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Microchip Technology MIC23356YFT-TR
- Part No.:
- MIC23356YFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 16-PowerUFQFN
- Datasheet:
-
MIC23356YFT-TR.pdf
- Description:
- IC REG BUCK PROG 3A 16FTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
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Product details
Overview
MIC23356YFT-TR from Microchip Technology is a 3A synchronous step-down DC-DC converter with I²C programmability, operating from 2.4V to 5.5V input and delivering 0.6V–1.28V output at ±1.5% accuracy. It features HyperLight Load™ mode for >95% efficiency at light loads, ultra-fast transient response, and latch-off thermal/current protection-used in SSD power rails and FPGA core voltage regulation.
For engineers reviewing the MIC23356YFT-TR datasheet, MIC23356YFT-TR pinout, MIC23356YFT-TR application, or MIC23356YFT-TR equivalent, key selection criteria include I²C-configurable slew rate (100–3710 µs/V), 3.5A high-side current limit, 1.5 µA shutdown current, 16-pin 2.5 mm × 2.5 mm FTQFN package, and Power Good open-drain signaling for sequencing.
Technical Context
The MIC23356YFT-TR uses Constant-ON-Time (COT) control with adaptive HyperLight Load™ mode to maintain high efficiency across load ranges while enabling sub-100 ns switching ON-time adjustment (260 ns default). Its 8-bit DAC supports 5 mV output voltage resolution from 0.6V to 1.28V, and internal soft-start is programmable via SLEW_RATE[3:0] bits.
I²C interface operates up to 3.4 MHz (High-Speed mode), remains active during EN = LOW (if PVIN > UVLO), and retains register state across shutdown. Fault reporting includes overtemperature (165°C latch-off), overcurrent (8-cycle hiccup), and undervoltage lockout (2.225V threshold with 153 mV hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V–5.5V - supports single-cell Li-ion battery operation with 100% duty cycle for low-dropout mode. |
| Output Current | 3A continuous - delivered via integrated high-side (30 mΩ typ.) and low-side (16 mΩ typ.) MOSFETs. |
| Output Voltage Accuracy | ±1.5% over line/load/temperature - ensures stable core voltage for FPGAs and ASICs without external trimming. |
| I²C Resolution & Range | 5 mV steps from 0.6V–1.28V - enables precise VDDIO/VCCINT tuning for multi-rail SoC power domains. |
| Shutdown Current | 1.5 µA typical - minimizes battery drain in always-on subsystems such as SSD standby controllers. |
| Thermal Protection | Latch-off at 165°C with 22°C hysteresis - prevents thermal runaway in compact PCB layouts with limited airflow. |
| Power Good Output | Open-drain PG with 91% activation threshold and 4% hysteresis - enables reliable power sequencing with external pull-up to VIN or VOUT. |
Pinout & Package
Package: 16-lead 2.5 mm × 2.5 mm × 0.55 mm thin FTQFN with exposed thermal pad (EP), rated for -40°C to +125°C junction temperature and θJA = 45°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 (SW) | Switch Node | High-current connection to external inductor; requires short, wide trace to minimize EMI and conduction loss. |
| 2, 3, 13, 14, 15 (PGND) | Power Ground | Return path for high-side/low-side MOSFETs and input/output capacitors; must be separated from AGND to avoid noise coupling. |
| 4, 5 (PVIN) | Power Input Supply | Main input rail (2.4V–5.5V); requires local 10 µF ceramic capacitor to PGND for high-frequency decoupling. |
| 6 (SVIN) | Analog Input Supply | Bias supply for control circuitry; internally connected to PVIN via 10 Ω resistor; requires 1.0 µF ceramic capacitor to AGND. |
| 7 (SCL) | I²C Clock Input | Slave-mode clock input; supports standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes. |
| 8 (SDA) | I²C Data I/O | Open-drain bidirectional data line; requires external pull-up; address 0x5B (7-bit). |
| 9 (EN) | Enable Input | Active-high logic control; 1.2V min high-level threshold; programmable enable delay (0.25–3 ms) via CTRL1 register. |
| 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; enables internal 10 Ω discharge path when EN = LOW. |
| 12 (AGND) | Analog Ground | Reference for feedback, reference, and I²C circuits; must tie to clean ground plane near output capacitor. |
| 17 (EP) | Exposed Thermal Pad | Internally connected to PGND; requires ≥4 thermal vias to inner ground plane for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Programmable Output Voltage | 0.6V–1.28V in 5 mV steps - allows dynamic VDD scaling for FPGA partial reconfiguration or processor DVFS. |
| HyperLight Load™ Mode | Adaptive COT control reduces switching frequency at light loads - achieves >95% efficiency at 1 mA while maintaining <10 µs transient recovery. |
| Slew Rate Control | 16-step programmable rise time (100–3710 µs/V) - prevents overshoot during voltage ramp-up into pre-biased outputs. |
| Safe Start-Up with Pre-Biased Output | Internal zero-crossing detection and diode emulation - avoids reverse current flow when enabled into existing VOUT voltage. |
| Output Discharge on Disable | 10 Ω internal pull-down activated via CTRL2 register - ensures rapid, controlled discharge of output capacitance for system reset integrity. |
Applications
| FPGA Core Power | SSD Controller Rail |
|---|---|
|
Use Scenario: Powers 0.85V–1.2V core voltage of Xilinx Artix-7 or Intel Cyclone V FPGAs during configuration and runtime. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with remote sensing and I²C-adjustable output to match process-voltage corners. Use Value: ±1.5% output accuracy and 3A capability ensure stable operation across temperature and load transients during bitstream loading. |
Use Scenario: Supplies 1.2V I/O and 1.8V controller voltage in NVMe SSD modules with tight space constraints. IC Role / Device Role / Timing Role: Dual-rail power source using two MIC23356YFT-TR devices, sequenced via PG-to-EN interconnect. Use Value: 1.5 µA shutdown current extends battery-backed write-cache hold-up time; 2.5 mm × 2.5 mm footprint saves board area. |
