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LM2591HV Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM2591HV
Description  SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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 6 page
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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
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 52 µH, C
OUT = 100 µF, COUT ESR = 100 m
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA
L = 15 µH, C
OUT = 150 µF, COUT ESR=90 m
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.
www.national.com
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