L5970 STMICROELECTRONICS [STMicroelectronics], L5970 Datasheet - Page 4

• Manufacturer Part Number: L5970
• Description: UP TO 1A STEP DOWN SWITCHING REGULATOR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L5970D
Figure 1. Junction Temperature vs. Output
Figure 2. Junction Temperature vs. Output
Figure 3. Junction Temperature vs. Output
4/10
130
120
110
100
Tj(°C)
130
120
110
100
140
120
100
Tj(°C)
Tj(°C)
80
60
40
20
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
0
0.2
0.2
0.2
Vcc=24V
Tamb=25°C
Vcc=12V
Tamb=25°C
Current (SO8) *)
Current (SO8) *)
Current (SO8) *)
Vcc=5V
Tamb=25°C
0.4
0.4
0.4
0.6
0.6
0.6
0.8
0.8
Io(A)
Vo=18V
Io(A)
Io(A)
0.8
1
1
Vo=5V
1
Vo=3.3V
Vo=5V
Vo=12V
1.2
1.2
Vo=2.5V
1.2
1.4
1.4
Vo=2.5V
Vo=1.8V
Vo=3.3V
1.4
1.6
1.6
Figure 4. Load Regulation
Figure 5. Line Regulation
Figure 6. Output Voltage vs. Junction
Temperature
*) Package mounted on demoboard
Vo (V)
3.312
3.308
3.284
3.304
3.296
3.292
3.288
3.276
Vo (V)
Vo (V)
3.304
3.284
3.276
3.312
3.308
3.296
3.292
3.288
1.21
3.28
1.24
1.22
1.25
1.23
3.28
1.2
3.3
3.3
-50
0
0
Vcc = 12V
Vo = 3.3V
Vcc = 12V
Vo = 3.3V
10
0
0.5
Tj = 125°C
Io (A)
Tj = 25°C
Tj (°C)
Vcc (V)
50
20
Tj = 25°C
Tj = 125°C
1
Vcc = 12V
100
30
Vcc=12V
1.5
150
40