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LM26003

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具有高效睡眠模式的 3A 开关稳压器

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LMQ66430 正在供货 具有 1.5µA IQ 的 36V、3A 低 EMI 同步降压转换器 Integrated input bypass capacitor and boot cap for lower EMI and smaller footprint, dual-random spread spectrum and lower IQ.

LM26003

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产品详情

Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 38 Topology Buck Type Converter Switching frequency (min) (kHz) 150 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up Control mode current mode Vout (min) (V) 1.25 Vout (max) (V) 35 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 38 Topology Buck Type Converter Switching frequency (min) (kHz) 150 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up Control mode current mode Vout (min) (V) 1.25 Vout (max) (V) 35 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • LM26003-Q1 is an Automotive-Grade Product
    That is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • High-Efficiency Sleep Mode
  • 40-µA Typical Iq in Sleep Mode
  • 10.8-µA Typical Iq in Shutdown Mode
  • 3.0-V Minimum Input Voltage
  • 4.0-V to 38-V Continuous Input Range
  • 1.5% Reference Accuracy
  • Cycle-by-Cycle Current Limit
  • Adjustable Frequency (150 kHz to 500 kHz)
  • Synchronizable to an External Clock
  • Power Good Flag
  • Forced PWM Function
  • Adjustable Soft-Start
  • 20-Pin HTSSOP Package
  • Thermal Shut Down
  • LM26003-Q1 is an Automotive-Grade Product
    That is AEC-Q100 Grade 1 Qualified (–40°C to
    +125°C Operating Junction Temperature)
  • High-Efficiency Sleep Mode
  • 40-µA Typical Iq in Sleep Mode
  • 10.8-µA Typical Iq in Shutdown Mode
  • 3.0-V Minimum Input Voltage
  • 4.0-V to 38-V Continuous Input Range
  • 1.5% Reference Accuracy
  • Cycle-by-Cycle Current Limit
  • Adjustable Frequency (150 kHz to 500 kHz)
  • Synchronizable to an External Clock
  • Power Good Flag
  • Forced PWM Function
  • Adjustable Soft-Start
  • 20-Pin HTSSOP Package
  • Thermal Shut Down

The LM26003 is a switching regulator designed for the high-efficiency requirements of applications with standby modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26003 device can deliver up to 3 A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients.

Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.

Other features include Power Good, adjustable soft-start, enable pin, input undervoltage protection, and an internal bootstrap diode for reduced component count.

The LM26003 is a switching regulator designed for the high-efficiency requirements of applications with standby modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26003 device can deliver up to 3 A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients.

Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.

Other features include Power Good, adjustable soft-start, enable pin, input undervoltage protection, and an internal bootstrap diode for reduced component count.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode 数据表 (Rev. F) PDF | HTML 2015年 2月 6日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
技术文章 Design an automotive cluster power supply PDF | HTML 2015年 10月 16日
技术文章 Spread Spectrum: Headache tablet or vitamin pill? PDF | HTML 2015年 5月 18日
EVM 用户指南 AN-1884 LM26003 Evaluation Board (Rev. B) 2013年 4月 24日

设计和开发

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评估板

LM26003EVAL — LM26003 - 具有高效休眠模式的 3A 开关稳压器评估模块

The LM26003 evaluation board is designed to demonstrate the capabilities of the LM26003 switching regulator. The LM26003 eval board can be configured to provide an output of 3.3V at up to 3A from the input range of 4V to 38V. The nominal operating frequency is 300kHz and can be synchronized from (...)

用户指南: PDF
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仿真模型

LM26003 PSpice Average Model

SNVM185.ZIP (57 KB) - PSpice Model
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仿真模型

LM26003 Unencrypted PSpice Average Model

SNVM874.ZIP (1 KB) - PSpice Model
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参考设计

PMP9458 — 参考设计 - 用于汽车仪表板的 CISPR 25 5 类 14W 额定功率多路输出电源

PMP9458 参考设计是针对汽车群集单元的传导 EMI 优化双层板电源。该电源包含 2 个级联式连接的降压稳压器：第一级可利用 LM26003 生成 5V、2A 输出；第二级可利用 LM26420 生成两种输出 2.8V、1.5A 和 1.8V、2A（最大输出功率共计 14W）。LM26003 是宽输入电压非同步降压稳压器；LM26420 是 5V 2A 输入双路高频同步降压稳压器。它们都具备汽车级版本，且通过了 AEC-Q100 1 级认证。此设计具有 6.5V 到 38V 的输入电压范围，因而适用于 12V 汽车电池系统。双层板设计包含经过优化的 PCB (...)
测试报告: PDF
原理图: PDF
参考设计

PMP9477 — 用于汽车仪表板并采用预升压的 CISPR 25 5 类额定功率多路输出电源

PMP9477 设计是针对汽车仪表盘单元的传导 EMI 优化多输出电源。此电源具有用于冷启动和启停操作的预升压级以及两个降压稳压器。预升压级采用 LM3481 升压控制器，可在输入电压降至 9.5V 时开始工作并提供 9.5V 稳压输出。它使此设计具有 4.5V 至 38V 的宽输入电压范围，因而适用于 12V 汽车电池系统。此设计在预升压后有两个降压稳压器可生成 3 个输出电压：第一级降压利用 LM26003 生成 5V、2A 输出；第二级利用 LM26420 生成两种输出 2.8V、2A 和 1.8V、2A（最大输出功率共计 15W）。LM26003 (...)
测试报告: PDF
原理图: PDF
封装 引脚 下载
HTSSOP (PWP) 20 查看选项
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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