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功能与比较器件相同且具有相同引脚。
TLV62565
- 2.7-V to 5.5-V Input Voltage Range
- 1.5-MHz Typical Switching Frequency
- Output Current up to 1.5 A (Max)
- Adaptive On-Time Current Control
- Power Save Mode for Light Load Efficiency
- 50-µA Operating Quiescent Current
- Up to 95% Efficiency
- Over Current Protection
- 95% Maximum Duty Cycle
- Excellent AC and Transient Load Response
- Power Good Output, TLV62566
- Internal Soft Startup of 250 µs (Typ)
- Adjustable Output Voltage
- Thermal Shutdown Protection
- Portable Devices
- DSL Modems
- Hard Disk Drivers
- Set Top Box
- Tablet
All trademarks are the property of their respective owners.
The TLV62565/6 devices are synchronous step-down converters optimized for small solution size and high efficiency. The devices integrate switches capable of delivering an output current up to 1.5 A.
The devices are based on an adaptive on time with valley current mode control scheme. Typical operating frequency is 1.5 MHz at medium to heavy loads. The devices are optimized to achieve very low output voltage ripple even with small external components and feature an excellent load transient response.
During light load, the TLV62565/6 automatically enter into Power Save Mode at the lowest quiescent current (50 µA typ) to maintain high efficiency over the entire load current range. In shutdown, the current consumption is reduced to less than 1 µA.
The TLV62565/6 provide an adjustable output voltage via an external resistor divider. The output voltage start-up ramp is controlled by an internal soft start, typically 250 µs. Power sequencing is possible by configuring the Enable (TLV62565) and Power Good (TLV62566) pins. Other features like over current protection and over temperature protection are built-in. The TLV62565/6 devices are available in a SOT-23 5-pin package.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TLV6256x 1.5-A High Efficiency Step-Down Converters in SOT-23 5-Pin Package 数据表 (Rev. D) | PDF | HTML | 2016-10-5 | ||
| 应用手册 | TI 降压开关直流/直流转换器应用手册的快速参考指南 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2022-7-8 | |
| 模拟设计期刊 | Methods of output-voltage adjustment for DC/DC converters | 2019-6-14 | ||||
| 模拟设计期刊 | Understanding 100% mode in low-power DC/DC converters | 2018-6-22 | ||||
| 用户指南 | Discrete Power Solution for AM437x (Rev. A) | 2017-12-1 | ||||
| 模拟设计期刊 | Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold | 2017-10-24 | ||||
| 模拟设计期刊 | Testing tips for applying external power to supply outputs without an input voltage | 2016-10-24 | ||||
| 模拟设计期刊 | 实现降压型转换器出色 PCB 布局的五个步骤 | 英语版 | 2015-5-1 |
设计与开发
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TIDEP0020 — AM437x 分立式电源参考设计
Sitara AM437x 的简化电源时序功能为电源设计人员提供了灵活性。此参考设计实现方案是一款针对 AM437x 处理器进行 BOM 优化的分立式电源解决方案,采用最少数量的分立式 IC 和基本功能集。该解决方案代表了一个分立式电源解决方案的基线,可针对 AM437x 处理器的更多特性和功能进行扩展。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
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