AAT2503
Adjustable 3-Channel Regulator
1
Electrical Characteristics (continued)
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
VIN
Input Voltage
2.7
5.5
1.8
V
V
mV
V
VIN Rising
Hysteresis
VIN Falling
UVLO
Under-Voltage Lockout Voltage
250
0.9
1.5
IOUT = 0 to 800mA;
VOUT
Output Voltage Tolerance
-3.0
3.0
ꢀ
VIN = 2.7V to 5.5V
VOUT
VFB
ISHDN
VOUT Programmable Range
Feedback Threshold Voltage
Shutdown Current
LX Leakage Current
Feedback Leakage
0.9
0.891
VIN
0.909
1.0
1.0
0.2
V
V
µA
µA
µA
A
mΩ
mΩ
ꢀ
EN = GND
VIN = 5.5, VLX = 0 to VIN
VFB = 1.0V
ILX LEAK
_
IFB
ILIM
RDS(ON)H
RDS(ON)L
ΔVOUT/VOUT
Current Limit
1.2
400
300
0.5
High Side Switch On Resistance
Low Side Switch On Resistance
Load Regulation
ILOAD = 0 to 800mA
ΔVOUT
VOUT*ΔVIN
/
Line Regulation
0.2
2.0
140
ꢀ/V
MHz
°C
FOSC
Oscillator Frequency
Over-Temperature Shutdown
Threshold
1.6
2.4
TSD
Over-Temperature Shutdown
Hysteresis
THYS
15
°C
VEN(L)
VEN(H)
IEN
Enable Threshold Low
Enable Threshold High
EN Input Leakage
0.6
1.0
V
V
µA
1.4
-1.0
VEN = 5V, VIN = 5V
VIN
0.4
×
VMODE/SYNC(L) Enable Threshold Low
VMODE/SYNC(H) Enable Threshold High
V
VIN
0.7
-1.0
×
V
IMODE/SYNC
Input Low Current
1.0
µA
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 correlation with statistical process controls.
2503.2007.04.1.1
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
