Datasheet

LTC3809-1
5
38091fc
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.18k
FIGURE 8 CIRCUIT
38091 G09
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.18k
FIGURE 8 CIRCUIT
38091 G10
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.69k
FIGURE 8 CIRCUIT
38091 G11
TEMPERATURE (°C)
–60
0.594
FEEDBACK VOLTAGE (V)
0.596
0.598
0.600
0.602
–20 20
60
100
38091 G012
0.604
0.606
–40 0
40
80
TEMPERATURE (°C)
–60
2.15
2.20
2.25
INPUT VOLTAGE (V)
2.30
2.35
2.40
2.45
–20 20
60
100
38091 G13
2.50
2.55
–40 0
40
80
V
IN
RISING
V
IN
FALLING
TEMPERATURE (°C)
–60
1.00
RUN VOLTAGE (V)
1.05
–20 20
60
100
38091 G14
1.15
1.10
1.20
–40 0
40
80
TEMPER
–60
115
MAXIMUM CURRENT SENSE THRESHOLD (mV)
120
125
130
–20 20
60
100
38091 G15
ATURE (°C)
135
–40 0
40
80
IPRG = FLOAT
TEMPERATURE (°C)
–60
0.94
TRACK/SS START-UP CURRENT (μA)
–20 20
60
100
38091 G16
0.96
0.98
1.04
1.02
1.00
–40 0
40
80
TRACK/SS = 0V
Regulated Feedback Voltage
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Maximum Current Sense
Threshold vs Temperature
TRACK/SS Start-Up Current
vs Temperature
Start-Up with Coincident Tracking
(V
OUT
= 0V at 0s)
Start-Up with Coincident Tracking
(V
OUT
= 0.8V at 0s)
Start-Up with Ratiometric Tracking
(V
OUT
= 0V at 0s)
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.