L5987 STMicroelectronics, L5987 Datasheet - Page 34
L5987
Manufacturer Part Number
L5987
Description
IC REG STEPDOWN 3A 8VFQFPN
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L5987TR.pdf
(41 pages)
Specifications of L5987
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.6 V ~ 18 V
Current - Output
3A
Frequency - Switching
250kHz
Voltage - Input
2.9 V ~ 18 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
8-VFQFN, Exposed Pad
Output Voltage
0.6 V
Output Current
3 A
Output Power
1.5 W
Input Voltage
2.9 V to 18 V
Switching Frequency
250 KHz
Mounting Style
SMD/SMT
Duty Cycle (max)
100 %
Low Dropout Operation
100 % duty cycle
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
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Price
Application information
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Figure 23. Junction temperature vs
Figure 25. Junction temperature vs
Figure 27. Efficiency vs output current
95
95
90
90
85
85
80
80
75
75
70
70
0.3
0.3
V
V
0.8
0.8
IN
IN
output current V
output current V
V
=5V
=5V
IN
= 5 V
1.3
1.3
Io [A]
Io [A]
1.8
1.8
V
V
V
V
Doc ID 14972 Rev 3
IN
IN
O
O
O
O
=2.5V
=2.5V
=1.8V
=1.8V
2.3
2.3
= 12 V
= 3.3 V
F
F
V
V
SW
SW
O
O
=3.3V
=3.3V
=250kHz
=250kHz
2.8
2.8
Figure 24. Junction temperature vs
Figure 26. Efficiency vs output current
Figure 28. Efficiency vs output current
92
92
90
90
88
88
86
86
84
84
82
82
80
80
78
78
76
76
0.3
0.3
95
90
85
80
75
70
65
0.3
V
V
V
IN
IN
IN
0.8
0.8
=3.3V
0.8
=12V
=12V
output current V
V
V
IN
IN
= 12 V
= 3.3 V
1.3
1.3
1.3
Io [A]
Io [A]
Io [A]
1.8
1.8
1.8
IN
V
V
V
O
O
O
2.3
V
V
V
V
V
V
2.3
2.3
=2.5V
=1.8V
=1.2V
= 5 V
O
O
O
O
O
O
=5V
=5V
=3.3V
=3.3V
=2.5V
=2.5V
F
F
SW
SW
=250kHz
=250kHz
L5987
2.8
2.8
2.8