The LM2734x and LM2734x-Q1 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin WSON and 10-pin MSOP-PowerPAD packages. They contain all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components, the LM2734x and LM2734x-Q1 are easy to use. The ability to drive 1.5-A or 2-A loads respectively, with an internal 150-mΩ NMOS switch results in the best power density available. The world-class control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included, which features an ultra-low shutdown current of 70 nA. The LM2734x and LM2734x-Q1 use peak 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 inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

• Space-Saving, 3 mm × 3 mm 10-Pin WSON and MSOP-PowerPAD Packages
• Wide Input Voltage Range: 3 V to 20 V
• Wide Output Voltage Range: 1 V to 18 V
• LM27341 Delivers 1.5-A Maximum Output Current
• LM27342 Delivers 2-A Maximum Output Current
• High Switching Frequency: 2 MHz
• Frequency Synchronization: 1 MHz < fSW < 2.35 MHz
• 150-mΩ NMOS Switch With Internal Bootstrap Supply
• 70-nA Shutdown Current
• Internal Voltage Reference Accuracy of 1%
• Peak Current-Mode, PWM Operation
• Thermal Shutdown
• LM27341-Q1 and LM27342-Q1 are AEC-Q100 Grade 1 Qualified and Manufactured on an Automotive Grade Flow

• Vin (Min) (V)
• 3
• Vin (Max) (V)
• 20
• Vout (Min) (V)
• 1
• Vout (Max) (V)
• 18
• Iout (Max) (A)
• 1.5
• Iq (Typ) (uA)
• 2400
• Switching frequency (Min) (kHz)
• 1750
• Switching frequency (Max) (kHz)
• 2300
• Features
• Enable, Light Load Efficiency
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 93

LM27341的完整型号有：LM27341MY/NOPB、LM27341SD/NOPB，以下是这些产品的关键参数及官网采购报价：

LM27341MY/NOPB，工作温度：-40 to 125，封装：HVSSOP (DGQ)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网LM27341MY/NOPB的批量USD价格：1.065（1000+）

LM27341SD/NOPB，工作温度：-40 to 125，封装：WSON (DSC)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM27341SD/NOPB的批量USD价格：1.065（1000+）

LM27341 PSpice Transient Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

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