Datasheet
MAX8632
Integrated DDR Power-Supply Solution for
Desktops, Notebooks, and Graphic Cards
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MAX8632
S
R
Q
S
R
Q
ON-TIME
COMPUTE
t
ON
ONE-SHOT
1.0V
LX
LX
1.16 x INTREF
OVP/UVP
LATCH
QUAD LEVEL
DECODE
20ms
TIMER
0.7 x INTREF
INTREF
FB
DECODE
DISCHARGE
LOGIC
N
2V
REFERENCE
INTREF
V
OUT
= 1.8V
V
OUT
= 2.5V
N
INTREF + 10%
INTREF - 10%
N
POWER-DOWN
0.1V OUT
10kΩ 10kΩ
REFIN
/
2
REFIN
/
2 - 10%
REFIN
/
2 + 10%
REFIN
/
2 - 10%
REFIN
/
2 + 10%
IN
BST
DH
LX
V
DD
DL
PGND
ILIM
V
DD
- 1V
OUT
AV
DD
GND
REF
REFIN
VTT
V
DD
V
DD
N
N
PGND2
VTTR
SS
POK2
FB
POK1
OVP/UVP
TON
t
OFF
Q
TRIG
ONE-SHOT
Q
TRIG
ZERO CROSSING
VTTS
VTTI
CURRENT
LIMITS
VTT ILIM
TP0
SHUTDOWN
DECODER
BUCK ON/OFF
VTT ON/OFF VTTR ON/OFF
BIAS ON/OFF
SHDN
STBY
SKIP
VTTI
PGND2
OUT
Figure 1. Functional Diagram