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LM2633 Datasheet(PDF) 6 Page - Texas Instruments

Part # LM2633
Description  Advanced Two-Phase Synchronous Triple Regulator Controller for Notebook CPUs
PDF  47 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM2633 Datasheet(HTML) 6 Page - Texas Instruments

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OVP&PG
UVPG
UVP
1.12x0.9V
in:0.94x0.9V
out: 0.9x0.9V
in:0.84x0.9V
out: 0.8x0.9V
o v p 1
u v p g 1
u v p 1
inn1
ch1 on
ch2 on
endfault
OVP&PG
UVPG
UVP
1.12x1.24V
in:0.94x1.24V
out: 0.9x1.24V
in:0.84x1.24V
out: 0.8x1.24V
o v p 2
u v p g 2
u v p 2
UVPG
in: 0.94x1.24V
out: 0.9x1.24V
fb3
UVP
in: 0.84x1.24V
out: 0.8x1.24V
u v p g l r
u v p l r
u v p 1
u v p 2
ssto1
ssto2
u v p l r
5PA
c h a r g e
c h a r g e
o v p 1
o v p 2
u v p g 1
u v p g 2
new vid
u v p g l r
uvlo
latch off
OVP&PG: Over-voltage Protection and
Power Good Upper Limit Comparator
UVPG: Power Good Lower Limit Comarator
UVP: Under-voltage Protection Comparator
Signal names in I t a l i c are local to this page.
Q
R
R>S
S
5Ps
delay
5Ps
delay
pgood
logic
voltage
uv_delay
fb2
LM2633
SNVS139C – MAY 2004 – REVISED APRIL 2005
www.ti.com
Figure 4. Shutdown Latch and Power Good
Table 1. SHUT DOWN LATCH TRUTH TABLE
Input
Output
ovp1
ovp2
uvp1
uvp2
uvplr
new vid
ch1 on
ch2 on
fault
ssto1
ssto2
uv_delay
latch off
1
0
Σ=1
0
1
1
Σ=1
0
1
1
0
1
0
1
cap
1
1
1
0
1
cap
1
1
Σ = 1
0
Σ = 1
cap
1
All other combinations
0
Table 2. POWER GOOD TRUTH TABLE
Input
Output
ovp1
ovp2
uvpg1
uvpg2
uvpglr
new vid
ch1 on
ch2 on
fault
latch off
PGOOD
1
0
1
0
1
0
1
0
1
0
6
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Copyright © 2004–2005, Texas Instruments Incorporated
Product Folder Links: LM2633



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