Datasheet
LTC3588-1
3
35881fa
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
junction temperature range, otherwise specifi cations are for T
A
= 25°C. (Note 2) V
IN
= 5.5V unless otherwise specifi ed.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage Range Low Impedance Source on V
IN
l
18.0 V
I
VIN
V
IN
Quiescent Current
UVLO
Buck Enabled, Sleeping
Buck Enabled, Sleeping
Buck Enabled, Not Sleeping
V
IN
= 2.5V, Not PGOOD
V
IN
= 4.5V
V
IN
= 18V
I
SW
= 0A (Note 4)
450
950
1.7
150
700
1500
2.5
250
nA
nA
µA
µA
V
UVLO
V
IN
Undervoltage Lockout Threshold V
IN
Rising
1.8V Output Selected; D1 = 0, D0 = 0
2.5V Output Selected; D1 = 0, D0 = 1
3.3V Output Selected; D1 = 1, D0 = 0
3.6V Output Selected; D1 = 1, D0 = 1
l
l
l
l
3.77
3.77
4.73
4.73
4.04
4.04
5.05
5.05
4.30
4.30
5.37
5.37
V
V
V
V
V
IN
Falling
1.8V Output Selected; D1 = 0, D0 = 0
2.5V Output Selected; D1 = 0, D0 = 1
3.3V Output Selected; D1 = 1, D0 = 0
3.6V Output Selected; D1 = 1, D0 = 1
l
l
l
l
2.66
2.66
3.42
3.75
2.87
2.87
3.67
4.02
3.08
3.08
3.91
4.28
V
V
V
V
V
SHUNT
V
IN
Shunt Regulator Voltage I
VIN
= 1mA 19.0 20.0 21.0 V
I
SHUNT
Maximum Protective Shunt Current 1ms Duration 25 mA
Internal Bridge Rectifi er Loss
(|V
PZ1
– V
PZ2
| – V
IN
)
I
BRIDGE
= 10µA 350 400 450 mV
Internal Bridge Rectifi er Reverse
Leakage Current
V
REVERSE
= 18V 20 nA
Internal Bridge Rectifi er Reverse
Breakdown Voltage
I
REVERSE
= 1µA V
SHUNT
30 V
V
OUT
Regulated Output Voltage 1.8V Output Selected
Sleep Threshold
Wake-Up Threshold
2.5V Output Selected
Sleep Threshold
Wake-Up Threshold
3.3V Output Selected
Sleep Threshold
Wake-Up Threshold
3.6V Output Selected
Sleep Threshold
Wake-Up Threshold
l
l
l
l
l
l
l
l
1.710
2.425
3.201
3.492
1.812
1.788
2.512
2.488
3.312
3.288
3.612
3.588
1.890
2.575
3.399
3.708
V
V
V
V
V
V
V
V
PGOOD Falling Threshold As a Percentage of the Selected V
OUT
83 92 %
I
VOUT
Output Quiescent Current V
OUT
= 3.6V 89 150 nA
I
PEAK
Buck Peak Switch Current 200 260 350 mA
I
BUCK
Available Buck Output Current 100 mA
R
P
Buck PMOS Switch On-Resistance 1.1 Ω
R
N
Buck NMOS Switch On-Resistance 1.3 Ω
Max Buck Duty Cycle
l
100 %
V
IH(D0, D1)
D0/D1 Input High Voltage
l
1.2 V
V
IL(D0, D1)
D0/D1 Input Low Voltage
l
0.4 V
I
IH(D0, D1)
D0/D1 Input High Current 10 nA
I
IL(D0, D1)
D0/D1 Input Low Current 10 nA