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AN7709SP
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Product Detailed Parameters
- Description：IC REG LINEAR 9V 1.2A SP-3SUA
- Series：-
- Mfr：Panasonic Electronic Components
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：9V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：1.2A
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：-
- PSRR：65dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：25°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：SP-3SUA
- Grade：-
- Qualification：-
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Overview
The AN7709SP is a 3-pin, positive output, low dropout voltage regulator from the AN77xxSP series. It provides a fixed 9 V output and supports an input supply voltage range of 10 V to 20 V. The device is designed for battery-driven equipment and appliances with significant supply voltage fluctuations. It features a minimum I/O voltage difference of 0.5 V typical and can deliver up to 1.2 A of output current. The silicon monolithic bipolar IC includes on-chip overcurrent limiting, thermal protection, inrush current protection, and input short-circuit protection.
Feature Summary
- Integrated on-chip overcurrent limiter and thermal protection circuit
- Built-in inrush current protection during input voltage start-up
- Input short-circuit protection circuit prevents current flow when input pin is grounded
- Low dropout performance with a typical minimum I/O voltage difference of 0.5 V
Applications
- Power supply equipment
Procurement Notes
Verify the specific product lifecycle stage before procurement, as this component falls under maintenance or discontinued categories. Consult Panasonic's official website for the most current status information. Confirm that the application environment remains within standard electronic equipment parameters, as the datasheet explicitly states the device is not applicable to automotive electronic parts. Ensure all design constraints regarding absolute maximum ratings are strictly adhered to.
Selection Notes
Select this regulator for applications requiring a stable 9 V output from a 10 V to 20 V input source. It is suitable for general-purpose power supplies where space efficiency is needed due to its surface mount package. Designers must ensure the use of appropriate external capacitors, specifically a 33 μF output capacitor with recommended ESR characteristics, to maintain stability and prevent oscillation at low temperatures.
Part Context
The AN7709SP belongs to the AN77xxSP series of low dropout regulators manufactured by Panasonic Electronic Components. This series is characterized by its ability to handle great fluctuations in supply voltage, making it robust for various industrial and home appliance applications. The SP-3SUA package code indicates a 3-pin plastic surface mount power package, facilitating integration into compact circuit designs.
Replacement Considerations
The datasheet notes that conventional three-pin regulators like the AN78xx/SP series may require external protection diodes if the input pin is shorted to ground. The AN77xxSP series eliminates this requirement through built-in input short-circuit protection. When replacing older components, verify that the new design does not rely on external diodes previously necessary for element safeguarding.
