ISL6843CBZ-T Datasheet, PDF (3/13 Pages) Intersil Corporation – Improved Industry Standard Single-Ended Current Mode PWM Controller

Functional Block Diagram
VDD
GND
UVLO
COMPARATOR
+
V_DD OK
-
BG ^+-
2.5V
A
A = 0.5
V_REF
5.00V
ENABLE
VREF FAULT ^-
+
VREF
UV COMPARATOR
4.65V 4.80V
BG
CS
ERROR
AMPLIFIER
+
FB
-
COMP
RTCT
VREF
2.6V
0.7V
ON
OSCILLATOR
COMPARATOR
-
+
8.4mA
CLOCK
ON
100mV
PWM
COMPARATOR
+
-
2R
R
1.1V
CLAMP
ISL6841/ISL6844/ISL6845
ONLY
Q
T
Q
SQ
RQ
RESET
DOMINANT
P/N
-40, -41
-42, -44
-43, -45
UVLO ON/OFF
7.0/6.6V
14.3/8.8V
8.4/7.2V
VREF
OUT