LM3477MM National Semiconductor, LM3477MM Datasheet - Page 22

• Manufacturer Part Number: LM3477MM
• Description: Pulse Width Modulation (PWM) Controller IC
• Manufacturer: National Semiconductor

Specifications of LM3477MM

• Input Voltage Primary Min: 2.95V
• Mounting Type: Surface Mount
• Topology: Buck (Step Down)
• Control Mode: Current
• Duty Cycle Max: 93%
• Input Voltage Primary Max: 35V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Compensation
(Continued)
22
A third option is to strategically place the ESR zero f
the output capacitor to cancel out the sampling pole. In this
case, the capacitor C
f
this will depend on how low Q is.
ESR
should be placed around the crossover frequency f
C2
will not be used to cancel out f
ESR
c
ESR
, but
of
.