L5981 STMicroelectronics, L5981 Datasheet - Page 34

• 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

Package mechanical data
34/37
Table 10.
Figure 33. Package dimensions
Dim.
ddd
A1
A2
A3
D2
E2
A
D
E
b
e
L
VFQFPN8 (3 x 3 x 1.08 mm) mechanical data
0.80
0.18
2.95
2.23
2.95
1.65
0.30
Min
Doc ID 13004 Rev 6
0.90
0.02
0.70
0.20
0.23
3.00
2.38
3.00
1.70
0.50
0.40
mm
Typ
Max
1.00
0.05
0.30
3.05
2.48
3.05
1.75
0.50
0.08
0.0315
0.0071
0.1161
0.0878
0.1161
0.0587
0.0118
Min
0.0354
0.0008
0.0276
0.0079
0.0091
0.1181
0.0937
0.1181
0.0646
0.0197
0.0157
inch
Typ
0.0394
0.0020
0.0118
0.1200
0.0976
0.1200
0.0685
0.0197
0.0031
Max
L5981