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AC/DC & DC/DC converters (integrated FET)

LM2738

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550kHz/1.6MHz 1.5A 降压 DC-DC 开关稳压器

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LM2738

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数据表 立即订购

产品详情

Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 20 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 1600 Features Enable, Light Load Efficiency Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 18 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0019
Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 20 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 1600 Features Enable, Light Load Efficiency Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 18 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0019
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 WSON (NGQ) 8 9 mm² 3 x 3
  • Space-Saving WSON and MSOP-PowerPAD Packages
  • 3-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1.5-A Output Current
  • 550-kHz (LM2738Y) and 1.6-MHz (LM2738X) Switching Frequencies
  • 250-mΩ NMOS Switch
  • 400-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown
  • Space-Saving WSON and MSOP-PowerPAD Packages
  • 3-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1.5-A Output Current
  • 550-kHz (LM2738Y) and 1.6-MHz (LM2738X) Switching Frequencies
  • 250-mΩ NMOS Switch
  • 400-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown

The LM2738 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in an 8-pin WSON or 8-pin MSOP-PowerPAD package. It provides all the active functions for local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components, the LM2738 is easy to use. The ability to drive 1.5-A loads with an internal 250-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. Switching frequency is internally set to 550 kHz (LM2738Y) or 1.6 MHz (LM2738X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External enable is included, featuring an ultralow standby current of 400 nA. The LM2738 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce in-rush current, cycle-by-cycle current limit, thermal shutdown, and output over-voltage protection.

The LM2738 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in an 8-pin WSON or 8-pin MSOP-PowerPAD package. It provides all the active functions for local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components, the LM2738 is easy to use. The ability to drive 1.5-A loads with an internal 250-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. Switching frequency is internally set to 550 kHz (LM2738Y) or 1.6 MHz (LM2738X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External enable is included, featuring an ultralow standby current of 400 nA. The LM2738 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce in-rush current, cycle-by-cycle current limit, thermal shutdown, and output over-voltage protection.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM2738 550-kHz/1.6-MHz 1.5-A Step-Down DC-DC Switching Regulator 数据表 (Rev. C) PDF | HTML 2015年 9月 25日
用户指南 LM2738 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 2021年 12月 9日

设计和开发

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评估板

LM2738YSDEVAL — 采用节省空间的 LLP 封装的 LM2738 550kHz 1.5A 降压 DC-DC 开关稳压器 EVM

The LM2738 demo board is configured to convert 12V input to 3.3V output at 1.5A load current using the LM2738X 1.6MHz or the LM2738Y 550kHz step down DC-DC regulator. The tiny low profile eMSOP-8 and LLP-8 packages allows the demo board to be manufactured using just over one square inch of a (...)

用户指南: PDF | HTML
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HVSSOP (DGN) 8 查看选项
WSON (NGQ) 8 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

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