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TPS54332 参数 Datasheet PDF下载

TPS54332图片预览
型号: TPS54332
PDF下载: 下载PDF文件 查看货源
内容描述: 3.5A , 28V , 1MHz的降压DC / DC转换器,生态modeâ ?? ¢ [3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-mode™]
分类和应用: 转换器
文件页数/大小: 26 页 / 1105 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TPS54332  
www.ti.com  
SLVS875B JANUARY 2009REVISED FEBRUARY 2012  
FUNCTIONAL BLOCK DIAGRAM  
EN  
VIN  
165C  
Thermal  
Shutdown  
1 mA  
3 mA  
Shutdown  
Shutdown  
Logic  
1.25 V  
Enable  
Threshold  
Enable  
Comparator  
Boot  
Charge  
ECO-MODE  
Minimum Clamp  
Boot  
UVLO  
BOOT  
2.1V  
Error  
Amplifier  
12 A/V  
Current  
Sense  
PWM  
Comparator  
PWM  
Latch  
VSENSE  
R
Q
80 mW  
2 mA  
Gate  
Drive  
Logic  
gm = 92 mA/V  
DC gain = 800 V/V  
BW = 2.7 MHz  
S
Voltage  
Reference  
SS  
Slope  
Compensation  
2 kW  
S
0.8 V  
Shutdown  
PH  
Discharge  
Logic  
VSENSE  
Frequency  
Shift  
Oscillator  
GND  
COMP  
Maximum  
Clamp  
TYPICAL CHARACTERISTICS  
CHARACTERIZATION CURVES  
ON RESISTANCE  
vs  
SHUTDOWN QUIESCENT CURRENT  
SWITCHING FREQUENCY  
vs  
vs  
JUNCTION TEMPERATURE  
INPUT VOLTAGE  
JUNCTION TEMPERATURE  
8
1020  
1010  
1000  
120  
VIN = 12 V  
VIN = 12 V  
EN = 0 V  
110  
100  
T
= 150°C  
J
6
T
= -40°C  
J
90  
80  
70  
60  
4
2
0
990  
980  
T
= 25°C  
J
-50  
-25  
0
25  
50  
75  
100  
125  
150  
-50  
-25  
0
25  
50  
75  
100  
125  
150  
T
- Junction Temperature - °C  
8
23  
18  
28  
3
13  
J
TJ - Junction Temperature - °C  
V
- Input Voltage - V  
I
Figure 1.  
Figure 2.  
Figure 3.  
Copyright © 2009–2012, Texas Instruments Incorporated  
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Product Folder Link(s): TPS54332  
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