Product Summary

The LM2594M-3.3 is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5A load with excellent line and load regulation. The LM2594M-3.3 is available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version, and is packaged in a 8-lead DIP and a 8-lead surface mount package. The LM2594M-3.3 operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.

Parametrics

LM2594M-3.3 absolute maximum ratings: (1)Maximum Supply Voltage: 45V; (2)ON /OFF Pin Input Voltage: -0.3 ≤ V ≤ +25V; (3)Feedback Pin Voltage: -0.3 ≤ V ≤+25V; (4)Output Voltage to Ground: -1V; (5)Power Dissipation: Internally limited; (6)Storage Temperature Range: -65℃ to +150℃; (7)ESD Susceptibility: 2 kV; (8)Maximum Junction Temperature: +150℃.

Features

LM2594M-3.3 features: (1)3.3V, 5V, 12V, and adjustable output versions; (2)Adjustable version output voltage range, 1.2V to 37V (57V for the HV version)±4% max over line and load conditions; (3)Available 8-pin surface mount and DIP-8 package; (4)Guaranteed 0.5A output current; (5)Input voltage range up to 60V; (6)Requires only 4 external components; (7)150 kHz fixed frequency internal oscillator; (8)TTL Shutdown capability; (9)Low power standby mode, IQ typically 85 μA; (10)High Efficiency; (11)Uses readily available standard inductors; (12)Thermal shutdown and current limit protection.

Diagrams

LM2594M-3.3 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2594M-3.3
LM2594M-3.3
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-285: $0.86
285-570: $0.84
570-760: $0.82
760-1045: $0.81
LM2594M-3.3/NOPB
LM2594M-3.3/NOPB
National Semiconductor (TI)
Switching Converters, Regulators & Controllers 150KHZ 0.5A STEP- DOWN VLTG REG
Data Sheet
0-1: $1.62
1-10: $1.45
10-25: $1.30
25-50: $1.22