NX2141CMTR MICROSEMI [Microsemi Corporation], NX2141CMTR Datasheet - Page 4

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

PIN DESCRIPTIONS
Rev. 1.6
05/15/07
Power Good(MLPQ only)
Threshold Voltage as % of
Vref
Hysteresis
FBUVLO
Feedback UVLO threshold
Over temperature
Threshold
Hysteresis
PIN SYMBOL
(MLPQ only)
PGOOD
PARAMETER
COMP
HDRV
PVCC
LDRV
GND
VCC
BST
SW
VIN
FB
EN
This pin supplies the internal 5V bias circuit. A 1uF ceramic capacitor is placed as
close as possible to this pin and ground pin.
This pin supplies voltage to high side FET driver. A high freq minimum 0.1uF ceramic
capacitor is placed as close as possible to and connected to this pin and SW pin.
Power ground.
This pin is the error amplifiers inverting input. This pin is connected via resistor divider to
the output of the switching regulator to set the output DC voltage.
This pin is the output of the error amplifier and together with FB pin is used to compensate
the voltage control feedback loop.
This pin is connected to source of high side FETs and provide return path for the high
side driver.
High side gate driver output.
Low side gate driver output.
Pull up this pin to Vcc for normal operation. Pulling this pin down below 0.4V shuts
down the controller and resets the soft start.
Bus voltage input provides power supply to oscillator and VIN UVLO signal.
An open drain output that requires a pull up resistor to Vcc or a voltage lower than Vcc.
When FB pin reaches 90% of the reference voltage, PGOOD changes from LO to HI
state.
Supply voltage for the low side fet drivers. A high frequency 1uF ceramic cap must be
connected from this pin to the PGND pin as close as possible.
SYM
percent of nominal
PIN DESCRIPTION
Test Condition
FB ramping up
Min
65
TYP
150
90
70
20
5
MAX
NX2141
75
Units
°C
°C
%
%
%
4