Datasheet

LTC3388-1/LTC3388-3
5
338813f
TYPICAL PERFORMANCE CHARACTERISTICS
UVLO vs Temperature I
PEAK
vs Temperature
R
P,BUCK
/R
N,BUCK
vs Temperature
Operating Waveforms
1.2V Output vs Temperature
(LTC3388-1)
1.5V Output vs Temperature
(LTC3388-1)
1.8V Output vs Temperature
(LTC3388-1)
2.5V Output vs Temperature
(LTC3388-1)
2.8V Output vs Temperature
(LTC3388-3)
TEMPERATURE (°C)
V
UVLO
(V)
2.8
2.6
2.4
2.2
2.0
338813 G04
50 75 100 125–50 250–25
UVLO RISING
UVLO FALLING
TEMPERATURE (°C)
I
PEAK
(mA)
180
160
170
140
150
130
120
338813 G05
50 75 100 125–50 250–25
TEMPERATURE (°C)
R
DS(ON)
(Ω)
2.0
1.6
1.8
1.2
1.4
1.0
0.8
338813 G06
45 65 85 105 125–55 25–15 5–35
NMOS
PMOS
5µs/DIV
0V
V
OUT
50mV/DIV
AC-COUPLED
V
SW
2V/DIV
V
IN
= 5.5V, V
OUT
= 1.8V
I
LOAD
= 20mA
L = 22µH, C
OUT
= 47µF
INDUCTOR
CURRENT
100mA/DIV
0mA
338813 G07
TEMPERATURE (°C)
V
OUT
(V)
1.24
1.16
1.14
1.18
1.20
1.22
1.10
1.12
1.08
1.06
338813 G08
50 75 100 125–50 250–25
PGOOD FALLING
WAKE-UP THRESHOLD
SLEEP THRESHOLD
TEMPERATURE (°C)
V
OUT
(V)
1.54
1.46
1.50
1.52
1.42
1.38
1.44
1.48
1.40
1.36
1.34
338813 G09
50 75 100 125–50 250–25
PGOOD FALLING
WAKE-UP THRESHOLD
SLEEP THRESHOLD
TEMPERATURE (°C)
V
OUT
(V)
1.85
1.65
1.75
1.80
1.70
1.60
338813 G10
50 75 100 125–50 250–25
PGOOD FALLING
WAKE-UP THRESHOLD
SLEEP THRESHOLD
TEMPERATURE (°C)
V
OUT
(V)
2.55
2.30
2.35
2.45
2.50
2.40
2.25
338813 G11
50 75 100 125–50 250–25
PGOOD FALLING
WAKE-UP THRESHOLD
SLEEP THRESHOLD
TEMPERATURE (°C)
V
OUT
(V)
2.90
2.55
2.60
2.70
2.75
2.80
2.85
2.65
2.50
338813 G12
50 75 100 125–50 250–25
PGOOD FALLING
WAKE-UP THRESHOLD
SLEEP THRESHOLD