The TPS6212x device is a highly efficient synchronous step-down DC-DC converter optimized for low-power applications. The device supports up to 75-mA output current and allows the use of tiny external inductors and capacitors.

The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications.

With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions automatically in pulse width modulation (PWM) mode at higher load currents. The power save mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. The device consumes only 10-µA quiescent current from VIN in PFM mode operation.

In shutdown mode, the device is turned off.

An open-drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation.

The TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor.

The TPS6212x operates over an free air temperature range of –40°C to 85°C. The TPS62120 is available in a small 8-pin SOT-23 package and the TPS62122 in a 2 mm × 2 mm 6-pin DFN package.

• Wide Input Voltage Range: 2 V to 15 V
• Up to 96% Efficiency
• Power Save Mode With 11-μA Quiescent Current
• Output Current 75 mA
• Output Voltage Range: 1.2 V to 5.5 V
• Up to 800-kHz Switch Frequency
• Synchronous Converter, No External Rectifier
• Low Output Ripple Voltage
• 100% Duty Cycle for Lowest Dropout
• Small SOT 8-Pin (TPS62120) and 2-mm × 2-mm DFN 6-Pin (TPS62122) Package
• Internal Soft Start
• Power Good Open Drain Output (TPS62120)
• Open-Drain Output for Output Discharge (TPS62120)
• 2.5-V Rising and 1.85-V Falling UVLO Thresholds

• Vin (Min) (V)
• 2
• Vin (Max) (V)
• 15
• Vout (Min) (V)
• 1.2
• Vout (Max) (V)
• 5.5
• Iout (Max) (A)
• 0.075
• Iq (Typ) (uA)
• 11
• Switching frequency (Min) (kHz)
• 800
• Switching frequency (Max) (kHz)
• 800
• Features
• Enable, Light Load Efficiency, Output Discharge, Power Good, Synchronous Rectification
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Constant on-time (COT), DCS-Control
• Duty cycle (Max) (%)
• 100

TPS62120的完整型号有：TPS62120DCNR、TPS62120DCNT，以下是这些产品的关键参数及官网采购报价：

TPS62120DCNR，工作温度：-40 to 85，封装：SOT-23 (DCN)-8，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：NIPDAU，TI官网TPS62120DCNR的批量USD价格：.444（1000+）

TPS62120DCNT，工作温度：-40 to 85，封装：SOT-23 (DCN)-8，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS62120DCNT的批量USD价格：.518（1000+）

TPS62120EVM-640 — TPS62120 评估模块

TPS62120EVM-640 是一个全组装并经过测试的平台，用于评估 TPS62120 转换器的操作和性能。TPS62120EVM-640 的输入电压范围为 2.0V 到 15V，输出电压可使用外部反馈分压网络在 1.2V 到 5.5V 的范围内调节。EVM 电路的最大输出电流是 75mA

TPS62120 PSpice Unencrypted Transient Model (Rev. A)

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 (...)

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PMP9752 — 小巧、简单且高效的用于运放偏置的电压反相器

在此参考设计中，TPS62120 提供用于低功率负电压轨（如使运算放大器偏置）的小型、简单、高效电压逆变电路。此配置已经过测试，附带完整的测试报告和运行说明。