TL2575_10 Datasheet, PDF (11/29 Pages) Texas Instruments – 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS

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TL2575, TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007
TYPICAL CHARACTERISTICS (continued)
20
18
16
14
12
10
8
6
4
2
0
0
V_OUT = 5 V
T_J = 25°C
Measured at GND pin
I_LOAD = 1 A
I_LOAD = 0.2 A
10
20
30
40
50
60
V_IN – Input Voltage – V
Figure 7. Quiescent Current
10
Normalized at T_J = 25°C
8
6
V_IN = 12 V
4
2
0 ^VIN ^{= 40 V}
-2
-4
-6
-8
-10
-50 -25 0 25 50 75 100 125 150
T_J – Junction Temperature – °C
Figure 9. Oscillator Frequency
500
V_ON/OFF = 5 V
450
V_IN = 40 V
400
350
300
250
200
150
100
V_IN = 12 V
50
0
-50 -25 0
25 50 75 100 125 150
T_J – Junction Temperature – °C
Figure 8. Standby Quiescent Current
1.2
1.1
1
0.9 ^{TJ = –40°C}
0.8
T_J = 25°C
0.7
0.6
T_J = 125°C
0.5
0.4
0
0.2
0.4
0.6
0.8
1
I_SW – Switch Current – A
Figure 10. Switch Saturation Voltage
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11