LP5907 Reference Design Circuit | Low Dropout Regulator Application Circuit

The LP5907 Ultra Low Noise Low Dropout Regulator is a linear regulator that delivers 250mA of output current. This article mainly introduces the LP5907 features, application range, reference design circuit and circuit analysis to help you shorten the design time.

LP5907 characteristics: output current: 250mA; low output voltage noise: <10μVRMS; low dropout: usually 120mV

Typical application range of LP5907: mobile phone; PDA handset; wireless LAN device

LP5907 Reference Design Application Circuit:

Figure 1 LP5907 internal structure diagram

The LP5907 is a linear regulator capable of 250-mA output current. Designed to meet the requirements of RF and analog circuits, the LP5907 device provides low noise, high PSRR, low quiescent current, and low line or load transient response figures.

Figure 2LP5907 reference design

The EN pin voltage must be higher than the VIH threshold to ensure that the device is fully enabled under all operating conditions. The EN pin voltage must be lower than the VIL Threshold to ensure that the device is fully disabled and the automatic output discharge is activated.

LP5907 Datasheet: Click to download

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