參數(shù)資料
型號(hào): LM2597-ADJMDC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC
封裝: DIE
文件頁(yè)數(shù): 26/40頁(yè)
文件大?。?/td> 1019K
代理商: LM2597-ADJMDC
Application Information (Continued)
TYPICAL SURFACE MOUNT PC BOARD LAYOUT, FIXED OUTPUT (2X size)
DS012440-54
CIN
— 10 F, 35V, Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
COUT
— 100 F, 10V Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
D1
— 1A, 40V Surface Mount Schottky Rectifier
L1
— Surface Mount Inductor, Coilcraft DO33
CSS
— Soft-start Capacitor (surface mount ceramic chip capacitor)
CD
— Delay Capacitor (surface mount ceramic chip capacitor)
R3
— Error Flag Pullup Resistor (surface mount chip resistor)
TYPICAL SURFACE MOUNT PC BOARD LAYOUT, ADJUSTABLE OUTPUT (2X size)
DS012440-55
CIN
— 10 F, 35V, Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
COUT — 68 F, 20V Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
D1
— 1A, 40V Surface Mount Schottky Rectifier
L1
— Surface Mount Inductor, Coilcraft DO33
CSS
— Soft-start Capacitor (surface mount ceramic chip capacitor)
CD
— Delay Capacitor (surface mount ceramic chip capacitor)
CFF
— Feedforward Capacitor (surface mount ceramic chip capacitor)
R1
— Output Voltage Program Resistor (surface mount chip resistor)
R2
— Output Voltage Program Resistor (surface mount chip resistor)
R3
— Error Flag Pullup Resistor (surface mount chip resistor)
FIGURE 35. 2X Printed Circuit Board Layout
LM2597/LM2597HV
www.national.com
32
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