L5970D STMicroelectronics, L5970D Datasheet - Page 7

• Manufacturer Part Number: L5970D
• Description: IC REGULATOR SW STEPDWN 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5970D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 35 V
• Current - Output: 1A
• Frequency - Switching: 250kHz
• Voltage - Input: 4.4 ~ 36 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 750mW
• Output Voltage: 35 V
• Output Current: 1 A
• Input Voltage: 4.4 V to 36 V
• Switching Frequency: 212 KHz to 280 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 100 %
• Low Dropout Operation: 100% duty cycle
• For Use With: 497-8849 - BOARD DEMO STW9N150 100W 3PHASE497-4132 - EVAL BOARD FOR L5970 SERIES
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-1415-5

L5970D
4
Typical characteristics
Figure 3.
Figure 5.
Figure 7.
Tj(°C)
130
120
110
100
130
120
110
100
Tj(°C)
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
140
120
100
Tj(°C)
80
60
40
20
0.2
0.2
0
0.2
Vcc=24V
Tamb=25°C
Vcc=12V
Tamb=25°C
Vcc=5V
Tamb=25°C
0.4
0.4
0.4
Junction temperature vs
output current
Junction temperature vs
output current
Junction temperature vs
output current
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=12V
Vo=5V
Vo=3.3V
1.2
1.2
1.2
Vo=2.5V
1.4
1.4
Vo=2.5V
Vo=1.8V
Vo=3.3V
1.4
1.6
1.6
Figure 4.
Figure 6.
Figure 8.
Vo (V)
3.312
3.308
3.284
Vo (V)
Vo (V)
3.304
3.284
3.276
3.304
3.296
3.292
3.288
3.276
3.312
3.308
3.296
3.292
3.288
1.22
1.21
1.24
3.28
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
Load regulator
Line regulator
Output voltage vs junction
temperature
10
0
0.5
Tj = 125°C
Typical characteristics
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
7/16
40