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LM2597M-ADJ Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2597M-ADJ
Description  SIMPLE SWITCHER Power Converter 150 kHz 0.5A 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)

LM2597M-ADJ Datasheet(HTML) 7 Page - National Semiconductor (TI)

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Typical Performance Characteristics (Continued)
V
IN and VBS Current vs
V
BS and Temperature
DS012440-17
Soft-start Response
DS012440-18
Shutdown /Soft-start
Threshold Voltage
DS012440-25
Continuous Mode Switching Waveforms
V
IN = 20V, VOUT =5V, ILOAD = 400 mA
L = 100 µH, C
OUT = 120 µF, COUT ESR = 140 mΩ
DS012440-19
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.2A/div.
C: Output Ripple Voltage, 20 mV/div.
Horizontal Time Base: 2 µs/div.
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT =5V, ILOAD = 200 mA
L = 33 µH, C
OUT = 220 µF, COUT ESR=60 mΩ
DS012440-20
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.2A/div.
C: Output Ripple Voltage, 20 mV/div.
Horizontal Time Base: 2 µs/div.
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT =5V, ILOAD = 200 mA to 500 mA
L = 100 µH, C
OUT = 120 µF, COUT ESR = 140 mΩ
DS012440-21
A: Output Voltage, 50 mV/div. (AC)
B: 200 mA to 500 mA Load Pulse
Horizontal Time Base: 50 µs/div.
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT =5V, ILOAD = 100 mA to 200 mA
L = 33 µH, C
OUT = 220 µF, COUT ESR=60 mΩ
DS012440-22
A: Output Voltage, 50 mV/div. (AC)
B: 100 mA to 200 mA Load Pulse
Horizontal Time Base: 200 µs/div.
www.national.com
7


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