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Microchip Technology MIC23656-HAYFT-TR
- Part No.:
- MIC23656-HAYFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 16-PowerUFQFN
- Datasheet:
-
MIC23656-HAYFT-TR.pdf
- Description:
- IC REG BUCK PROG 6A 16FTQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC23656-HAYFT-TR from Microchip Technology is a 6A peak-current, I²C-programmable synchronous step-down regulator with HyperLight Load™ architecture, 1.0V default output voltage, 10A high-side current limit, and 2.4V–5.5V input range-designed for FPGA core power in portable SSDs.
For engineers reviewing the MIC23656-HAYFT-TR datasheet, MIC23656-HAYFT-TR pinout, MIC23656-HAYFT-TR application, or MIC23656-HAYFT-TR equivalent, key selection criteria include I²C-configurable slew rate (0.42–3.42 ms/V), ±1.5% output accuracy over temperature, latch-off thermal/current protection, and 16-pin 2.5 mm × 2.5 mm FTQFN package with exposed thermal pad.
Technical Context
The MIC23656-HAYFT-TR implements Constant-ON-Time (COT) control with adaptive HyperLight Load™ mode to maintain ultra-fast transient response while achieving up to 95% efficiency at light loads. Its 8-bit DAC enables precise 5 mV-step output programming from 0.6V to 1.28V.
I²C interface (up to 3.4 MHz) supports full register access-including output voltage, slew rate, switching frequency (TON<1:0> selectable), enable delay (0.2–3 ms), and output discharge-regardless of EN pin state, enabling pre-configuration by host MCU before power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V to 5.5V - supports single-cell Li-ion battery operation with UVLO at 2.225V. |
| Output Current (Peak) | 6A pulsed - delivers burst power for FPGA/DSP core logic without external current sensing. |
| Default Output Voltage | 1.0V - safe startup level; programmable to 0.6V–1.28V in 5 mV steps via I²C. |
| High-Side Current Limit | 10A typical - configured by ILIM<1:0>=10 per ordering option HAYFT. |
| Output Voltage Accuracy | ±1.5% over line/load/temperature - ensures stable core rail under dynamic load and thermal variation. |
| Shutdown Supply Current | 1.5 µA typical - minimizes battery drain during system sleep modes. |
| Thermal Protection | Latch-off at 165°C with 22°C hysteresis - prevents thermal runaway in compact layouts. |
| I²C Speed | Up to 3.4 MHz - enables fast configuration updates during runtime without bus contention. |
Pinout & Package
Package: 16-lead 2.5 mm × 2.5 mm × 0.55 mm thin FTQFN with exposed thermal pad (EP), thermally optimized for high-power density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 (SW) | Switch Node | High-current connection to internal MOSFETs and external inductor; requires short/wide trace routing. |
| 2, 3, 13, 14, 15 (PGND) | Power Ground | Low-impedance return path for power stage; must be separated from AGND to avoid noise coupling. |
| 4, 5 (PVIN) | Main Input Supply | Connects to 2.4V–5.5V source and bulk input capacitor; powers high-side P-MOSFET. |
| 6 (SVIN) | Analog Input Supply | Provides clean bias to control circuitry; requires dedicated 1.0 µF ceramic cap to AGND. |
| 7 (SCL) | I²C Clock Input | Open-drain slave clock input; supports standard/fast/high-speed I²C modes up to 3.4 MHz. |
| 8 (SDA) | I²C Data I/O | Bidirectional open-drain data line; shares bus with other I²C peripherals. |
| 9 (EN) | Enable Control | Active-high logic input; 0.2–3 ms programmable start delay avoids inrush current surges. |
| 10 (PG) | Power Good Output | Open-drain status signal; asserts high when VOUT ≥91% of target, deasserts at ≤87% with 65 µs blanking. |
| 11 (VOUT) | Remote Sense / Discharge Path | Connects directly to output capacitor for accurate regulation; internally discharges VOUT via 10Ω when EN=LOW. |
| 12 (AGND) | Analog Ground | Reference ground for feedback and control circuits; routed separately from PGND for precision. |
