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Microchip Technology MIC2141YM5-TR
- Part No.:
- MIC2141YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC2141YM5-TR.pdf
- Description:
- IC REG BOOST FLYBACK ADJ SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,685
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Product details
Overview
MIC2141YM5-TR from Micrel Inc. is a micropower boost switching regulator IC designed for space-constrained portable systems. It operates from 2.5V–14V input, delivers dynamically adjustable 4.8V–22V output via VC pin control (gain = 6), and features fixed 330kHz switching with 18% duty cycle. Its 70µA quiescent current and SOT-23-5 package make it ideal for LCD bias and CCD camera power supplies.
For engineers reviewing the MIC2141YM5-TR datasheet, MIC2141YM5-TR pinout, MIC2141YM5-TR application, or MIC2141YM5-TR equivalent, key selection criteria include its gated-oscillator architecture, 22V switch voltage rating, 1.24V internal bandgap reference, <2µA shutdown current, and compatibility with low-cost external components (single inductor, diode, capacitor).
Technical Context
The MIC2141YM5-TR employs a hysteretic comparator-based regulation scheme where the VC control input directly sets output voltage at 6×VC, with ±10mV comparator hysteresis translating to ±60mV output ripple. Regulation occurs by gating a fixed-frequency 330kHz oscillator based on feedback comparison between FB and VC.
Its internal N-channel MOSFET switch supports up to 22V drain voltage and exhibits 4Ω on-resistance at VIN = 3.6V. The device operates in discontinuous conduction mode (DCM) across most input/output combinations, with DCM/CCM boundary defined by VIN(ccm) = VOUT + VFWD + (1 – D), enabling predictable peak-current behavior for inductor sizing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 14V - supports single Li-ion (2.7–4.2V), 3–4 NiMH cells, or regulated 5V/12V rails. |
| Output Voltage Range | 4.8V to 22V - programmable via 0.8V–3.6V analog VC input with 6× gain; max limited by 22V SW node rating. |
| Switching Frequency | 330kHz (±10%) - fixed frequency enables predictable EMI filtering and compact magnetics selection. |
| Quiescent Current | 70µA - enables multi-week battery life in always-on portable bias applications. |
| Shutdown Current | <2µA - allows full system power-down without leakage path through regulator. |
| Switch On Resistance | 4Ω @ VIN = 3.6V - determines conduction loss and thermal rise at 100mA peak switch current. |
| Bandgap Reference | 1.24V - internal precision reference used in FB/VC comparator; ensures stable gain calibration. |
Pinout & Package
Package: 5-pin SOT-23 (JEDEC MO-178AA), 2.9mm × 1.6mm × 1.1mm, surface-mount, lead-free (Pb-free) compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Power Input | Supplies internal circuitry; accepts 2.5V–14V; must exceed VC + 0.2V per datasheet constraint. |
| 2 - GND | Ground Reference | Common return for internal logic, gate drive, and MOSFET source; requires low-impedance PCB connection. |
| 3 - SW | Switch Node | Drain of internal N-MOSFET; connects to inductor and flyback/flywheel diode; rated to 22V max. |
| 4 - FB | Feedback Sense | Internally divided output sense node; compared against VC to regulate output; no external resistor needed. |
| 5 - VC | Voltage Control Input | Analog programming pin; 0.8V–3.6V input yields 4.8V–22V output (6× gain); open-circuit defaults to VIN – 0.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Gated-oscillator topology | Enables ultra-low quiescent current (70µA) while maintaining fixed 330kHz switching for predictable filter design. |
| VC-controlled output | Eliminates external feedback resistors; allows real-time analog adjustment of output voltage from microcontroller DAC or potentiometer. |
| Integrated 22V MOSFET switch | Reduces BOM count to only three external parts (inductor, diode, capacitor); avoids discrete switch layout complexity and parasitics. |
| Hysteretic regulation | Provides inherent line/load transient response without compensation network; ripple magnitude directly tied to 10mV comparator hysteresis. |
| SOT-23-5 footprint | Enables placement in tight spaces typical of handheld LCD modules and digital camera sensor boards. |
Applications
| LCD Bias Supply | CCD Digital Camera Supply |
|---|---|
Use Scenario: Generating high-voltage bias (e.g., 15V–20V) for TFT-LCD gate drivers and source drivers from a single 3.3V or 3.7V battery rail. IC Role / Device Role / Timing Role: Primary DC-DC boost converter providing dynamically adjustable, low-noise high-voltage rail with minimal external components. Use Value: Enables >85% efficiency at 1–5mA load while occupying <3mm² PCB area; VC pin allows brightness-dependent voltage scaling to reduce power consumption. | Use Scenario: Powering CCD image sensor analog front-end requiring precise, low-ripple 12V–15V supply during exposure cycles in battery-powered digital cameras. IC Role / Device Role / Timing Role: Micropower boost regulator delivering stable output during intermittent high-current sensor readout bursts. Use Value: 70µA quiescent current extends standby time; 330kHz switching permits small ceramic output capacitors (<10µF) minimizing board space and cost. |
| Portable Medical Sensor Bias | Low-Power Industrial Sensor Interface |
Use Scenario: Providing isolated analog bias voltage (e.g., 10V) for MEMS pressure or temperature sensor signal conditioning circuits in handheld diagnostic tools. IC Role / Device Role / Timing Role: Compact, low-quiescent boost stage enabling long-life coin-cell or AAA operation without compromising sensor accuracy. Use Value: <2µA shutdown current allows complete system sleep; VC pin enables firmware-controlled bias tuning for sensor calibration sequences. | Use Scenario: Supplying 5V–9V auxiliary rail for low-power RS-485 transceivers or analog sensor signal chains in battery-backed industrial monitoring nodes. IC Role / Device Role / Timing Role: Efficient step-up converter bridging gap between 3.3V MCU domain and higher-voltage interface requirements. Use Value: Fixed 330kHz frequency simplifies EMI compliance; SOT-23-5 package integrates seamlessly into dense IoT node layouts without thermal derating concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1722YETA+ | 2.5V–5.5V input range; 2MHz switching; 1.9µA quiescent current; no VC control - uses resistor feedback. | Optimized for ultra-low IQ in sub-5V systems; lacks analog voltage programming; smaller solution size but lower max output voltage (5.5V). | Select when lowest possible IQ and smallest inductor are critical, and output voltage is fixed or digitally controlled. |
