AAT2552
Total Power Solution for Portable Applications
Electrical Characteristics
1
V
INB
= 3.6V; T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
Description
Conditions
Min
2.7
V
INB
Rising
Hysteresis
I
OUTB
= 0 to 300mA,
V
INB
= 2.7V to 5.5V
No Load
V
ENB
= GND
300
0.3
0.5
V
INB
= 5.5V, V
LX
= 0 to V
INB
I
OUTB
= 0mA to 300mA
V
INB
= 2.7V to 5.5V
V
INB
= 3.6V
V
OUTB
= 1.0V
From Enable to Output
Regulation
1.0
0.4
0.1
0.6
1.5
120
140
15
0.6
V
INB
= V
ENB
= 5.5V
1.4
-1.0
1.0
250
-3.0
0.6
45
3.0
V
INB
90
1.0
Typ
Max
5.5
2.6
Units
V
V
mV
%
V
µA
µA
mA
Ω
Ω
µA
%
%/V
V
µA
MHz
µs
°C
°C
V
V
µA
Step-Down Converter
V
IN
Input Voltage
V
UVLO
V
OUT
V
OUT
I
Q
I
SHDN
I
LIM
R
DS(ON)H
R
DS(ON)L
I
LXLEAK
ΔV
OUT
/ΔV
OUT
ΔV
Linereg
/ΔV
IN
V
FB
I
FB
F
OSC
T
S
T
SD
T
HYS
V
EN(L)
V
EN(H)
I
EN
UVLO Threshold
Output Voltage Tolerance
2
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High-Side Switch On Resistance
Low-Side Switch On Resistance
LX Leakage Current
Load Regulation
Line Regulation
Feedback Threshold Voltage Accuracy
FB Leakage Current
Oscillator Frequency
Startup Time
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
0.591
0.609
0.2
1. The AAT2552 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. Output voltage tolerance is independent of feedback resistor network accuracy.
4
2552.2007.04.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
