Datasheet
LTC3388-1/LTC3388-3
3
338813f
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for T
A
= 25°C (Note 2). Unless otherwise noted, V
IN
= 5.5V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage Range
l
2.7 20 V
I
Q
V
IN
Quiescent Current When Enabled
UVLO
Sleep
Sleep
Active
V
IN
= 2V
V
IN
= 4V
V
IN
= 20V
I
SW
= 0A (Note 4)
400
720
820
150
600
1100
1200
250
nA
nA
nA
µA
I
Q,STBY
V
IN
Quiescent Current Enabled, in Standby
Sleeping
Not Sleeping
V
IN
= 4V
V
IN
= 4V
720
2000
1100
3000
nA
nA
I
Q,SD
V
IN
Quiescent Current When Disabled V
IN
= 4V
V
IN
= 20V
520
620
800
900
nA
nA
V
UVLO
V
IN
Undervoltage Lockout Threshold V
IN
Rising
V
IN
Falling
l
l
2.15
2.5
2.3
2.65 V
V
V
OUT
Regulated Output Voltage (LTC3388-1) 1.2V Output Selected; D1 = 0, D0 = 0
Sleep Threshold
Wake-Up Threshold
1.5V Output Selected; D1 = 0, D0 = 1
Sleep Threshold
Wake-Up Threshold
1.8V Output Selected; D1 = 1, D0 = 0
Sleep Threshold
Wake-Up Threshold
2.5V Output Selected; D1 = 1, D0 = 1
Sleep Threshold
Wake-Up Threshold
l
l
l
l
l
l
l
l
1.140
1.440
1.737
2.400
1.208
1.192
1.508
1.492
1.808
1.792
2.508
2.492
1.260
1.560
1.863
2.600
V
V
V
V
V
V
V
V
V
OUT
Regulated Output Voltage (LTC3388-3) 2.8V Output Selected; D1 = 0, D0 = 0
Sleep Threshold
Wake-Up Threshold
3.0V Output Selected; D1 = 0, D0 = 1
Sleep Threshold
Wake-Up Threshold
3.3V Output Selected; D1 = 1, D0 = 0
Sleep Threshold
Wake-Up Threshold
5.0V Output Selected; D1 = 1, D0 = 1
Sleep Threshold
Wake-Up Threshold
l
l
l
l
l
l
l
l
2.688
2.895
3.201
4.820
2.816
2.784
3.016
2.984
3.316
3.284
5.016
4.984
2.912
3.105
3.399
5.180
V
V
V
V
V
V
V
V
PGOOD Threshold As a Percentage of the Selected V
OUT
83 92 %
V
OL, PGOOD
PGOOD Output Low Voltage 100µA Into Pin
l
0.2 V
I
VOUT
Output Quiescent Current LTC3388-1: V
OUT
= 2.5V
LTC3388-3: V
OUT
= 5.0V
60
120
nA
nA
I
PEAK
PMOS Switch Peak Current
l
100 150 210 mA
I
OUT
Available Output Current
l
50 mA
R
P, BUCK
PMOS Switch On-Resistance 1.1
R
N, BUCK
NMOS Switch On-Resistance 1.3
Maximum Duty Cycle
l
100 %