FAN5234QSCX ,Product informationGeneral Description•Wide input voltage range (2 to 24V) for Mobile systems The FAN5234 PWM controll ..
FAN5235 ,System Electronics Regulator for Mobile PCsFeatures Description• Synchronous rectification The FAN5235 is a high efficiency and high precision • ..
FAN5235MTC ,System Electronics Regulator for Mobile PCsFeatures Description• Synchronous rectification The FAN5235 is a high efficiency and high precision • ..
FAN5235MTC ,System Electronics Regulator for Mobile PCsFeatures Description• Synchronous rectification The FAN5235 is a high efficiency and high precision • ..
FAN5235MTCX ,System Electronics Regulator for Mobile PCs FAN5235System Electronics Regulator for Mobile PCs
FAN5235QSC ,System Electronics Regulator for Mobile PCs FAN5235System Electronics Regulator for Mobile PCs
FIN1532MTC ,5V LVDS 4-Bit High Speed Differential ReceiverFeaturesThis quad receiver is designed for high speed intercon-
FAN5234MTC-FAN5234MTCX-FAN5234QSC-FAN5234QSCX
Product information
Features•Wide input voltage range (2 to 24V) for Mobile systems Excellent dynamic response with Voltage Feed-Forward
and Average Current Mode control Lossless current sensing on low-side MOSFET or
precision over-current using sense resistor VCC Under-voltage Lockout
•Power-Good Signal Light load Hysteretic mode maximizes efficiency QSOP16, TSSOP16 300Khz or 600Khz operation
Applications Mobile PC regulator Hand-Held PC power
General DescriptionThe FAN5234 PWM controller provides high efficiency and
regulation with an adjustable output from 0.9V to 5.5V that
are required to power I/O, chip-sets, memory banks or
peripherals in high-performance notebook computers, PDAs
and Internet appliances. Synchronous rectification and
hysteretic operation at light loads contribute to a high
efficiency over a wide range of loads. The hysteretic mode of
operation can be disabled if PWM mode is desired for all
load levels. Efficiency is even further enhanced by using
MOSFET’s R
DS(ON)
as a current sense component.
Feed-forward ramp modulation, average current mode
control, and internal feedback compensation provide fast
response to load transients. The FAN5234 monitors these
outputs and generates a PGOOD (power good) signal when
the soft-start is completed and the output is within ±10% of
its set point. A built-in over-voltage protection prevents the
output voltage from going above 120% of the set point.
Normal operation is automatically restored when the over-
voltage conditions go away. Under-voltage protection latches
the chip off when the output drops below 75% of its set value
after the soft-start sequence is completed. An adjustable
over-current function monitors the output current by sensing
the voltage drop across the lower MOSFET.
