LM3424BSTEVAL/NOPB National Semiconductor, LM3424BSTEVAL/NOPB Datasheet - Page 7

• Manufacturer Part Number: LM3424BSTEVAL/NOPB
• Description: BOARD EVAL BOOST LM3424
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3424BSTEVAL/NOPB

• Current - Output / Channel: 1A
• Outputs And Type: 1, Non-Isolated
• Features: Dimmable
• Voltage - Input: 10 ~ 26 V
• Utilized Ic / Part: LM3424
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3424BSTEVAL

5. INDUCTOR RIPPLE CURRENT
Solve for L1:
The closest standard inductor is 33 µH therefore Δi
Determine minimum allowable RMS current rating:
The chosen component from step 5 is:
6. OUTPUT CAPACITANCE
Solve for C
The closest capacitance totals 40 µF therefore Δi
Determine minimum allowable RMS current rating:
The chosen components from step 6 are:
7. PEAK CURRENT LIMIT
Solve for R
O
LIM
:
:
LED-PP
L-PP
is:
is:
7
The closest standard resistor is 0.04 Ω therefore I
The chosen component from step 7 is:
8. SLOPE COMPENSATION
Solve for R
The chosen component from step 8 is:
9. LOOP COMPENSATION
ω
ω
T
To ensure stability, calculate ω
Solve for C
To attenuate switching noise, calculate ω
U0
P1
Z1
is approximated:
is approximated:
is approximated:
SLP
CMP
:
:
P2
:
P3
:
www.national.com
LIM
is: