Rainbow Electronics MAX5068 - Manual (Page 18)

MAX5068
High-Frequency, Current-Mode PWM Controller
with Accurate Programmable Oscillator
18 ______________________________________________________________________________________
MAX5068
Σ
NDRV
S Q
R
OSC
DEAD
TIME
THERMAL
SHUTDOWN
PGND
DT RT
ERROR
AMP
PWM
COMPARATOR
CURENT-LIMIT
COMPARATOR
2.8V/
1.6V
5k Ω
70ns
BLANKING
COMP
FB
CS
AGND
R Q
S
60 µ A
FLTINT
DIGITAL
SOFT-START
314mV
1.23V
REGULATOR
V CC
IN
REG_OK
IN
V CC
1.23V
REFERENCE
UVLO
1.23V/
1.18V
UVLO/EN
21.6V/
9.74V
V IN
CLAMP
26V
BOOTSTRAP
UVLO
HYST*
REG5
1.6V
5V
OUT
SYNC**
SLOPE
COMPENSATION
***SCOMP
*MAX5068A/B/D AND MAX5068F ONLY.
**MAX5068A/B/C AND MAX5068E ONLY.
***MAX5068C/D/E/F ONLY.
+
+
*
Functional Diagram