TPS62120中文资料应用 DCS-Control 技术的 15V、75mA 降压转换器，效率为 96%数据手册TI规格书

描述 Description

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.

特性 Features

• 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

简介

TPS62120属于集成电路（IC）的稳压器-DC-DC开关稳压器。由TI制造生产的TPS62120稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。