Datasheet

LTC3560
5
3560fb
TYPICAL PERFORMANCE CHARACTERISTICS
Load Step Load Step Load Step
Burst Mode Operation Pulse-Skipping Mode Operation Start-Up from Shutdown
Dynamic Supply Current
vs Temperature Switch Leakage vs Temperature Switch Leakage vs Input Voltage
(From Figure 1a Except for the Resistive Divider Resistor Values)
TEMPERATURE (°C)
–50
DYNAMIC SUPPLY CURRENT (µA)
200
250
300
25 75
3560 G13
150
100
–25 0
50 100 125
50
0
V
IN
= 3.6V
V
OUT
= 1.2V
I
LOAD
= 0A
PULSE SKIPPING MODE
Burst Mode OPERATION
TEMPERATURE (°C)
–50
80
100
140
25 75
3560 G14
60
40
–25 0
50 100 125
20
0
120
SWITCH LEAKAGE (nA)
SYNCHRONOUS
SWITCH
MAIN SWITCH
INPUT VOLTAGE (V)
0
0
SWITCH LEAKAGE (pA)
200
400
600
1
2
34
3560 G15
5
800
1000
100
300
500
700
900
6
SYNCHRONOUS
SWITCH
MAIN SWITCH
RUN = 0V
SW
2V/DIV
V
OUT
20mV/DIV
AC COUPLED
I
L
200mA/DIV
2µs/DIV
3560 G16
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 25mA
SW
2V/DIV
V
OUT
20mV/DIV
AC COUPLED
I
L
200mA/DIV
500ns/DIV
3560 G17
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 25mA
RUN
2V/DIV
V
OUT
1V/DIV
I
L
500mA/DIV
500µs/DIV
3560 G18
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 800mA
V
OUT
200mV/DIV
AC COUPLED
I
L
1A/DIV
I
LOAD
1A/DIV
20µs/DIV
3560 G19
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0A TO 800mA
PULSE SKIPPING MODE
V
OUT
200mV/DIV
AC COUPLED
I
L
1A/DIV
I
LOAD
1A/DIV
20µs/DIV
3560 G20
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA TO 800mA
PULSE SKIPPING MODE
V
OUT
200mV/DIV
AC COUPLED
I
L
1A/DIV
I
LOAD
1A/DIV
20µs/DIV
3560 G21
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 100mA TO 800mA
PULSE SKIPPING MODE