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LM2595 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM2595
Description  SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2595 Datasheet(HTML) 7 Page - National Semiconductor (TI)

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Typical Performance Characteristics (Circuit of Figure 1) (Continued)
Feedback Pin
Bias Current
DS012565-10
Continuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 1A
L = 68 µH, C
OUT = 120 µF, COUT ESR = 100 mΩ
DS012565-17
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.
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 600 mA
L = 22 µH, C
OUT = 220 µF, COUT ESR = 50 mΩ
DS012565-18
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.
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA to 750 mA
L = 68 µH, C
OUT = 120 µF, COUT ESR = 100 mΩ
DS012565-19
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 750 mA Load Pulse
Horizontal Time Base: 100 µs/div.
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V, ILOAD = 250 mA to 750 mA
L = 22 µH, C
OUT = 220 µF, COUT ESR = 50 mΩ
DS012565-20
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 750 mA Load Pulse
Horizontal Time Base: 200 µs/div.
www.national.com
7


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