AAT1161 Datasheet, PDF (4/18 Pages) Advanced Analogic Technologies – 13.2V Input, 3A Step-Down Converter

SwitchReg^TM
PRODUCT DATASHEET
AAT1161
13.2V Input, 3A Step-Down Converter
Electrical Characteristics
4.0V < V_IN < 13.2V. C_IN= 22µF, C_OUT= 66µF; L= 2.2µH or 3.8µH, T_A= -40 to +85°C unless otherwise noted. Typical val-
ues are at T_A= 25°C.
Symbol
V_IN
V_UVLO
I_Q
I_SHDN
V_OUT
V_OUT
∆V_LINEREG/
∆V_IN
∆V_LOADREG
V_FB
I_FBLEAK
F_OSC
T_S
DC
T_ON
T_SS
R_DS(ON)H
η
I_LIM
I_LXLEAK
T_SD
T_HYS
V_ILEN
V_IHEN
I_EN
Description
Input Voltage Range
Input Under-Voltage Lockout
Supply Current
Shutdown Current
Conditions
Rising
Hysteresis
No Load
V_EN = GND
Output Voltage Range
Output Voltage Accuracy
Line Regulation
I_OUT = 0A to 3A
V_IN = 4.5V to 13.2V
Load Regulation
Feedback Reference Voltage (adjustable
version)
FB Leakage Current
Oscillator Frequency
Start-Up Time
Foldback Frequency
Maximum Duty Cycle
Minimum Turn-On Time
Soft-Start Time
P-Channel On Resistance
Efficiency
PMOS Current Limit
LX Leakage Current
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
EN Logic Low Input Threshold
EN Logic High Input Threshold
EN Input Current
V_IN = 12V, V_OUT = 5V, I_OUT = 0A to 3A
No Load, T_A = 25°C
V_OUT = 1.2V
Adjustable Version
Fixed Version
I_OUT = 3A, V_OUT = 5V
V_IN = 12V
V_IN = 6V
V_IN = 12V, V_OUT = 5V, I_OUT = 3A
V_IN = 13.2V, V_LX = 0 to V_IN
V_EN = 0V, V_EN = 13.2V
Min
4.0
0.6
-2.5
0.59
0.6
4.0
1.4
-1.0
Typ
0.3
150
0.023
0.4
0.60
2
0.8
2
200
100
2
0.12
0.15
90
6.0
140
25
Max
13.2
4.0
300
1
0.94
V_IN
2.5
0.61
0.2
1
94
1
0.4
1.0
Units
V
V
µA
µA
V
%
%/V
%
V
µA
MHz
ms
kHz
%
ns
ms
Ω
%
A
µA
°C
°C
V
V
µA
1. The AAT1161 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.
4
www.analogictech.com
1161.2008.03.1.0