My Inquiry
My Account
Microchip Technology MIC2127-AYML
- Part No.:
- MIC2127-AYML
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MIC2127-AYML.pdf
- Description:
- 75V, SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:1,148
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2127-AYML from Microchip Technology is a 4.5V–75V input, synchronous buck controller with adaptive on-time control, ±1% output voltage accuracy down to 0.6V, programmable 270–800 kHz switching frequency, and Hyper Speed Control® architecture enabling ultra-fast load transient response in telecom power supplies.
For engineers reviewing the MIC2127-AYML datasheet, MIC2127-AYML pinout, MIC2127-AYML application, or MIC2127-AYML equivalent, key selection factors include its wide VIN range, internal bootstrap diode, selectable CCM/HLL light-load mode, auxiliary EXTVDD LDO for efficiency optimization, and AEC-Q100 qualification (VAO suffix variants).
Technical Context
The MIC2127-AYML implements adaptive on-time control with zero-crossing detection and negative current limit sensing, enabling stable operation across wide input/output ratios without external compensation. Its dual-mode operation-Continuous Conduction Mode (CCM) and HyperLight Load® (HLL)-is selected via the MODE pin and supports efficient light-load performance.
It integrates a 5V PVDD regulator powered from VIN or EXTVDD, an auxiliary low-voltage LDO (EXTVDD), internal soft-start (5 ms), hiccup-mode short-circuit protection, and safe start-up into prebiased outputs. The DH/DL gate drivers feature low on-resistance (RDH ≈ 2–3 Ω pull-up, RDL ≈ 0.36–0.8 Ω pull-down) and support external high- and low-side N-MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 75V - supports industrial, automotive, and telecom DC inputs including 24V, 48V, and 60V bus systems. |
| Output Voltage Accuracy | ±1% over –40°C to +125°C - ensures tight regulation for sensitive digital loads like FPGAs and ASICs. |
| Switching Frequency | 270 kHz to 800 kHz - programmable via resistor divider on FREQ pin; enables EMI optimization and inductor size trade-offs. |
| Feedback Reference | 0.6 V ±3 mV - precise internal reference enables accurate adjustable output down to 0.6V for core rail applications. |
| Junction Temperature Range | –40°C to +125°C - rated for under-hood automotive and industrial environments with full parameter guarantee. |
| Package Thermal Resistance | θJA = 50.8°C/W - 3 mm × 3 mm VQFN-16EP enables high-power density designs with minimal heatsinking. |
| Protection Features | Hiccup-mode short-circuit, thermal shutdown (150°C), UVLO (VDD rising threshold 4.2V), and PG open-drain output - ensures robust fault recovery and sequencing. |
Pinout & Package
The MIC2127-AYML is housed in a 16-pin 3 mm × 3 mm VQFN package with exposed thermal pad (EP), optimized for thermal performance in high-current buck converter designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Open-drain Power Good output | Signals regulation status (active-low); requires external pull-up; used for supply sequencing and system monitoring. |
| 2 ILIM | Current limit programming node | Connects to SW via resistor to set overcurrent threshold; enables precise MOSFET SOA protection. |
| 3 SW | Switch node connection | Return path for DH driver and current sense point for negative current limit; connects to external HS/LS MOSFET junction. |
| 4 BST | Bootstrap capacitor terminal | Supplies floating gate drive for DH; requires ≥0.1 µF ceramic cap to SW for reliable high-side turn-on. |
| 5 DH | High-side N-MOSFET gate driver | Drives external high-side FET gate; features low pull-down resistance (≤4 Ω) for fast turn-off and shoot-through prevention. |
| 6 PGND | Power ground reference | Return for DL driver and current limit comparator; must be connected to low-side MOSFET source and PVDD bypass cap. |
| 7 DL | Low-side N-MOSFET gate driver | Drives external low-side FET gate; pull-down resistance ≤0.8 Ω enables fast discharge and high efficiency at light loads. |
| 8 PVDD | Internal LDO output (5V) | Supplies both gate drivers; bypassed with ≥4.7 µF ceramic cap; sourced from VIN or EXTVDD for efficiency flexibility. |
| 9 EXTVDD | Auxiliary LDO input | Accepts 4.7–14V from converter output to power PVDD, reducing quiescent current and improving light-load efficiency. |
| 10 EN | Enable logic input | Active-high enable (VEN_H ≥1.6V); supports system-level power sequencing and standby control. |
| 11 FREQ | Switching frequency programming | Voltage divider from VIN to AGND sets fSW; tie to VIN for 800 kHz maximum frequency. |
| 12 MODE | Light-load mode select | Logic-high selects CCM; logic-low selects HLL mode for improved efficiency below ~10% load. |
| 13 FB | Feedback input | Compares output voltage (via resistive divider) against 0.6V reference; determines regulation setpoint. |
