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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

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 38 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1.25 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 38 Vin (min) (V) 3 Vout (max) (V) 35 Vout (min) (V) 1.25 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • 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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顶层文档 类型 标题 格式选项 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 2015-2-6
选择指南 电源管理指南 2018 2018-7-31
技术文章 Design an automotive cluster power supply PDF | HTML 2015-10-16
技术文章 Spread Spectrum: Headache tablet or vitamin pill? PDF | HTML 2015-5-18

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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 (...)

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仿真模型

LM26003 PSpice Average Model

SNVM185.ZIP (57 KB) - PSpice 模型
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仿真模型

LM26003 Unencrypted PSpice Average Model

SNVM874.ZIP (1 KB) - PSpice 模型
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HTSSOP (PWP) 20 Ultra Librarian
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