Datasheet
LTC3606B
4
3606bfb
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Switch Leakage vs Input Voltage
Pulse-Skipping Mode Operation Effi ciency vs Input Voltage
Regulated Voltage vs Temperature
Oscillator Frequency
vs Temperature
Supply Current vs Temperature
Switch On-Resistance
vs Input Voltage
Effi ciency vs Load Current
V
IN
= 5V
V
OUT
= 3.3V
I
LOAD
= 5mA
3606B G01
SW
2V/DIV
I
L
100mA/DIV
V
OUT
50mV/DIV
AC-
COUPLED
5µs/DIV
V
IN
(V)
V
OUT
= 3.3V
3.5
EFFICIENCY (%)
100
90
40
20
50
60
70
80
30
10
0
4.5
3606B G03
5.545
I
OUT
= 10mA
I
OUT
= 1mA
I
OUT
= 0.1mA
I
OUT
= 100mA
I
OUT
= 400mA
I
OUT
= 800mA
TEMPERATURE (°C)
–50
V
FB
ERROR (%)
1.5
1.0
–1.0
–0.5
0
0.5
–1.5
7550250
3606B G04
125–25 100
TEMPERATURE (°C)
–50
FREQUENCY (MHz)
2.5
2.4
1.9
2.0
2.2
2.1
2.3
1.8
7550250
3606B G05
125–25 100
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
TEMPERATURE (°C)
–50
SUPPLY CURRENT (µA)
550
500
250
300
400
350
450
200
7550250
3606B G02
125–25 100
V
IN
= 2.7V
V
IN
= 5.5V
RUN = V
IN
I
LOAD
= 0A
V
IN
(V)
2.5
LEAKAGE CURRENT (pA)
1000
800
400
200
600
0
54.543.5
3606B G06
5.53
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
(V)
2.5
R
DS(ON)
(mΩ)
600
500
300
400
200
54.543.5
3606B G07
5.53
MAIN SWITCH
SYNCHRONOUS SWITCH
TEMPERATURE (°C)
–50 –25
MAIN PFET R
DS(ON)
(Ω)
SYNCHRONOUS NFET R
DS(ON)
(Ω)
0.5
0.4
0.2
0.1
0
0.3
–0.1
0.7
0.6
0.4
0.3
0.2
0.5
0.1
100755025
3606B G09
1250
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
Switch On-Resistance
vs Temperature
OUTPUT CURRENT (A)
EFFICIENCY (%)
3606B G11
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.1 10.010.001
V
OUT
= 3.3V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V