LM2574 datasheet(10/24 Pages) NSC

tên linh kiện	LM2574

Giải thích chi tiết về linh kiện	SIMPLE SWITCHER??0.5A Step-Down Voltage Regulator

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Test Circuit and Layout Guidelines

As in any switching regulator, layout is very important. Rap-

idly switching currents associated with wiring inductance

generate voltage transients which can cause problems. For

minimal inductance and ground loops, the length of the leads

indicated by heavy lines should be kept as short as pos-

sible. Single-point grounding (as indicated) or ground plane

construction should be used for best results. When using the

Adjustable version, physically locate the programming resis-

tors near the regulator, to keep the sensitive feedback wiring

short.

Fixed Output Voltage Versions

DS011394-11

CIN — 22 µF, 75V

Aluminum Electrolytic

COUT — 220 µF, 25V

Aluminum Electrolytic

D1 — Schottky, 11DQ06

L1 — 330 µH, 52627

(for 5V in, 3.3V out, use

100 µH, RL-1284-100)

R1 — 2k, 0.1%

R2 — 6.12k, 0.1%

Adjustable Output Voltage Version

DS011394-12

FIGURE 2.

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Số phần tương tự - LM2574

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Micrel Semiconductor	LM2574	67Kb / 5P	52kHz Simple 0.5A Buck Regulator
Micrel Semiconductor	LM2574	41Kb / 8P	52KHZ SIMPLE 0.5A BUCK REGULATOR
ON Semiconductor	LM2574	279Kb / 28P	0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator February, 2002 ??Rev. 5
	LM2574	296Kb / 26P	0.5 A, Adjustable Output Voltage, Step?묭own Switching Regulator August, 2006 ??Rev. 8
	LM2574	3Mb / 4P	AC-DC Offline Switching Controllers/Regulators Rev.0, Jun-2005

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