Rainbow Electronics MAX1813 - Manual (Page 16)

MAX1813
Dynamically-Adjustable, Synchronous Step-Down
Controller with Integrated Voltage Positioning
16 ______________________________________________________________________________________
TOFF
ONE-SHOT
TON
GND
V CC
REF
CC
PGOOD
VPCS
CHIP
SUPPLY
FROM
DAC
TRIG Q
S
SET
CLR
R
Q
Q
TON
ONE-SHOT
2V
REF
REF
+10%
5-BIT
R-2R
DAC
REF
-12%
TRIG Q
S
SET
CLR
R
Q
Q
LX
VPCS
DH
BST
V BATT
5V TO 24V
5V BIAS
SUPPLY
ILIM V+
REF
PGND
DL
V DD
D0 CODE ZMODE D1 D2 D3 D4
SUS
FB
S0
S1
TIME
SOFT-START
ZERO
CROSSING
2V
REF
SKP/SDN
TON
COMPUTE
OVP/UVP
DETECT
OSC
DECODER
(SEE FIGURE 6)
AND
SLEW-RATE CONTROLLER
MAX1813
5V
BIAS
Gm
9R
R
V OUT
Figure 2. Functional Diagram