AAT1143IJS-0.6-T1 AnalogicTech, AAT1143IJS-0.6-T1 Datasheet - Page 16

• Manufacturer Part Number: AAT1143IJS-0.6-T1
• Description: 1MHz 400mA Step-Down Converter
• Manufacturer: AnalogicTech

AAT1143 Losses
P
T
16
16
SwitchReg
SwitchReg
J(MAX)
TOTAL
=
+ (t
=
+ (5ns · 1.0MHz · 0.4A + 50μA) · 4.2V = 122mW
= T
I
0.4
O
sw
AMB
2
· (R
2
· F
· (0.725 Ω · 1.8V + 0.7Ω · [4.2V - 1.8V])
+ Θ
S
TM
TM
DS(ON)H
· I
JA
O
· P
+ I
· V
LOSS
Q
) · V
O
+ R
= 85°C + (160°C/W) · 122mW = 104.5°C
V
IN
IN
4.2V
DS(ON)L
· [V
IN
-V
O
] )
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
1MHz 400mA Step-Down Converter
1MHz 400mA Step-Down Converter
PRODUCT DATASHEET
PRODUCT DATASHEET
AAT1143
AAT1143
1143.2009.02.1.11
1143.2009.02.1.11