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产品分类
产品信息
TI 电源管理 开关稳压器 升压-降压稳压器
德州仪器的 2.5V 至 12V 输入电压、93% 效率、2.25A 开关电流限制升压IC TPS63060DSCr 和TPS63061DSCr
说明
TPS6306x 器件为由 3 节(*多 6 节)碱性电池、镍镉电池 (NiCd) 或者镍氢电池 (NiMH) 电池、或者一节锂离子或者锂聚合物电池供电的产品提供了一套电源解决方案。 当使用一个双锂离子或者锂聚合物电池时,输出电流可升高至 2A 并将电池电压放电至 5V 或者更低。 此降压-升压转换器基于一个使用同步整流的固定频率、脉宽调制控制器以获得**率。 在低负载电流情况下,此转换器进入省电模式以在宽负载电流范围内保持*率。 省电模式可被禁用,强制转换器运行在固定的开关频率下。 开关内的*大平均电流被限制在 2.5A(典型值)。 使用一个外部电阻器分压器可对输出电压进行编程,或者在芯片上对输出电压进行内部固定。 转换器可被禁用以大大减少电池消耗。 在关机期间,负载从电池上断开。 此器件封装在一个 10 引脚的小外形尺寸 (SON) PowerPAD封装。 3mm x 3mm 封装内 (DSC)。
特性
- 效率* 93%
- 5V 降压模式下的输出电流为 2A/1A
- 5V 升压模式 (VIN>4V) 下的输出电流为 1.3A
- 降压和升压模式间的自动转换
- 典型器件静态电流少于 30μA
- 输入电压范围:2.5V 至 12V
- 2.5V 至 8V 固定和可调输出电压选项
- 用于改进低输出功率时效率的省电模式
- 2.4MHz 强制固定运行频率并可实现同步
- 电源良好输出
- 降压 - 升压交错控制
- 关机期间负载断开
- 过温保护
- 过压保护
- 采用 3mm x 3mm 小外形尺寸 (SON)-10 封装
器件用途
- 双锂离子电池应用
- 数码相机和摄像放像机
- 笔记本电脑
- 工业计量设备
- *便携移动个人计算机和移动互联网器件
- 个人*产品
- 高功率 LED
Description
The TPS6306x devices provide a power supply solution for products powered by either three-cell up to six-cell alkaline, NiCd or NiMH battery, or a one-cell or dual-cell Li-Ion or Li-polymer battery. Output currents can go as high as 2A while using a dual-cell Li-Ion or Li-Polymer Battery, and discharge it down to 5V or lower. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a t*ical value of 2.25A. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 10-pin SON PowerPAD package measuring 3mm × 3mm (DSC).
Features
- Up to 93% Efficiency
- 2A/1A Output Current at 5V in Buck Mode
- 1.3A Output Current at 5V in Boost Mode (VIN>4V)
- Automatic Transition Between Step Down and Boost Mode
- T*ical Device Quiescent Current less than 30µA
- Input Voltage Range: 2.5V to 12V
- Fixed and Adjustable Output Voltage Options from 2.5V to 8V
- Power Save Mode for Improved Efficiency at Low Output Power
- Forced Fixed Frequency Operation at 2.4MHz and Synchronization Possible
- Power Good Output
- Buck-Boost Overlap Control
- Load Disconnect During Shutdown
- Overtemperature Protection
- Overvoltage Protection
- Available in a 3-mm × 3-mm, SON-10 Package
Device Uses
- Dual LI-Ion Application
- DSC’s and Camcorders
- Notebook Computer
- Industrial Metering Equipment
- Ultra Mobile PC’s and Mobile Internet Devices
- Personal Medical Products
- High Power LED’s