AAT1146IJS-1.875-T1 View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT1146IJS-1.875-T1' PDF : 20 Pages View PDF
SwitchRegTM
PRODUCT DATASHEET
AAT1146
Fast Transient 400mA 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
VIN
Input Voltage
VUVLO
UVLO Threshold
VOUT
VOUT
IQ
ISHDN
ILIM
RDS(ON)H
RDS(ON)L
ILXLEAK
ΔVLinereg
VOUT
IOUT
ROUT
TS
FOSC
TSD
THYS
EN
VEN(L)
VEN(H)
IEN
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
Out Threshold Voltage Accuracy
Out Leakage Current
Out Impedance
Start-Up Time
Oscillator Frequency
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
VIN Rising
Hysteresis
VIN Falling
IOUT = 0 to 400mA, VIN = 2.7V to 5.5V
No Load, 0.6V Adjustable Version
EN = AGND = PGND
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
>1.0V Output2
From Enable to Output Regulation
TA = 25°C
VIN = VOUT = 5.5V
Min Typ Max Units
2.7
1.8
-3.0
0.6
600
591
250
1.0
100
27
0.45
0.40
0.1
600
150
1.4
140
15
5.5
2.7
+3.0
VIN
70
1.0
1
609
0.2
2.0
V
V
mV
V
%
V
μA
μA
mA
Ω
Ω
μA
%/V
mV
μA
kΩ
μs
MHz
°C
°C
1.4
-1.0
0.6
V
V
1.0
μA
1. The AAT1146 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.
2. The AAT1146 fixed output versions have the output set to different voltages.
4
www.analogictech.com
1146.2008.06.1.6
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