LM2585S-12 National Semiconductor, LM2585S-12 Datasheet - Page 19
LM2585S-12
Manufacturer Part Number
LM2585S-12
Description
DC/DC Converter IC
Manufacturer
National Semiconductor
Specifications of LM2585S-12
Input Voltage
40V
Output Voltage
12V
No. Of Pins
5
Peak Reflow Compatible (260 C)
No
Termination Type
SMD
Supply Voltage Max
40V
Leaded Process Compatible
No
Mounting Type
Through Hole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2585S-12
Manufacturer:
NS/国半
Quantity:
20 000
1251548
By adding a small number of external components (as shown in Figure 30), the LM2585 can be used to produce a regulated output voltage that is greater than
the applied input voltage. The switching waveforms observed during the operation of this circuit are shown in Figure 31. Typical performance of this regulator is
shown in Figure 32.
FIGURE 30. 12V Boost Regulator
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A: Switch Voltage, 10 V/div
B: Switch Current, 2 A/div
C: Inductor Current, 2 A/div
D: Output Ripple Voltage,
100 mV/div, AC-Coupled
Horizontal: 2 μs/div
FIGURE 31. Switching Waveforms
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FIGURE 32. V
Response to Load Current Step
OUT
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