NCP156 The NCP156 -Design hints Design Note
●This design note provides better understanding of design constrains that need to be kept in mind in order to achieve the best NCP156 performance. Some additional non-obvious aspects of NCP156 concept are explained.
●The NCP156 is a dual linear regulator optimized for camera sensor applications. It provides power supplies for digital sensor core (DVDD) as well as for analog rail (AVDD). General supply requirements for the digital line are high current, low output voltage (typ. 1.2 V) and as low dropout as possible to maximize efficiency and reduce power dissipation in image sensor array vicinity. Analog supply rail requirements are almost opposite. Currents are lower, voltages are higher (typ. 2.8 V) and the output voltage needs to be very stable and clean. Main parameters are high PSRR over wide frequency range, ultra-low noise and excellent transient response (especially load transient).There is also high pressure to reduce size and cost of the power supply solution, because the camera modules are getting smaller and cheaper themselves.NCP156 offers unique combination of N-MOS and P-MOS linear regulators inside small 6-bumbs WLCSP package.It also reduces the number of external components as much as possible. Figure 1 shows typical application schematic.
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NCP156 、 JMK107B7105KA-T 、 JMK227B7105KA-T 、 NCP156xxFCTxxxxxxT2G |
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[ Consumer ] |
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Application note & Design Guide |
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Please see the document for details |
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WLCSP |
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English Chinese Chinese and English Japanese |
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March 2018 |
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Rev. 0 |
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DN05110/D |
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771 KB |
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