LTC3734 LINER [Linear Technology], LTC3734 Datasheet - Page 18

• Manufacturer Part Number: LTC3734
• Description: Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
• Manufacturer: LINER [Linear Technology]

APPLICATIO S I FOR ATIO
LTC3734
Table 1. VID Output Voltage Programming
4.2V typically. Only then is the PGOOD pull-low signal
released.
When RUN/SS goes low, PGOOD goes low simultaneously.
Fault Conditions: Overcurrent Latchoff
The RUN/SS pin also provides the ability to latch off the
controller when an overcurrent condition is detected. The
18
VID5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
U
VID2
U
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
VID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
W
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
U
LTC3734
1.708V
1.692V
1.676V
1.660V
1.644V
1.628V
1.612V
1.596V
1.580V
1.564V
1.548V
1.532V
1.516V
1.500V
1.484V
1.468V
1.452V
1.436V
1.420V
1.404V
1.388V
1.372V
1.356V
1.340V
1.324V
1.308V
1.292V
1.276V
1.260V
1.244V
1.228V
1.212V
RUN/SS capacitor, C
current. After the controller has been started and been
given adequate time to charge up the output capacitors
and provide full load current, the RUN/SS capacitor is used
for a short-circuit timer. If the output voltage falls to less
than 70% of its nominal value after C
begins discharging on the assumption that the output is in
an overcurrent condition. If the condition lasts for a long
VID5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SS
, is used initially to limit the inrush
VID2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
VID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SS
reaches 4.2V, C
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
LTC3734
1.196V
1.180V
1.164V
1.148V
1.132V
1.116V
1.100V
1.084V
1.068V
1.052V
1.036V
1.020V
1.004V
0.988V
0.972V
0.956V
0.940V
0.924V
0.908V
0.892V
0.876V
0.860V
0.844V
0.828V
0.812V
0.796V
0.780V
0.764V
0.748V
0.732V
0.716V
0.700V
3734f
SS