LM2598S-ADJ/NOPB National Semiconductor, LM2598S-ADJ/NOPB Datasheet - Page 31

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LM2598S-ADJ/NOPB

Manufacturer Part Number
LM2598S-ADJ/NOPB
Description
IC REG SW ADJ 1A STP DN TO263-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet

Specifications of LM2598S-ADJ/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.2 ~ 37 V
Current - Output
1A
Frequency - Switching
150kHz
Voltage - Input
4.5 ~ 40 V
Operating Temperature
-25°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (7 leads + tab)
Package
8TO-263
Minimum Input Voltage
4.5 V
Maximum Input Voltage
40 V
Switching Frequency
173 KHz
Operating Supply Voltage
4.5 to 40 V
Maximum Output Current
1 A
Output Type
Adjustable
Output Voltage
1.2 to 37 V
Efficiency
78(Typ) %
For Use With
551011367-011 - BOARD WEBENCH BUILD IT LM2598
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2598S-ADJ
*LM2598S-ADJ/NOPB
LM2598S-ADJ
Application Information
C
C
D1 — 3A, 40V Schottky Rectifier, 1N5822
L1 — 68 µH, L30, Renco, Through hole
R1 — 1 k , 1%
R2 — Use formula in Design Procedure
IN
OUT
— 150 µF/50V, Aluminum Electrolytic, Panasonic “HFQ series”
— 120 µF/25V Aluminum Electrolytic, Panasonic “HFQ series”
TYPICAL THROUGH HOLE PC BOARD LAYOUT, ADJUSTABLE OUTPUT (1X SIZE), DOUBLE SIDED,
FIGURE 34. Adjustable Output PC Board Layout
(Continued)
THROUGH HOLE PLATED
31
C
R
R
C
C
FF
FF
PULL-UP
DELAY
SD/SS
— See Figure 4 .
— See Application Information Section (C
— 0.1 µF
— 0.1 µF
— 10 k
FF
Section)
DS012593-52
www.national.com

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