AAT1140IGV-0.6-T1 View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT1140IGV-0.6-T1' PDF : 19 Pages View PDF
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AAT1140 Losses
PTOTAL
=
IO2
·
(RDSON(HS)
·
VO
+ RDSON(LS)
VIN
·
[VIN
-VO])
+ (tsw · F · IO + IQ) · VIN
PRODUCT DATASHEET
AAT1140
Fast Transient 600mA Step-Down Converter
0.62 · (0.725Ω · 1.8V + 0.7Ω · [4.2V - 1.8V])
=
4.2V
+ (5ns · 1.4MHz · 0.6A + 70μA) · 4.2V = 118mW
TJ(MAX) = TAMB + ΘJA · PLOSS = 85°C + (150°C/W) · 118mW = 102.7°C
1140.2007.12.1.1
www.analogictech.com
17
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