PRODUCT DATASHEET
AAT2603
Total Power Solution for Portable Applications
Pin Configuration
TQFN44-28
(Top View)
ENB1
SELB2
LX1
PGND1
INB1
INB2
PGND2
28
27
26
25
24
23
22
21
20
19
LX2
ENB2
FBB2
ENL3
AGND
FBL3
OUTL3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
EP
18
17
16
15
FBB1
AIN
ENL2
FBL2
OUTL2
INL12
OUTL1
FBL1
ENL1
BYP
ENL4
FBL4
OUTL4
INL34
Part Number Descriptions
Output Voltage
1
Part Number
AAT2603INJ-1-T1
AAT2603INJ-2-T1
AAT2603INJ-3-T1
DC-DC1 (Buck1)
Ext. Adj. (V
FBB1
= 600mV)
3.3V
Ext. Adj. (V
FBB1
= 600mV)
DC-DC2 (Buck2)
(SELB2 = Low)
Ext. Adj. (V
FBB2
= 600mV)
1.0V
1.0V
DC-DC2 (Buck2)
(SELB2 = High)
Ext. Adj. (V
FBB2
= 775mV)
1.3V
1.3V
LDOs 1-4
Ext. Adj. (V
FBLX
= 1.2V)
Ext. Adj. (V
FBLX
= 1.2V)
Ext. Adj. (V
FBLX
= 1.2V)
Absolute Maximum Ratings
1
T
A
= 25°C unless otherwise noted.
Symbol
Description
INBX, INLXX, AIN to AGND
ENBX, ENLX, FBBX, FBLX, BYP to AGND
LX1 to PGND1
LX2 to PGND2
PGNDX to AGND, PGND1 to PGND2
Operating Temperature Range
Storage Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6.0
-0.3 to V
AIN
+0.3
-0.3 to V
INB1
+0.3
-0.3 to V
INB2
+0.3
-0.3 to 0.3
-40 to 150
-65 to 150
300
Units
V
V
V
V
V
°C
°C
°C
Recommended Operating Conditions
Symbol
θ
JA
P
D
Description
Thermal Resistance
Maximum Power Dissipation
Value
50
Units
°C/W
W
2
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum rating should be applied at any one time.
4
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2603.2008.06.1.0
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