L5983TR STMicroelectronics, L5983TR Datasheet - Page 30

• Manufacturer Part Number: L5983TR
• Description: IC REG SW 1.5A STEPDOWN 8-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5983TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 18 V
• Current - Output: 1.5A
• 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
• For Use With: 497-6386 - BOARD EVAL FOR L5983
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6860-2; L5983TR

Application information
5.7
30/43
Application circuit
In
Figure 18. Demonstration board application circuit
Table 9.
Figure 18
VIN=3.3V to 18V
VIN=3.3V to 18V
VIN=3.3V to 18V
VIN=3.3V to 18V
Reference
10uF
10uF
10uF
10uF
C1
C1
C1
C1
C1
C2
C3
C4
C5
C6
R1
R2
R3
R4
R5
D1
L1
the demonstration board application circuit is shown.
Component list
68nF
68nF
68nF
68nF
C6
C6
C6
C6
GRM31CR61C226KE15B
GRM31CR61E106KA12
GND
GND
GND
GND
VCC
VCC
VCC
VCC
INH
INH
INH
INH
Part number
7447779006
STPS2L25V
R5 100K
R5 100K
8
8
8
8
7
7
7
7
3
3
3
3
Doc ID 13005 Rev 7
FSW
FSW
FSW
FSW
6
6
6
6
L5985
L5983
L5985
L5983
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
4
4
4
4
R4 2.49K
R4 2.49K
R4 2.49K
R4 2.49K
1
1
1
1
1
1
1
1
2
2
2
2
5
5
5
5
C5 220pF
C5 220pF
C5 220pF
C5 220pF
4.99 kΩ, 1 %, 0.1 W 0603
2.99 kΩ, 1 %, 0.1 W 0603
100 kΩ, 1 %, 0.1 W 0603
1.1 kΩ, 1 %, 0.1 W 0603
330 Ω, 1 %, 0.1 W 0603
OUT
OUT
OUT
OUT
SYNCH
SYNCH
SYNCH
SYNCH
6.8 uH, 30 %, 2.91 A
FB
FB
FB
FB
C4 10nF
C4 10nF
C4 10nF
C4 10nF
220 pF, 50 V
Description
2.2 nF, 50 V
10 μF, 25 V
10 nF, 50 V
68 nF, 25 V
22 μf, 16 V
2 A, 2 5V
R2 1.1K
R2 1.1K
R2 1.1K
R2 1.1K
D1
D1
D1
D1
STPS2L25U
STPS2L25U
STPS2L25U
STPS2L25U
L1 6.8uH
L1 6.8uH
L1 6.8uH
L1 6.8uH
R3 330
R3 330
R3 330
R3 330
R1 4.99K
R1 4.99K
R1 4.99K
R1 4.99K
C3 2.2nF
C3 2.2nF
C3 2.2nF
C3 2.2nF
STMicroelectronics
Manufacturer
MURATA
MURATA
Coilcraft
Vout=3.3V
Vout=3.3V
Vout=3.3V
Vout=3.3V
22uF
22uF
22uF
22uF
C2
C2
C2
C2
L5983