LP38798 Reference Design Circuit | Linear Regulator Application Circuit

The LP38798 linear regulator is a high performance device that delivers 800mA of output current. This article mainly introduces the LP38798 features, application range, reference design circuit and circuit analysis to help you shorten the design time.

LP38798 Features: Ultra-low output noise: 5μVRMS (10Hz to 100kHz); current limit and overtemperature protection; excellent linear and load transient response; wide operating input voltage range: 3.0V to 20V

LP38798 Typical Applications: RF and VCO Power Supplies; Wireless LAN Devices; Wireless Cable Modems; Low Noise Post Rectifiers

LP38798 Reference Design Application Circuit:

Figure 1 Internal structure of LP38798

The LP38798-ADJ is a high-performance linear regulator capable of 800 mA output current regulator capable of 800 mA output current RF/Analog circuitry, the LP38798-ADJ implements a novel linear topology on an advanced CMOS process to deliver ultra-low output Noise and high PSRR at switching power supply frequencies.

Figure 2LP38798 reference design

The LP38798 is a positive voltage (20 V), ultra-low-noise (5 μVRMS), low-dropout (LDO) regulator capable of a well-regulated, low-noise voltage to an 800-mA load. The LP38798 uses an Advanced design with a CMOS process to deliver ultra low output noise and high PSRR at switching power supply (SMPS) frequencies.

LP38798 Datasheet: Click to download

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