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LX7167CLD

Description
Conv DC-DC 3V to 5.5V Synchronous Step Down 0.6V to 5V 2.4A 8-Pin DFN EP
File Size573KB,12 Pages
ManufacturerMicrosemi
Websitehttps://www.microsemi.com
Environmental Compliance
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LX7167CLD Overview

Conv DC-DC 3V to 5.5V Synchronous Step Down 0.6V to 5V 2.4A 8-Pin DFN EP

LX7167CLD Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
HTS8542.39.00.01
TypeSynchronous Step Down
Output TypeAdjustable
Switching Frequency (kHz)3400
Switching RegulatorYes
Output Voltage (V)0.6 to 5
Maximum Output Current (A)2.4
Minimum Input Voltage (V)3
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)3 to 5.5
Typical Switch Current (A)3.5
Typical Quiescent Current (uA)350
Line Regulation0.7%(Typ)
Load Regulation1%/A(Typ)
Minimum Operating Temperature (°C)-10
Maximum Operating Temperature (°C)85
Supplier PackageDFN EP
Pin Count8
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width2
PCB changed8
LX7167
3MHz, 2.4A
Step Down Converter
Description
LX7167 is a step-down PWM Switching Regulator
IC with integrated high side P-CH and low side N-
CH MOSFETs. The IC operates using a hysteretic
control topology with a full load operating switching
frequency of 3MHz allowing small output filter
components while maintaining excellent dynamic
load response.
The operational input voltage range of LX7167 is
from 3V to 5.5V. The part has a Power Save Mode
(PSM) that automatically transitions between PWM
and PSM mode depending on the load current. This
allows the converter’s efficiency to remain high
when load current drops. There is a Power Good
function to indicate the status of the IC.
In the shutdown mode, the IC’s current consumption
is reduced to less than 1µA and the output capacitor
is discharged.
Other features of the part are: a) Cycle-by-cycle
current limit followed by HICCUP mode which
reduces the overall power dissipation of the internal
MOSFETs, b) thermal protection and internal digital
soft start.
The LX7167 is available in a 2mm x 2mm 8 pin
exposed pad DFN package.
Features
2.4A Step-down Regulator
Operational Input Supply Voltage Range:
3V-5.5V
Integrated PMOS and NMOS
Load Current from Zero to 2.4A
3MHz Switching Frequency
SKIP Pulse to Improve Light Load
Efficiency
Input UVLO and OV Protection
Enable Pin
Power Good
Internal Soft-start
Cycle-by-Cycle Over Current Protection
Hiccup Mode Operation Under FB UVLO
RoHS Compliant for Pb Free
Applications
HDD
Set-Top Box
LCD TV’s
Notebook/Netbook
Routers
Video Cards
PC Peripherals
PoE Powered Devices Smart Phone
100k
VIN
8
PVIN
PG
6
PGOOD
C
IN
7
SW
VCC
2
0.68µF
R1
1%
VOUT
LX7167
FB
4
C9
C
OUT
5
EN
GND
3
PGND
1
R2
1%
Figure 1 ·
Typical Application of LX7167
Aug 2013 Rev. 1.1
www.microsemi.com
© 2013 Microsemi Corporation
1

LX7167CLD Related Products

LX7167CLD
Description Conv DC-DC 3V to 5.5V Synchronous Step Down 0.6V to 5V 2.4A 8-Pin DFN EP
EU restricts the use of certain hazardous substances Compliant
ECCN (US) EAR99
HTS 8542.39.00.01
Type Synchronous Step Down
Output Type Adjustable
Switching Frequency (kHz) 3400
Switching Regulator Yes
Output Voltage (V) 0.6 to 5
Maximum Output Current (A) 2.4
Minimum Input Voltage (V) 3
Maximum Input Voltage (V) 5.5
Operating Supply Voltage (V) 3 to 5.5
Typical Switch Current (A) 3.5
Typical Quiescent Current (uA) 350
Line Regulation 0.7%(Typ)
Load Regulation 1%/A(Typ)
Minimum Operating Temperature (°C) -10
Maximum Operating Temperature (°C) 85
Supplier Package DFN EP
Pin Count 8
Mounting Surface Mount
Package Height 0.75(Max)
Package Length 2
Package Width 2
PCB changed 8
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