LTC3608 Datasheet, PDF (7/24 Pages) Linear Technology – 18V, 8A Monolithic Synchronous Step-Down DC/DC Converter

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3608
I_EXTVCC vs Frequency
20
V_IN = 20V
18
16
14
12
10
8
6
4
2
0
400 500 600 700 800
FREQUENCY (kHz)
900 1000
3608 G23
FCB Pin Current vs Temperature
0
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G25
RUN/SS Pin Current
vs Temperature
5.0
EXTV_CC Switch Resistance
vs Temperature
10
8
6
4
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G24
RUN/SS Pin Current
vs Temperature
3
2
PULL-DOWN CURRENT
1
0
–1
–2
–50 –25
PULL-UP CURRENT
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G26
Undervoltage Lockout Threshold
vs Temperature
4.0
4.5
3.5
LATCHOFF ENABLE
4.0
3.0
LATCHOFF THRESHOLD
3.5
2.5
3.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G27
2.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3608 G28
3608fa
7