LTC3612_15 Datasheet, PDF (22/30 Pages) Linear Technology – 3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

LTC3612
Applications Information
V_FB PIN ^0.6V
VOLTAGE _0V
0.6V
TRACK/SS
PIN VOLTAGE ^0.2V
0V
V_IN
RUN PIN
VOLTAGE
0V
SV_IN PIN ^VIN
VOLTAGE
0V
SHUTDOWN SOFT-START
STATE
STATE
t_SS > 1ms
RUN STATE
TIME
REDUCED
SWITCHING
FREQUENCY
RUN STATE
3612 F07
DOWN
TRACKING
STATE
UP
TRACKING
STATE
Figure 7. DDR Pin Not Tied to S_VIN
0.45V
V_FB PIN ^0.3V
VOLTAGE _0V
0.45V
TRACK/SS ^0.3V
PIN VOLTAGE ^0.2V
0V
V_IN
RUN PIN
VOLTAGE
0V
SV_IN PIN ^VIN
VOLTAGE
0V
SHUTDOWN SOFT-START
STATE
STATE
t_SS > 1ms
EXTERNAL
VOLTAGE
REFERENCE 0.45V
RUN STATE
TIME
REDUCED
SWITCHING
FREQUENCY
RUN STATE
3612 F08
DOWN
TRACKING
STATE
UP
TRACKING
STATE
Figure 8. DDR Pin Tied to SV_IN. Example DDR Application
22
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3612fc