Datasheet

LTC3565
5
3565fc
For more information www.linear.com/LTC3565
Frequency Variation vs Input
Voltage R
DS(ON)
vs Input Voltage R
DS(ON)
vs Temperature
INPUT VOLTAGE (V)
6
4
2
0
–2
–4
–6
–8
3565 G10
2.5 4.0 5.0
5.5
3.0 3.5
4.5
FREQUENCY VARIATION (%)
INPUT VOLTAGE (V)
0.25
0.20
0.15
0.10
0.05
0.0
3565 G11
2.5 4.0 5.0 5.5
3.0 3.5
4.5
R
DS(ON)
(Ω)
MAIN SWITCH
SYNCHRONOUS SWITCH
TEMPERATURE (°C)
0.30
0.25
0.20
0.15
0.10
0.05
0.0
3565 G12
–50 25 75 100 125
–25 0
50
R
DS(ON)
(Ω)
MAIN SWITCH
SYNCHRONOUS SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS
T
J
= 25°C, V
IN
= 3.6V, f
O
= 1MHz, unless
otherwise noted.
Dynamic Supply Current vs Input
Voltage
Dynamic Supply Current vs
Temperature
INPUT VOLTAGE (V)
0.001
3.0 3.5 4.0 4.5 5.0 5.52.5
DYNAMIC SUPPLY CURRENT (mA)
0.1
100
3565 G13
0.01
1
10
FORCED CONTINUOUS
PULSE SKIP
Burst Mode
OPERATION
V
OUT
= 1.8V
I
LOAD
= 0A
TEMPERATURE (°C)
0.001
–25 0 25 50 75 100 125–50
DYNAMIC SUPPLY CURRENT (mA)
0.1
100
3565 G14
0.01
1
10
FORCED CONTINUOUS
PULSE SKIP
Burst Mode
OPERATION
V
OUT
= 1.8V
I
LOAD
= 0A
INPUT VOLTAGE (V)
2500
2000
1500
1000
500
0
3565 G15
0 3 5 6
1 2
4
SWITCH LEAKAGE (pA)
SYNCHRONOUS SWITCH
MAIN SWITCH
Switch Leakage vs Input Voltage
TEMPERATURE (°C)
600
500
400
300
200
100
0
3565 G16
–50 25 75 100 125
–25 0
50
SWITCH LEAKAGE (nA)
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA
SW
2V/DIV
V
OUT
50mV/DIV
AC COUPLED
I
L
200mA/DIV
3565 G17
4µs/DIV
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 5mA
SW
2V/DIV
V
OUT
50mV/DIV
AC COUPLED
I
L
200mA/DIV
3565 G18
4µs/DIV
Switch Leakage vs Temperature
Burst Mode Operation Pulse Skipping Mode