MAX1717 查看數據表（PDF） - Maxim Integrated
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MAX1717 Datasheet PDF : 33 Pages
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Dynamically Adjustable, Synchronous
Step-Down Controller for Notebook CPUs
VBATT
2V TO 28V
REF
V+
TON
ON-TIME FROM
COMPUTE D/A
TOFF
1-SHOT
Q
TRIG
ILIM
MAX1717
+5V
9
1
BST
TON
TRIG
Q
1-SHOT
SKP/SDN
CC
gm
GNDS
FBS
REF
-7%
VGATE
REF
70k
gm
gm
FB
REF
+12%
SQ
R
ERROR
AMP
10k
CURRENT
LIMIT
Σ
REF
S
Q
R
OVP/UVP
DETECT
R-2R
D/A CONVERTER
DH
LX
ZERO CROSSING
VDD +5V
DL
GND
FB
CHIP SUPPLY VCC
+5V
2V REF
REF
MUX AND SLEW CONTROL
A/B
D0 D1 D2 D3 D4
TIME
120k
OUTPUT
Figure 2. Functional Diagram
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