| Portable Li-ion System Rail | Low-Power ASIC Bias |
|
Use Scenario: Generates 0.9V bias for Bluetooth LE SoCs in wearables powered by 3.7V nominal Li-ion cells. IC Role / Device Role / Timing Role: Main system PMIC buck stage with 100% duty cycle support to extend runtime as battery discharges to 2.4V. Use Value: HyperLight Load™ mode maintains >90% efficiency at 50 µA load, reducing quiescent power loss during sleep states. |
Use Scenario: Delivers 0.6V–1.0V precision supply to analog front-end blocks in medical sensor ASICs. IC Role / Device Role / Timing Role: Low-noise, high-accuracy point-of-load regulator with remote sense and programmable soft-start. Use Value: 5 mV I²C resolution enables fine-grained calibration of sensor gain stages; ±1.5% accuracy eliminates need for post-manufacture trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GQ-Z | 3A, 2.5V–5.5V input, no I²C interface; fixed or resistor-programmed output; 12-pin QFN. | Lacks digital programmability and Power Good; suited for cost-sensitive, static-voltage designs. | Select MP2143GQ-Z only if I²C control, slew rate tuning, or PG sequencing are unnecessary. |
| TPS6286418RTER | 3A, 2.7V–5.5V input, I²C-compatible but with different register map; 1.8V fixed output option; 16-pin VQFN. | Fixed 1.8V output variant; lacks 0.6V–1.28V range and 5 mV resolution; higher quiescent current (2.5 µA). | Choose TPS6286418RTER only for 1.8V systems requiring TI ecosystem compatibility and lower BOM count. |
Compared with MP2143GQ-Z and TPS6286418RTER, the MIC23356YFT-TR uniquely combines 5 mV I²C resolution across 0.6V–1.28V, 1.5 µA shutdown current, and latch-off thermal protection in a 2.5 mm × 2.5 mm footprint-making it optimal for space-constrained, dynamically configurable power rails.
Availability
MIC23356YFT-TR is available at Aetrix Electronics and suitable for FPGA core power, SSD controller rails, and portable Li-ion system rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC23356YFT-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 U.S.-based semiconductor company specializing in microcontrollers, analog, and power management ICs, with emphasis on reliability, longevity, and industrial-grade qualification.
The MIC23356YFT-TR belongs to Microchip's high-efficiency, I²C-programmable buck regulator family designed for low-voltage, high-accuracy power delivery in space-constrained computing and storage applications.
FAQ
What is the default output voltage of the MIC23356YFT-TR at power-up?
The MIC23356YFT-TR defaults to 0.6V at power-up, as specified in the Ordering Information table for the YFT variant. This safe-start voltage allows system initialization before I²C programming to higher performance levels. The device retains its last programmed output voltage across EN toggles, provided PVIN remains above UVLO.
Does the MIC23356YFT-TR support remote voltage sensing?
Yes, the MIC23356YFT-TR supports true remote sensing via the dedicated VOUT pin, which connects directly to the load-side of the output capacitor. This compensates for IR drop in PCB traces and ensures ±1.5% regulation accuracy at the point of load-critical for FPGA and ASIC core rails where voltage margin is tight.
Can the MIC23356YFT-TR operate with input voltage below 2.4V?
No-the MIC23356YFT-TR has an absolute minimum input voltage of 2.4V per its operating ratings, and undervoltage lockout triggers at 2.225V (typical). Operation below 2.4V is not functional or characterized; attempting to operate below this risks failure to regulate or undefined behavior.
How does the MIC23356YFT-TR handle short-circuit conditions?
The MIC23356YFT-TR implements latch-off current limiting: upon detecting overcurrent, it disables switching after eight fault pulses and holds shutdown until EN is cycled. This differs from hiccup mode and prevents repeated stress on MOSFETs and inductors during sustained shorts-enhancing reliability in SSD and industrial applications.
Is the MIC23356YFT-TR pin-compatible with other members of the MIC2335x family?
Yes-the MIC23356YFT-TR shares identical pinout and footprint with the MIC23350, enabling drop-in replacement in existing designs. However, register mapping and default configurations differ; firmware must be validated for full functional equivalence, especially regarding I²C address (0x5B) and CTRL register bit definitions.
MIC23356YFT-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:
- 3A
- 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)
MIC23356YFT-TR FAQ
1.How can I place an order for MIC23356YFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23356YFT-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 MIC23356YFT-TR reliable?
The price and inventory of MIC23356YFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23356YFT-TR is usually 5 days.
3.What payment methods are accepted for MIC23356YFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23356YFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23356YFT-TR?
MIC23356YFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23356YFT-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 MIC23356YFT-TR?
For technical support, including MIC23356YFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23356YFT-TR requirements.
6.How does Aetrix verify that MIC23356YFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23356YFT-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 MIC23356YFT-TR meets industry standards.
7.What is the process for return or replacement of MIC23356YFT-TR?
All MIC23356YFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23356YFT-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 MIC23356YFT-TR part is unused and in its original packaging.
Return procedure for MIC23356YFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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