PRODUCT DATASHEET
AAT1130
SwitchReg
TM
Electrical Characteristics
1
V
IN
= 3.6V, C
IN
= C
OUT
= 4.7μF, L = 1μH. T
A
= -40°C to 85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
V
IN
V
OUT
V
UVLO
I
Q
I
SHDN
V
OUT_TOL
(fixed
output version)
V
FB_ACC
I
LIM
R
DS(ON)H
R
DS(ON)L
f
ON
t
OFF(MIN)
I
LXLEAK
I
FBLEAK
t
S
f
S
T
SD
T
HYS
V
EN(L)
V
EN(H)
I
EN
2.5MHz 500mA Step-Down DC/DC Converter
Description
Input Voltage
Output Voltage Range
UVLO Threshold
Quiescent Current
Shutdown Current
Output Voltage Tolerance
Feedback Voltage Accuracy
Valley Current Limit
High Side Switch On-Resistance
Low Side Switch On-Resistance
Switch On-Time
Minimum Off-Time
LX Leakage Current
FB Leakage Current
Startup Time
Switching Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Enable Threshold Low
Enable Threshold High
Enable Pin Current
Conditions
Min
2.7
0.6
Typ
Max
5.5
1.8
2.65
Units
V
V
V
mV
μA
μA
%
V
mA
Ω
Ω
ns
ns
μA
μA
μs
MHz
°C
°C
V
IN
rising
Hysteresis
Not Switching
EN = AGND = PGND
V
IN
= 2.7V to 5.5V, 0 to 500mA Load
T
A
= 25°C, No Load
-4
0.59
550
100
60
90
1.0
4
V
IN
= 3.6V, V
OUT
= 1.2V
V
IN
= 5.5, V
LX
= 0 to V
IN
V
FB
= 5.5V, V
EN
= 0V, Adj Only
From EN Asserted to Output Regulation
V
OUT
= 1.2V, 500mA Load
0.6
650
0.35
0.25
120
75
0.61
1
0.2
150
2.5
140
15
0.6
1.4
-1.0
V
IN
= V
FB
=5.5V
1.0
V
V
μA
1. The AAT1130 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
4
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