Datasheet

LTC3619B
4
3619bfb
Typical perForMance characTerisTics
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Switch Leakage vs Input Voltage
Pulse-Skipping Mode Operation Efficiency vs Input Voltage
Regulated Voltage vs Temperature
Oscillator Frequency
vs Temperature
Supply Current vs Temperature
Switch On-Resistance
vs Input Voltage
Switch On-Resistance
vs Temperature, Channel 1
V
IN
= 5V
V
OUT
= 3.3V
I
LOAD
= 5mA
3619B G01
SW
2V/DIV
I
L
100mA/DIV
V
OUT
50mV/DIV
AC-
COUPLED
5µs/DIV
V
IN
(V)
V
OUT
= 3.3V
CHANNEL 2
3.5
EFFICIENCY (%)
100
90
40
20
50
60
70
80
30
10
0
4.5
3619B G03
5.54 5
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
3619B 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
3619B 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)
900
800
300
400
600
500
700
200
7550250
3619B G02
125–25 100
V
IN
= 2.7V
V
IN
= 5.5V
RUN1 = RUN2 = V
IN
I
LOAD
= 0A
V
IN
(V)
2.5
LEAKAGE CURRENT (pA)
1000
800
400
200
600
0
54.543.5
3619B G06
5.53
MAIN SWITCH
SYNCHRONOUS SWITCH
CHANNEL 1
CHANNEL 2
V
IN
(V)
2.5
R
DS(ON)
(mΩ)
650
550
350
450
250
54.543.5
3619B G07
5.53
MAIN SWITCH
SYNCHRONOUS SWITCH
CHANNEL 1
CHANNEL 2
TEMPERATURE (°C)
–50 –25
R
DS(ON)
(Ω)
0.7
0.6
0.4
0.3
0.5
0.2
100755025
3619B G08
1250
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
TEMPERATURE (°C)
–50 –25
PFET R
DS(ON)
(Ω)
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
3619B G09
1250
MAIN SWITCH
SYNCHRONOUS SWITCH
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
Switch On-Resistance
vs Temperature, Channel 2