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Microchip Technology MIC2202BML-TR
- Part No.:
- MIC2202BML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2202BML-TR.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,707
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Product details
Overview
MIC2202BML-TR from Micrel Inc. is a high-efficiency, 2MHz synchronous buck DC-DC converter with internal MOSFETs, supporting 2.3V–5.5V input and adjustable 0.5V/600mA output. It operates in constant-frequency PWM mode, achieves >95% efficiency, and stabilizes with only a 1µF ceramic output capacitor and 2.2µH inductor-enabling compact power delivery for RF and portable applications.
For engineers reviewing the MIC2202BML-TR datasheet, MIC2202BML-TR pinout, MIC2202BML-TR application, or MIC2202BML-TR equivalent, key selection criteria include its 2MHz fixed-frequency operation, ultra-fast transient response (500kHz GBW), SYNC_IN/SYNC_OUT daisy-chain capability, 10-pin MLF® package thermal performance (θJA = 60°C/W), and logic-controlled micropower shutdown (<1µA).
Technical Context
The MIC2202BML-TR implements voltage-mode PWM control with an internally compensated 2MHz oscillator and a proprietary ramp generator. Its error amplifier compares FB voltage to 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), features a dedicated BIAS pin regulated at 2.3V (±0.12V) for internal circuitry, and includes thermal shutdown (160°C) and current limit protection (1.0–2.5A). The device maintains 1% line and load regulation across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - powers directly from single Li-ion, USB, or regulated intermediate rails without pre-regulation. |
| Output Voltage Range | Adjustable down to 0.5V - enables core voltage scaling for low-voltage ASICs, FPGAs, and RF ICs. |
| Switching Frequency | 2MHz (typ), 1.8–2.2MHz (min–max) - enables use of tiny passive components and avoids AM/FM/IF interference bands. |
| Output Current | 600mA continuous - sufficient for baseband processors, RF power amps, and memory I/O rails in handheld devices. |
| Feedback Reference | 0.5V ±2.5% - sets output via resistor divider; enables accurate 1.2V, 1.8V, 2.5V, 3.3V, or custom voltages with <0.5% load regulation error. |
| Quiescent Current | 350–450µA (active), <1µA (shutdown) - minimizes battery drain during sleep modes in portable electronics. |
| Thermal Resistance | θJA = 60°C/W (3mm×3mm MLF®) - allows >1W dissipation at 25°C ambient without heatsink in typical PCB layouts. |
Pinout & Package
Package: 10-pin 3mm × 3mm MLF® (MicroLeadFrame) with exposed ground pad (EP), RoHS-compliant, Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Drives external inductor; connects internal high-side P-MOS and low-side N-MOS drains - requires low-inductance layout to minimize EMI. |
| 2 (VIN) | Input Supply | Primary power input (2.3–5.5V); must be bypassed with ≥1µF X5R/X7R ceramic capacitor close to pin. |
| 3 (SYNC_IN) | Sync Input | Accepts external clock (1.6–2.5MHz) to align switching frequency; threshold 0.7–1.7V; max pulse width 10ns. |
| 4 (SYNC_OUT) | Sync Output | Open-collector output mirroring internal oscillator; requires 10kΩ pull-up for master-slave daisy-chaining. |
| 5 (EN) | Enable Control | Logic-level input (0.5–1.3V threshold); pulls device into <1µA shutdown when low; hysteresis 20mV. |
| 6 (FB) | Feedback Input | Connects to resistor divider from VOUT; senses 0.5V reference to regulate output; sensitive to noise - requires short trace and feed-forward cap if R1 >10kΩ. |
| 7 (BIAS) | Bias Regulator Output | Internal 2.3V supply for control circuitry; must be decoupled with 10nF ceramic capacitor - not for external loading. |
| 8, 9, 10 (GND) | Ground Terminals | Three dedicated signal GND pins plus EP (backside pad) - all must connect to low-impedance ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| 1µF Ceramic Output Stability | Eliminates need for large electrolytics or tantalums - reduces board area by >40% and improves reliability over temperature. |
| Ultra-Fast Transient Response | 500kHz gain-bandwidth enables sub-1µs recovery from 50% load steps - critical for CPU core and RF PA dynamic supply demands. |
| Synchronous MOSFET Integration | Eliminates external Schottky diode - improves efficiency by 5–10% vs. asynchronous designs and reduces component count. |
| SYNCLOCK Daisy-Chain Capability | Enables phase-aligned multi-rail operation without external timing ICs - simplifies layout and reduces EMI in dense RF modules. |
| Internal Compensation | Removes need for external compensation network - accelerates design cycle and ensures stability with standard 2.2µH/1µF BOM. |
Applications
| Cellular Phone Power Management | 802.11 WLAN Baseband Supply |
|---|---|
Use Scenario: Powers baseband processor and RF transceiver in dual-mode GSM/UMTS handsets requiring fast load transient response and low-noise operation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.2V/600mA to application processor core with 2MHz fixed-frequency PWM to avoid IF band interference. Use Value: Achieves >92% efficiency at 3.6VIN/1.2VOUT and recovers from 100→600mA step in <500ns - extending battery life and preventing RF desense. | Use Scenario: Supplies 3.3V to WLAN MAC/PHY ICs in compact client adapters where EMI and board space are tightly constrained. IC Role / Device Role / Timing Role: Adjustable buck converter synchronized to system clock via SYNC_IN to shift harmonics away from 2.4GHz ISM band. Use Value: Enables use of 1µF X5R output cap and 2.2µH shielded inductor - reducing solution size to <25mm² while maintaining <10mVpp ripple. |
| FPGA I/O Bank Regulation | CDMA/W-CDMA RF Power Amplifier Supply |
