L5985 STMicroelectronics, L5985 Datasheet - Page 31
L5985
Manufacturer Part Number
L5985
Description
IC REG SW STEP DOWN 2A 8-VFQFPN
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L5985TR.pdf
(37 pages)
Specifications of L5985
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.6 ~ 18 V
Current - Output
2A
Frequency - Switching
250kHz ~ 1MHz
Voltage - Input
2.9 ~ 18 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-VFQFN, 8-VFQFPN
Power - Output
1.5W
Output Voltage
3 V
Output Current
2 A
Input Voltage
2.9 V to 18 V
Switching Frequency
220 KHz to 275 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
497-6387 - BOARD EVAL FOR L5985
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
L5985
Manufacturer:
STMicroelectronics
Quantity:
1 035
Part Number:
L5985
Manufacturer:
ST
Quantity:
20 000
Part Number:
L5985TR
Manufacturer:
ST
Quantity:
20 000
Part Number:
L5985TR-LF4
Manufacturer:
ST
Quantity:
20 000
L5985
Figure 22. Junction temperature vs output
Figure 24. Junction temperature vs output
Figure 26. Efficiency vs output current
94
92
90
88
86
84
82
80
78
76
0
current
current
0.5
VCC=5V,
F
SW
=250kHz
1
Io [A]
1.5
Vo=3.3V
Vo=2.5V
Vo=1.8V
Doc ID 13006 Rev 5
2
Figure 23. Junction temperature vs output
Figure 25. Efficiency vs output current
Figure 27. Efficiency vs output current
95
90
85
80
75
70
95
90
85
80
75
70
0.0
0
current
0.5
0.5
VCC=12V
F
VCC=3.3V,
F
SW
SW
=250KHz
=250kHz
1.0
1
Io [A]
Io [A]
Application information
1.5
1.5
Vo=2.5V
Vo=1.8V
Vo=1.2V
Vo=3.3V
Vo=5.0V
Vo=2.5V
2.0
2
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