AAT1162_08 Datasheet, PDF (4/18 Pages) Advanced Analogic Technologies – 12V, 1.5A Step-Down DC/DC Converter

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PRODUCT DATASHEET
AAT1162
12V, 1.5A Step-Down DC/DC Converter
Electrical Characteristics¹
4.0V < V_IN < 13.2V. C_IN = C_OUT = 22μF; L = 2.2 or 3.8μH, T_A = -40°C to +85°C, unless otherwise noted. Typical values
are at T_A = 25°C.
Symbol
V_IN
V_UVLO
I_Q
I_SHDN
V_OUT
V_OUT
ΔV_OUT/
V_OUT/ΔV_IN
ΔV_OUT/
I_OUT
V_FB
I_FBLEAK
F_OSC
DC
T_ON
T_S
R_DS(ON)H
R_DS(ON)L
η
I_LIM
I_LXLEAK
T_SD
T_HYS
V_IL
V_IH
I_EN
Description
Input Voltage Range
Input Under-Voltage Lockout
Supply Current
Shutdown Current
Output Voltage Range
Output Voltage Accuracy
Line Regulation
Load Regulation
Feedback Reference Voltage (adjustable version)
FB Leakage Current
PWM Oscillator Frequency
Foldback Frequency
Maximum Duty Cycle
Minimum Turn-On Time
Soft-Start Time
P-Channel On Resistance
N-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
Conditions
Rising
Hysteresis
No Load
V_EN = GND
I_OUT = 0A to 1.5A
V_IN = 4.5V to 13.2V
V_IN = 12V, V_OUT = 5V, I_OUT = 0A to 1.5A
No Load, T_A = 25°C
V_OUT = 1.2V
Adjustable Version
Fixed Version
V_IN = 12V
V_IN = 6V
V_IN = 12V
V_IN = 6V
V_IN = 12V, V_OUT = 5V, I_OUT = 1.5A
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
200
100
200
0.12
0.15
0.06
0.08
90
6.0
140
25
Max
13.2
4.0
300
1
0.94
V_IN
2.5
0.100
0.61
0.2
1
94
1
0.4
1.0
Units
V
V
μA
μA
V
%
%/V
%
V
μA
MHz
kHz
%
ns
ms
Ω
Ω
%
A
μA
°C
°C
V
V
μA
1. The AAT1162 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
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1162.2008.01.1.3