| TPS61099YFFR | 0.7V–5.5V input; 1.2µA IQ; 1.2MHz switching; integrated 500mA switch; no VC pin - uses resistor divider or I²C. | Supports single-cell alkaline/Zn-air start-up; higher output current capability; no analog VC interface; requires external feedback resistors. | Select for wider input range down to 0.7V and higher load current (>10mA), accepting trade-off of fixed output or digital control only. |
Compared with MAX1722YETA+ and TPS61099YFFR, the MIC2141YM5-TR uniquely provides analog VC-based dynamic output adjustment without external resistors, supports up to 22V output, and maintains high efficiency across 2.5V–14V inputs - making it optimal for LCD/CCD bias where voltage scalability and high-VOUT are essential.
Availability
MIC2141YM5-TR is available at Aetrix Electronics and suitable for LCD bias supply, CCD digital camera supply, portable medical sensor bias, and low-power industrial sensor interface applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MIC2141YM5-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 MIC2141 product line was engineered specifically for micropower, dynamically adjustable boost conversion in space-constrained battery-powered equipment - emphasizing ultra-low IQ, minimal external component count, and analog programmability over digital interfaces.
FAQ
What is the maximum output voltage achievable with the MIC2141YM5-TR?
The MIC2141YM5-TR supports a maximum output voltage of 22V, constrained by its internal MOSFET's 22V drain-source voltage rating. This limit is enforced by the absolute maximum switch voltage (VSW) specification. Attempting to exceed 22V risks device failure. Output voltage is set by the VC input (VOUT = 6 × VC), so applying 3.6V to VC yields 21.6V - staying safely within limits. Higher voltages require external flyback configurations, not supported by the MIC2141YM5-TR's internal architecture.
Does the MIC2141YM5-TR require external feedback resistors?
No, the MIC2141YM5-TR does not require external feedback resistors. Its FB pin is internally connected to a precision resistive divider referenced to the output, and regulation is performed by comparing this divided voltage against the VC control input. This eliminates resistor tolerance errors and saves board space. If VC is left unconnected, the device defaults to VOUT ≈ VIN – 0.5V - still requiring no external resistors.
Can the MIC2141YM5-TR operate from a single alkaline cell?
No, the MIC2141YM5-TR cannot reliably operate from a single alkaline cell. Its minimum operating input voltage is 2.5V, while a fresh alkaline cell starts at ~1.6V and drops rapidly under load. Even two alkaline cells (3.2V initial) fall below 2.5V quickly. The device is optimized for 3–4 NiMH cells (3.6V–4.8V), single Li-ion (2.7V–4.2V), or regulated 3.3V/5V rails - all of which maintain ≥2.5V across their discharge curves.
What is the purpose of the 10mV comparator hysteresis in the MIC2141YM5-TR?
The 10mV comparator hysteresis in the MIC2141YM5-TR defines the regulation window for the hysteretic control loop: the output is held high until FB exceeds VC by 10mV, then held low until FB falls 10mV below VC. This creates low-frequency ripple of ±60mV (6× hysteresis) on the output, eliminating need for external compensation. It ensures stable, self-clocking operation without phase-margin concerns - critical for micropower designs where complex feedback networks would increase IQ.
Is the MIC2141YM5-TR pin-compatible with the MIC2141BM5?
Yes, the MIC2141YM5-TR is pin-compatible with the MIC2141BM5. Both variants use identical 5-pin SOT-23 (MO-178AA) packages and share identical pinout (IN, GND, SW, FB, VC), electrical specifications, and functional behavior. The difference lies solely in marking (SAAA vs. SAAA) and Pb-free compliance - the YM5 is the lead-free version, while BM5 is standard. No PCB layout changes are required when substituting MIC2141YM5-TR for MIC2141BM5.
MIC2141YM5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 14V
- Voltage - Output (Min/Fixed):
- 4.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 10mA
- Frequency - Switching:
- 330kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC2141YM5-TR FAQ
1.How can I place an order for MIC2141YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2141YM5-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 MIC2141YM5-TR reliable?
The price and inventory of MIC2141YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2141YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC2141YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2141YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2141YM5-TR?
MIC2141YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2141YM5-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 MIC2141YM5-TR?
For technical support, including MIC2141YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2141YM5-TR requirements.
6.How does Aetrix verify that MIC2141YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC2141YM5-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 MIC2141YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC2141YM5-TR?
All MIC2141YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2141YM5-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 MIC2141YM5-TR part is unused and in its original packaging.
Return procedure for MIC2141YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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