LM2575HVT-15

Product Summary

General Description:The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A 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 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 LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat
sink is required.A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers.
This feature greatly simplifies the design of switch-modepower 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

Parametrics

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Supply Voltage
LM1575/LM2575 ：45V
LM2575HV ：63V
ON /OFF Pin Input Voltage -0.3V ≤ V ≤ +VIN
Output Voltage to Ground(Steady State) -1V
Power Dissipation Internally Limited
Storage Temperature Range -65℃ to +150℃
Maximum Junction Temperature 150℃
Minimum ESD Rating(C = 100 pF, R = 1.5 kΩ) 2 kV
Lead Temperature(Soldering, 10 sec.) 260℃

Features

Features
(1) 3.3V, 5V, 12V, 15V, and adjustable output versions; 
(2) Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions; 
(3) Guaranteed 1A output current; 
(4) Wide input voltage range, 40V up to 60V for HV version; 
(5) Requires only 4 external components; 
(6) 52 kHz fixed frequency internal oscillator; 
(7) TTL shutdown capability, low power standby mode; 
(8) High efficiency; 
(9) Uses readily available standard inductors; 
(10) Thermal shutdown and current limit protection; 
(11) P+Product Enhancement tested