TPS64203 - 采用 SOT-23 封装静态电流为 20uA 的可调节高达 3A 输出的 95% 效率步降控制器

TPS64203是TI德州仪器公司的一款控制器（外部开关）产品，TPS64203是采用 SOT-23 封装静态电流为 20uA 的可调节高达 3A 输出的 95% 效率步降控制器，本站介绍了TPS64203的封装应用图解、特点和优点、功能等，并给出了与TPS64203相关的TI元器件型号供参考。

TPS64203 - 采用 SOT-23 封装静态电流为 20uA 的可调节高达 3A 输出的 95% 效率步降控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C.

产品特性

Step-Down Controller for Applications With up to 95% Efficiency
1.8-V to 6.5-V Operating Input Voltage Range
Adjustable Output Voltage Range From 1.2 V to VI
High Efficiency Over a Wide Load Current Range
100% Maximum Duty Cycle for Lowest Dropout
Internal Softstart
20-µA Quiescent Current (Typical)
Overcurrent Protected
Available in a SOT23 Package
APPLICATIONS
- USB Powered Peripherals
- Organizers, PDAs, and Handheld PCs
- Low Power DSP Supply
- Digital Cameras
- Hard Disk Drives
- Portable Audio Players

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