LM2591HVSX-5.0 datasheet(10/31 Pages) TI1

No. de pieza	LM2591HVSX-5.0

Descripción Electrónicos	SIMPLE SWITCHER Power Converter Step-Down Voltage Regulator

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Fabricante Electrónico	TI1 [Texas Instruments]

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10

LM2591HV

SNVS074E – MAY 2001 – REVISED MAY 2016

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8 Parameter Measurement Information

8.1 Test Circuits

Component Values shown are for VIN = 15V,

VOUT = 5V, ILOAD = 1A.

CIN — 470 μF, 50V, Aluminum Electrolytic Nichicon “PM Series”

COUT — 220 μF, 25V Aluminum Electrolytic, Nichicon “PM Series”

D1

—

2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)

L1

—

68 H, See Inductor Selection Procedure

Figure 19. Fixed Output Voltage Versions

Select R1 to be approximately 1 kΩ, use a 1% resistor for best stability.

Component Values shown are for VIN = 20V,

VOUT = 10V, ILOAD = 1A.

CIN: — 470 μF, 35V, Aluminum Electrolytic Nichicon “PM Series”

COUT: — 220 μF, 35V Aluminum Electrolytic, Nichicon “PM Series”

D1 — 2A, 60V Schottky Rectifier, 21DQ06 (International Rectifier)

See Inductor Selection Procedure L1 — 100

μH,

R1 — 1 kΩ, 1%

R2 — 7.15k, 1%

CFF — 3.3 nF

Typical Values

CSS—0.1 μF

CDELAY—0.1 μF

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. Required

if VIN > 40V

Figure 20. Adjustable Output Voltage Versions

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LM2591HVSX-5.0 Datasheet(PDF) 10 Page - Texas Instruments

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