Product Summary

The LM2576T is a regulator. It is a 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 LM2576T is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. The applications of the LM2576T include Simple high-efficiency step-down (buck) regulator, Efficient pre-regulator for linear regulators, On-card switching regulators and Positive to negative converter (Buck-Boost).

Parametrics

LM2576T absolute maximum ratings: (1)Maximum Supply Voltage: 45V; (2)ON /OFF Pin Input Voltage: -0.3V ≤ V ≤ +VIN; (3)Output Voltage to Ground (Steady State): -1V; (4)Power Dissipation: Internally Limited; (5)Storage Temperature Range: -65 to +150℃; (6)Maximum Junction Temperature: 150℃; (7)Minimum ESD Rating (C = 100 pF, R = 1.5 kΩ): 2kV; (8)Lead Temperature (Soldering, 10 Seconds): 260℃.

Features

LM2576T 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 3A 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.

Diagrams

LM2576T block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM2576T-005
LM2576T-005

ON Semiconductor

Switching Converters, Regulators & Controllers 5V 3A Buck PWM

Data Sheet

Negotiable 
LM2576T-005G
LM2576T-005G

ON Semiconductor

Switching Converters, Regulators & Controllers 5V 3A Buck PWM

Data Sheet

0-1: $1.22
1-25: $0.99
25-100: $0.89
100-500: $0.69
LM2576T-012
LM2576T-012

ON Semiconductor

Switching Converters, Regulators & Controllers 12V 3A Buck PWM

Data Sheet

Negotiable 
LM2576T-015
LM2576T-015

ON Semiconductor

Switching Converters, Regulators & Controllers 15V 3A Buck PWM

Data Sheet

Negotiable 
LM2576T-015G
LM2576T-015G

ON Semiconductor

Switching Converters, Regulators & Controllers 15V 3A Buck PWM

Data Sheet

Negotiable 
LM2576T-12
LM2576T-12

National Semiconductor (TI)

Switching Converters, Regulators & Controllers

Data Sheet

0-315: $1.21
315-540: $1.06
540-1035: $0.85
1035-2520: $0.80
LM2576T-12/LB03
LM2576T-12/LB03

National Semiconductor (TI)

Switching Converters, Regulators & Controllers

Data Sheet

0-315: $1.36
315-540: $1.22
540-1035: $1.03
1035-2520: $0.98
LM2576T-12/LF03
LM2576T-12/LF03

National Semiconductor (TI)

Switching Converters, Regulators & Controllers

Data Sheet

0-315: $1.36
315-540: $1.22
540-1035: $1.03
1035-2520: $0.98