PRODUCT DATASHEET
AAT2504178
SystemPower
TM
Electrical Characteristics
1
V
IN
= 3.6V; T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
Description
Conditions
ENA = ENB = EN = V
IN
; I
LOAD
= 0
ENA = ENB = EN = GND
V
IN
Rising
Hysteresis
V
IN
Falling
Adjustable 3-Channel Regulator
Min
Typ
80
Max
145
1.0
2.2
Units
μA
μA
V
mV
V
V
%
V
mV
%/V
V
V
mA
μA
°C
°C
% of V
OUT
% of V
OUT
V
μA
V
%
V
V
μA
μA
μA
A
mΩ
mΩ
%
%/V
MHz
°C
°C
V
V
μA
Bias Power Supply
I
Q
Quiescent Current
I
SHDN
Shutdown Current
UVLO
Under-Voltage Lockout Voltage
250
1.7
1.62
-1.5
-2.5
0.593
5.5
1.5
2.5
0.607
300
0.09
0.6
LDOA, LDOB
V
LDO
Input Voltage
V
OUT
V
FB
V
DO
Output Voltage Tolerance
Feedback Voltage
Dropout Voltage
2, 3
Line Regulation
4
Enable Threshold Low
Enable Threshold High
Output Current
Shutdown Current
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
I
OUT
= 1mA
to 300mA
T
A
= 25°C
T
A
= -40°C to +85°C
0.6
ΔV
LINEREG
/V
IN
V
EN(L)
V
EN(H)
I
OUT
I
SHT
T
SD
T
HYS
LDOA
Power-OK Trip Threshold
V
POK
V
POKHYS
Power-OK Hysteresis
V
POK(LO)
Power-OK Output Voltage Low
I
POK
Power-OK Output Leakage Current
Step-Down Converter
V
IN
Input Voltage
V
OUT
Output Voltage Tolerance
V
OUT
Programmable Range
V
OUT
V
FB
Feedback Threshold Voltage
I
SHDN
Shutdown Current
I
LX_LEAK
LX Leakage Current
I
FB
Feedback Leakage
I
LIM
Current Limit
R
DS(ON)H
High Side Switch On Resistance
R
DS(ON)L
Low Side Switch On Resistance
ΔV
LOADREG
/V
OUT
Load Regulation
ΔV
LINEREG
/V
IN
Line Regulation
Oscillator Frequency
F
OSC
T
SD
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
T
HYS
V
EN(L)
Enable Threshold Low
Enable Threshold High
V
EN(H)
I
EN
EN Input Leakage
I
OUT
= 300mA
V
IN
= V
OUT
+ 1 to 5.0V
1.4
300
V
LDO (MIN)
= 2.5
V
IN
= 5V
1.0
140
15
V
OUT
Rising, T
A
= 25°C
I
SINK
= 1mA
V
POK
<5.5V, V
OUT
in Regulation
80
90
1.0
98
0.4
1.0
I
OUT
= 0 to 800mA; V
IN
= 2.7V to 5.5V
2.7
-3.0
0.9
0.891
0.9
EN = GND
V
IN
= 5.5, V
LX
= 0 - V
IN
V
FB
= 1.0V
280
160
0.2
0.2
2.0
140
15
5.5
3.0
V
IN
0.909
1.0
1.0
0.2
1.2
I
LOAD
= 10 to 800mA
1.6
2.4
0.6
V
EN
= 5V, V
IN
= 5V
1.4
-1.0
1.0
1. The AAT2504 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. V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
3. For V
OUT
< 1.5V, V
DO
= 1.8 - V
OUT
.
4. C
IN
= 10μF.
4
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2504.2008.02.1.2
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