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PDF FAN2509 Data sheet ( Hoja de datos )

Número de pieza FAN2509
Descripción 50 mA CMOS LDO Regulators
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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No Preview Available ! FAN2509 Hoja de datos, Descripción, Manual

FAN2508, FAN2509
50 mA CMOS LDO Regulators
www.fairchildsemi.com
Features
• Ultra Low Power Consumption
• 50 mV dropout voltage at 50 mA
• 25 µA ground current at 50 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 FAN2508/09 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
Block Diagrams
VIN
Bandgap
EN
Error
Amplifier
p
VOUT
ADJ
FAN2508
Thermal
Sense
GND
VIN
Bandgap
wide variety of external capacitors, and the compact SOT23-5
surface-mount package. The FAN2508/09 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 FAN2508 and FAN2509 devices are distinguished by
the assignment of pin 4:
FAN2508: pin 4 – ADJ, allowing the user to adjust the
output voltage over a wide range using an external voltage
divider.
FAN2508-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.
FAN2509-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.
VIN
Bandgap
EN
Error
Amplifier
p
BYP
VOUT
FAN2508-XX
EN
Error
Amplifier
p
Thermal
Sense
ERR
VOUT
GND
FAN2509-XX
Thermal
Sense
GND
REV. 1.0.6 2/14/03

1 page




FAN2509 pdf
FAN2508/FAN2509
PRODUCT SPECIFICATION
Absolute Maximum Ratings (beyond which the device may be damaged)1
Parameter
Power Supply Voltages
VIN (Measured to GND)
Enable Input (EN)
Applied voltage (Measured to GND)2
ERR Output
Applied voltage (Measured to GND)2
Power
Dissipation3
Temperature
Junction
Lead Soldering (5 seconds)
Storage
Electrostatic Discharge4
Min Typ Max Unit
0 7V
0 7V
0 7V
Internally limited
-65 150 °C
260 °C
-65 150 °C
4 kV
Notes:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only
if Operating Conditions are not exceeded.
2. Applied voltage must be current limited to specified range.
3. Based upon thermally limited junction temperature:
PD = T----J---(-m---Θ-a---x-J--)A---–----T----A--
4. Human Body Model is 4kV minimum using Mil Std. 883E, method 3015.7. Machine Model is 400V minimum using JEDEC
method A115-A.
Recommended Operating Conditions
Parameter
VIN
VOUT
VEN
VERR
TJ
θJA
θJC
Input Voltage Range
Output Voltage Range, Adjustable
Enable Input Voltage
ERR Flag Voltage
Junction Temperature
Thermal resistance
Thermal resistance
Min
2.7
VREF
0
-40
Nom
220
130
Max
6.5
VIN-VDO
VIN
VIN
+125
Units
V
V
V
V
°C
°C/W
°C/W
REV. 1.0.6 2/14/03
5

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