lm2633mtd National Semiconductor Corporation, lm2633mtd Datasheet - Page 6

• Manufacturer Part Number: lm2633mtd
• Description: Advanced Two-phase Synchronous Triple Regulator Controller For Notebook Cpus
• Manufacturer: National Semiconductor Corporation

www.national.com
ovp1
Note 1: ’ =1’ means at least one variable is high.
Note 2: ’Fault’ is the logic OR of UVLO and thermal shutdown.
Note 3: ’Cap’ means the pin has a capacitor of appropriate value between it and ground.
Note 4: Positive logic is used.
Note 5: For meanings of the variables, refer to the block diagrams.
Note 6: A blank value means ’don’t care’.
Note 7:
Note 8: Positive logic is used.
Note 9: A blank value means ’don’t care’.
Note 10: For meanings of the variables, refer to the block diagrams.
ovp1
1
1
VID4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
ovp2
= 0 means at least one variable is low.
1
ovp2
1
uvp1
1
uvpg1
1
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
uvp2
1
uvpg2
1
uvplr
1
TABLE 1. Shut Down Latch Truth Table
TABLE 3. VID Code and DAC Output
TABLE 2. Power Good Truth Table
All other combinations
uvpglr
All other combinations
VID2
1
new
vid
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
Input
Input
ch1 on
new
vid
1
1
6
=1
=1
= 1
ch2 on
ch1 on
VID1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
= 0
fault
0
0
0
0
0
ch2 on
ssto1
1
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
fault
= 1
1
ssto2
1
latch off
uv_delay
DAC Voltage (V)
1
cap
cap
cap
No CPU
0.925
0.950
0.975
1.000
1.025
1.050
1.075
1.100
1.125
1.150
1.175
1.200
1.225
PGOOD
Output
latch off
Output
*
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0