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Fairchild Semiconductor - 200 mA CMOS LDO Regulators

Numéro de référence FAN2504
Description 200 mA CMOS LDO Regulators
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FAN2504 fiche technique
FAN2504, FAN2505
200 mA CMOS LDO Regulators
www.fairchildsemi.com
Features
• Ultra Low Power Consumption
• 200 mV dropout voltage at 200 mA
• 75 µA ground current at 200 mA
• Enable/Shutdown Control
• SOT23-5 package
• Thermal limiting
• 300 mA peak current
Applications
• Cellular Phones and accessories
• PDAs
• Portable cameras and video recorders
• Laptop, notebook and palmtop computers
Description
The FAN2504/05 family of micropower low-dropout voltage
regulators utilize CMOS technology to offer a new level of
cost-effective performance in GSM and TDMA cellular
handsets, Laptop and Notebook portable computers, and
other portable devices. Features include extremely low
power consumption and low shutdown current, low dropout
voltage, exceptional loop stability able to accommodate a
wide variety of external capacitors, and the compact SOT23-5
surface-mount package. The FAN2504/05 family of products
offer significant improvements over older BiCMOS designs
and are pin-compatible with many popular devices. The
output is thermally protected against overload.
The FAN2504 and FAN2505 devices are distinguished by
the assignment of pin 4:
FAN2504: pin 4 – ADJ, allowing the user to adjust the
output voltage over a wide range using an external voltage
divider.
FAN2504-XX: pin 4 – BYP, to which a bypass capacitor
may be connected for optimal noise performance. Output
voltage is fixed, indicated by the suffix XX.
FAN2505-XX: pin 4 – ERR, a flag which indicates that the
output voltage has dropped below the specified minimum
due to a fault condition.
The standard fixed output voltages available are 2.5V, 2.6V,
2.7V, 2.8V, 2.85V, 3.0V, and 3.3V. Custom output voltage are
also available: please contact your local Fairchild Sales
Office for information.
Block Diagrams
VIN
Bandgap
EN
Error
Amplifier
p
VOUT
ADJ
VIN
Bandgap
EN
Error
Amplifier
p
BYP
VOUT
FAN2504
Thermal
Sense
GND
VIN
Bandgap
FAN2504-XX
EN
Error
Amplifier
p
Thermal
Sense
ERR
VOUT
GND
FAN2505-XX
Thermal
Sense
GND
REV. 1.0.8 2/14/03

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