AAT2784 Analogic Corporation, AAT2784 Datasheet - Page 19

• Manufacturer Part Number: AAT2784
• Manufacturer: Analogic Corporation

SystemPower
SystemPower
AAT2784 Losses
Total loss can be estimated by calculating the dropout (V
maximum value. All values assume an 85ºC ambient temperature and a 120ºC junction temperature with the TDFN
50°C/W package.
P
T
2784.2007.11.1.1
2784.2007.11.1.1
LOSS
J(MAX)
Manufacturer
Taiyo Yuden
Taiyo Yuden
Taiyo Yuden
Taiyo Yuden
= I
= T
Sumida
Sumida
Sumida
Sumida
O3
AMB
2 · R
+ θ
DS(ON)H1
JA
*P
TM
TM
LOSS
+2 · (I
CDRH2D11
CDRH2D11
CDRH2D11
CDRH2D11
CBC2518T
CBC2518T
CBC2518T
CBC2016T
Number
= 85ºC + 50°C*0.324W = 101°C.
Part
O1
2 · R
DS(ON)H2,3
Table 3: Typical Surface Mount Inductors.
Inductance
(μH)
) = 1.5A2 · 120mΩ +2 · (0.3A2 · 400mΩ) = 0.342W
1.5
2.2
3.3
4.7
1.0
2.2
4.7
2.2
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
IN
Max DC
Current
= V
1.48
1.27
1.02
0.88
0.92
0.83
(A)
1.2
1.1
O
3-Channel Step-Down DC/DC Converter
3-Channel Step-Down DC/DC Converter
) losses where the power MOSFETs R
0.068
0.098
0.123
0.170
DCR
0.08
0.13
(Ω)
0.2
0.2
PRODUCT DATASHEET
PRODUCT DATASHEET
Size (mm)
3.2x3.2x1.2
3.2x3.2x1.2
3.2x3.2x1.2
3.2x3.2x1.2
2.5x1.8x1.8
2.5x1.8x1.8
2.5x1.8x1.8
2.0x1.6x1.6
LxWxH
AAT2784
AAT2784
DS (ON)
Wire Wound Chip
Wire Wound Chip
Wire Wound Chip
Wire Wound Chip
Shielded
Shielded
Shielded
Shielded
will be at the
Type
19
19