| 17 (EP) | Exposed Thermal Pad | Internally tied to PGND; requires thermal vias to inner ground plane for junction temp ≤+125°C. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load™ Mode | Adaptive COT control reduces switching frequency at light loads to sustain >90% efficiency down to 1 mA. |
| I²C Programmability | Full register access enables real-time reconfiguration of VOUT, slew rate, soft-start, and fault thresholds without reset. |
| Safe Start-Up | Pre-biased output support prevents reverse current flow during hot-plug or multi-rail sequencing. |
| 100% Duty Cycle Operation | Extends usable input range near battery depletion by latching high-side FET until VOUT drops 4% below regulation. |
| Output Discharge on Disable | Internal 10Ω pull-down actively discharges VOUT when EN=LOW-ensuring known state before next power cycle. |
| Power Good Sequencing | Open-drain PG output enables cascaded power-up/down timing with other regulators via external pull-up. |
Applications
| SSD Core Power | FPGA Core Rail |
|---|---|
Use Scenario: Powers NAND controller and DRAM buffer in portable solid-state drives using single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary buck converter delivering regulated 1.0V core supply with fast load transient response to handle burst read/write operations. Use Value: 6A peak current and ±1.5% accuracy ensure stable operation across battery discharge (2.4V–4.2V), while 1.5 µA shutdown current extends standby life. | Use Scenario: Supplies configurable core voltage to Xilinx Artix-7 or Intel Cyclone V FPGA in embedded vision systems. IC Role / Device Role / Timing Role: I²C-programmable step-down regulator enabling dynamic voltage scaling (DVS) based on processing workload. Use Value: 5 mV output resolution and programmable slew rate allow precise rail tuning and controlled ramping to meet FPGA VCCINT slew requirements. |
| DSP Processor Supply | Low-Voltage ASIC Power |
Use Scenario: Provides core power to TI C6000 DSP in battery-powered audio analyzers or edge AI inference nodes. IC Role / Device Role / Timing Role: High-efficiency synchronous buck delivering 1.0V at up to 6A with ultra-fast transient response to handle FFT and filter computation bursts. Use Value: HyperLight Load™ maintains >92% efficiency at 10 mA idle current, extending runtime; latch-off thermal protection safeguards against enclosure overheating. | Use Scenario: Powers custom SoC in industrial IoT sensor hubs where space-constrained layout demands high power density. IC Role / Device Role / Timing Role: Compact 2.5 mm × 2.5 mm buck regulator with integrated MOSFETs and remote sense for accurate point-of-load regulation. Use Value: 16-pin FTQFN package with EP enables thermal management in 4-layer boards; PG output coordinates sequencing with PMIC and LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC23650YMT-T | Same pinout, 0.6V default, 3.5A high-side current limit, no I²C interface. | Lacks programmability; suited for fixed-voltage, lower-current applications without host MCU control. | Select when I²C configuration is unnecessary and cost sensitivity outweighs flexibility. |
| TPS6286418RTER | 6A, 0.8V–1.55V output, I²C interface, 1.8V–5.5V input, but 2.0 mm × 2.0 mm QFN-12 package. | Smaller footprint but fewer pins; lacks remote sense (VOUT), PG output, and latch-off thermal protection. | Choose for space-constrained designs where sequencing and robust fault handling are secondary. |
Compared with MIC23650YMT-T and TPS6286418RTER, the MIC23656-HAYFT-TR uniquely combines 10A current capability, remote sensing, open-drain PG, and latch-off protection in a thermally enhanced 2.5 mm × 2.5 mm package-making it optimal for mission-critical FPGA/ASIC core rails requiring configurability and reliability.
Availability
MIC23656-HAYFT-TR is available at Aetrix Electronics and suitable for FPGA core power, SSD controller supply, and low-voltage ASIC applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for MIC23656-HAYFT-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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on embedded control and energy-efficient solutions.
