MAX1717 Maxim, MAX1717 Datasheet - Page 15

• Manufacturer Part Number: MAX1717
• Description: Dynamically Adjustable / Synchronous Step-Down Controller for Notebook CPUs
• Manufacturer: Maxim

Figure 2. Functional Diagram
2V TO 28V
V
BATT
VGATE
FBS
TON
SKP/SDN
CC
GNDS
-7%
REF
Step-Down Controller for Notebook CPUs
TRIG
g
m
______________________________________________________________________________________
COMPUTE
ON-TIME
1-SHOT
TON
TON
V+
g
m
Dynamically Adjustable, Synchronous
Q
FB
+12%
FROM
REF
REF
D/A
70k
g
m
ERROR
AMP
10k
OVP/UVP
DETECT
REF
Q
A/B
1-SHOT
S
R
TOFF
Q
TRIG
D0
MUX AND SLEW CONTROL
D/A CONVERTER
S
R
D1
R-2R
CURRENT
Q
LIMIT
D2
Σ
D3
D4
9
I
LIM
CHIP SUPPLY
1
ZERO CROSSING
MAX1717
TIME
REF
2V
120k
REF
BST
V
V
REF
DH
DL
LX
DD
FB
CC
+5V
+5V
GND
+5V
OUTPUT
15