NCP3235MNTXG
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onsemi NCP3235MNTXG

Manufacturer No:
NCP3235MNTXG
Manufacturer:
onsemi
Package:
Tape & Reel (TR)
Description:
IC REG BUCK ADJUSTABLE 15A 40QFN
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The NCP3235MNTXG, produced by onsemi, is a high-current, high-efficiency voltage-mode synchronous buck converter. It operates from an input voltage range of 4.5 V to 23 V and can generate output voltages as low as 0.6 V with a continuous current of up to 15 A. This converter is designed to offer high efficiency and robust protection features, making it suitable for a variety of power management applications.

Key Specifications

Parameter Value Unit
Input Voltage Range 4.5 - 23 V
Output Voltage Range 0.6 - 21 V
Maximum Output Current 15 A
Switching Frequency Options 550 kHz, 1.1 MHz -
Package Type QFN-40 (6x6 mm) -
Operating Ambient Temperature Range -40 to +85 °C
Operating Junction Temperature Range -40 to +125 °C
Maximum Junction Temperature +150 °C
High-side On Resistance (RDSONH) 6.5 - 10
Low-side On Resistance (RDSONL) 2.9 - 5.2

Key Features

  • Wide Input Voltage Range: Operates from 4.5 V to 23 V.
  • High Efficiency: Achieves high efficiency at both heavy and light loads.
  • Automatic CCM/DCM Mode: Smoothly switches between continuous conduction mode (CCM) and discontinuous conduction mode (DCM) to optimize efficiency.
  • External Programmable Soft-Start: Allows for adjustable startup times using an external capacitor.
  • Lossless Low-side FET Current Sensing: Enhances overcurrent protection accuracy.
  • Protection Features: Includes output over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown.
  • Selective Hiccup/Latch Off Operation: For all faults, providing flexible fault handling.
  • Power Good Indicator: Monitors the output voltage and signals when it is out of regulation or during fault conditions.

Applications

The NCP3235MNTXG is suitable for various high-current power management applications, including:

  • Server and data center power supplies
  • Telecommunication equipment
  • Industrial power systems
  • High-performance computing systems
  • Automotive and aerospace power management

Q & A

  1. What is the input voltage range of the NCP3235MNTXG?

    The input voltage range is from 4.5 V to 23 V.

  2. What is the maximum output current of the NCP3235MNTXG?

    The maximum output current is up to 15 A.

  3. What are the switching frequency options for the NCP3235MNTXG?

    The switching frequency options are 550 kHz and 1.1 MHz.

  4. What type of package does the NCP3235MNTXG come in?

    The NCP3235MNTXG comes in a QFN-40 (6x6 mm) package.

  5. What protection features does the NCP3235MNTXG offer?

    The NCP3235MNTXG offers output over-voltage protection (OVP), under-voltage protection (UVP), overcurrent protection (OCP), and thermal shutdown.

  6. How does the automatic CCM/DCM mode work?

    The automatic CCM/DCM mode allows the converter to switch smoothly between continuous conduction mode (CCM) and discontinuous conduction mode (DCM) to optimize efficiency at different load conditions.

  7. What is the purpose of the power good indicator?

    The power good indicator monitors the output voltage and signals when it is out of regulation or during fault conditions.

  8. How is the soft-start period programmed?

    The soft-start period is programmed using an external capacitor connected from the SS pin to ground.

  9. What happens during thermal shutdown?

    During thermal shutdown, both the high-side and low-side MOSFETs are turned off, and the device initiates a soft-start once the temperature drops below the hysteresis threshold.

  10. How does the overcurrent protection work?

    The overcurrent protection senses the peak freewheeling current in the low-side FET and compares it against a user-selected resistor and an internal temperature-compensated current source.

Product Attributes

Function:Step-Down
Output Configuration:Positive
Topology:Buck
Output Type:Adjustable
Number of Outputs:1
Voltage - Input (Min):4.5V
Voltage - Input (Max):21V
Voltage - Output (Min/Fixed):0.6V
Voltage - Output (Max):- 
Current - Output:15A
Frequency - Switching:- 
Synchronous Rectifier:Yes
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:40-VFQFN Exposed Pad
Supplier Device Package:40-QFN (6x6)
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In Stock

$2.86
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Similar Products

Part Number NCP3235MNTXG NCP3135MNTXG NCP3230MNTXG NCP3231MNTXG NCP3233MNTXG
Manufacturer onsemi onsemi onsemi onsemi onsemi
Product Status Last Time Buy Active Active Obsolete Obsolete
Function Step-Down Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive Positive
Topology Buck Buck Buck Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1 1
Voltage - Input (Min) 4.5V 2.9V 4.5V 4.5V 3V
Voltage - Input (Max) 21V 5.5V 18V 18V 21V
Voltage - Output (Min/Fixed) 0.6V 0.6V 0.6V 0.6V 0.6V
Voltage - Output (Max) - 4.62V 5.4V 16.56V 19.32V
Current - Output 15A 5A 30A 25A 20A
Frequency - Switching - - 500kHz 500kHz 500kHz
Synchronous Rectifier Yes Yes Yes Yes Yes
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 90°C (TA) -40°C ~ 85°C (TA) -40°C ~ 90°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 40-VFQFN Exposed Pad 16-VFQFN Exposed Pad 40-VFQFN Exposed Pad 40-VFQFN Exposed Pad 40-VFQFN Exposed Pad
Supplier Device Package 40-QFN (6x6) 16-QFN (3x3) 40-QFN (6x6) 40-QFN (6x6) 40-QFN (6x6)

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