L5981 STMicroelectronics, L5981 Datasheet - Page 4

• Manufacturer Part Number: L5981
• Description: IC REG SW STEP DOWN 1A 8-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5981

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 18 V
• Current - Output: 1A
• 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: 1 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: 497-6385 - BOARD EVAL FOR L5981
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Maximum ratings
2
2.1
2.2
4/37
Maximum ratings
Absolute maximum ratings
Table 2.
Thermal data
Table 3.
1. Package mounted on demonstration board.
F
SW
, COMP, SYNCH Analog pin
Symbol
Symbol
R
P
OUT
thJA
Vcc
INH
T
FB
T
TOT
stg
J
Absolute maximum ratings
Thermal data
Maximum thermal resistance
junction-ambient
Input voltage
Output DC voltage
Inhibit pin
Feedback voltage
Power dissipation at T
Junction temperature range
Storage temperature range
Doc ID 13004 Rev 6
Parameter
(1)
Parameter
A
< 60 °C
VFQFPN
-0.3 to V
-0.3 to V
-0.3 to 1.5
-40 to 150
-55 to 150
-0.3 to 4
Value
1.5.
Value
20
60
CC
CC
°C/W
Unit
Unit
°C
°C
L5981
W
V