Datasheet
Typical Performance Characteristics (Circuit of
Figure 1
) (Continued)
Continuous Mode Switching Waveforms
V
IN
= 20V, V
OUT
= 5V, I
LOAD
=1A
L = 52 µH, C
OUT
= 100 µF, C
OUT
ESR = 100 mΩ
Discontinuous Mode Switching Waveforms
V
IN
= 20V, V
OUT
= 5V, I
LOAD
= 250 mA
L = 15 µH, C
OUT
= 150 µF, C
OUT
ESR=90mΩ
10134720
Horizontal Time Base: 2 µs/div.
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 50 mV/div.
10134719
Horizontal Time Base: 2 µs/div.
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.25A/div.
C: Output Ripple Voltage, 100 mV/div.
Load Transient Response for Continuous Mode
V
IN
= 20V, V
OUT
= 5V, I
LOAD
= 250 mA to 1A
L = 52 µH, C
OUT
= 100 µF, C
OUT
ESR = 100 mΩ
Load Transient Response for Discontinuous Mode
V
IN
= 20V, V
OUT
= 5V, I
LOAD
= 250 mA to 1A
L = 15 µH, C
OUT
= 150 µF, C
OUT
ESR=90mΩ
10134721
Horizontal Time Base: 50 µs/div.
A: Output Voltage, 100 mV/div. (AC)
B: 250 mA to 1A Load Pulse
10134722
Horizontal Time Base: 200 µs/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
7-Lead TO-220 (T)
Surface Mount Package
7-Lead TO-263 (S)
10134750
Order Number LM2590HVT-3.3, LM2590HVT-5.0,
or LM2590HVT-ADJ
See NS Package Number TA07B
10134723
Order Number LM2590HVS-3.3, LM2590HVS-5.0,
or LM2590HVS-ADJ
See NS Package Number TS7B
LM2590HV
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