FAN2503 Fairchild Semiconductor, FAN2503 Datasheet
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FAN2503
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FAN2503 Summary of contents
Page 1
... FAN2502-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. FAN2503-XX: pin 4 – ERR, a flag which indicates that the output voltage has dropped below the specified minimum due to a fault condition. ...
Page 2
... V OUT OUT Pin Function Description FAN2502 Adjust. Ratio of potential divider from VOUT to ADJ determines output voltage. FAN2502-XX Bypass. Connect 470 pF capacitor for noise reduction. FAN2503-XX Error. Error flag output. 0: Output voltage < 95% of nominal. 1: Output voltage > 95% of nominal. Enable. 0: Shutdown V . OUT 1: Enable V ...
Page 3
... If this shutdown function is not needed, the pin can simply be connected to the V pin. Allowing this pin to IN float will cause erratic operation. Error Flag (FAN2503 only) To indicate conditions such as input voltage dropout (low V ), overheating, or overloading (excessive output cur- IN rent), the ERR pin indicates a fault condition open- ...
Page 4
... Component-side copper provides significantly better thermal performance for this surface-mount device, compared to that obtained when using only copper planes on the underside. FAN2502/FAN2503 , using an external resistor IN presented to the ADJ pin is fed to ADJ ...
Page 5
... FAN2502/FAN2503 Absolute Maximum Ratings Parameter Power Supply Voltages V (Measured to GND) IN Enable Input (EN) Applied voltage (Measured to GND) ERR Output Applied voltage (Measured to GND) Power 3 Dissipation Temperature Junction Lead Soldering (5 seconds) Storage 4 Electrostatic Discharge Notes: 1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if Operating Conditions are not exceeded ...
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... Logic Low Voltage IL V Logic High Voltage IH I Input Current High IH I Input Current Low I Switching Characteristics Parameter 4 Enable Input Response time Error Flag (FAN2503-XX) Response time Performance Characteristics Symbol Parameter Line regulation OUT Load regulation OUT OUT e Output noise ...
Page 7
... FAN2502/FAN2503 Typical Performance Characteristics Power Supply Rejection Ratio 100 I = 100 A OUT C = 1.0 F Cer. 80 OUT 4. 3.0V OUT 0 10 100 1k 10k 100k 1M 10M Frequency (Hz) Power Supply Rejection Ratio 100 I = 150mA OUT C = 1.0 F Cer. 80 OUT 4. 3.0V OUT 10k 100k 1M 10M ...
Page 8
... Dropout Voltage 150.00 120.00 90.00 60.00 30.00 0.00 0 100 125 150 Output Current (mA) Dropout Voltage 200 150 100 I = 150mA 125 -40 80 Temperature ( C) V OUT FAN2502/FAN2503 Ground Pin Current OUT I = 100 - 125 Temperature ( C) Dropout Characteristics 3.5 3 OUT 2.5 ...
Page 9
... FAN2502/FAN2503 Mechanical Dimensions 5-Lead SOT-23-5 (S) Package Inches Millimeters Symbol Min. Max. Min. A .035 .057 .90 A1 .000 .006 .00 B .008 .20 .020 c .003 .010 .08 D .106 .122 2.70 E .059 .071 1.50 e .037 BSC .95 BSC e1 .075 BSC 1.90 BSC H .087 .126 2.20 .004 .024 . ...
Page 10
... Width 7" 8mm 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. FAN2502/FAN2503 Package Marking AEA AEE AF3 12/17/10 0.0m 005 Stock#DS30002502 2010 Fairchild Semiconductor Corporation ...