AAT1142 Datasheet, PDF (4/22 Pages) Advanced Analogic Technologies – 800mA Voltage-Scaling Step-Down Converter

AAT1142
800mA Voltage-Scaling Step-Down Converter
Electrical Characteristics¹
L = 2.2µH, C_IN = C_OUT = 10µF, V_IN = 3.6V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are
at T_A = 25°C.
Symbol Description
Step-Down Converter
V_IN
Input Voltage
V_UVLO
UVLO Threshold
V_OUT
V_OUT
V_SLEW
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
I_LXLEAK
ΔV_OUT/
V_OUT*ΔV_IN
R_OUT
T_S
F_OSC
F_SYNC
T_SD
T_HYS
Output Voltage Tolerance
V_OUT Programmable Range
Output Voltage Programming
Slew Rate
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
Line Regulation
Output Impedance
Start-Up Time
Oscillator Frequency
SYNC Frequency Range
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Conditions
V_IN Rising
Hysteresis
V_IN Falling
I_OUT = 0mA to 800mA,
V_IN = 2.7V to 5.5V
C_OUT = 10µF
No Load
EN/SET = AGND = PGND
V_IN = 5.5V, V_LX = 0V to V_IN
V_IN = 2.7V to 5.5V
From Enable to Output Regulation
Min
2.7
2.0
-3.0
0.6
250
1.0
Typ
250
10
35
1.0
0.29
0.24
0.2
100
2.2
140
15
Max Units
5.5 V
2.7 V
mV
V
3.0 %
2.0 V
mV/µs
70 µA
1.0 µA
A
Ω
Ω
1
µA
%/V
kΩ
µs
MHz
3.0 MHz
°C
°C
1. The AAT1142 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
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1142.2006.07.1.0