Datasheet

LTC3809
5
3809fc
TYPICAL PERFORMANCE CHARACTERISTICS
Regulated Feedback Voltage
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Maximum Current Sense
Threshold vs Temperature
SYNC/MODE Pull-Down Current
vs Temperature
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs Input Voltage
Shutdown Quiescent Current
vs Input Voltage
Sleep Current vs Input Voltage
T
A
= 25°C unless otherwise noted.
TEMPERATURE (°C)
–60
0.594
FEEDBACK VOLTAGE (V)
0.596
0.598
0.600
0.602
–20 20
60
100
3809 G08
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
3809 G09
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
3809 G10
1.15
1.10
1.20
–40 0
40
80
TEMPERATURE (°C)
–60
115
MAXIMUM CURRENT SENSE THRESHOLD (mV)
120
125
130
–20 20
60
100
3809 G11
135
–40 0
40
80
IPRG = FLOAT
TEMPERATURE (°C)
–60
2.40
2.45
2.50
SYNC/MODE PULL-DOWN CURRENT (μA)
2.55
2.60
2.65
2.70
–20 20
60
100
3809 G12
2.75
2.80
–40 0
40
80
TEMPERATURE (°C)
–60
–10
–8
–6
NORMALIZED FREQUENCY (%)
–4
–2
0
4
–20 20
60
100
3809 G13
8
2
6
10
–40 0
40
80
INPUT VOLTAGE (V)
2
–5
–4
–3
NORMALIZED FREQUENCY SHIFT (%)
–2
–1
0
2
46
8
10
3809 G14
4
1
3
5
35
7
9
INPUT VOLTAGE (V)
2
0
2
SHUTDOWN CURRENT (μA)
4
6
8
12
46
8
10
3809 G15
16
10
14
18
35
7
9
INPUT VOLTAGE (V)
2
70
SLEEP CURRENT (μA)
80
100
46
8
10
3809 G16
120
90
110
130
35
7
9