LTC3388-3 Linear Technology, LTC3388-3 Datasheet - Page 5

• Manufacturer Part Number: LTC3388-3
• Description: 20V High Efficiency Nanopower Step-Down Regulator
• Manufacturer: Linear Technology

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