LM2597M-ADJ

Product Summary

The LM2597M-ADJ 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 a 0.5A load with excellent line and load regulation. The LM2597M-ADJ is available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version, and is packaged in an 8-lead DIP and an 8-lead surface mount package. The LM2597M-ADJ switching regulator is similar to the LM2594 series, with additional supervisory and performance features added. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation improved line and load specifications, fixed-frequency oscillator, Shutdown /Soft-start, error flag delay and error flag output.

Parametrics

LM2597M-ADJ absolute maximum ratings: (1)Maximum Supply Voltage (VIN): 60V; (2)SD /SS Pin Input Voltage: 6V; (3)Delay Pin Voltage: 1.5V; (4)Flag Pin Voltage: -0.3 ≤ V ≤45V; (5)Bias Supply Voltage (VBS) -0.3 ≤ V ≤ 30V; (6)Feedback Pin Voltage: -0.3 ≤ V ≤+25V; (7)Output Voltage to Ground (Steady State): -1V; (8)Power Dissipation: Internally limited; (9)Storage Temperature Range: -65℃ to +150℃; (10)ESD Susceptibility, Human Body Model: 2 kV; (11)Lead Temperature, M8 Package, Vapor Phase (60 sec.): +215℃; (12)Infrared (15 sec.): +220℃; (13)N Package (Soldering, 10 sec.): +260℃; (14)Maximum Junction Temperature: +150℃.

Features

LM2597M-ADJ features: (1)3.3V, 5V, 12V, and adjustable output versions; (2)Adjustable versiooutput voltage range, 1.2V to 37V (57V for HV version)±4% max over line and load conditions; (3)Guaranteed 0.5A output current; (4)Available i8-pisurface mount and DIP-8 package; (5)Input voltage range up to 60V; (6)150 kHz fixed frequency internal oscillator; (7)Shutdow/Soft-start; (8)Out of regulatioerror flag; (9)Error output delay; (10)Bias Supply Pi(VBS) for internal circuitry improves efficiency at high input voltages; (11)Low power standby mode, IQ typically 85 μA; (12)High Efficiency; (13)Uses readily available standard inductors; (14)Thermal shutdowand current limit protection.

Diagrams