PT78HT205 Datasheet, PDF (2/3 Pages) Texas Instruments – 2 Amp Positive Step-Down Integrated Switching Regulator

PT78HT200 Series
2 Amp Positive Step-Down
Integrated Switching Regulator
Typical Characteristics
PT78HT233 3.3 VDC (See Note A)
PT78HT205 5.0 VDC (See Note A)
PT78HT208 8.0 VDC (See Note A)
Efficiency vs Output Current
100
90
80
70
60
50
0
0.4
0.8
1.2
1.6
Iout (A)
V_IN
9.0V
10.0V
15.0V
2
Efficiency vs Output Current
100
90
80
70
60
50
0
0.4
0.8
1.2
1.6
Iout (A)
VIN
9.0V
12.0V
15.0V
18.0V
24.0V
28.0V
2
Efficiency vs Output Current
100
90
80
70
60
50
0
0.4
0.8
1.2
1.6
Iout (A)
VIN
12.0V
15.0V
20.0V
28.0V
2
Ripple vs Output Current
125
100
75
50
25
0
0
0.4
0.8
1.2
1.6
Iout (A)
VIN
15.0V
10.0V
9.0V
2
Ripple vs Output Current
125
100
75
50
25
0
0
0.4
0.8
1.2
1.6
Iout (A)
VIN
28.0V
24.0V
18.0V
15.0V
12.0V
9.0V
2
Ripple vs Output Current
125
100
75
50
25
0
0
0.4
0.8
1.2
1.6
Iout (A)
VIN
28.0V
20.0V
15.0V
12.0V
2
Power Dissipation vs Output Current
2.5
2
VIN
1.5
15.0V
10.0V
1
9.0V
0.5
0
0
0.4
0.8
1.2
1.6
2
Iout (A)
Power Dissipation vs Output Current
2.5
VIN
2
28.0V
1.5
24.0V
18.0V
15.0V
1
12.0V
9.0V
0.5
0
0
0.4
0.8
1.2
1.6
2
Iout (A)
Power Dissipation vs Output Current
2.5
2
VIN
1.5
28.0V
20.0V
15.0V
1
12.0V
0.5
0
0
0.4
0.8
1.2
1.6
2
Iout (A)
Safe Operating Area @V_in =12V (Note B)
90.0
80.0
70.0
Airflow
60.0
200LFM
120LFM
50.0
Nat conv
40.0
30.0
20.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Safe Operating Area @V_in =15V (Note B)
90.0
80.0
70.0
Airflow
60.0
200LFM
120LFM
50.0
Nat conv
40.0
30.0
20.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Safe Operating Area @V_in =15V (Note B)
90.0
80.0
70.0
Airflow
60.0
200LFM
120LFM
50.0
Nat conv
40.0
30.0
20.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Note A: All characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.
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