AAT1155 AAT, AAT1155 Datasheet - Page 4

• Manufacturer Part Number: AAT1155
• Description: Step-Down DC-DC Converter
• Manufacturer: AAT

Electrical Characteristics
V
4
∆V
IN
= V
OUT
∆V
V
Symbol
R
UVLO(HYS)
V
OUT
I
V
DS(ON)L
F
T
CC
SHDN
(V
T
I
V
V
V
UVLO
OSC
OUT
I
LIM
HYS
η
Q
SD
IN
IH
IL
OUT
/V
= V
OUT
*∆V
P
= 5V, T
IN
) Load Regulation
Description
Input Voltage Range
Output Voltage Tolerance
Input Low Voltage
Input High Voltage
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Quiescent Supply Current
Shutdown Current
Current Limit
High Side Switch On Resistance
Efficiency
Line Regulation
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
1MHz 2.5A Step-Down DC/DC Converter
Conditions
V
I
V
V
No Load, V
V
T
T
I
I
V
T
OUT
OUT
LOAD
A
A
A
IN
IN
IN
EN
IN
= 25°C
= 25°C
= 25°C
= V
Rising
Falling
= 2.7V to 5.5V
= 0V, V
= 0.5A
= 1.0A
= 0A to 2.5A
OUT
+ 0.2 to 5.5V,
FB
IN
= 5.5V
= 0V
Min Typ Max Units
-2.5
2.7
1.4
1.2
4.4
A
= 25°C.
±2.3
0.75
250
630
140
60
92
15
AAT1155
1
1155.2005.11.1.6
1000
5.5
2.5
0.6
2.5
1.0
MHz
%/V
mΩ
mV
µA
µA
°C
°C
%
%
%
V
V
V
V
A