Datasheet

LT8640/LT8640-1
29
Rev.C
For more information www.analog.com
REVISION HISTORY
REV DATE DESCRIPTION PAGE NUMBER
A 10/15 Added LT8640-1 Version to Title
Clarified Minimum On-Time to 35ns
Added LT8640-1 Version
Clarified SYNC/MODE Threshold
Added LT8640-1 Version Specifications
Clarified Minimum Load Graph to Pulse Skipping
Added LT8640-1 Version
All
1, 3
1, 2, 4
3
4
7
11 to 25
B 01/18 Clarified Efficiency Conditions
Clarified Minimum On-Time to 30ns
Added LT8640HUDC-1
Added New Note 3, Note 3 became Note 4
Clarified Minimum On-Time Graph
Clarified Case Temperature Graph
Clarified SYNC/MODE Pin Description
Clarified Block Drawing
Clarified Operation Section
Clarified Pulse-Skipping Mode Section
Clarified Forced Continuous Mode Section
Clarified Spread Spectrum Mode Section
Clarified Operating Switching Frequency Section
Clarified Inductor Selection and Maximum Output Current Section
Clarified Thermal Considerations and Peak Output Current Section/Graph
Clarified Output Capacitor on Typical Applications
Clarified Inductor on Lower Typical Application
1
1,3
2
4
6
8
12
12
13
16
16
17
18
19
23
24,25,28
24
C 02/19 Added Side Wettable Flank QFN Package Option
Added LT8640 Options Table, Reduced Description
Added Side Wettable Flanks Parts
Clarified SYNC/MODE Pin Description
Clarified Figure 1 V
OUT
VIA
Clarified L
MIN
Formula
Formula 10 becomes 11
Clarified Shorted and Reversed Input Protection Paragraph
Added Side Wettable Flank QFN Package Option
1
1
2
12
14
20
21
22
28
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.