ChipApex | Global Electronic Components Supplier
NCP81239AMNTXG
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC CTLR I2C CONF SWITCHING 32QFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Output Type：PWM Signal
- Function：Step-Up, Step-Down
- Output Configuration：Positive
- Topology：Buck, Boost
- Number of Outputs：1
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 28V
- Frequency - Switching：150kHz ~ 1.2MHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：No
- Clock Sync：Yes
- Serial Interfaces：I2C
- Control Features：Current Limit, Enable, Frequency Control, On Time Control, Ramp, Soft Start
- Operating Temperature：-40°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
- Grade：-
- Qualification：-
Download product information
Overview
The NCP81239AMNTXG is a USB Power Delivery 4-Switch Buck Boost Controller manufactured by onsemi. It features an I2C interface for configuration and supports a switching frequency range of 150 kHz to 1.2 MHz. The device operates with a supply voltage between 4.5 V and 28 V and includes integrated current limit, enable, frequency control, and soft-start functions. It utilizes a 32-QFN (5x5 mm) package and is rated for operation from -40°C to 100°C.
Feature Summary
- Supports buck and boost topologies with single inductor H-bridge architecture
- Enables seamless transition between buck and boost modes using dual-edge current mode control
- Integrates I2C interface for bidirectional communication with microcontrollers at various logic levels
Applications
- USB Type-C power delivery systems requiring dynamic voltage adjustment
- Quick Charge 3.0 compatible charging solutions
- Applications supporting multiple fast-charging protocols including Apple Lightning and Samsung interfaces
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'AMNTXG' matches the required tape-and-reel packaging and temperature grade. Check for obsolescence notices as some variants may be marked as not recommended for new designs. Ensure compliance with RoHS and REACH regulations relevant to your region.
Selection Notes
Select this controller when wide input and output voltage ranges are necessary for USB PD or QC applications. The I2C configurability allows precise voltage stepping without external resistors. Consider the 32-QFN package size for space-constrained designs. Verify that the target MCU supports the required I2C logic levels and communication speed for reliable control.
Part Context
This component belongs to the NCP81239 family of power management ICs designed for high-efficiency DC-DC conversion. It addresses the need for flexible voltage regulation in modern portable electronics and charging stations. The controller integrates protection features such as over-voltage, under-voltage, and over-current protection to ensure system safety during transient conditions.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official onsemi resources for cross-reference information or equivalent alternatives within the same product family.
