PRODUCT DATASHEET
AAT2503178
SystemPowerTM
Adjustable 3-Channel Regulator
Electrical Characteristics (continued)1
VIN = 3.6V; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol Description
Conditions
Min
Typ
Max
Units
Step-Down Converter; IOUT = 800mA
2.7
5.5
1.8
V
V
VIN
Input Voltage
VIN Rising
Hysteresis
VIN Falling
IOUT = 0 to 800mA; VIN = 2.7V to 5.5V
250
0.9
mV
V
%
V
UVLO
Under-Voltage Lockout Voltage
1.5
-3.0
0.9
VOUT
VOUT
VFB
ISHDN
ILX_LEAK
IFB
ILIM
RDS(ON)H
RDS(ON)L
Output Voltage Tolerance
VOUT Programmable Range
Feedback Threshold Voltage
Shutdown Current
LX Leakage Current
Feedback Leakage
Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
3.0
VIN
0.909
1.0
1.0
0.2
0.891
V
EN = GND
VIN = 5.5, VLX = 0 to VIN
VFB = 1.0V
μA
μA
μA
A
mΩ
mΩ
%
1.2
400
300
0.5
ΔVOUT/VOUT Load Regulation
ILOAD = 0 to 800mA
ΔVOUT
VOUT*ΔVIN
/
Line Regulation
0.2
%/V
FOSC
TSD
THYS
VEN(L)
VEN(H)
IEN
Oscillator Frequency
1.6
2.0
140
15
2.4
0.6
MHz
°C
°C
V
V
μA
V
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
EN Input Leakage
1.4
-1.0
VEN = 5V, VIN = 5V
1.0
VIN · 0.4
VMODE/SYNC(L) Enable Threshold Low
VMODE/SYNC(H) Enable Threshold High
IMODE/SYNC
VIN · 0.7
-1.0
V
μA
Input Low Current
1.0
1. The AAT2503 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.
w w w . a n a l o g i c t e c h . c o m
2503.2008.02.1.4
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