LM22676TJE-5.0+ National Semiconductor, LM22676TJE-5.0+ Datasheet

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LM22676TJE-5.0+

Manufacturer Part Number
LM22676TJE-5.0+
Description
Manufacturer
National Semiconductor
Datasheets

Specifications of LM22676TJE-5.0+

Notes
NEW
Date_code
10+
© 2008 National Semiconductor Corporation
LM22676
3A SIMPLE SWITCHER®, Step-Down Voltage Regulator
with Precision Enable
General Description
The LM22676 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 3A
loads with excellent line and load regulation characteristics.
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
use complete design using a minimum number of external
components and National’s WEBENCH
National’s WEBENCH
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 LM22676 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.
Simplified Application Schematic
®
tool includes features such as exter-
®
concept provides for an easy to
300765
®
design tool.
Features
Package
Applications
Wide input voltage range: 4.5V to 42V
Internally compensated voltage mode control
Stable with low ESR ceramic capacitors
120 mΩ N-channel MOSFET TO-263 THIN package
100 mΩ N-channel MOSFET PSOP-8 package
Output voltage options:
±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
Step-down and inverting buck-boost applications
PSOP-8 (Exposed Pad)
TO-263 THIN (Exposed Pad)
Industrial Control
Telecom and Datacom Systems
Embedded Systems
Automotive Telematics and Body Electronics
Conversions from Standard 24V, 12V and 5V Input Rails
-ADJ (outputs as low as 1.285V)
-5.0 (output fixed to 5V)
®
enabled
30076501
November 21, 2008
www.national.com

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