Overview
The NCP3135MNTXG from onsemi is a fully integrated synchronous buck converter designed for 3.3 V and 5 V step-down applications. This device is capable of providing up to 5 A of continuous output current and 6 A of instantaneous load current. It features high efficiency in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), along with a high operation frequency of 1.1 MHz. The NCP3135MNTXG supports MLCC output capacitors and has a small footprint, packaged in a 3 mm x 3 mm, 16-pin QFN package.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage Range | 2.9 - 5.5 | V |
| Output Voltage Range | 0.6 V to 0.84 x Vin | V |
| Continuous Output Current | Up to 5 A | A |
| Instantaneous Load Current | Up to 6 A | A |
| Operation Frequency | 1.1 MHz | Hz |
| Package Type | QFN-16 (3 mm x 3 mm) | |
| Junction Temperature Range | -40 to 125 | °C |
| Storage Temperature Range | -55 to 150 | °C |
Key Features
- High efficiency in both CCM and DCM modes
- High operation frequency at 1.1 MHz
- Support for MLCC output capacitors
- Small footprint in a 3 mm x 3 mm, 16-pin QFN package
- Internal 1 ms soft-start and soft-stop functionality
- Automatic power-saving mode
- Voltage mode control
- Pre-bias start-up functionality
- Output discharge operation
- Over-temperature protection
- Built-in over-voltage, under-voltage, and over-current protection
- Power good indicator
Applications
- 5 V step-down rail
- 3.3 V step-down rail
Q & A
- What is the input voltage range of the NCP3135MNTXG?
The input voltage range is from 2.9 V to 5.5 V.
- What is the maximum continuous output current of the NCP3135MNTXG?
The maximum continuous output current is up to 5 A.
- What is the operation frequency of the NCP3135MNTXG?
The operation frequency is 1.1 MHz.
- What types of protection does the NCP3135MNTXG offer?
The device offers over-voltage, under-voltage, over-current protection, and over-temperature protection.
- Does the NCP3135MNTXG support pre-bias start-up?
- What is the package type of the NCP3135MNTXG?
The package type is QFN-16 (3 mm x 3 mm).
- What are the operation modes of the NCP3135MNTXG?
The device operates in either Forced Continuous Conduction Mode (FCCM) or Automatic CCM/DCM mode.
- How does the automatic power-saving mode work in the NCP3135MNTXG?
In Automatic CCM/DCM mode, when the load current decreases, the converter enters power-saving mode, reducing switching frequency and minimizing quiescent current.
- Does the NCP3135MNTXG have a power good indicator?
- What is the typical soft-start time of the NCP3135MNTXG?
The typical soft-start time is 1 ms.
