Datasheet

7
LTC1929/LTC1929-PG
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Current SENSE Pin Input Current
vs Temperature
TEMPERATURE (°C)
–50 –25
25
CURRENT SENSE INPUT CURRENT (µA)
29
35
0
50
75
1929 G20
27
33
31
25
100
125
V
OUT
= 5V
TEMPERATURE (°C)
–50 –25
0
EXTV
CC
SWITCH RESISTANCE (Ω)
4
10
0
50
75
1929 G21
2
8
6
25
100
125
TEMPERATURE (°C)
–50
200
250
350
25 75
1929 G22
150
100
–25 0
50 100 125
50
0
300
FREQUENCY (kHz)
V
FREQSET
= 5V
V
FREQSET
= OPEN
V
FREQSET
= 0V
EXTV
CC
Switch Resistance
vs Temperature
Oscillator Frequency
vs Temperature
Undervoltage Lockout
vs Temperature
TEMPERATURE (°C)
–50
UNDERVOLTAGE LOCKOUT (V)
3.40
3.45
3.50
25 75
1929 G23
3.35
3.30
–25 0
50 100 125
3.25
3.20
V
RUN/SS
Shutdown Latch
Thresholds vs Temperature
TEMPERATURE (°C)
–50 –25
0
SHUTDOWN LATCH THRESHOLDS (V)
0.5
1.5
2.0
2.5
75 10050
4.5
1929 G24
1.0
0 25 125
3.0
3.5
4.0
LATCH ARMING
LATCHOFF
THRESHOLD