Datasheet

MAX5003
High-Voltage PWM
Power-Supply Controller
8 _______________________________________________________________________________________
FREQ
REFOK
SDN
INDIV
MAXTON
RAMP
AGND
V
CC
V
CC
CLK
RAMP
V
CC
R
R
V
REF
CS BLANK
DRIVER
NDRV
CURRENT
SENSE
C
LIMIT
REF
REFOK
V
IN
OK
V
IN
OK
BANDGAP
REFERENCE
LINEAR
REGULATOR
V
CC
OK
V
DD
V
DD
V
CC
V
CC
SDN
AGND
AGND
LINEAR
REGULATOR
V
DD
V
ES
AGND
100ns
STRETCHING
V
CC
V
CC
PGND
16
15
14
13
12
11
10
9
V
DD
1
2
1.2V
3
UV LOCKOUT
4
5
6
7
V+
INDIV
ES
FREQ
SS
REF
CON
COMP
8
V
CC
NDRV
PGND
CS
AGND
MAXTON
FB
V
CC
PGND
AGND
HIGH-VOLTAGE EPIFET
V
FETBIAS
V
CC
PGND
0.1V
PWM COMP
SS
SDN
ERROR AMP
V
CON
AGND
AGND
CLK Q
D “D”FF
MAX5003
R
“1”
Figure 1. Functional Diagram