參數資料
型號: LM2591HVT-5.0
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
中文描述: 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PZFM5
封裝: TO-220, 5 PIN
文件頁數: 8/20頁
文件大小: 730K
代理商: LM2591HVT-5.0
Test Circuit and Layout Guidelines
Fixed Output Voltage Versions
10129324
Component Values shown are for V
IN
= 15V,
V
OUT
= 5V, I
LOAD
= 1A.
C
IN
470 μF, 50V, Aluminum Electrolytic Nichicon “PM Series”
C
OUT
220 μF, 25V Aluminum Electrolytic, Nichicon “PM Series”
D1
2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)
L1
68 μH, See Inductor Selection Procedure
Adjustable Output Voltage Versions
10129325
Select R
1
to be approximately 1 k
, use a 1% resistor for best stability.
Component Values shown are for V
IN
= 20V,
V
OUT
= 10V, I
LOAD
= 1A.
C
IN
:
— 470 μF, 35V, Aluminum Electrolytic Nichicon “PM Series”
C
OUT
:
— 220 μF, 35V Aluminum Electrolytic, Nichicon “PM Series”
D1 — 2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)
L1 — 100 μH, See Inductor Selection Procedure
R
1
— 1 k
, 1%
R
2
— 7.15k, 1%
C
FF
— 3.3 nF
Typical Values
C
SS
—0.1 μF
C
DELAY
—0.1 μF
R
PULL UP
— 4.7k (use 22k if V
OUT
is
45V)
Small signal Schottky diode to prevent damage to feedback pin by negative spike when output is shorted (C
FF
not being able to discharge immediately will
drag feedback pin below ground). Required if V
IN
>
40V
FIGURE 1. Standard Test Circuits and Layout Guides
L
www.national.com
8
相關PDF資料
PDF描述
LM2591HVS-3.3 SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2591HVS-ADJ SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2591HVT-ADJ SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2591HVT-3.3 SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2591HVS-5.0 SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
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