AAT2514 Datasheet, PDF (6/16 Pages) Advanced Analogic Technologies – Dual Channel 600mA Step-Down Converter

AAT2514
Dual Channel 600mA Step-Down Converter
Typical Characteristics
Frequency vs. Input Voltage
(V_IN = 3.6V; V_OUT = 1.8V; I_LOAD = 150mA; L = 2.2µH)
1.58
1.56
1.54
1.52
1.50
1.48
1.46
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Frequency vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V; I_LOAD = 150mA; L = 2.2µH)
1.8
1.7
1.6
1.5
1.4
1.3
1.2
-40 -25 -10
5
20
35
50
65
80
Temperature (°C)
R_DS(ON) vs. Input Voltage
(T_A = 25ºC)
0.45
0.40
0.35
Main switch
0.30
0.25
Synchronous switch
0.20
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6 6.0
Input Voltage (V)
V_FB vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V; I_LOAD = 0mA)
0.612
0.609
0.606
0.603
0.600
0.597
0.594
0.591
0.588
-45 -30 -15
0
15 30 45 60 75 90
Temperature (°C)
Load Transient Response
(Light Load Mode to PWM Mode; L = 2.2µH;
C_IN = 10µF; C_OUT = 10µF; V_IN = 3.6V; V_OUT = 1.8V)
V_SW
(2V/div)
V_OUT
(200mV/div)
I_OUT
(400mA/div)
Load Transient Response
(PWM Mode Only; I_LOAD = 180mA to 400mA; L = 2.2µH;
C_IN = 10µF; C_OUT = 10µF; V_IN = 3.6V; V_OUT = 1.8V)
V_SW
(2V/div)
V_OUT
(200mV/div)
I_OUT
(500mA/div)
Time (20µs/div)
Time (20µs/div)
6
2514.2007.06.1.0