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LM2576HVT-3.3

Description
7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5
Categorysemiconductor    Analog mixed-signal IC   
File Size270KB,8 Pages
ManufacturerTiger Electronic Co.,Ltd.
Websitehttp://www.tgselec.com/
Download Datasheet Parametric View All

LM2576HVT-3.3 Overview

7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5

LM2576HVT-3.3 Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals5
Rated input voltage25 V
Maximum limit input voltage60 V
Minimum limit input voltage15 V
Maximum operating temperature125 Cel
Minimum operating temperature-40 Cel
Processing package descriptionTO-263, 5 PIN
stateACTIVE
packaging shapeRectangle
Package SizeSMALL OUTLINE
surface mountYes
Terminal formGULL WING
Terminal spacing1.7 mm
terminal coatingtin lead
Terminal locationsingle
Packaging MaterialsPlastic/Epoxy
Temperature levelAUTOMOTIVE
control modeVoltage
Control TechnologyPulse width MODULATION
Maximum output current7.5 A
Analog IC other typesswitching regulator
Switch configurationBUCK
Maximum switching frequency63 kHz
TIGER ELECTRONIC CO.,LTD
LM2576 Series
Description
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching
regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V,
5V, 12V, 15V, and an adjustable output versions. Requiring a minimum number of external components, these regulators are simple to
use and include internal frequency compensation and a fixed-frequency oscillator. The LM2576 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 LM2576 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 50µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as
thermal shutdown for full protection under fault conditions.
Note:
Features
Applications
3.3V, 5V, 12V, 15V, and adjustable output versions
Adjustable version output voltage range
1.23V to 37V (57V for HV version) ± 4% max over line
and load conditions
Guaranteed 3A output current
Wide input voltage range, 40V up to 60V for HV
version
Requires only 4 external components
52 kHz fixed frequency oscillator
TTL shutdown capability, low power standby mode
High efficiency
Uses readily available standard inductors
Thermal shutdown and current limit protection
Simple high-efficiency step-down (buck) regulator
Efficient pre-regulator for linear regulators
On-card switching regulators
Positive to negative converter (Buck-Boost)
Typical application
Figure 1.(Fixed Output Voltage Versions)
7V - 40V
(60V for HV)
UNREGULATED
DC INPUT
+V
IN
1
LM2576/
LM2576HV-
5.0
3
+
GND
C
IN
FEEDBACK
4
L1
OUTPUT
2
100
H
5 ON/OFF
D1
1N5822
+
C
OUT
1000
F
+5V
REGULATED
OUTPUT
3A
LOAD
TIGER ELECTRONICS CO.,LTD
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