LM2577N-ADJ National Semiconductor, LM2577N-ADJ Datasheet - Page 14

• Manufacturer Part Number: LM2577N-ADJ
• Description: IC, STEP-UP VOLTAGE REGULATOR, 16-DIP
• Manufacturer: National Semiconductor

Specifications of LM2577N-ADJ

• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Voltage: 37V
• Output Current: 3A
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage Range: 3.5V To 40V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LM1577-ADJ, LM2577-ADJ Test Circuit
01146809
L = 415-0930 (AIE)
D = any manufacturer
C
= Sprague Type 673D
OUT
Electrolytic 680 µF, 20V
R1 = 48.7k in series with 511Ω (1%)
R2 = 5.62k (1%)
Note: Pin numbers shown are for TO-220 (T) package
FIGURE 3. Circuit Used to Specify System Parameters for ADJ Versions
Application Hints
01146810
Note: Pin numbers shown are for TO-220 (T) package
*Resistors are internal to LM1577/LM2577 for 12V and 15V versions.
FIGURE 4. LM1577/LM2577 Block Diagram and Boost Regulator Application
www.national.com
14