L5981 STMicroelectronics, L5981 Datasheet - Page 36

• 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

Revision history
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Revision history
Table 12.
21-Dec-2006
27-May-2008
09-Sep-2008
16-Oct-2007
27-Jan-2009
15-Jun-2009
Date
Document revision history
Revision
1
2
3
4
5
6
Initial release
Document status promoted from preliminary data to datasheet
Updated: Cover page,
Figure 5 on page
Table 8 on page
Added:
Updated:
Updated:
Updated
Doc ID 13004 Rev 6
Table 3 on page 4
Table 4 on page 5
Table 4 on page 5
Equation 18
16,
9,
Figure 17 on page
Table 10 on page 34
Figure 2 on page
and
Changes
Figure 6 on page 9
28,
3,
Figure 8 on page
Figure 18 on page
13,
29,
L5981