AAT2120 Datasheet, PDF (4/20 Pages) Advanced Analogic Technologies – 500mA Low Noise Step-Down Converter

AAT2120
500mA Low Noise Step-Down Converter
Electrical Characteristics¹
V_IN = 3.6V, T_A = -40°C to +85°C, unless otherwise noted; typical values are T_A = 25°C.
Symbol
V_IN
V_UVLO
V_OUT
V_OUT
I_Q
I_SHDN
I_LIM
R_DS(ON)H
R_DS(ON)L
ΔV_Linereg/ΔV_IN
V_FB
I_FB
F_OSC
T_S
T_SD
T_HYS
V_EN(L)
V_EN(H)
I_EN
Description
Input Voltage
UVLO Threshold
Output Voltage Tolerance²
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High-Side Switch On Resistance
Low-Side Switch On Resistance
Line Regulation
Feedback Threshold Voltage Accuracy
FB Leakage Current
Oscillator Frequency
Startup Time
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
V_IN Rising
Hysteresis
V_IN Falling
I_OUT = 0 to 500mA,
V_IN = 2.7V to 5.5V
No Load
EN = GND
V_IN = 2.7V to 5.5V
V_IN = 3.6V
V_OUT = 1.0V
From Enable to Output
Regulation
V_IN = V_EN = 5.5V
Min Typ Max Units
2.7
5.5 V
2.3 V
70
mV
1.4
V
-3.0
3.0 %
0.6
0.591
45
700
0.59
0.42
0.2
0.600
1.8
V_IN
85
1.0
0.609
0.2
V
µA
µA
mA
Ω
Ω
%/V
V
µA
MHz
100
µs
105
°C
15
°C
0.6 V
1.4
V
-1.0
1.0 µA
1. The AAT2120 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. Output voltage tolerance is independent of feedback resistor network accuracy.
4
2120.2007.10.1.1