NX2141CMTR MICROSEMI [Microsemi Corporation], NX2141CMTR Datasheet - Page 5

• Manufacturer Part Number: NX2141CMTR
• Description: SINGLE CHANNEL MOBILE PWM CONTROLLER WITH FEEDFORWARD AND ENABLE
• Manufacturer: MICROSEMI [Microsemi Corporation]

BLOCK DIAGRAM
Rev. 1.6
05/15/07
COMP
AGND
VCC
FB
EN
VIN
6V/
5.5V
START
Generator
COMP
Digital
start Up
0.3V
Bias
0.8V
DISABLE
START
Figure 2 - Simplified block diagram of the NX2141(MLPQ)
ramp
1.25V
0.8V
OSC
VIN
0.6V
CLAMP
UVLO
1.3V
CLAMP
S
R
Q
POR
OC
DISABLE
START
POR
Hiccup Logic
PWM
OC
OCP
comparator
Control
Logic
SS_half_done
0.85Vref
/0.90Vref
FB
70%*Vp
320mV
FB
NX2141
HDRV
SW
PVCC
LDRV
PGND
BST
PGOOD
5