My Inquiry
My Account
Microchip Technology MIC2203BMM-TR
- Part No.:
- MIC2203BMM-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC2203BMM-TR.pdf
- Description:
- IC REG BUCK ADJ 300MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,478
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2203BMM-TR from Micrel is a high-efficiency, 1MHz synchronous buck regulator IC designed for low-noise power conversion in RF and audio subsystems. It operates from 2.3V to 5.5V input, delivers up to 300mA output current, regulates down to 0.5V via external resistor divider, and features <1mA quiescent supply current - making it ideal for battery-powered 802.11 WLAN modules and portable media players.
For engineers reviewing the MIC2203BMM-TR datasheet, MIC2203BMM-TR pinout, MIC2203BMM-TR application, or MIC2203BMM-TR equivalent, key selection criteria include its adjustable output voltage capability, SYNC_IN/SYNC_OUT daisy-chain synchronization, ultra-fast transient response enabled by high loop bandwidth, and MSOP-10L package compatibility with space-constrained handheld designs.
Technical Context
The MIC2203BMM-TR implements voltage-mode PWM control with an internal 1MHz ramp generator and 0.5V reference error amplifier. Its architecture integrates a high-side P-channel and low-side N-channel MOSFET pair, eliminating external diode requirements and enabling synchronous rectification for >95% peak efficiency.
It supports external clock synchronization from 0.8MHz to 1.25MHz via SYNC_IN and provides a 50ns SYNC_OUT pulse for master-slave cascading. Thermal shutdown, current limiting, and <1µA shutdown current ensure robust operation across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, Li-polymer, and 3.3V/5V rail inputs without pre-regulation. |
| Output Current | 300mA - sufficient for powering RF transceivers, audio codecs, or baseband processors in compact devices. |
| Switching Frequency | 1MHz (typical), adjustable 0.8–1.25MHz - enables small external LC components and predictable EMI filtering. |
| Feedback Reference | 0.5V ±2.5% - sets precise output voltage via resistor divider; allows 0.5V–5.0V regulation with standard 1% resistors. |
| Quiescent Current | <1mA (switching), <350µA (no load), <1µA (shutdown) - extends battery life in standby and active modes. |
| Package | MSOP-10L (3mm × 3mm × 1.1mm) - surface-mount compatible with automated assembly and thermal performance θJA = 115°C/W. |
| Protection Features | Thermal shutdown, cycle-by-cycle current limit, and undervoltage lockout - prevent fault propagation in dense PCB layouts. |
Pinout & Package
Package: 10-pin MSOP (Micrel MSOP-10L, JEDEC MO-187 variant), 3mm × 3mm body, 0.5mm pitch, exposed pad not electrically connected (non-GND in MM variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node Output | Drives external inductor; connects to internal high-side P-MOSFET drain and low-side N-MOSFET source. |
| 2 VIN | Main Power Input | Supplies both power stage and internal bias; requires ≥1µF ceramic bypass capacitor to GND. |
| 3 SYNC_IN | External Clock Input | Accepts TTL/CMOS-compatible sync signal (0.7–1.7V threshold); ties to GND when unused. |
| 4 SYNC_OUT | Synchronization Pulse Output | Open-drain 50ns pulse at oscillator frequency; requires external 10kΩ pull-up for daisy-chaining. |
| 5 EN | Enable Control | Active-high logic input (0.7V threshold, 20mV hysteresis); places device in ultra-low-power shutdown (<1µA). |
| 6 FB | Feedback Input | Connects to resistor divider; compares against 0.5V internal reference to regulate output voltage. |
| 7 BIAS | Internal Bias Supply | 2.3V nominal output for internal circuitry; requires 10nF ceramic bypass; not for external loading. |
| 8,9,10 GND | Signal Ground | Common return path for power stage, control logic, and feedback network; connect all three pins to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables use of X5R/X7R 1µF input and 2.2µF output capacitors - eliminates electrolytics, reduces footprint, improves reliability. |
| SYNCLOCK daisy-chain capability | Allows multiple MIC2203BMM-TR units to share one master clock - eliminates beat frequencies and simplifies EMI filter design in multi-rail systems. |
| Ultra-fast transient response | High loop bandwidth (>100kHz gain bandwidth) minimizes output voltage droop during load steps - critical for CPU core and RF PA supply rails. |
| Low-noise constant-frequency PWM | Fixed 1MHz switching avoids frequency modulation artifacts - preserves SNR in sensitive analog/RF signal chains. |
| Integrated dual-MOSFET power stage | Eliminates external Schottky diode and gate drivers - reduces BOM count, layout area, and conduction losses. |
Applications
| 802.11 WLAN Modules | MP3/MD Portable Players |
|---|---|
Use Scenario: Powering 2.5V or 3.3V RF transceiver and baseband ICs in mini-PCIe or SDIO-based Wi-Fi modules. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying regulated VCC for WLAN chipset; synchronized to system clock to avoid IF band interference. Use Value: 1MHz fixed-frequency operation enables deterministic harmonic placement outside 2.4GHz ISM band; <1mA quiescent current extends standby time. |
Use Scenario: Generating clean 1.8V core supply for audio DSP and 3.3V I/O rail for flash memory and display interface in palm-sized media players. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering low-noise power to noise-sensitive audio circuits; FB pin adjusted for precise voltage scaling. Use Value: >95% efficiency at 100–300mA loads conserves battery capacity; all-ceramic design prevents microphonic noise coupling into audio path. |
| Cellular Handset Baseband | PDA Application Processors |
Use Scenario: Providing dynamically scalable 1.2V–1.5V supply to ARM9/ARM11 application processors during DVFS transitions in legacy 2G/3G handsets. IC Role / Device Role / Timing Role: Core voltage regulator with fast transient response; EN pin controlled by PMIC to enable/disable per operating mode. Use Value: Sub-10µs load-step recovery minimizes voltage sag during CPU burst activity; 0.5V feedback reference enables accurate low-VOUT setting with 1% resistors. |
