nx4110 Microsemi Corporation, nx4110 Datasheet - Page 3

• Manufacturer Part Number: nx4110
• Description: 1a Synchronous Buck Switcher With Fet On Board
• Manufacturer: Microsemi Corporation

PIN DESCRIPTIONS
Rev. 2.0
12/30/09
Current Limit
Current Limit Threshold
Thermal Shutdown
Thermal shutdown trip point
Hysteresis
Internal Switch
Rdson of Control FET
Rdson of Synchronous FET
PGOOD
PGOOD low Threshold
voltage
PGOOD high Threshold
voltage
PIN SYMBOL
PGOOD
GND
VIN
SW
FB
PARAMETER
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
output inductor.
output supply returns, and negative terminals of the input and output capacitors.
resistor dividers to the output of the switching regulators to set the output DC voltage. A
332kohm resistor is recommended to be connected from VOUT and FB .
capacitor.
PGOOD indicator. It requires a pull up resistor to Vcc or lower voltage. When FB pin
reaches 90% of the reference voltage PGOOD transitions from LO to HI state.
SW output. Junction of the internal high-side and low-side power MOSFETs, and
Ground Connection for Chip. Connect GND with large copper areas to the input and
Error amplifier inverting input. Error amplifier inverting input. This pin is connected via
Supply voltage input for switcher. This pin needs minimum 22uF/X5R/6.3V as input
SYM
Analog Mixed Signal Group
PIN DESCRIPTION
Microsemi
Test Condition
Vin=3.3V
Vin=3.3V
Vin=5V
Vin=5V
Min
TYP
155
400
480
300
360
1.8
15
85
90
MAX
NX4110
mohm
mohm
%V
%V
Units
o
o
A
C
C
REF
REF
3