LTC3565_1 Datasheet, PDF (5/22 Pages) Linear Technology – 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter

LTC3565
Typical Performance Characteristics T_J = 25°C, V_IN = 3.6V, f_O = 1MHz, unless
otherwise noted.
Frequency Variation vs Input
Voltage
6
R_DS(ON) vs Input Voltage
0.25
R_DS(ON) vs Temperature
0.30
4
2
0
–2
–4
–6
–8
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
3565 G10
0.20
0.15
0.10
0.05
MAIN SWITCH
SYNCHRONOUS SWITCH
0.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
3565 G11
0.25
0.20
0.15
0.10
0.05
0.0
–50 –25
MAIN SWITCH
SYNCHRONOUS SWITCH
0 25 50 75
TEMPERATURE (°C)
100 125
3565 G12
Dynamic Supply Current vs Input
Voltage
100
10
FORCED CONTINUOUS
1
PULSE SKIP
0.1 ^{Burst Mode}
OPERATION
0.01
V_OUT = 1.8V
I_LOAD = 0A
0.001
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
3565 G13
Dynamic Supply Current vs
Temperature
100
10
FORCED CONTINUOUS
1
PULSE SKIP
0.1 ^{Burst Mode}
OPERATION
0.01
0.001
–50 –25
V_OUT = 1.8V
I_LOAD = 0A
0 25 50 75
TEMPERATURE (°C)
100 125
3565 G14
Switch Leakage vs Input Voltage
2500
2000
1500
MAIN SWITCH
1000
SYNCHRONOUS SWITCH
500
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
3565 G15
3565fa