Use Scenario: Delivering stable 1.8V or 2.5V supply to PDA main processor, LCD controller, and USB PHY in compact clamshell form factors. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator; SYNC_IN tied to system clock to align switching harmonics with non-critical timing windows. Use Value: MSOP-10L package fits tight board real estate; thermal shutdown protects against overheating in sealed plastic enclosures. |
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 fixed-frequency, 300mA, 0.6V reference, 1.8–6.5V input, WSON-6 package | Higher switching frequency enables smaller inductors but increases switching losses at >200mA loads | Prefer TPS62231DRVR where board space is more constrained than efficiency; verify thermal derating in MSOP footprint replacement. |
| RT8059ZSP | 1.5MHz fixed-frequency, 600mA, 0.6V reference, 2.5–5.5V input, TSOT-23-6 package | Doubles output current rating but lacks SYNC_IN/SYNC_OUT and has higher quiescent current (25µA typical) | Choose RT8059ZSP only if higher current headroom is required and synchronization is unnecessary; note different pinout and no BIAS pin. |
Compared with TPS62231DRVR and RT8059ZSP, the MIC2203BMM-TR offers unique advantages in low-noise 1MHz operation, ultra-low quiescent current, and daisy-chain synchronization - making it optimal for RF-sensitive, battery-constrained applications where EMI predictability and standby longevity are prioritized over raw current capability or minimal footprint.
Availability
MIC2203BMM-TR is available at Aetrix Electronics and suitable for 802.11 WLAN modules, MP3/MD portable players, and cellular handset baseband power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC2203BMM-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 (acquired by Microchip Technology in 2015) was a U.S.-based analog and power management IC designer focused on high-performance, low-power solutions for communications and consumer electronics.
The MIC2203 product line was engineered specifically for noise-sensitive, space-constrained portable applications - emphasizing low quiescent current, fixed-frequency PWM stability, and seamless multi-device synchronization without external timing components.
FAQ
What is the minimum output voltage achievable with MIC2203BMM-TR?
The MIC2203BMM-TR supports output voltages down to 0.5V using an external resistor divider connected to the FB pin. Its internal 0.5V reference voltage (±2.5%) enables precise regulation at low VOUT levels - confirmed in Electrical Characteristics table under "Feedback Voltage" parameter. This makes MIC2203BMM-TR suitable for powering modern low-voltage cores such as 0.5V–1.2V FPGA I/O banks or ASIC logic rails.
Does MIC2203BMM-TR require an external Schottky diode?
No, the MIC2203BMM-TR does not require an external Schottky diode. It integrates both high-side P-channel and low-side N-channel MOSFETs in a synchronous buck topology. During the off-cycle, the low-side N-MOSFET conducts, replacing the freewheeling diode and reducing conduction losses - a key factor enabling >95% peak efficiency and eliminating reverse recovery noise.
Can MIC2203BMM-TR be synchronized to an external clock source?
Yes, MIC2203BMM-TR supports external synchronization via the SYNC_IN pin, accepting clock signals from 0.8MHz to 1.25MHz. The SYNC_OUT pin provides a 50ns open-drain pulse synchronized to the internal oscillator, enabling reliable daisy-chaining of multiple MIC2203BMM-TR units - a documented feature used in multi-rail evaluation boards and confirmed in Functional Description and Applications Information sections.
What is the recommended input and output capacitor configuration for MIC2203BMM-TR?
The MIC2203BMM-TR requires a minimum 1µF X5R/X7R ceramic capacitor on VIN and a 2.2µF X5R ceramic capacitor on VOUT. Y5V/Z5U dielectrics are explicitly discouraged due to capacitance loss over temperature and high-frequency resistance causing instability. Total output capacitance must not exceed 3µF - all specifications validated in Application Information and Typical Application schematic.
Is MIC2203BMM-TR pin-compatible with other variants in the MIC2203 family?
Yes, MIC2203BMM-TR shares identical pinout and functionality with MIC2203YMM (Pb-free version) in the MSOP-10L package. Both variants use the same pin configuration, electrical characteristics, and thermal specifications - confirmed in Ordering Information and Pin Configuration sections. No PCB redesign is needed when migrating between these two part numbers.
MIC2203BMM-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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:
- 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
MIC2203BMM-TR FAQ
1.How can I place an order for MIC2203BMM-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2203BMM-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 MIC2203BMM-TR reliable?
The price and inventory of MIC2203BMM-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2203BMM-TR is usually 5 days.
3.What payment methods are accepted for MIC2203BMM-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2203BMM-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2203BMM-TR?
MIC2203BMM-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2203BMM-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 MIC2203BMM-TR?
For technical support, including MIC2203BMM-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2203BMM-TR requirements.
6.How does Aetrix verify that MIC2203BMM-TR is sourced from the original manufacturer or authorized distributors?
All MIC2203BMM-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 MIC2203BMM-TR meets industry standards.
7.What is the process for return or replacement of MIC2203BMM-TR?
All MIC2203BMM-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2203BMM-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 MIC2203BMM-TR part is unused and in its original packaging.
Return procedure for MIC2203BMM-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2203BMM-TR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
