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参数资料
| 型号： | PT78HT265T |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX |
| 文件页数： | 2/9页 |
| 文件大小： | 263K |
| 代理商： | PT78HT265T |
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Typical Characteristics
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.
PT78HT205 5.0 VDC (See Note A)
PT78HT233 3.3 VDC (See Note A)
Efficiency vs Output Current
Ripple vs Output Current
Safe Operating Area @Vin =12V (Note B)
Power Dissipation vs Output Current
2 Amp Positive Step-Down
Integrated Switching Regulator
PT78HT200 Series
PT78HT208 8.0 VDC (See Note A)
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2
Iout (A)
Efficiency
-
%
9.0V
10.0V
15.0V
VIN
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Ambient
Temperature
(°C)
200LFM
120LFM
Nat conv
Airflow
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Safe Operating Area @Vin =15V (Note B)
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Safe Operating Area @Vin =15V (Note B)
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2
Iout (A)
Efficiency
-
%
9.0V
12.0V
15.0V
18.0V
24.0V
28.0V
VIN
0
25
50
75
100
125
0
0.4
0.8
1.2
1.6
2
Iout (A)
Ripple
-
mV
28.0V
24.0V
18.0V
15.0V
12.0V
9.0V
VIN
0
0.5
1
1.5
2
2.5
0
0.4
0.8
1.2
1.6
2
Iout (A)
Pd
-
Watts
28.0V
24.0V
18.0V
15.0V
12.0V
9.0V
VIN
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Ambient
Temperature
(°C)
200LFM
120LFM
Nat conv
Airflow
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
0.0
0.4
0.8
1.2
1.6
2.0
Iout (A)
Ambient
Temperature
(°C)
200LFM
120LFM
Nat conv
Airflow
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2
Iout (A)
Efficiency
-
%
12.0V
15.0V
20.0V
28.0V
VIN
0
25
50
75
100
125
0
0.4
0.8
1.2
1.6
2
Iout (A)
Ripple
-
mV
28.0V
20.0V
15.0V
12.0V
VIN
0
0.5
1
1.5
2
2.5
0
0.4
0.8
1.2
1.6
2
Iout (A)
Pd
-
Watts
28.0V
20.0V
15.0V
12.0V
VIN
0
0.5
1
1.5
2
2.5
0
0.4
0.8
1.2
1.6
2
Iout (A)
Pd
-
Watts
15.0V
10.0V
9.0V
VIN
0
25
50
75
100
125
0
0.4
0.8
1.2
1.6
2
Iout (A)
Ripple
-
mV
15.0V
10.0V
9.0V
VIN
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| PT78NR108ST | 0.55 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, SMA3 |
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