includes thermal shutdown with ~160°C trip point and 20°C hysteresis, cycle-by-cycle current limiting (typ. 0.6A), and undervoltage lockout on VIN. During shutdown (EN = low), the SW node is tri-stated - both internal MOSFETs are off - preventing backfeed and ensuring safe rail sequencing.
Is MIC2203YMM pin-compatible with other variants in the MIC2203 family?
Yes, MIC2203YMM shares identical pinout and footprint with MIC2203BMM (both MSOP-10L), differing only in Pb-free compliance and minor parametric binning. It is not pin-compatible with MLF-10L variants (e.g., MIC2203YML), which have different thermal pad configuration and land pattern requirements.
MIC2203YMM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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:
- 300mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
MIC2203YMM FAQ
1.How can I place an order for MIC2203YMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2203YMM 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 MIC2203YMM reliable?
The price and inventory of MIC2203YMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2203YMM is usually 5 days.
3.What payment methods are accepted for MIC2203YMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2203YMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2203YMM?
MIC2203YMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2203YMM 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 MIC2203YMM?
For technical support, including MIC2203YMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2203YMM requirements.
6.How does Aetrix verify that MIC2203YMM is sourced from the original manufacturer or authorized distributors?
All MIC2203YMM 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 MIC2203YMM meets industry standards.
7.What is the process for return or replacement of MIC2203YMM?
All MIC2203YMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC2203YMM, 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 MIC2203YMM part is unused and in its original packaging.
Return procedure for MIC2203YMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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