LM2591HV datasheet(6/20 Pages) NSC | SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator

Part Name

Description

LM2591HV

SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator ( 20 Page)

NSC

6 page

Typical Performance Characteristics (Circuit of Figure 1) (Continued)

Switching Frequency

ON/OFF Threshold Voltage

10129313

10129379

ON/OFF Pin Current (Sinking)

Internal Gain-Phase Characteristics

10129380

10129378

Continuous Mode Switching Waveforms

IN = 20V, VOUT = 5V, ILOAD =1A

L = 52 µH, C

OUT = 100 µF, COUT ESR = 100 m

Ω

Discontinuous Mode Switching Waveforms

IN = 20V, VOUT = 5V, ILOAD = 250 mA

L = 15 µH, C

OUT = 150 µF, COUT ESR=90 m

Ω

10129320

A: Output Pin Voltage, 10V/div.

B: Inductor Current 0.5A/div.

C: Output Ripple Voltage, 50 mV/div.

Horizontal Time Base: 2 µs/div.

10129319

A: Output Pin Voltage, 10V/div.

B: Inductor Current 0.25A/div.

C: Output Ripple Voltage, 100 mV/div.

Horizontal Time Base: 2 µs/div.

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