lm2590hvsx-adj National Semiconductor Corporation, lm2590hvsx-adj Datasheet - Page 7

• Manufacturer Part Number: lm2590hvsx-adj
• Description: Simple Switcher Power Converter 150 Khz 1a Step-down Voltage Regulator, With Features
• Manufacturer: National Semiconductor Corporation

Typical Performance Characteristics
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 50 mV/div.
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 1A Load Pulse
Connection Diagrams and Order Information
Bent and Staggered Leads, Through Hole Package
Load Transient Response for Continuous Mode
Order Number LM2590HVT-3.3, LM2590HVT-5.0,
L = 52 µH, C
L = 52 µH, C
V
IN
Continuous Mode Switching Waveforms
= 20V, V
V
Horizontal Time Base: 50 µs/div.
See NS Package Number TA07B
Horizontal Time Base: 2 µs/div.
IN
= 20V, V
OUT
OUT
OUT
or LM2590HVT-ADJ
7-Lead TO-220 (T)
= 100 µF, C
= 100 µF, C
= 5V, I
OUT
= 5V, I
LOAD
OUT
OUT
LOAD
= 250 mA to 1A
ESR = 100 m
ESR = 100 m
= 1A
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(Circuit of Figure 1 ) (Continued)
7
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.25A/div.
C: Output Ripple Voltage, 100 mV/div.
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 1A Load Pulse
Load Transient Response for Discontinuous Mode
Order Number LM2590HVS-3.3, LM2590HVS-5.0,
L = 15 µH, C
L = 15 µH, C
V
Discontinuous Mode Switching Waveforms
IN
V
= 20V, V
IN
Horizontal Time Base: 200 µs/div.
Horizontal Time Base: 2 µs/div.
See NS Package Number TS7B
= 20V, V
Surface Mount Package
OUT
OUT
or LM2590HVS-ADJ
OUT
7-Lead TO-263 (S)
OUT
= 150 µF, C
= 150 µF, C
= 5V, I
= 5V, I
LOAD
LOAD
OUT
OUT
= 250 mA to 1A
= 250 mA
ESR = 90 m
ESR = 90 m
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