The LM2830 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in a 5-pin SOT-23 and a 6-Pin WSON package. The device provides 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 LM2830 regulator is easy to use. The ability to drive 1.0-A loads with an internal 130-mΩ PMOS switch using state-of-the-art 0.5-μm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.6 V. Switching frequency is internally set to 1.6 MHz, or 3.0 MHz, allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2830 regulator uses 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.

• LM2830Z-Q1 and LM2830X-Q1 in the SOT-23 Package are Automotive-Grade Products thatare AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)
• Space-Saving SOT-23 Package
• Input Voltage Range of 3.0 V to 5.5 V
• Output Voltage Range of 0.6 V to 4.5 V
• 1.0-A Output Current
• High Switching Frequencies
  • 1.6 MHz (LM2830X)
  • 3.0 MHz (LM2830Z)
• 130-mΩ PMOS Switch
• 0.6-V, 2% Internal Voltage Reference
• Internal Soft-Start
• Current Mode, PWM Operation
• Thermal Shutdown
• Overvoltage Protection

• Vin (Min) (V)
• 3
• Vin (Max) (V)
• 5.5
• Vout (Min) (V)
• 0.6
• Vout (Max) (V)
• 4.5
• Iout (Max) (A)
• 1
• Iq (Typ) (uA)
• 3300
• Switching frequency (Min) (kHz)
• 1600
• Switching frequency (Max) (kHz)
• 3000
• Features
• Enable, Light Load Efficiency
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 94

LM2830的完整型号有：LM2830XMF/NOPB、LM2830XMFX/NOPB、LM2830ZMF/NOPB、LM2830ZSD/NOPB、LM2830XMF，以下是这些产品的关键参数及官网采购报价：

LM2830XMF/NOPB，工作温度：-40 to 125，封装：SOT-23 (DBV)-5，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LM2830XMF/NOPB的批量USD价格：.755（1000+）

LM2830XMFX/NOPB，工作温度：-40 to 125，封装：SOT-23 (DBV)-5，包装数量MPQ：3000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LM2830XMFX/NOPB的批量USD价格：.629（1000+）

LM2830ZMF/NOPB，工作温度：-40 to 125，封装：SOT-23 (DBV)-5，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LM2830ZMF/NOPB的批量USD价格：.629（1000+）

LM2830ZSD/NOPB，工作温度：-40 to 125，封装：WSON (NGG)-6，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LM2830ZSD/NOPB的批量USD价格：.629（1000+）

LM2830XMF，工作温度：-40 to 125，封装：SOT-23 (DBV)-5，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：SNPB，TI官网LM2830XMF的批量USD价格：1.132（1000+）

LM2830X 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 (...)

PMP8631 — 具有 5V 输入和 1.3V/600mA 输出的降压转换器

This design is a non-synchronous buck converter which operates at 5.0V input voltage and provides 1.3V @ 600mA. For comparisson of the size of the passive components and the performance, one converter is running at 1.6 MHz, the other one at 3.0 MHz.