TPS62000-HT中文资料高温高效降压低功耗直流/直流转换器数据手册TI规格书

描述 Description

The TPS62000 device is a low-noise synchronous step-down dc-dc converter that is ideally suited for systems powered from a 1-cell Li-ion battery or from a 2- to 3-cell NiCd, NiMH, or alkaline battery. The TPS62000 operates typically down to an input voltage of 1.8 V, with a specified minimum input voltage of 2 V. The TPS62000 is a synchronous current-mode PWM converter with integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase efficiency and to reduce external component count. To achieve the 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 750 kHz, allowing the use of small inductor and capacitor values. The device can be synchronized to an external clock signal in the range of 500 kHz to 1 MHz. For low-noise operation, the converter can be operated in the PWM mode and the internal antiringing switch reduces noise and EMI. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS62000-HT is available in the 10-pin (HKK). The device operates a free-air temperature range of –55°C to 210°C.

特性 Features

• High-Efficiency Synchronous Step-Down Converter With Greater Than 95% Efficiency
• Adjustable Output Voltage Range From 0.8 V to VI
• Up to 300 mA Output Current
• High Efficiency Over a Wide Load Current Range in Power Save Mode
• Low-Noise Operation Antiringing Switch and PFM/PWM Operation Mode
• 50-µA Quiescent Current (TYP)
• APPLICATIONS
• High Temperature Environments
• SUPPORTS EXTREME TEMPERATURE APPLICATIONS
• One Assembly/Test Site
• Available in Extreme (–55°C/210°C) Temperature Range
• Extended Product-Change Notification
• Texas Instruments high temperature products utilize highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures.


Custom temperature ranges available.