— IC芯片 | 连接器 | 传感器 | 被动器件 —
Product Detailed Parameters
- Description:I2C CONFIGURABLE, 4-SWITCH BUCK
- Series:-
- Mfr:onsemi
- Package:Tape & Reel (TR),Cut Tape (CT)
- Output Type:Transistor Driver
- Function:Step-Up/Step-Down
- Output Configuration:Positive
- Topology:Buck, Boost
- Number of Outputs:4
- Output Phases:2
- Voltage - Supply (Vcc/Vdd):4.5V ~ 28V
- Frequency - Switching:150kHz ~ 1.2MHz
- Duty Cycle (Max):-
- Synchronous Rectifier:Yes
- Clock Sync:-
- Serial Interfaces:I2C
- Control Features:Current Limit, Enable, Frequency Control, Power Good, Ramp, Soft Start, Tracking
- Operating Temperature:-40°C ~ 125°C (TA)
- Mounting Type:Surface Mount
- Package / Case:32-VFQFN Exposed Pad
- Supplier Device Package:32-QFN (5x5)
- Grade:-
- Qualification:-
Download product information
Overview
The NCP81599MNTXG is an I2C-configurable, four-switch buck-boost DC-DC switching controller manufactured by onsemi. It features a synchronous rectifier topology with four independent outputs and operates within an input voltage range of 4.5V to 28V. The device supports adjustable switching frequencies between 150kHz and 1.2MHz. It integrates comprehensive control characteristics including current limiting, enable, frequency control, power good indication, slope compensation, soft start, and tracking. Designed for industrial applications, it functions reliably across a temperature range of -40°C to 125°C.
Feature Summary
- I2C configurable interface for dynamic parameter adjustment
- Synchronous buck-boost topology with four output channels
- Integrated protection and control features including soft start and tracking
Applications
- Industrial power supply systems requiring flexible voltage regulation
- Battery-powered equipment needing efficient buck-boost conversion
- Embedded systems utilizing I2C programmable power management
Procurement Notes
Verify the complete part number NCP81599MNTXG against official onsemi documentation to ensure correct suffix identification. Confirm RoHS3 compliance and REACH status prior to integration. Check for recent Product Change Notifications (PCN) regarding manufacturing site or material updates. Ensure compatibility with system I2C bus requirements and thermal design constraints for the 32-QFN package.
Selection Notes
Select this component when a single IC solution is required for multi-rail buck-boost applications with digital configuration needs. It is suitable for designs demanding high efficiency through synchronous rectification and precise output tracking. Consider the 32-QFN package dimensions and thermal performance for PCB layout optimization in space-constrained industrial enclosures.
Part Context
This device belongs to the NCP81599 series of power management integrated circuits from onsemi. It is specifically engineered as a versatile switching controller for complex power architectures. The part is distinct from simpler buck-only regulators due to its ability to handle both step-up and step-down operations while maintaining multiple synchronized outputs under digital control.
Replacement Considerations
Consult official cross-reference data for verified substitutes. Generic family members may lack specific I2C configurability or the exact four-switch buck-boost topology.
ChipApex | Global Electronic Components Supplier







