D2576

Category:

DC/DC Series Circuit

key word:

Integrated circuit

Description

depressurization

Input voltage range

4V~40V

Output voltage

ADJ,5V,12V

Internal benchmark

1.235V

Output voltage accuracy

±3%

Output current

Switching frequency（kHz）

Operating temperature range

-40°C ~ 125°C

Packaging form

TO263-5L TO220-5

Compatible models

LM2576

Messages

General Description

The D2576 series of regulators are monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load
regulation. The D2576 available in fixed output voltages of 3.3V, 5V,12Vand an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.

The D2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the D2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

The D2576 is available in TO220-5 and TO263-5 package.

Features

·3.3V, 5V, 12V and adjustable output versions
· High efficiency
· Guaranteed 3A output current
· Requires only 4 external components
· 52 kHz fixed frequency internal oscillator
· TTL shutdown capability, low power standby mode
· Uses readily available standard inductors
· Thermal shutdown and current limit protection
· Adjustable version output voltage range, 1.23V to 37V ±4% max over line and load conditions

Application

·Simple high-efficiency step-down (buck) regulator
· Efficient pre-regulator for linear regulators
· On-card switching regulators
·Positive to negative converter (Buck-Boost)

Product manual

Product Consultation

Action

Remove

Name

Tel

E-mail

Inquiry content

Submit inquiry