AAT1157 AAT, AAT1157 Datasheet - Page 4

• Manufacturer Part Number: AAT1157
• Description: DC/DC Converter
• Manufacturer: AAT

Electrical Characteristics
V
1. The AAT1157 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
4
∆V
IN
by design, characterization, and correlation with statistical process controls.
= V
OUT
∆V
V
Symbol
R
R
UVLO(HYS)
OUT
V
(V
I
DS(ON)H
V
DS(ON)L
F
T
CC
SHDN
T
I
V
V
UVLO
V
I
OUT
I
LIM
I
OSC
HYS
IH
OUT
Q
IL
SD
IN
IH
IL
/V
= V
OUT
*∆V
P
IN
= 5V, T
) Line Regulation
Description
Input Voltage Range
Output Voltage Tolerance
Load Regulation
Quiescent Supply Current
Shutdown Current
Current Limit
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
High Side Switch On Resistance
Low Side Switch On Resistance
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
1
Conditions
V
I
V
V
No Load
V
T
V
V
V
V
T
T
T
OUT
A
A
A
A
IN
IN
IN
EN
IN
IN
IN
IN
= 25°C
= 25°C
= 25°C
= 25°C
= V
= 4.2V, I
=2.7 to 5.5V
Rising, V
Falling, V
= V
= V
= 0V, V
= 0 to 1.2A
1MHz 1.2A Buck DC/DC Converter
OUT
FB
FB
= 5.5V
= 0V
+ 0.2 to 5.5V,
IN
LOAD
EN
EN
= 5.5V
= V
= V
= 0 to 1.2A
CC
CC
Min
750
2.7
1.7
1.2
1.4
-4
1000
Typ
±2.5
±0.1
160
250
110
100
140
15
A
= 25°C.
AAT1157
Max
1250
300
150
150
5.5
1.0
2.5
0.6
1.0
1.0
+4
1157.2005.11.1.4
Units
%/V
kHz
mV
mΩ
mΩ
µA
µA
µA
µA
°C
°C
%
%
V
A
V
V
V