LM34923EVAL/NOPB National Semiconductor, LM34923EVAL/NOPB Datasheet - Page 16

• Manufacturer Part Number: LM34923EVAL/NOPB
• Description: BOARD EVALUATION FOR LM34923
• Manufacturer: National Semiconductor
• Series: -r

Specifications of LM34923EVAL/NOPB

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Power - Output: -
• Voltage - Output: 5V
• Current - Output: 500mA
• Voltage - Input: 6 ~ 75 V
• Regulator Topology: Buck
• Frequency - Switching: 200kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM34923
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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LOW OUTPUT RIPPLE CONFIGURATIONS
For applications where low output ripple is required, the fol-
lowing options can be used to reduce or nearly eliminate the
ripple.
a) Reduced ripple configuration: In
across R
pin. This allows the ripple at V
of 25 mVp-p by reducing R3, since the ripple at V
attenuated by the feedback resistors. The minimum value for
Cff is determined from:
FB2
to AC-couple the ripple at V
OUT
to be reduced to a minimum
Figure
FIGURE 5. Efficiency vs. Load Current and V
OUT
directly to the FB
7, Cff is added
FIGURE 6. Efficiency vs. V
OUT
is not
16
where t
minimum input voltage. The next larger standard value ca-
pacitor should be used for Cff.
ON(max)
IN
is the maximum on-time, which occurs at the
IN
30141724
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