L5970D STMicroelectronics, L5970D Datasheet - Page 8
L5970D
Manufacturer Part Number
L5970D
Description
IC REGULATOR SW STEPDWN 8-SOIC
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L5970D013TR.pdf
(16 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L5970D
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
L5970D013TR
Manufacturer:
ST
Quantity:
3 400
Company:
Part Number:
L5970D013TR
Manufacturer:
st
Quantity:
4 482
Part Number:
L5970D013TR
Manufacturer:
ST
Quantity:
20 000
Typical characteristics
8/16
Figure 9.
Figure 11. Shutdown current vs junction
Figure 13. Efficiency vs output current
Ishd (µA)
Iq (mA)
70
60
50
40
30
1.6
1.4
1.2
1.8
2
92
90
88
86
84
82
80
78
76
74
72
70
-50
-50
0.1
0.2
Vcc = 12V
Vcc=12V
Quiescent current vs
junction temperature
temperature
Vcc = 12V
DC = 0%
Vo=5V
0.3
Vo=3.3V
0
0
Vo=2.5V
0.4
Tj (°C)
Tj (°C)
0.5
50
50
Io (A)
0.6
0.7
100
100
0.8
0.9
150
150
1
Figure 10. Switching frequency vs
Figure 12. Efficiency vs output current
Fsw (KHz)
250
240
260
230
220
94
92
90
88
86
84
82
80
78
76
74
72
70
0.1
-50
Vcc=5V
0.2
junction temperature
0.3
Vcc = 12V
Vo = 3.3V
Vo=1.8V
Vo=2.5V
Vo=3.3V
0
0.4
0.5
Io (A)
Tj (C)
50
0.6
0.7
100
0.8
L5970D
0.9
150
1