The TPS6211x devices are a family of low-noise synchronous step-down DC-DC converters that are ideally suited for systems powered from a 2- to 4-cell Li-ion battery or from a 12-V or 15-V rail.

The TPS6211x devices are synchronous pulse width modulation (PWM) converters with integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase efficiency and to reduce external component count. To achieve highest efficiency over a wide load-current range, the converter enters a power-saving, pulse frequency modulation (PFM) mode at light load currents. Operating frequency is typically 1 MHz, allowing the use of small inductor and capacitor values. The device can be synchronized to an external clock signal in the range of 0.8 MHz to 1.4 MHz. For low-noise operation, the converter can be operated in PWM-only mode. In shutdown mode, the current consumption is reduced to less than 2 μA. The TPS6211x family of devices are available in the 16-pin (RSA) VQFN package, and operate over a free-air temperature range of –40°C to 85°C.

• High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
• 3.1-V to 17-V Operating Input Voltage Range
• Adjustable Output Voltage Range: 1.2 V to 16 V
• Fixed Output Voltage Options Available in 3.3 V and 5 V
• Synchronizable to External Clock: Up to 1.4 MHz
• Up to 1.5-A Output Current
• High Efficiency Over a Wide Load-Current Range Due to PFM/PWM Operation Mode
• 100% Maximum Duty Cycle for Lowest Dropout
• 20-μA Quiescent Current (Typical)
• Overtemperature and Overcurrent Protected
• Available in 16-Pin VQFN Package

• Vin (Min) (V)
• 3.1
• Vin (Max) (V)
• 17
• Vout (Min) (V)
• 3.3
• Vout (Max) (V)
• 3.3
• Iout (Max) (A)
• 1.5
• Iq (Typ) (uA)
• 20
• Switching frequency (Min) (kHz)
• 900
• Switching frequency (Max) (kHz)
• 1100
• Features
• Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Power Good, Synchronous Rectification
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 100

TPS62111的完整型号有：TPS62111RSAR、TPS62111RSAT，以下是这些产品的关键参数及官网采购报价：

TPS62111RSAR，工作温度：-40 to 85，封装：QFN (RSA)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS62111RSAR的批量USD价格：.869（1000+）

TPS62111RSAT，工作温度：-40 to 85，封装：QFN (RSA)-16，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS62111RSAT的批量USD价格：1.043（1000+）

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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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