PRODUCT DATASHEET
AAT1141
SwitchRegTM
FastTransient 600mA Step-Down Converter
Electrical Characteristics1
TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C, VIN = 3.6V.
Symbol Description
Step-Down Converter
Conditions
Min
Typ Max Units
VIN
Input Voltage
2.7
5.5
2.7
V
V
VIN Rising
VUVLO
UVLO Threshold
Hysteresis
VIN Falling
IOUT = 0 to 600mA, VIN = 2.7V to 5.5V
100
35
mV
V
%
1.8
-3.5
0.6
VOUT
VOUT
IQ
ISHDN
ILIM
RDS(ON)H
RDS(ON)L
ILXLEAK
ΔVLinereg
VOUT
IOUT
ROUT
TS
FOSC
TSD
THYS
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
+3.5
VIN
70
V
No Load, 0.6V Adjustable Version
EN = AGND = PGND
μA
μA
mA
Ω
Shutdown Current
1.0
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
Line Regulation
Out Threshold Voltage Accuracy
Out Leakage Current
Out Impedance
Start-Up Time
Oscillator Frequency
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
800
0.35
0.30
Ω
VIN = 5.5V, VLX = 0 to VIN, EN = GND
VIN = 2.7V to 5.5V
0.6V Output, No Load, TA = 25°C
0.6V Output
>0.6V Output
From Enable to Output Regulation
TA = 25°C
1
μA
%/V
mV
μA
kΩ
μs
MHz
°C
°C
0.1
600
588
250
1.2
612
0.2
150
2.0
140
15
2.6
EN
VEN(L)
VEN(H)
IEN
Enable Threshold Low
Enable Threshold High
Input Low Current
0.6
1.0
V
V
μA
1.4
-1.0
VIN = VOUT = 5.5V
1. The AAT1141 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.
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1141.2008.07.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
