LM2575,LM2576: Series SIMPLE SWITCHER® 3-A Step-Down Voltage Regulator

LM2575,LM2576: Series SIMPLE SWITCHER® 3-A Step-Down Voltage Regulator

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 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include fault protection 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 ±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.
Straight Leads 5-Lead TO-220 Package LM2575T-XX or LM2575HVT-XX
DDPAK/TO-263 Package 5-Lead Surface-Mount Package LM2575S-XX or LM2575HVS-XX

 

Features

  • 3.3-V, 5-V, 12-V, 15-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range,1.23 V to 37 V (57 V for HV Version) ±4% Maximum Over Line and Load Conditions
  • Specified 3-A Output Current
  • Wide Input Voltage Range: 40 V Up to 60 V for HV Version
  • Requires Only 4 External Components
  • 52-kHz Fixed-Frequency Internal Oscillator
  • TTL-Shutdown Capability, Low-Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Create a Custom Design with WEBENCH Tools
  • Thermal Shutdown and Current Limit Protection
  • P+ Product Enhancement Tested

Applications

  • Simple High-Efficiency Step-Down (Buck) Regulator
  • Efficient Pre-regulator for Linear Regulators
  • On-Card Switching Regulators
  • Positive-to-Negative Converter (Buck-Boost)

 

Slika Del # Proizvajalec Opis Zaloga Cena Nakup
BACC63CT257PBH
BACC63CT257PBH HOT SALE
SOURIAU
Circular MIL Spec Connector
0
1+
$12.0372
2+
$11.7900
5+
$11.5524
10+
$11.3280
25+
$10.9728
Podrobnosti
MS3474L16-8BY
MS3474L16-8BY HOT SALE
TE Connectivity / DEUTSCH
Circular MIL Spec Connector AFD 8C 8#12 SKT
0
1+
$7.5516
5+
$7.3068
10+
$7.1028
25+
$6.8580
50+
$6.4092
Podrobnosti
BACC63DB138PAH
SOURIAU
Circular MIL Spec Connector
0
1+
$20.0976
2+
$19.6848
5+
$19.2900
10+
$18.9132
25+
$18.3216
Podrobnosti
MS3470L14-5S-LC
TE Connectivity / DEUTSCH
Circular MIL Spec Connector AFD 5C 5#16 Skt Recp LC
0
1+
$5.2428
5+
$5.0892
10+
$4.9356
25+
$4.7832
50+
$4.4760
Podrobnosti
MS27467T25F37PC
SOURIAU
Circular MIL Spec Connector
0
1+
$20.0868
2+
$19.6752
5+
$19.2804
10+
$18.9036
25+
$18.3120
Podrobnosti
MS3470W1210SL
SOURIAU
Circular MIL Spec Connector
0
1+
$70.4724
2+
$68.1216
5+
$65.7108
10+
$64.3692
Podrobnosti
EN3646A71412AW
SOURIAU
Circular MIL Spec Connector
0
1+
$25.7544
2+
$24.8952
5+
$24.0144
10+
$23.5248
25+
$22.8360
Podrobnosti
ACS00E16S-15S-003
Amphenol Industrial
Circular MIL Spec Connector ER 2C 2#16S SKT REC
0
1+
$5.8224
5+
$5.2188
10+
$4.9464
25+
$4.3740
50+
$4.0716
Podrobnosti
CN1021A10G02S6Y240
Cinch
Circular MIL Spec Connector 26500 2C 2#20 S BY RECP WC
0
1+
$6.5724
5+
$6.3780
10+
$6.1860
25+
$5.9916
50+
$5.6052
Podrobnosti
EN2997S01831M6
SOURIAU
Circular MIL Spec Connector
0
1+
$25.7568
2+
$24.8976
5+
$24.0156
10+
$23.5260
25+
$22.8372
Podrobnosti
D3899920WG75PAL
SOURIAU
Circular MIL Spec Connector
0
1+
$15.0564
2+
$14.7468
5+
$14.4516
10+
$14.1696
25+
$13.7256
Podrobnosti
8T724F61AN
SOURIAU
Circular MIL Spec Connector
0
1+
$18.7452
5+
$18.1908
10+
$17.6400
25+
$17.0880
50+
$15.9852
Podrobnosti
GTCL01F20-27S-LC
Amphenol Industrial
Circular MIL Spec Connector 14C 14#16 SKT REC L INE
0
1+
$5.7180
5+
$5.5584
10+
$5.3808
25+
$5.2140
50+
$4.8768
Podrobnosti
D3899920MJ46AN
SOURIAU
Circular MIL Spec Connector
0
1+
$12.0372
2+
$11.7900
5+
$11.5524
10+
$11.3280
25+
$10.9728
Podrobnosti
AFD57-18-30SZ-LC
TE Connectivity / DEUTSCH
Circular MIL Spec Connector 30P SZ 18 PLUG CABLE MOUNT SOCKET
0
1+
$6.5760
5+
$6.3864
10+
$6.1824
25+
$5.9904
50+
$5.6028
Podrobnosti
ACT24MA98SB
TE Connectivity / DEUTSCH
Circular MIL Spec Connector ACT 3C 3#20 SKT RECP
0
1+
$6.5724
5+
$6.2172
10+
$5.9328
25+
$5.6844
50+
$5.3292
Podrobnosti
AIB30-20-23PC
Amphenol Industrial
Circular MIL Spec Connector GT 2C 2#8 PIN RECP WALL RM
0
1+
$3.2484
10+
$2.9544
25+
$2.8068
50+
$2.6580
100+
$2.5104
Podrobnosti
MS24266R22T55S8-LC
Cinch
Circular MIL Spec Connector 26500 55C 55#20 SKT PLUG
0
1+
$6.6372
5+
$6.4416
10+
$6.2460
25+
$6.0504
50+
$5.6604
Podrobnosti
D38999/26MG16AN-Q
Amphenol Aerospace
Circular MIL Spec Connector CTV 16C 16#16 PI PLUG
0
1+
$27.2340
5+
$16.1268
Podrobnosti
8T616F35PA
SOURIAU
Circular MIL Spec Connector
0
1+
$15.0372
5+
$14.5932
10+
$14.1516
25+
$13.7088
50+
$12.8244
Podrobnosti
Stran 1 / 2