參數(shù)資料
型號: TPS7348y
廠商: Texas Instruments, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Low-Dropout Voltage Regulators(帶RESET功能,低壓差PMOS穩(wěn)壓器)
中文描述: 低壓差穩(wěn)壓器(帶復(fù)位功能,PMOS的低壓差穩(wěn)壓器)
文件頁數(shù): 28/37頁
文件大?。?/td> 839K
代理商: TPS7348Y
TPS7301Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124D – JUNE 1995 – REVISED JANUARY 1997
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
THERMAL INFORMATION
Comparing P
D(total)
with P
D(max)
reveals that the power dissipation in this example does not exceed the maximum
limit. When it does, one of two corrective actions can be taken. The power-dissipation limit can be raised by increasing
either the airflow or the heat-sink area. Alternatively, the internal power dissipation of the regulator can be lowered
by reducing either the input voltage or the load current. In either case, the above calculations should be repeated with
the new system parameters.
Copper Heat Sink
1 oz Cu
Figure 38. Thermally Enhanced PWB Layout (not to scale) for the 20-Pin TSSOP
Figure 39
110
90
70
50
0
50
100
150
200
250
130
150
THERMAL RESISTANCE, JUNCTION-TO-AMBIENT
vs
AIR FLOW
170
300
190
°
J
θ
R
0 cm2
8 cm2
2 cm2
4 cm2
1 cm2
Component/Board System
20-Lead TSSOP
Air Flow – ft/min
Figure 40
110
90
70
50
0
50
100
150
200
250
130
150
170
300
190
THERMAL RESISTANCE, JUNCTION-TO-AMBIENT
vs
AIR FLOW
0 cm2
4 cm2
2 cm2
8 cm2
1 cm2
°
J
θ
R
Component/Board System
20-Lead TSSOP
Includes Thermally Conductive
Compound Between Body and Board
Air Flow – ft/min
相關(guān)PDF資料
PDF描述
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TPS73615DBV Cap-Free, NMOS, 400mA Low-Dropout Regulator with Reverse Current Protection
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