The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V 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 typical value of 1000 mA. 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 TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5-mm × 2.5-mm (DSK).

• Input voltage range: 1.8 V to 5.5 V
• Fixed and adjustable output voltage options from 1.2 V to 5.5 V
• Up to 96% efficiency
• 800-mA Output current at 3.3 V in step-down mode (VIN = 3.6 V to 5.5 V)
• Up to 500-mA output current at 3.3 V in boost mode (VIN > 2.4 V)
• Automatic transition between step-down and boost mode
• Device quiescent current less than 50 μA
• Power-save mode for improved efficiency at low-output power
• Forced fixed frequency operation and synchronization possible
• Load disconnect during shutdown
• Overtemperature protection
• Available in a small 2.5-mm × 2.5-mm 10-pin VSON package (QFN)

• Topology
• Buck-Boost
• Vin (Min) (V)
• 1.8
• Vin (Max) (V)
• 5.5
• Vout (Max) (V)
• 3.3
• Vout (Min) (V)
• 3.3
• Duty cycle (Max) (%)
• 100
• Features
• Enable, Frequency Synchronization, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed
• Switch current limit (Typ) (A)
• 1
• Switching frequency (Min) (kHz)
• 2200
• Switching frequency (Max) (kHz)
• 2600
• Iq (Typ) (mA)
• 0.025
• Iout (Max) (A)
• 0.4
• Rating
• Catalog

TPS63031的完整型号有：TPS63031DSKR、TPS63031DSKT，以下是这些产品的关键参数及官网采购报价：

TPS63031DSKR，工作温度：-40 to 125，封装：SON (DSK)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS63031DSKR的批量USD价格：.725（1000+）

TPS63031DSKT，工作温度：-40 to 125，封装：SON (DSK)-10，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS63031DSKT的批量USD价格：.87（1000+）

TPS63031 Unencrypted PSpice Transient Model Package (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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Battery Lifetime Estimator (Rev. A)

在此参考设计中，使用 PM2.5 创建并实施了一个简单的空气质量监测器。此设计使用 MSP430FR4133 微控制器 (MCU) 和 Sharp DN7C3CA006 PM2.5 传感器。这种以超低功耗为中心的 MSP430 MCU 设计与 DN7C3CA006 的集成模拟协同工作，以捕获空气样本并计算空气质量指数 (AQI)。从周期性 PM2.5 样本中，使用 8 字符、14 段 LCD 计算和显示 AQI。