器件名称: LP38798
功能描述: LP38798-ADJ High PSRR, Ultra Low Noise, 800mA Linear Voltage Regulator for RF/Analog Circuits
文件大小: 1833.61KB 共21页
简 介:LP38978-ADJ
www.ti.com SNOSCT6A – MARCH 2013 – REVISED APRIL 2013
LP38798-ADJ High PSRR, Ultra Low Noise, 800mA Linear Voltage Regulator for RF/Analog Circuits
Check for Samples: LP38978-ADJ
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FEATURES
Ultra-Low Output Noise: 5 VRMS (10Hz to 100 kHz) High PSRR: 90dB at 10 kHz, 60dB at 100 kHz Wide Operating Input Voltage Range: 3.0V to 20V ±1.0% Output Voltage Initial Accuracy (TJ = 25°C) Very Low Dropout : 200 mV (Typical) at 800mA Stable with Ceramic or Tantalum Output Capacitors Excellent Line and Load Transient Response Current Limit and Over-Temperature Protection
DESCRIPTION
The LP38798-ADJ is a high performance linear regulator capable of supplying 800 mA output current. Designed to meet the requirements of sensitive 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. The LP38798SD-ADJ is stable with both ceramic and tantalum output capacitors and requires a minimum output capacitance of only 1 F for stability. The LP38798-ADJ can operate over a wide input voltage range (3.0V to 20V) making it well suited for many post-regulation applications. The LP38798-ADJ is available in a 12-Lead WSON package (4.0 x 4.0 x 0.8 mm) with Thermal Pad.
APPLICATIONS
RF and VCO Power Wireless LAN Devices Wireless Cable Modems Low Noise Post-Regulation
Typical Application Circuit
1 IN OUT 12
VIN
2
IN
OUT
11
VOUT
3 + CIN CCP 5
IN(C……
