LP38798SDX-ADJ/NOPB
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Texas Instruments LP38798SDX-ADJ/NOPB

Manufacturer No:
LP38798SDX-ADJ/NOPB
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC REG LIN POS ADJ 800MA 12WSON
Delivery:
Payment:
iso14001
iso45001
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Product Introduction

Overview

The LP38798SDX-ADJ/NOPB is a high-performance, low-noise Linear Voltage Regulator (LDO) manufactured by Texas Instruments. This adjustable LDO is designed to meet the stringent requirements of sensitive RF and analog circuitry. It utilizes a novel linear topology on an advanced CMOS process to deliver ultra-low output noise and high Power Supply Rejection Ratio (PSRR) at switching power supply frequencies. The LP38798SDX-ADJ/NOPB can supply up to 800 mA of output current and is stable with both ceramic and tantalum output capacitors, requiring a minimum output capacitance of only 1 µF for stability.

Key Specifications

ParameterValue
PackageWSON (DNT) with 12 pins
Operating Input Voltage Range3 V to 20 V
Output CurrentUp to 800 mA
Output Noise5 µV RMS (10 Hz to 100 kHz)
PSRR90 dB at 10 kHz, 60 dB at 100 kHz
Output Voltage Initial Accuracy±1% at TJ = 25°C
Dropout Voltage200 mV (Typical) at 800 mA
Operating Temperature Range-40°C to 125°C
Output Capacitor StabilityStable with ceramic or tantalum capacitors, minimum 1 µF

Key Features

  • Wide operating input voltage range: 3 V to 20 V
  • Ultra-low output noise: 5 µV RMS (10 Hz to 100 kHz)
  • High PSRR: 90 dB at 10 kHz, 60 dB at 100 kHz
  • ±1% output voltage initial accuracy at TJ = 25°C
  • Very low dropout voltage: 200 mV (Typical) at 800 mA
  • Stable with ceramic or tantalum output capacitors
  • Excellent line and load transient response
  • Current limit and overtemperature protection
  • Custom design capability using the WEBENCH Power Designer

Applications

The LP38798SDX-ADJ/NOPB is well-suited for various applications requiring low noise and high PSRR, including:

  • Sensitive RF and analog circuitry
  • Post-regulation applications
  • High-performance audio and video systems
  • Medical devices requiring low noise power supplies
  • Industrial control systems

Q & A

  1. What is the maximum output current of the LP38798SDX-ADJ/NOPB? The maximum output current is up to 800 mA.
  2. What is the operating input voltage range of the LP38798SDX-ADJ/NOPB? The operating input voltage range is from 3 V to 20 V.
  3. What is the output noise of the LP38798SDX-ADJ/NOPB? The output noise is 5 µV RMS (10 Hz to 100 kHz).
  4. What is the PSRR of the LP38798SDX-ADJ/NOPB? The PSRR is 90 dB at 10 kHz and 60 dB at 100 kHz.
  5. What type of output capacitors is the LP38798SDX-ADJ/NOPB stable with? It is stable with both ceramic and tantalum output capacitors.
  6. What is the minimum output capacitance required for stability? The minimum output capacitance required is 1 µF.
  7. Does the LP38798SDX-ADJ/NOPB have overtemperature protection? Yes, it includes current limit and overtemperature protection.
  8. Can the LP38798SDX-ADJ/NOPB be used in high-performance audio systems? Yes, it is suitable for high-performance audio and video systems due to its low noise and high PSRR.
  9. What tool can be used to create a custom design with the LP38798SDX-ADJ/NOPB? The WEBENCH Power Designer can be used to create custom designs.
  10. What is the operating temperature range of the LP38798SDX-ADJ/NOPB? The operating temperature range is -40°C to 125°C.

Product Attributes

Output Configuration:Positive
Output Type:Adjustable
Number of Regulators:1
Voltage - Input (Max):20V
Voltage - Output (Min/Fixed):1.2V
Voltage - Output (Max):19.8V
Voltage Dropout (Max):1.1V @ 800mA
Current - Output:800mA
Current - Quiescent (Iq):1.4 mA
Current - Supply (Max):2.2 mA
PSRR:60dB (1kHz)
Control Features:Enable
Protection Features:Over Current, Over Temperature, Short Circuit
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:12-WFDFN Exposed Pad
Supplier Device Package:12-WSON (4x4)
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Similar Products

Part Number LP38798SDX-ADJ/NOPB LP38788SDX-ADJ/NOPB LP3878SDX-ADJ/NOPB LP38798SD-ADJ/NOPB LP38798SDE-ADJ/NOPB
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active
Output Configuration Positive - Positive Positive Positive
Output Type Adjustable - Adjustable Adjustable Adjustable
Number of Regulators 1 - 1 1 1
Voltage - Input (Max) 20V - 16V 20V 20V
Voltage - Output (Min/Fixed) 1.2V - 1V 1.2V 1.2V
Voltage - Output (Max) 19.8V - 5.5V 19.8V 19.8V
Voltage Dropout (Max) 1.1V @ 800mA - 1.1V @ 800mA 0.42V @ 800mA 1.1V @ 800mA
Current - Output 800mA - 800mA 800mA 800mA
Current - Quiescent (Iq) 1.4 mA - 1.5 mA 1.4 mA 1.4 mA
Current - Supply (Max) 2.2 mA - 15 mA 2.2 mA 2.2 mA
PSRR 60dB (1kHz) - 60dB (1kHz) 60dB (1kHz) 60dB (1kHz)
Control Features Enable - Enable Enable Enable
Protection Features Over Current, Over Temperature, Short Circuit - Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C - -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 12-WFDFN Exposed Pad 12-WFDFN Exposed Pad 8-WDFN Exposed Pad 12-WFDFN Exposed Pad 12-WFDFN Exposed Pad
Supplier Device Package 12-WSON (4x4) 12-WSON (4x4) 8-WSON (4x4) 12-WSON (4x4) 12-WSON (4x4)

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