L5987 STMicroelectronics, L5987 Datasheet - Page 32

• Manufacturer Part Number: L5987
• Description: IC REG STEPDOWN 3A 8VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

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

Application information
6.7
32/41
Application circuit
In
Figure 19. Demonstration board application circuit
Table 9.
Figure 19
Reference
Vin=2.9V - 18V
C1
C2
C3
C4
C5
C6
R1
R2
R3
R4
R5
D1
L1
the demonstration board application circuit is shown.
Component list
22u
25V
C1
GRM32ER61E226KE15
GRM32ER61E226KE15
STPS2L25V
MSS1038-522NL
220n
25V
C6
Part number
GND
VCC
INH
Doc ID 14972 Rev 3
150k
R5
8
3
7
6
FSW
L5987/A
4
COMP
R4
2K
C5 330pF
22 μF, 25 V
22 μF, 25 V
2.2 nF, 50 V
10 nF, 50 V
330 pF, 50 V
220 nF, 25 V
4.99 kΩ, 1%, 0.1 W 0603
2.49 kΩ, 1%, 0.1 W 0603
330 Ω, 1%, 0.1 W 0603
2 kΩ, 1%, 0.1 W 0603
100k.
2 A DC, 2 5V
5.2 μH, 30%, 5.28 A,
DCR
2
5
1
C4 10hF
FB
OUT
SYNCH
MAX
Description
2.49k
= 22 mΩ
R2
L1 5.2uH MSS1038
STPS2L25
D1
330
R3
R1 4.99K
C3 2.2nF
MURATA
MURATA
STMicroelectronics
Coilcraft
Vout=1.8V
Manufacturer
25V
22u
C2
L5987