LTC3568_15 Datasheet, PDF (5/18 Pages) Linear Technology – 1.8A, 4MHz, Synchronous Step-Down DC/DC Converter

Typical Performance Characteristics
LTC3568
Frequency Variation
vs Temperature
10
8
6
4
2
0
–2
–4
–6
–8
–10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3568 G10
Efficiency vs Frequency
100
V_IN = 3.3V
V_OUT = 2.5V
I_OUT = 500mA
T_A = 25°C
95
90
85
0
1
2
3
FREQUENCY (MHz)
4
3568 G11
R_DS(ON) vs V_IN
120
T_A = 25°C
115
110
SYNCHRONOUS SWITCH
105
MAIN SWITCH
100
95
90
2.5 3 3.5 4 4.5 5 5.5 6
V_IN (V)
3568 G12
R_DS(ON) vs Temperature
160
150
140
V_IN = 2.5V
130
120
V_IN = 3.3V
110
100
V_IN = 5V
90
80
70
60
–50 –25
MAIN SWITCH
SYNCHRONOUS SWITCH
0 25 50 75
TEMPERATURE (°C)
100 125
3568 G13
3568fa