The LMZ22003 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load. The LMZ22003 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ22003 can accept an input voltage rail between 6 V and 20 V and can deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ22003 only requires two external resistors and three external capacitors to complete the power solution. The LMZ22003 is a reliable and robust design with the following protection features: thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, output current limit, and this device allows start-up into a prebiased output. The sync input allows synchronization over the 650- to 950-kHz switching frequency range.

• Integrated Shielded Inductor
• Simple PCB Layout
• Frequency Synchronization Input (650 kHz to 950 kHz)
• Flexible Start-up Sequencing Using External Soft- Start, Tracking and Precision Enable
• Protection Against Inrush Currents and Faults such as Input UVLO and Output Short Circuit
• Junction Temperature Range –40°C to 125°C
• Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
• Fast Transient Response for Powering FPGAs and ASICs
• Fully Enabled for WEBENCH? Power Designer
• Pin Compatible With LMZ23605/LMZ23603/LMZ22005
• Electrical Specifications
  • 18-W Maximum Total Output Power
  • Up to 3-A Output Current
  • Input Voltage Range 6 V to 20 V
  • Output Voltage Range 0.8 V to 6 V
  • Efficiency up to 92%
• Performance Benefits
  • High Efficiency Reduces System Heat Generation
  • Tested To EN55022 Class B(1)
  • Low Component Count, Only 5 External Components
  • Low Output Voltage Ripple
  • Uses PCB as Heat Sink, No Airflow Required

• Iout (Max) (A)
• 3
• Vin (Min) (V)
• 6
• Vin (Max) (V)
• 20
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 6
• Soft start
• Adjustable
• Features
• Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Overcurrent protection, Power Good, Tracking
• Iq (Typ) (uA)
• 2600
• Regulated outputs (#)
• 1
• Switching frequency (Max) (kHz)
• 950
• Switching frequency (Min) (kHz)
• 650
• Duty cycle (Max) (%)
• 83
• Topology
• Buck, Synchronous Buck

LMZ22003的完整型号有：LMZ22003TZ/NOPB、LMZ22003TZE/NOPB、LMZ22003TZX/NOPB，以下是这些产品的关键参数及官网采购报价：

LMZ22003TZ/NOPB，工作温度：-40 to 85，封装：TO-PMOD (NDW)-7，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LMZ22003TZ/NOPB的批量USD价格：6.125（1000+）

LMZ22003TZE/NOPB，工作温度：-40 to 85，封装：TO-PMOD (NDW)-7，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LMZ22003TZE/NOPB的批量USD价格：6.125（1000+）

LMZ22003TZX/NOPB，工作温度：-40 to 85，封装：TO-PMOD (NDW)-7，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LMZ22003TZX/NOPB的批量USD价格：5.104（1000+）

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The LMZ23605/03, LMZ22005/03 evaluation boards are designed to be an easy-to-use platform to evaluate the full capabilities of this family of SIMPLE SWITCHER power modules. The PCB construction has excellent thermal performance and includes extra locations for optional components that may not be (...)

LMZ22003 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。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)