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TPS65251RHAR 参数 Datasheet PDF下载

TPS65251RHAR图片预览
型号: TPS65251RHAR
PDF下载: 下载PDF文件 查看货源
内容描述: 4.5 V至18 V输入,大电流,同步降压三BUCK切换器,带集成FET [4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK SWITCHER WITH INTEGRATED FET]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器输入元件PC
文件页数/大小: 31 页 / 1946 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TPS65251  
SLVSAA4B JUNE 2010REVISED JANUARY 2011  
www.ti.com  
TYPICAL CHARACTERISTICS  
Buck 2  
TA = 25°C, VIN = 12 V, fSW = 1.14 MHz (unless otherwise noted)  
Figure 8. Start-Up  
VOUT = 2.5 V, 1.5 A  
Figure 9. Ripple  
VOUT = 2.5 V, 1.5 A, fSW = 800 kHz, 5 mV/div  
Figure 10. Transient Load Response  
Figure 11. Transient Supply Response  
VOUT = 2.5 V, I = 1 A to 1.5 A  
VOUT = 2.5 V, VIN = 9 V to 8 V  
Figure 12. Efficiency  
Figure 13. Efficiency  
VOUT = 3.3 V, L = 4.7 µH, DCR = 28 m(Also Applies to  
VOUT = 1.8 V, L = 4.7 µH, DCR = 28 m(Also Applies to  
Buck 3)  
Buck 3)  
10  
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Copyright © 2010–2011, Texas Instruments Incorporated  
Product Folder Link(s): TPS65251