TPS62122 - 效率高达 96% 的 15V 75mA 降压转换器

TPS62122是TI德州仪器公司的一款转换器（集成开关）产品，TPS62122是效率高达 96% 的 15V 75mA 降压转换器，本站介绍了TPS62122的封装应用图解、特点和优点、功能等，并给出了与TPS62122相关的TI元器件型号供参考。

TPS62122 - 效率高达 96% 的 15V 75mA 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

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

产品应用

Low Power RF Applications
Ultra Low Power Microprocessors
Energy Harvesting
Industrial Measuring

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS62120	SOT-23 (8)	2.90 mm × 1.63 mm
TPS62122	SON (6)	2.00 mm × 2.00 mm

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