Datasheet

LTC3561A
5
3561af
R
DS(ON)
vs Input Voltage
R
DS(ON)
vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
Dynamic Supply Current vs
Input Voltage
Supply Current vs
Temperature Switch Leakage vs Input Voltage
Switch Leakage vs Temperature
Switching Waveforms
T
A
= 25°C, V
IN
= 3.6V, f
O
= 1MHz, unless otherwise noted.
INPUT VOLTAGE (V)
0.25
0.20
0.15
0.10
0.05
0.0
3561A 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
3561A G12
–50 25 75 100 125
–25 0
50
R
DS(ON)
(Ω)
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
(V)
2.5
DYNAMIC SUPPLY CURRENT (μA)
250
260
270
4
5
3561A G13
240
230
220
3 3.5 4.5
280
290
300
5.5
V
OUT
= 1.8V
I
LOAD
= 0A
TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
340
25
3561A G14
280
240
–25 0 50
220
200
360
320
300
260
75 100 125
V
OUT
= 1.8V
I
LOAD
= 0A
INPUT VOLTAGE(V)
2500
2000
1500
1000
500
0
3561A G15
0356
12
4
SWITCH LEAKAGE (pA)
SYNCHRONOUS
SWITCH
MAIN SWITCH
TEMPERATURE (°C)
600
500
400
300
200
100
0
3561A G16
–50 25 75 100 125
–25 0
50
SWITCH LEAKAGE (nA)
SYNCHRONOUS
SWITCH
MAIN SWITCH
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 5mA
SW
2V/DIV
V
OUT
50mV/DIV
AC COUPLED
I
L
200mA/DIV
3561A G18
4μs/DIV
Start-Up from Shutdown
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0A
SHDN/R
T
2V/DIV
V
OUT
1V/DIV
I
L
1A/DIV
3561A G20
200μs/DIV