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線性與低壓差 (LDO) 穩壓器

LP38798

現行

具啟用功能的 800-mA、20-V、低雜訊、高 PSRR 可調式低壓降電壓穩壓器

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產品規格表

LP38798

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output Iout (max) (A) 0.8 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 19.8 Vout (min) (V) 1.2 Noise (µVrms) 5 Iq (typ) (mA) 1.4 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 65 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.8 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 19.8 Vout (min) (V) 1.2 Noise (µVrms) 5 Iq (typ) (mA) 1.4 Thermal resistance θJA (°C/W) 35 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 65 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
WSON (DNT) 12 16 mm² 4 x 4
  • Wide Operating Input Voltage Range:
    3 V to 20 V
  • Ultra-Low Output Noise: 5 µVRMS
    (10 Hz to 100 kHz)
  • High PSRR: 90 dB at 10 kHz, 60 dB at 100 kHz
  • ±1% Output Voltage Initial Accuracy (TJ = 25°C)
  • Very Low Dropout: 200 mV (Typical) at 800 mA
  • Stable with Ceramic or Tantalum Output Capacitors
  • Excellent Line and Load Transient Response
  • Current Limit and Overtemperature Protection
  • Create a Custom Design Using the LP38798 With the WEBENCH Power Designer
  • Wide Operating Input Voltage Range:
    3 V to 20 V
  • Ultra-Low Output Noise: 5 µVRMS
    (10 Hz to 100 kHz)
  • High PSRR: 90 dB at 10 kHz, 60 dB at 100 kHz
  • ±1% Output Voltage Initial Accuracy (TJ = 25°C)
  • Very Low Dropout: 200 mV (Typical) at 800 mA
  • Stable with Ceramic or Tantalum Output Capacitors
  • Excellent Line and Load Transient Response
  • Current Limit and Overtemperature Protection
  • Create a Custom Design Using the LP38798 With the WEBENCH Power Designer

The LP38798-ADJ is a high-performance, low-noise LDO that can supply up to 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 µF for stability.

The LP38798-ADJ can operate over a wide input voltage range (3 V to 20 V) making it well suited for many post-regulation applications.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP38798-ADJ is a high-performance, low-noise LDO that can supply up to 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 µF for stability.

The LP38798-ADJ can operate over a wide input voltage range (3 V to 20 V) making it well suited for many post-regulation applications.

For all available packages, see the orderable addendum at the end of the data sheet.

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類型 標題 日期
* Data sheet LP38798 800-mA Ultra-Low-Noise, High-PSRR LDO datasheet (Rev. F) PDF | HTML 2017年 1月 24日
Application note A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27日
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 2018年 3月 21日
Technical article Decrease power consumption with an LDO PDF | HTML 2016年 7月 19日
EVM User's guide LP38798EVM User's Guide 2013年 3月 26日

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模擬型號

LP38798 PSpice Transient Model

SNOM471.ZIP (20 KB) - PSpice Model
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模擬型號

LP38798 Unencrypted PSpice Transient Model

SNOM559.ZIP (1 KB) - PSpice Model
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