LM22674MRX-ADJ

Product Summary

Output
Voltage
Order Number Package Type
NSC Package
Drawing
Supplied As Features
ADJ LM22674MR-ADJ
PSOP-8 Exposed Pad MRA08B
95 Units in Rails
ADJ LM22674MRE-ADJ 250 Units in Tape and Reel
ADJ LM22674MRX-ADJ 2500 Units in Tape and Reel
5.0 LM22674MR-5.0 95 Units in Rails
5.0 LM22674MRE-5.0 250 Units in Tape and Reel
5.0 LM22674MRX-5.0 2500 Units in Tape and Reel
ADJ LM22674QMR-ADJ
PSOP-8 Exposed Pad MRA08B
95 Units in Rails
AEC-Q100 Grade
qualified. Automotiv
Grade Production
Flow*
ADJ LM22674QMRE-ADJ 250 Units in Tape and Reel
ADJ LM22674QMRX-ADJ 2500 Units in Tape and Reel
5.0 LM22674QMR-5.0 95 Units in Rails
5.0 LM22674QMRE-5.0 250 Units in Tape and Reel
5.0 LM22674QMRX-5.0 2500 Units in Tape and Reel

Parametrics

Wide input voltage range: 4.5V to 42V
■ Internally compensated voltage mode control
■ Stable with low ESR ceramic capacitors
■ 200 mΩ N-channel MOSFET
■ Output voltage options:
-ADJ (outputs as low as 1.285V)
-5.0 (output fixed to 5V)
■ ±1.5% feedback reference accuracy
■ Switching frequency of 500 kHz
■ -40°C to 125°C operating junction temperature range
■ Precision enable pin
■ Integrated boot diode
■ Integrated soft-start
■ Fully WEBENCH
?
enabled
■ Step-down and inverting buck-boost applications
■ LM22674Q is an Automotive Grade product that is AEC-Q100 grade 1 qualified (-40°C to +125°C operating
junction temperatur

Features

The LM22674 series of regulators are monolithic integrated
circuits which provide all of the active functions for a step-
down (buck) switching regulator capable of driving up to 500
mA loads with excellent line and load regulation characteris-
tics. High efficiency (>90%) is obtained through the use of a
low ON-resistance N-channel MOSFET. The series consists
of a fixed 5V output and an adjustable version.
The SIMPLE SWITCHER
?
concept provides for an easy to
use complete design using a minimum number of external
components and National’s WEBENCH
?
design tool.
National’s WEBENCH
?
tool includes features such as exter-
nal component calculation, electrical simulation, thermal sim-
ulation, and Build-It boards for easy design-in. The switching
clock frequency is provided by an internal fixed frequency os-
cillator which operates at 500 kHz. The LM22674 series also
has built in thermal shutdown, current limiting and an enable
control input that can power down the regulator to a low 25
μA quiescent current standby condition.