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LM2576HV

Features: · 3.3V, 5V, 12V, 15V, and adjustable output versions· Adjustable version output voltage range, 1.23V to 37V (57V for HV version) g4% 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 component...

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SeekIC No. : 004394890 Detail

LM2576HV: Features: · 3.3V, 5V, 12V, 15V, and adjustable output versions· Adjustable version output voltage range, 1.23V to 37V (57V for HV version) g4% max over line and load conditions· Guaranteed 3A output...

LM2576HV Data Sheet

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Part Number:
LM2576HV
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· 3.3V, 5V, 12V, 15V, and adjustable output versions
· Adjustable version output voltage range, 1.23V to 37V (57V for HV version) g4% 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 internal oscillator
· TTL shutdown capability, low power standby mode
· High efficiency
· Uses readily available standard inductors
· Thermal shutdown and current limit protection
· Pa Product Enhancement tested




Application

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




Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Maximum Supply Voltage
LM2576 45V
LM2576HV 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
Minimum ESD Rating
(C= 100 pF, R= 1.5 k) 2kV
Lead Temperature
(Soldering, 10 Seconds)260
Maximum Junction Temperature150

Output Current 3000 mA
Input Min Voltage 4 Volt
Input Max Voltage 60 Volt
Output Min 3.3, 1.23, 12, 15, 5 Volt
Output Max 57, 3.3, 12, 15, 5 Volt
Frequency Min 52 kHz
Frequency Max 52 kHz
Efficiency (peak) 77, 88, 75 %
On/Off Pin Yes
Error Flag No
SoftStart No
Sync Pin No
Inverting Yes
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Adjustable Output Yes, No
Adj Switch Frequency No
PWM Mode Voltage
Topology Buck
Special Features SIMPLE SWITCHER regulator
Step-Down Yes
Multiple Output Capability No
Output Power Undefined Watt
Output Voltage 3.3, Undefined, 12, 15, 5 Volt
Output Range 15V, 5V, 12V, 3.3V, 1.23V to 57V
Switching Frequency 52 kHz
Regulator Family SIMPLE SWITCHER
AEC Q-100 Automotive Grade Undefined
Synchronous Rectification No
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Description

The LM2576HV 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 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 LM2576HV 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 g4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 A (typical) standby current.

The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.






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