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TPS54260DGQR 参数 Datasheet PDF下载

TPS54260DGQR图片预览
型号: TPS54260DGQR
PDF下载: 下载PDF文件 查看货源
内容描述: 3.5V至60V输入, 2.5A降压转换器具有Eco-Mode ™ [3.5V to 60V INPUT, 2.5A, STEP DOWN CONVERTER WITH ECO-MODE™]
分类和应用: 转换器输入元件
文件页数/大小: 47 页 / 1694 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TPS54260  
SLVSA86 MARCH 2010  
www.ti.com  
ELECTRICAL CHARACTERISTICS (continued)  
TJ = –40°C to 150°C, VIN = 3.5 to 60V (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX UNIT  
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)  
Switching Frequency Range using  
RT mode  
100  
450  
300  
2500  
720  
kHz  
kHz  
kHz  
fSW  
Switching frequency  
RT = 200 kΩ  
581  
Switching Frequency Range using  
CLK mode  
2200  
Minimum CLK input pulse width  
RT/CLK high threshold  
40  
1.9  
0.7  
ns  
V
2.2  
RT/CLK low threshold  
0.5  
V
RT/CLK falling edge to PH rising  
edge delay  
Measured at 500 kHz with RT resistor in series  
Measured at 500 kHz  
60  
ns  
PLL lock in time  
100  
ms  
SLOW START AND TRACKING (SS/TR)  
Charge current  
VSS/TR = 0.4 V  
2
45  
mA  
mV  
V
SS/TR-to-VSENSE matching  
SS/TR-to-reference crossover  
SS/TR discharge current (overload)  
SS/TR discharge voltage  
VSS/TR = 0.4 V  
98% nominal  
1.15  
382  
54  
VSENSE = 0 V, V(SS/TR) = 0.4 V  
VSENSE = 0 V  
mA  
mV  
POWER GOOD (PWRGD PIN)  
VSENSE falling  
92%  
94%  
109%  
107%  
2%  
VSENSE rising  
VVSENSE  
VSENSE threshold  
VSENSE rising  
VSENSE falling  
Hysteresis  
VSENSE falling  
Output high leakage  
On resistance  
VSENSE = VREF, V(PWRGD) = 5.5 V, 25°C  
I(PWRGD) = 3 mA, VSENSE < 0.79 V  
V(PWRGD) < 0.5 V, II(PWRGD) = 100 mA  
10  
nA  
50  
Minimum VIN for defined output  
0.95  
1.5  
V
4
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Copyright © 2010, Texas Instruments Incorporated  
Product Folder Link(s): TPS54260  
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