Use Scenario: Generates configurable 1.8V, 2.5V, or 3.3V for FPGA I/O banks in portable instrumentation with strict thermal limits. IC Role / Device Role / Timing Role: High-bandwidth (500kHz GBW) voltage-mode regulator with 1% load regulation - ensuring stable I/O signaling margins under dynamic data traffic. Use Value: Delivers 600mA with <0.5% output deviation across 0–600mA load range and –40°C to +85°C - eliminating need for post-regulation LDOs. | Use Scenario: Provides dynamically adjustable supply (1.5–3.3V) to CDMA/W-CDMA RF PAs during envelope tracking or power ramping sequences. IC Role / Device Role / Timing Role: Synchronously adjustable buck regulator with EN-controlled sequencing and fast transient response - enabling real-time PA efficiency optimization. Use Value: Supports <10µs output voltage slewing via FB divider reconfiguration while maintaining <20mV overshoot - improving PA linearity and ACLR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 2.25MHz fixed frequency, 0.6V ref, 600mA, 6-pin WSON - smaller footprint but no SYNC_IN/SYNC_OUT or BIAS pin. | Lacks daisy-chain sync and bias rail; less suitable for multi-rail phase-aligned systems or noise-sensitive RF sections. | Prefer for space-constrained, single-rail applications where sync and bias functionality are unnecessary. |
| RT8059NGSP | 1.5MHz, 0.6V ref, 600mA, 10-pin QFN - includes soft-start and power-good, but no sync capability and higher quiescent current (25µA active). | Offers PG and SS for sequencing-critical systems, but lacks 2MHz speed and sync flexibility for RF coexistence. | Prefer when power-good signaling and controlled startup are required, and 2MHz operation is not mandatory. |
Compared with TPS62231DRYR and RT8059NGSP, the MIC2202BML-TR uniquely combines 2MHz operation, SYNC_IN/SYNC_OUT daisy-chaining, and a dedicated BIAS rail - making it optimal for compact, multi-rail, RF-dense portable designs where EMI control and fast transient response are non-negotiable.
Availability
MIC2202BML-TR is available at Aetrix Electronics and suitable for cellular phone power management, 802.11 WLAN baseband supplies, FPGA I/O bank regulation, and CDMA/W-CDMA RF power amplifier supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for MIC2202BML-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 fabless semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC2202 product line was designed for high-density, battery-powered portable electronics requiring ultra-small DC-DC solutions with minimal external components and superior RF-friendly noise performance.
FAQ
What is the minimum output capacitor value supported by the MIC2202BML-TR?
The MIC2202BML-TR is specifically designed to be stable with a 1µF ceramic output capacitor (X5R or X7R dielectric). Using Y5V or Z5U capacitors is prohibited due to instability risk. Total output capacitance must not exceed 15µF to prevent current-limit activation during startup; larger values require a feed-forward capacitor from VOUT to FB.
Does the MIC2202BML-TR support external synchronization, and what is the valid frequency range?
Yes, the MIC2202BML-TR supports external synchronization via the SYNC_IN pin across 1.6MHz to 2.5MHz. This allows harmonic alignment or shifting to avoid sensitive RF bands. The SYNC_OUT pin provides an open-collector copy of the internal oscillator frequency and enables master-slave daisy-chaining of multiple MIC2202BML-TR units.
What is the function of the BIAS pin on the MIC2202BML-TR, and how must it be used?
The BIAS pin delivers a regulated 2.3V internal supply for control circuitry. It must be decoupled with a 10nF ceramic capacitor to signal ground and must not be loaded externally. Using the BIAS pin as a power source for other components will degrade regulation accuracy and may cause instability in the MIC2202BML-TR.
What protection features are integrated into the MIC2202BML-TR?
The MIC2202BML-TR integrates thermal shutdown (160°C with 20°C hysteresis), current limit protection (1.0–2.5A), and logic-controlled micropower shutdown (<1µA). It also includes internal compensation and robust ESD tolerance (2kV HBM), eliminating the need for external fault-handling circuitry in most portable applications.
Can the MIC2202BML-TR operate with input voltages below 2.3V?
No - the MIC2202BML-TR 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, a different regulator architecture (e.g., boost or buck-boost) is required.
MIC2202BML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, 10-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
MIC2202BML-TR FAQ
1.How can I place an order for MIC2202BML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2202BML-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 MIC2202BML-TR reliable?
The price and inventory of MIC2202BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2202BML-TR is usually 5 days.
3.What payment methods are accepted for MIC2202BML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2202BML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2202BML-TR?
MIC2202BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2202BML-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 MIC2202BML-TR?
For technical support, including MIC2202BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2202BML-TR requirements.
6.How does Aetrix verify that MIC2202BML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2202BML-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 MIC2202BML-TR meets industry standards.
7.What is the process for return or replacement of MIC2202BML-TR?
All MIC2202BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2202BML-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 MIC2202BML-TR part is unused and in its original packaging.
Return procedure for MIC2202BML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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