The MIC23656 belongs to Microchip's high-efficiency, I²C-programmable buck regulator product line, designed specifically for powering FPGA, DSP, and ASIC cores in battery-operated and space-constrained systems.
FAQ
What is the default output voltage of the MIC23656-HAYFT-TR at power-up?
The MIC23656-HAYFT-TR powers up with a factory-programmed default output voltage of 1.0V. This value is set by the part number suffix "HA" and is independent of I²C register contents. The output remains at 1.0V until reprogrammed via I²C, ensuring safe startup for FPGA and ASIC core rails before dynamic voltage scaling begins. The MIC23656-HAYFT-TR maintains this 1.0V default even after shutdown and restart.
Does the MIC23656-HAYFT-TR support remote voltage sensing?
Yes, the MIC23656-HAYFT-TR supports true remote voltage sensing via its dedicated VOUT pin (Pin 11). This pin connects directly to the load side of the output capacitor to compensate for PCB trace resistance and ensure ±1.5% regulation accuracy at the point of load. Additionally, the same VOUT pin provides the internal 10Ω discharge path when the device is disabled, eliminating need for external discharge circuitry. This dual function is integral to the MIC23656-HAYFT-TR design.
Can the MIC23656-HAYFT-TR operate with input voltage below 2.4V?
No, the MIC23656-HAYFT-TR has a specified minimum input voltage of 2.4V and an undervoltage lockout (UVLO) threshold of 2.225V (typical). Below this, the device disables switching and asserts PG low. It cannot regulate or sustain output below 2.4V input-even with 100% duty cycle-because internal bias generation and gate drive require sufficient headroom. The MIC23656-HAYFT-TR is not rated for sub-2.4V operation and will not function reliably in that range.
How does the MIC23656-HAYFT-TR handle short-circuit faults?
The MIC23656-HAYFT-TR implements dual-level short-circuit protection: immediate latch-off for overtemperature (165°C) and hiccup-mode current limiting for overcurrent. When high-side current exceeds the programmed 10A limit, it triggers up to 8 current-limit pulses before entering hiccup mode (1 ms off-time), then attempts automatic restart. This behavior prevents thermal damage while allowing recovery if fault clears. The MIC23656-HAYFT-TR's latch-off thermal shutdown is distinct from its current-limit hiccup response.
Is the MIC23656-HAYFT-TR pin-compatible with other members of the MIC2365x family?
Yes, the MIC23656-HAYFT-TR shares identical pinout and package (16-pin 2.5 mm × 2.5 mm FTQFN) with the MIC23650 series, enabling drop-in replacement in existing layouts. However, functional differences exist: MIC23650 lacks I²C interface and programmability, uses fixed output voltage, and has lower current limits. While mechanical compatibility is confirmed, firmware and external circuitry (e.g., I²C pull-ups, PG routing) must be validated for full interoperability with the MIC23656-HAYFT-TR.
MIC23656-HAYFT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 16-PowerUFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.28V
- Current - Output:
- 6A
- Frequency - Switching:
- 1.6MHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-FTQFN (2.5x2.5)
MIC23656-HAYFT-TR FAQ
1.How can I place an order for MIC23656-HAYFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23656-HAYFT-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 MIC23656-HAYFT-TR reliable?
The price and inventory of MIC23656-HAYFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23656-HAYFT-TR is usually 5 days.
3.What payment methods are accepted for MIC23656-HAYFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23656-HAYFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23656-HAYFT-TR?
MIC23656-HAYFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23656-HAYFT-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 MIC23656-HAYFT-TR?
For technical support, including MIC23656-HAYFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23656-HAYFT-TR requirements.
6.How does Aetrix verify that MIC23656-HAYFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23656-HAYFT-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 MIC23656-HAYFT-TR meets industry standards.
7.What is the process for return or replacement of MIC23656-HAYFT-TR?
All MIC23656-HAYFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23656-HAYFT-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 MIC23656-HAYFT-TR part is unused and in its original packaging.
Return procedure for MIC23656-HAYFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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