L5987TR STMicroelectronics, L5987TR Datasheet - Page 6

• Manufacturer Part Number: L5987TR
• Description: IC REG SW 3A STEPDOWN 8-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5987TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 18 V
• Current - Output: 3A
• Frequency - Switching: 250kHz
• Voltage - Input: 2.9 ~ 18 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-VFQFN, 8-VFQFPN
• Power - Output: 1.5W
• 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 %
• For Use With: 497-8369 - BOARD EVALUATION FOR L5987
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8494-2

Electrical characteristics
4
6/41
Electrical characteristics
T
Table 4.
Oscillator
Dynamic characteristics
DC characteristics
Inhibit
Soft-start
J
Symbol
V
R
I
= 25 °C, V
V
QST-BY
V
CCHYS
F
V
DS(on)
F
CCON
V
T
I
FSW
LIM
ADJ
I
SW
D
CC
SS
FB
Q
Operating input voltage
range
Turn on V
V
MOSFET on resistance
Maximum limiting current
Switching frequency
FSW pin voltage
Duty cycle
Adjustable switching
frequency
Feedback voltage
Quiescent current
Total stand-by quiescent
current
INH threshold voltage
INH current
Soft-start duration
Electrical characteristics
CC
CC
= 12 V, unless otherwise specified.
UVLO hysteresis
Parameter
CC
threshold
Doc ID 14972 Rev 3
(1)
(1)
(1)
(1)
(1)
R
2.9 V < V
Duty Cycle = 0,
V
Device ON level
Device OFF level
INH = 0
FSW pin floating
F
R
SW
FB
FSW
FSW
= 0.8 V
Test condition
= 1 MHz,
= 33 kΩ
= 33 kΩ
CC
< 18 V
(1)
0.175
0.593
Min
225
220
1.9
2.9
3.5
7.4
0
Values
1.262
1000
Typ
140
140
250
4.0
0.6
7.5
8.2
20
2
0.607
Max
170
220
275
265
100
2.9
0.3
4.4
2.4
0.6
9.1
18
30
10
L5987
Unit
kHz
kHz
mΩ
mA
ms
μA
μA
%
V
A
V
V
V