| 14 AGND | Analog ground reference | Reference for FB, EN, MODE, FREQ, ILIM; must be separated from PGND and tied at single point for noise immunity. |
| 15 VDD | Analog circuit supply | Internal 5V supply for control logic; UVLO threshold 4.2V ensures stable operation during brownout conditions. |
| 16 VIN | High-voltage LDO input | Primary supply for internal regulators; accepts full 4.5–75V input range; powers PVDD when EXTVDD is not used. |
Key Features
| Feature | Design Value |
|---|---|
| Hyper Speed Control® Architecture | Enables stable operation with any output capacitor type and ultra-fast load transient response (<10 µs recovery), eliminating need for complex compensation networks. |
| Adjustable Light-Load Mode | MODE pin selects between CCM (high efficiency at medium loads) and HyperLight Load® (HLL) mode (reduced switching losses at <10% load). |
| Auxiliary Bootstrap LDO (EXTVDD) | Allows PVDD to be powered from converter output (4.7–14V), cutting quiescent current by >50% and boosting light-load efficiency up to 5 percentage points. |
| Safe Prebiased Start-Up | Supports monotonic start-up into precharged output rails - critical for hot-swap and redundant power systems where VOUT may be non-zero at enable. |
| Integrated Protection Suite | Includes hiccup-mode short-circuit response, thermal shutdown (150°C), UVLO with hysteresis, and internal soft-start (5 ms) - reduces external component count and improves system reliability. |
| Single-Supply Operation | Built-in 5V regulator (PVDD) and logic-level EN/PG interfaces eliminate need for external bias supplies - simplifies board layout and BOM. |
Applications
| Telecom Base Station Power | Industrial Distributed Power |
|---|---|
Use Scenario: 48V intermediate bus conversion to 3.3V/1.2V rails for FPGA, DSP, and memory subsystems in macrocell and small-cell base stations. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing high-efficiency, high-reliability DC-DC conversion with strict thermal and EMI constraints. Use Value: Adaptive on-time control delivers <10 µs load transient recovery and ±1% output accuracy across temperature, ensuring signal integrity in RF front-end circuits. | Use Scenario: Wide-input (24–72V) DC power distribution in factory automation controllers, PLCs, and motor drives requiring multiple isolated/non-isolated rails. IC Role / Device Role / Timing Role: High-voltage buck controller enabling compact, thermally efficient point-of-load regulation without external gate drivers or compensation components. Use Value: 75V max VIN rating and –40°C to +125°C guaranteed operation allow direct integration onto main power boards in harsh industrial enclosures. |
| Automotive ADAS Power Supply | Networking Equipment PSU |
Use Scenario: Powering camera modules, radar processors, and sensor fusion units in AEC-Q100-compliant advanced driver-assistance systems (ADAS). IC Role / Device Role / Timing Role: Synchronous buck controller delivering regulated 1.8V/1.2V core voltages with built-in safety mechanisms for functional safety-critical subsystems. Use Value: AEC-Q100 qualification (VAO suffix), hiccup-mode fault handling, and prebias start-up ensure compliance with ISO 26262 ASIL-B requirements for power management. | Use Scenario: Mid-rail generation (e.g., 12V → 5V/3.3V) in enterprise switches, routers, and optical line terminals operating from 48V telecom rectifiers. IC Role / Device Role / Timing Role: High-frequency (up to 800 kHz), high-efficiency buck controller supporting dense PCB layouts and dynamic load demands of packet-processing ASICs. Use Value: Programmable fSW and HLL mode reduce audible noise and improve efficiency at partial load - critical for fanless, energy-efficient networking hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5116PWPR | Wider 6–100V input; no integrated EXTVDD LDO; requires external compensation; lower max fSW (750 kHz). | Preferred for ultra-high-VIN (>75V) industrial applications; lacks HLL mode and prebias start-up. | Select LM5116PWPR only if input exceeds 75V or if external compensation is required for specific loop stability needs. |
| MP2482DS-LF-Z | Fixed 500 kHz fSW; 4.5–60V input; no MODE pin or HLL mode; smaller 8-pin SOIC package; no EXTVDD input. | Suitable for cost-sensitive, space-constrained designs where light-load efficiency is secondary to BOM simplicity. | Choose MP2482DS-LF-Z for fixed-frequency, lower-complexity applications without need for programmable fSW or multi-mode operation. |
Compared with LM5116PWPR and MP2482DS-LF-Z, the MIC2127-AYML uniquely combines 75V max VIN, programmable 270–800 kHz fSW, HyperLight Load® mode, EXTVDD efficiency boost, and safe prebias start-up - making it optimal for high-performance, thermally constrained telecom and automotive power systems.
