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| AAT2500 Datasheet, PDF (5/26 Pages) Advanced Analogic Technologies – 1MHz Step-Down Converter/LDO Regulator | |||
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AAT2500
1MHz Step-Down Converter/LDO Regulator
Electrical Characteristics1
Symbol Description
Conditions
Buck Converter Typical values are TA = 25°C, VIN = VCC = Vp = 3.6V.
VIN
Input Voltage
VIN Rising
VUVLO
UVLO Threshold
Hysteresis
VIN Falling
VOUT
Output Voltage Tolerance
IOUT = 0 to 400mA,
VIN = 2.7V to 5.5V
VOUT
Output Voltage Range
Fixed Output Version
Adjustable Output Version2
IQBUCK
Step-Down Converter
Quiescent Current
ENLDO = GND, No Load,
0.6V Adjustable Model
ISHDN
ILIM
RDS(ON)H
Shutdown Current
P-Channel Current Limit
High Side Switch On
Resistance
EN = SGND = PGND, ENLDO = GND
RDS(ON)L
Low Side Switch On
Resistance
ILXLK
LX Leakage Current
VIN = 5.5V, VLX = 0 - VIN
EN = SGND = PGND
VLinereg
VFB
Line Regulation
FB Threshold Voltage
Accuracy
VIN = 2.7V to 5.5V
0.6V Output, No Load, TA = 25°C
IFB
RFB
FOSC
TSD
FB Leakage Current
FB Impedance
Oscillator Frequency
Over-Temperature Shutdown
Threshold
0.6V Output
>0.6V Output
TA = 25°C
THYS
Over-Temperature Shutdown
Hysteresis
Logic Signals
VEN(L)
VEN(H)
IEN(H)
Enable Threshold Low
Enable Threshold High
Leakage Current
Min Typ Max Units
2.7
5.5
V
2.6
V
100
mV
1.8
V
-3.0
+3.0 %
0.6
0.6
4.0
2.5
V
25 50
µA
1.0 µA
600
mA
0.45
Ω
0.4
Ω
1.0 µA
0.2 %/V
597 600 615 mV
0.2 µA
250
kΩ
0.7 1.0 1.5 MHz
140
°C
15
°C
0.6
V
1.5
V
1.0
1.0 µA
1. The AAT2500 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.
2500.2006.05.1.16
5
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