AAT2511
Dual 600mA, 1MHz Step-Down DC/DC Converter
Electrical Characteristics
1
T
A
= -40°C to 85°C, unless otherwise noted. Typical values are T
A
= 25°C, V
IN
= 3.6V.
Symbol
V
IN
V
UVLO
V
OUT
V
OUT
I
Q
I
SHDN
I
LIM
R
DS(ON)H
R
DS(ON)L
I
LXLK
∆V
Linereg
V
FB
T
S
F
OSC
T
SD
T
HYS
EN
Description
Input Voltage
UVLO Threshold
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
Line Regulation
FB Threshold Voltage Accuracy
Start-Up Time
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
Min
2.7
Typ
Max
5.5
2.6
Units
V
V
mV
V
%
V
µA
µA
mA
Ω
Ω
µA
%/V
mV
µs
MHz
°C
°C
Step-Down Converter Channels
V
IN
Rising
Hysteresis
V
IN
Falling
I
OUT
= 0 to 400mA, V
IN
= 2.7 - 5.5V
No Load, 0.6V Adjustable Version,
Per Channel
EN = SGND = GND
100
1.8
-3.0
0.6
25
+3.0
4.0
50
1.0
600
0.45
0.4
V
IN
= 5.5V, V
LX
= 0 to V
IN
,
EN = SGND = GND
V
IN
= 2.7V to 5.5V
0.6V Output, No Load, T
A
= 25°C
From Enable to Output Regulation
T
A
= 25°C
1
0.2
615
1.5
597
0.7
600
100
1.0
140
15
V
EN(L)
V
EN(H)
I
EN
0.6
V
IN
= V
FB
= 5.5V
1.4
-1.0
1.0
V
V
µA
1. The AAT2511 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. For adjustable version with higher than 2.5V output, please consult your AnalogicTech representative.
4
2511.2006.02.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
