PRODUCT DATASHEET
AAT2603
Total Power Solution for Portable Applications
Electrical Characteristics
1
V
AIN
= V
INB1
= V
INB2
= V
INL12
= V
INL34
= 3.6V, C
BYP
= 10nF, T
A
= -40°C to 85°C, unless noted otherwise. Typical values are
at T
A
= 25°C.
Symbol
Description
Conditions
Min
2.7
V
ENB1
= V
ENL3
= 3.6V, No Load , V
FBB1
= V
FBL3
= 3.6V
V
ENx
= AGND
V
IN
rising
V
IN
falling
Hysteresis
100
Typ
Max
5.5
200
1.0
2.6
Units
V
μA
μA
V
V
mV
MHz
μs
V
%
%
%
V
V
%
%/V
μA
μA
A
mΩ
mΩ
μs
V
%
%
%
V
V
%
%/V
μA
μA
A
mΩ
mΩ
μs
Power Supply
Input Voltage Range
V
IN
I
Q
Quiescent Current
I
SHDN
Input Shutdown Current
UVLO
Under-Voltage Lockout
1.8
250
1.5
200
0.6
-1.5
-2.5
-3.0
0.591
0.585
V
INB1
+1.5
+2.5
+3.0
0.609
0.615
Oscillator Frequency
F
OSC
t
S,BYP
Bypass Filter Startup Time
V
ENB1
= 3.6V
DC-DC1 (Buck1): 1.2A Step-Down Converter
V
OUT_RANGE
Output Voltage Range
T
A
= 25°C, 20mA Load
V
OUT_ACC
Output Voltage Accuracy
T
A
= -40°C to 85°C, 20mA Load
V
OUT_TOL
Output Voltage Tolerance
0A to 1.2A Load; V
IN
= 2.7V to 5.5V
T
A
= 25°C, 20mA Load
V
FBB1_ACC
Feedback Voltage Accuracy
T
A
= -40°C to 85°C, 20mA Load
ΔV
OUT
/ΔI
OUT
Load Regulation
0A to 1.2A Load
ΔV
OUT
/ΔV
IN
Line Regulation
V
IN
= 2.7V to 5.5V
I
SHDN
Shutdown Current
V
ENB1
= GND
I
LX_LEAK
LX Leakage Current
V
INB1
= 5.5V, V
LX1
= 0V to V
INB1
I
LIM
P-Channel Current Limit
R
DS(ON)H
High Side Switch On-Resistance
Low Side Switch On-Resistance
R
DS(ON)L
t
S
Start-Up Time
Enable to Output Regulation
DC-DC2 (Buck2): 600mA Step-Down Converter
V
OUT_RANGE
Output Voltage Range
T
A
= 25°C, 20mA Load
V
OUT_ACC
Output Voltage Accuracy
T
A
= - 40°C to 85°C, 20mA Load
V
OUT_TOL
Output Voltage Tolerance
0mA to 600mA Load; V
IN
= 2.7V to 5.5V
T
A
= 25°C, 20mA Load
Feedback Voltage Accuracy
SELB2 = '0
T
A
= -40°C to 85°C, 20mA Load
V
FBB2_ACC
T
A
= 25°C, 20mA Load
Feedback Voltage Accuracy
SELB2 = '1'
T
A
= -40°C to 85°C, 20mA Load
ΔV
OUT
/ΔI
OUT
Load Regulation
0mA to 600mA Load
ΔV
OUT
/ΔV
IN
Line Regulation
V
IN
= 2.7V to 5.5V
I
SHDN
Shutdown Current
V
ENB2
= GND
I
LX_LEAK
LX Leakage Current
V
INB2
= 5.5V, V
LX2
= 0 to V
INB2
I
LIM
P-Channel Current Limit
High Side Switch On-Resistance
R
DS(ON)H
R
DS(ON)L
Low Side Switch On-Resistance
t
S
Start-Up Time
Enable to Output Regulation
0.6
0.6
0.4
0.2
1.0
1.0
1.7
145
200
200
0.6
-1.5
-2.5
-3.0
0.591
0.585
0.763
0.756
V
INB2
+1.5
+2.5
+3.0
0.609
0.615
0.787
0.794
0.6
0.6
0.775
0.775
0.2
0.2
1.0
1.0
1.3
230
180
200
1. The AAT2603 is guaranteed to meet performance specification from -40°C to +85°C and is assured by design, characterization and correlation with statistical process controls.
2603.2008.10.1.2
www.analogictech.com
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
