Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MIC23356

3A Buck Regulator with HyperLight Load® & I2C

Status: In Production

Features:

  • 3A Continuous Output Current
  • Multiple Faults Indication through I2C
  • High Efficiency (up to 95%)
  • Ultra-Fast Transient Response
  • ±1.5% Output Voltage Accuracy Over Line/Load/Temperature Range
  • Low Dropout (100% Duty Cycle) Operation
View More
Overview
Documents
Development Environment
RoHS Information
Buy Now

Device Overview

Summary

The MIC23656 is a high-efficiency, low-voltage input, 3A peak current synchronous step-down regulator. The Constant-ON-Time (COT) control architecture with HyperLight Load™ provides very high efficiency at light loads, while still having ultra-fast transient response.

The I2C interface allows programming the output voltage between 0.6V and 1.28V, with 5 mV resolution or between 0.6V and 3.84V, with 10 mV and 20 mV resolution. Three different default voltage options (0.6V, 0.9V and 1.0V) are provided so that the application can be started with a safe voltage level and then moved to high performance modes under I2C control.

An open-drain Power Good output facilitates output voltage monitoring and sequencing. If set in shutdown (EN = GND), the MIC23656 typically draws 1.5 µA, while the output is discharged through 10W pull-down (if the output discharge feature is enabled).

The MIC23356 pinout is compatible with the MIC23350, so that applications can be easily converted.

The 2.4V to 5.5V input voltage range, low shutdown and quiescent currents make the MIC23356 ideal for single-cell Li-Ion battery-powered applications. The 100% duty cycle capability provides low dropout operation, extending operating range in portable systems.

The MIC23356 is available in a thermally efficient, 16-Lead 2.5 mm x 2.5 mm x 0.55 mm thin FTQFN package, with an operating junction temperature range from -40°C to +125°C

Additional Features
  • Input Voltage Range: 2.4V to 5.5V
  • 3A Continuous Output Current
  • Multiple Faults Indication through I2C
  • High Efficiency (up to 95%)
  • Ultra-Fast Transient Response
  • ±1.5% Output Voltage Accuracy Over Line/Load/Temperature Range
  • Safe Start-Up with Pre-Biased Output
  • Typical 1.5 µA Shutdown Supply Current
  • Low Dropout (100% Duty Cycle) Operation
  • I2C Speed up to 3.4 MHz
  • Latch-Off Thermal Shutdown Protection
  • Latch-Off Current Limit Protection
  • Power-Good (PG) Open-Drain Output
  • I2C Programmable:
    • Output Voltage: 0.6V - 1.28V, 5 mV Resolution or 0.6V - 3.84V, 10/20 mV Resolution
    • Slew Rate: 0.2 ms/V - 3.2 ms/V
    • ON time (Switching Frequency)
    • High Side Current Limit: 3.5A - 5A
    • Enable Delay: 0.2 ms - 3 ms
    • Output Discharge when Disabled (EN = GND)
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.4
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.6
Output Voltage Range Max (V)
3.84
Output Current (mA) max
3000
Quiescent Current (mA) typ
.060
Switching Frequency (kHz)
600 to 2800
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.6
Duty Cycle Max (%)
100
SHUTDOWN Current (µA) (Typ)
1.5
Light Load Efficiency Mode
Yes

Documents

Jump to:

Software Libraries/Firmware

05/15/2019
2421KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC23356 3A Synch Buck Regulator Eval Bd
MIC23356 3A Synch Buck Regulator Eval Bd ( ADM00881 )

The MIC23356 Evaluation Board is developed to evaluate and demonstrate Microchip Technology’s MIC23356 product. The board features the MIC23356 in a typical Buck application supplied from an external source, between 2.4V – 5.5V. The onboard MCP2221 USB bridge and Micro-USB interface allows easy parameter configuration and monitoring directly from a PC. Test connectors allow probing,...

Learn More
Add To Cart

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC23356YFT-TR
0.000000
16
UQFN
2.5x2.5x0.6mm
Matte Tin
e3
MIC23356-FAYFT-TR
0.000000
16
UQFN
2.5x2.5x0.6mm
Matte Tin
e3
MIC23356-HAYFT-TR
0.000000
16
UQFN
2.5x2.5x0.6mm
Matte Tin
e3
MIC23356-SAYFT-TR
0.000000
16
UQFN
2.5x2.5x0.6mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy