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LM2590HV-AQ Datasheet(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2590HV-AQ
Description  SIMPLE SWITCHER짰Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2590HV-AQ Datasheet(HTML) 8 Page - National Semiconductor (TI)

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Typical Performance Characteristics (Circuit of Figure 1) (Continued)
Continuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD =1A
L=52µH, C
OUT = 100 µF, COUT ESR = 100 m
Ω
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA
L=15µH, C
OUT = 150 µF, COUT ESR=90m
Ω
20097120
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.
20097119
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.
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA to 1A
L=52µH, C
OUT = 100 µF, COUT ESR = 100 m
Ω
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA to 1A
L=15µH, C
OUT = 150 µF, COUT ESR=90m
Ω
20097121
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 1A Load Pulse
Horizontal Time Base: 50 µs/div.
20097122
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 1A Load Pulse
Horizontal Time Base: 200 µs/div.
www.national.com
8


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