回到顶部

36V, 220kHz to 2.2MHz, 2A/3A Fully Integrated Step-Down Converters with 15µA Operating Current

2A/3A Automotive Synchronous Step-Down Converter with Low IQ

产品详情

The MAX20002/MAX20003 are small, synchronous buck converters with integrated high-side and low-side MOSFETs. Each device is designed to deliver up to 2A/3A with input voltages from 3.5V to 36V, while using only 15µA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signal. The devices can operate in dropout by running at 98% duty cycle, making them ideal for automotive applications.

The devices offer fixed output voltages of 5V/3.3V, along with the ability to program the output voltage between 1V to 10V. Frequency can be programmed using a resistor to ground on the FOSC pin from 220kHz to 2.2MHz. The devices offer a forced fixed-frequency mode and skip mode with ultra-low quiescent current of 15µA. They have a pin that can be programmed to turn on/off the spread spectrum, further helping systems designers with better EMC management.

The MAX20002/MAX20003 are available in a small 5mm x 5mm 20-pin TQFN package with exposed pad and use very few external components.

主要特征

  • Synchronous DC-DC Converter with Integrated FETs
    • MAX20002 = 2A
    • MAX20003 = 3A
    • 15µA Quiescent Current When in Standby Mode
  • Small Solution Size Saves Space
    • 220kHz to 2.2MHz Adjustable Frequency
    • Programmable 1V to 10V Output for the Buck or Fixed 5V/3.3V Options Available
    • Fixed 8ms Internal Soft-Start
    • Fixed Output Voltage with ±2% Output Accuracy (5V/3.3V) or Externally Resistor Adjustable (1V to 10V) with ±1% FB Accuracy
  • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing
  • Protection Features and Operating Range Ideal for Automotive Applications
    • Operating VIN Range of 3.5V to 36V
    • 42V Load-Dump Protection
    • 99% Duty-Cycle Operation with Low Dropout
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
    • Fast and Accurate Overvoltage Protection Enables Fast Recovery from Automotive Transients (MAX20002C/E and MAX20003C/E)

应用/用途

  • DC动力系统分配
  • 导航及无线电头单元
  • 分布式直流电源系统
Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3.5
VIN (V) (max) 36
VOUT1 (V) (min) 1
VOUT1 (V) (max) 10
IOUT1 (A) (max) 3
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 220
2200
Design Tools EE-Sim
Package/Pins TQFN-CU/20
Budgetary
Price (See Notes)
$2.75 @1k
查看更多

简化框图

MAX20002,MAX20003:Typical Application Circuit/Block Diagram MAX20002,MAX20003:Typical Application Circuit/Block Diagram Zoom icon

技术文档

设计与质量

单击下面的标题以查看详情页面

描述

The MAX20003 evaluation kit (EV kit) demonstrates the MAX20002/MAX20003 high-voltage, current-mode step-down converters with low operating current. The EV kit operates over a wide 3.5V to 36V input range and the output is set for 5V at 3A.

The EV kit comes with the MAX20003ATPA/V+ installed. 

查看详情

特征

  • Wide 3.5V to 36V Input Supply Range
  • Forced-PWM or Skip-Mode Operation
  • Programmable Switching Frequency
  • Power-Good Output
  • Proven PCB Layout
  • Fully Assembled and Tested

/cn/design/design-tools/ee-sim.html?

工具和模型

EE-Sim: 设计和仿真MAX20003

创建设计

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心

参量

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3.5
VIN (V) (max) 36
VOUT1 (V) (min) 1
VOUT1 (V) (max) 10
IOUT1 (A) (max) 3
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 220
2200
Design Tools EE-Sim
Package/Pins TQFN-CU/20
Budgetary
Price (See Notes)
$2.75 @1k

主要特征

  • Synchronous DC-DC Converter with Integrated FETs
    • MAX20002 = 2A
    • MAX20003 = 3A
    • 15µA Quiescent Current When in Standby Mode
  • Small Solution Size Saves Space
    • 220kHz to 2.2MHz Adjustable Frequency
    • Programmable 1V to 10V Output for the Buck or Fixed 5V/3.3V Options Available
    • Fixed 8ms Internal Soft-Start
    • Fixed Output Voltage with ±2% Output Accuracy (5V/3.3V) or Externally Resistor Adjustable (1V to 10V) with ±1% FB Accuracy
  • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing
  • Protection Features and Operating Range Ideal for Automotive Applications
    • Operating VIN Range of 3.5V to 36V
    • 42V Load-Dump Protection
    • 99% Duty-Cycle Operation with Low Dropout
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
    • Fast and Accurate Overvoltage Protection Enables Fast Recovery from Automotive Transients (MAX20002C/E and MAX20003C/E)

应用/用途

  • DC动力系统分配
  • 导航及无线电头单元
  • 分布式直流电源系统

描述

The MAX20002/MAX20003 are small, synchronous buck converters with integrated high-side and low-side MOSFETs. Each device is designed to deliver up to 2A/3A with input voltages from 3.5V to 36V, while using only 15µA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signal. The devices can operate in dropout by running at 98% duty cycle, making them ideal for automotive applications.

The devices offer fixed output voltages of 5V/3.3V, along with the ability to program the output voltage between 1V to 10V. Frequency can be programmed using a resistor to ground on the FOSC pin from 220kHz to 2.2MHz. The devices offer a forced fixed-frequency mode and skip mode with ultra-low quiescent current of 15µA. They have a pin that can be programmed to turn on/off the spread spectrum, further helping systems designers with better EMC management.

The MAX20002/MAX20003 are available in a small 5mm x 5mm 20-pin TQFN package with exposed pad and use very few external components.

简化框图

MAX20002,MAX20003:Typical Application Circuit/Block Diagram MAX20002,MAX20003:Typical Application Circuit/Block Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心