NX2116A MICROSEMI [Microsemi Corporation], NX2116A Datasheet - Page 5

• Manufacturer Part Number: NX2116A
• Description: SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE
• Manufacturer: MICROSEMI [Microsemi Corporation]

BLOCK DIAGRAM
Rev. 3.0
03/14/06
COMP
VCC
GND
EN
FB
1.25/1.15
START
Generator
Digital
start Up
Bias
0.8V
START
ramp
1.25V
0.8V
Figure 2 - Simplified block diagram of the NX2116
OSC
0.6V
CLAMP
UVLO
1.3V
CLAMP
NX2116/2116A/2116B/2117/2117A
S
R
0.6V
FB
Q
POR
OC
START
Latch Out
PWM
OC
Hiccup Logic
OC
Control
Logic
0.9Vref
/0.85Vref
OCP
comparator
FB
VCC
40uA
OCP
HDRV
SW
LDRV
BST
PGOOD
5