Low-noise LDO regulator with output voltage adjustability, supporting 1A output current

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Power Management Products
The AP1155ADL is capable of supplying up to 1A of output current. It is a low-noise LDO regulator supporting a wide input voltage range while the output voltage is adjustable.
The AP1155ADL is the product of AP115x series, which are redesigned products of industry standards TK series that are low-noise and stable bipolar LDO regulators successfully adopted by many products.

● Low Noise

The AP1155ADL realizes high ripple rejection with low noise characteristics by adopting silicon monolithic bipolar architecture.

● Corresponded to High Power Applications

The AP1155ADL is capable of supplying 1A output current stably. It is housed in an HSOP-8 package with exposed-pad. Therefore, it has high heat radiation performance and is suitable for high power applications.

● Wide Output Voltage can be set

A suitable output voltage for the application can be selected in a range from 1.3V to 13.5V by external resistors.

Key Features

1. Operating Voltage Range 2.4 to 14.0V
2. Programmable Output Voltage 1.3 to 13.5V
3. Maximum Output Current 1A
4. Reference Voltage Precision 1.21V±35mV
5. Dropout Voltage 300mV at Iout=1A
6. Output Noise 35uVRMS(typ.) at 400Hz to 80kHz
7. Ripple Rejection Ratio 80dB(typ.) at 1kHz
8. Capable for very low noise applications
9. Available to use a small ceramic capacitor
10. On/Off control (Active High)
11. Over Current Protection and Thermal Shutdown Protection
12. Package HSOP-8 with Exposed-pad
13. Operating Temperature Range -40 to 85℃

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Block Diagram

Block Diagram

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