Texas Instruments TPS63070寬輸入電壓升壓-降壓轉換器

Texas Instruments TPS63070寬輸入電壓升壓-降壓轉換器是一種高效率、低靜態電流的升壓-降壓轉換器。它們適用於輸入電壓可能高於或低於輸出電壓的應用。升壓和降壓模式的輸出電流可高達2A。該升壓-降壓轉換器基於固定頻率的脈衝調節(PWM)控制器，採用同步校正以取得最大效率。在低負載電流情形下，該轉換器會進入省電模式，以保持寬廣負載電流範圍的高效率。該轉換器可禁用以降低電池耗電量。在關機期間，負載從電池斷開連接。裝置採用2.5mmx3mm QFN封裝。

特點

2.0V to 16V input voltage range
2.5V to 9V output voltage range
Up to 95% efficiency
± 1% DC accuracy in PWM mode
+3% / –1% DC accuracy in PFM mode
2A output current in buck mode
2A output current in boost mode (V_IN = 4V; V_OUT = 5V)
Automatic transition between step-down and boost mode
Forced fixed frequency operation at 2.4MHz and synchronization option
50µA typical device quiescent current

Fixed and adjustable output voltage options
Precise ENABLE input allows
- User-defined undervoltage lockout
- Exact sequencing
Power-save mode for improved efficiency at low output power
Power good output
V_SEL allows output voltage change
Load disconnect during shutdown
Overtemperature protection
Input / output overvoltage protection
QFN package