Availability
MIC2127-AYML is available at Aetrix Electronics and suitable for telecom base station power, industrial distributed power, and automotive ADAS power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant variants.
Supply support for MIC2127-AYML 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
Microchip Technology is a leading provider of microcontrollers, analog devices, and power management ICs, serving automotive, industrial, communications, and computing markets with high-reliability semiconductor solutions.
The MIC2127-AYML belongs to Microchip's high-voltage synchronous buck controller product line, designed specifically for efficient, wide-input DC-DC conversion in telecom infrastructure, industrial automation, and automotive electronics.
FAQ
What is the maximum input voltage supported by the MIC2127-AYML?
The MIC2127-AYML supports a maximum input voltage of 75V, with absolute maximum rating up to 76V. This allows direct operation from standard 48V telecom buses, 60V industrial supplies, and 72V battery systems while maintaining guaranteed operation across –40°C to +125°C junction temperature.
Does the MIC2127-AYML require external compensation components?
No, the MIC2127-AYML uses adaptive on-time control architecture and includes internal compensation, eliminating the need for external Type II or Type III compensation networks. This simplifies design, reduces component count, and improves robustness across varying input/output conditions and capacitor types.
How does the EXTVDD pin improve system efficiency in the MIC2127-AYML?
The EXTVDD pin allows the MIC2127-AYML's internal PVDD regulator to be powered from the converter's output rail (4.7–14V), reducing quiescent current draw from the high-voltage input. This lowers no-load power consumption by >50% and boosts light-load efficiency - especially valuable in always-on telecom and networking equipment.
Can the MIC2127-AYML start up safely when the output is already precharged?
Yes, the MIC2127-AYML supports safe monotonic start-up into a prebiased output. This capability prevents reverse current flow and potential damage during hot-swap events or redundant power supply transitions - a key requirement in carrier-grade telecom and server power systems.
What package type is used for the MIC2127-AYML, and what are its thermal characteristics?
The MIC2127-AYML is packaged in a 16-pin 3 mm × 3 mm VQFN with exposed thermal pad (EP). Its thermal resistance is θJA = 50.8°C/W and θJC = 25.3°C/W, enabling high-power-density designs with effective heat dissipation through the EP to the PCB thermal plane.
MIC2127-AYML Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Hyper Speed Control®
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 75V
- Frequency - Switching:
- 200kHz ~ 800kHz
- Duty Cycle (Max):
- 85%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MIC2127-AYML FAQ
1.How can I place an order for MIC2127-AYML through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2127-AYML 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 MIC2127-AYML reliable?
The price and inventory of MIC2127-AYML are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2127-AYML is usually 5 days.
3.What payment methods are accepted for MIC2127-AYML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2127-AYML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2127-AYML?
MIC2127-AYML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2127-AYML 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 MIC2127-AYML?
For technical support, including MIC2127-AYML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2127-AYML requirements.
6.How does Aetrix verify that MIC2127-AYML is sourced from the original manufacturer or authorized distributors?
All MIC2127-AYML 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 MIC2127-AYML meets industry standards.
7.What is the process for return or replacement of MIC2127-AYML?
All MIC2127-AYML units undergo pre-shipment inspection (PSI). If there is an issue with MIC2127-AYML, 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 MIC2127-AYML part is unused and in its original packaging.
Return procedure for MIC2127-AYML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2127-AYML Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
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…
