參數(shù)資料
型號(hào): LM2592HVADJMWC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC
封裝: WAFER
文件頁(yè)數(shù): 23/24頁(yè)
文件大?。?/td> 720K
代理商: LM2592HVADJMWC
Test Circuit and Layout Guidelines
Fixed Output Voltage Versions
10129424
Component Values shown are for VIN = 15V,
VOUT = 5V, ILOAD = 2A.
CIN
470 F, 50V, Aluminum Electrolytic Nichicon “PM Series”
COUT
220 F, 25V Aluminum Electrolytic, Nichicon “PM Series”
D1
3.3A, 60V Schottky Rectifier, 31DQ06 (International Rectifier)
L1
33 H, See Inductor Selection Procedure
Adjustable Output Voltage Versions
10129425
Select R1 to be approximately 1 k, use a 1% resistor for best stability.
Component Values shown are for VIN = 20V,
VOUT = 10V, ILOAD = 2A.
CIN:
— 470 F, 35V, Aluminum Electrolytic Nichicon “PM Series”
COUT:
— 220 F, 35V Aluminum Electrolytic, Nichicon “PM Series”
D1 — 3.3A, 60V Schottky Rectifier, 31DQ06 (International Rectifier)
L1 — 47 H, See Inductor Selection Procedure
R1 —1 k,1%
R2 — 7.15k, 1%
CFF — 3.3 nF
Typical Values
CSS — 0.1 F
CDELAY — 0.1 F
RPULL UP — 4.7k (use 22k if VOUT is ≥ 45V)
Small signal Schottky diode to prevent damage to feedback pin by negative spike when output is shorted (CFF not being able to discharge immediately will
drag feedback pin below ground). Required if VIN > 40V
FIGURE 1. Standard Test Circuits and Layout Guides
LM2592HV
www.national.com
8
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