Product Summary

The LM2577S-ADJ is a SIMPLE SWITCHER Step-Up Voltage Regulator. The LM2577S-ADJ provides all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device of the LM2577S-ADJ is available in three different output voltage versions: 12V, 15V, and adjustable. The applications of the LM2577S-ADJ include Simple boost regulator, Flyback and forward regulators, Multiple-output regulator.

Parametrics

LM2577S-ADJ absolute maximum ratings: (1)Supply Voltage: 45V; (2)Output Switch Voltage: 65V; (3)Output Switch Current (Note 2): 6.0A; (4)Power Dissipation: Internally Limited; (5)Storage Temperature Range: -65℃ to +150℃; (6)Lead Temperature: 260℃; (7)Maximum Junction Temperature: 150℃; (8)Minimum ESD Rating: 2kV; (9)Supply Voltage: 3.5V ≤ VIN ≤ 40V; (10)Output Switch Voltage: 0V ≤ VSWITCH ≤ 60V; (11)Output Switch Current: ISWITCH ≤ 3.0A; (12)Junction Temperature Range: -40℃ ≤ TJ ≤ +125℃.

Features

LM2577S-ADJ features: (1)Requires few external components; (2)NPN output switches 3.0A, can stand off 65V; (3)Wide input voltage range: 3.5V to 40V; (4)Current-mode operation for improved transient response, line regulation, and current limit; (5)52 kHz internal oscillator; (6)Soft-start function reduces in-rush current during start-up; (7)Output switch protected by current limit, under-voltage; (8)lockout, and thermal shutdown.

Diagrams

LM2577S-ADJ block diagram 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2577S-ADJ
LM2577S-ADJ
National Semiconductor (TI)
Switching Converters, Regulators & Controllers
Data Sheet
0-1: $4.21
1-25: $3.49
25-100: $3.18
100-250: $2.86
LM2577S-ADJ/NOPB
LM2577S-ADJ/NOPB
National Semiconductor (TI)
Switching Converters, Regulators & Controllers STEP-UP VLTG REG
Data Sheet
0-1: $3.98
1-25: $3.26
25-100: $2.94
100-250: $2.70