Product Summary

The LM2574MX-12 is a 0.5A step-down voltage regulator. It is capable of driving a 0.5A load with excellent line and load regulation. The LM2574MX-12 is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. The applications of the LM2574MX-12 include: (1)Simple high-efficiency step-down (buck) regulator; (2)Efficient pre-regulator for linear regulators; (3)On-card switching regulators; (4)Positive to negative converter (Buck-Boost).

Parametrics

LM2574MX-12 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)Minimum ESD Rating(C = 100 pF, R = 1.5 kΩ): 2kV; (5)Storage Temperature Range: -65℃ to +150℃; (6)Lead Temperature(Soldering, 10 seconds): 260℃; (7)Maximum Junction Temperature: 150℃.

Features

LM2574MX-12 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 0.5A 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.

Diagrams

LM2574MX-12 Connection Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2574MX-12
LM2574MX-12
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-1000: $0.71
1000-3000: $0.66
3000-5000: $0.64
5000-10000: $0.50
LM2574MX-12/NOPB
LM2574MX-12/NOPB
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-1: $1.52
1-25: $1.23
25-100: $1.10
100-250: $0.98