AAT1143 Datasheet, PDF (4/20 Pages) Advanced Analogic Technologies – 1MHz 400mA Step-Down Converter

AAT1143
1MHz 400mA Step-Down Converter
Electrical Characteristics¹
T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C, V_IN = 3.6V.
Symbol Description
Step-Down Converter
V_IN
Input Voltage
V_UVLO
UVLO Threshold
V_OUT
V_OUT
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
I_LXLEAK
∆V_Linereg
V_OUT
I_OUT
R_OUT
F_OSC
T_SD
T_HYS
EN
V_EN(L)
V_EN(H)
I_EN
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
Line Regulation
Out Threshold Voltage Accuracy
Out Leakage Current
Out Impedance
Oscillator Frequency
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
Min
2.7
V_IN Rising
Hysteresis
V_IN Falling
1.8
I_OUT = 0 to 400mA,
-3.0
V_IN = 2.7V to 5.5V
Fixed Output Version
0.6
Adjustable Output Version² 0.6
No Load, 0.6V Adjustable
Version
EN = AGND = PGND
600
V_IN = 5.5V, V_LX = 0 to V_IN,
EN = GND
V_IN = 2.7V to 5.5V
0.6V Output, No Load
597
T_A = 25°C
0.6V Output
>0.6V Output
250
T_A = 25°C
0.7
1.4
V_IN = V_FB = 5.5V
-1.0
Typ
100
25
0.45
0.40
600
1.0
140
15
Max Units
5.5 V
2.6 V
mV
V
+3.0 %
4.0
V
2.5
50 µA
1.0 µA
mA
Ω
Ω
1
µA
0.2 %/V
615 mV
0.2 µA
kΩ
1.5 MHz
°C
°C
0.6 V
V
1.0 µA
1. The AAT1143 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.
2. For adjustable version with higher than 2.5V output, please consult your AnalogicTech representative.
4
1143.2005.09.1.7