LTC1844
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LTC1844

150mA, Micropower, Low Noise, VLDO Linear Regulator

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LTspice LTC1844 - LDO Linear Regulators Download 1.05 KB
Part Models 14
1ku List Price Starting From $1.58
Features
  • Very Low Dropout:
    • 90mV at 150mA
    • 30mV at 50mA (LTC1844-3.3)
  • Wide Input Voltage Range: 1.6V to 6.5V
  • Low 35µA Supply Current, Even in Dropout
  • Low Noise: 60µVRMS (10Hz to 100kHz)
  • ±1.75% Voltage Accuracy Over Temperature, Voltage and Current Ranges
  • Fast Transient Response
  • 10nA Supply Current in Shutdown
  • Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 2.8V, 3.3V
  • Adjustable Output Voltage: 1.25V to 6V
  • Output Current Limit
  • Reverse-Battery and Reverse-Current Protection
  • No Protection Diodes Needed
  • Stable with 1µF Output Capacitor
  • Stable with Ceramic Capacitors
  • Short-Circuit and Thermal Overload Protection
  • Low Profile (1mm) SOT-23 Package
Additional Details
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The LTC1844 Series are low noise VLDO™ (very low dropout) linear regulators designed for low power/portable applications. These regulators can operate from input voltages as low as 1.6V. Typical output noise is only 30µVRMS and typical dropout for the LTC1844-3.3 is just 90mV at the maximum load current of 150mA, reducing to 30mV at 50mA.

The internal P-channel MOSFET pass transistor requires no base current, allowing the device to draw only 35µA during normal operation, independent of the dropout voltage and load current. The quiescent current falls to a negligible 10nA during shutdown.

Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1µF, reverse-battery and reverse-current protection, short-circuit and thermal overload protection and output current limiting.

The LTC1844 regulators are available in a low profile (1mm) SOT-23 (ThinSOT™) package.

Applications

  • Portable Instruments and Battery-Powered Systems
  • Bluetooth/802.11 Cards
  • Cellular Phones
  • PDAs and Notebook Computers
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file View Data Sheet
Documentation View All Documentation
LTspice LTC1844 - LDO Linear Regulators Download 1.05 KB
Part Models 14
1ku List Price Starting From $1.58
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LTC1844

Documentation

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Data Sheet

1

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UPDATED 08/31/2007
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LTC1844: 150mA, Micropower, Low Noise, VLDO Linear Regulator Data Sheet

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207.00K
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User Guide

1

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UPDATED 09/24/2009
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DC660A - Demo Manual redirect icon

496.00K

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Reliability Data

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UPDATED 03/23/2018
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R421 Reliability Data redirect icon

66.89 K

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Technical Articles

3

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UPDATED 11/01/2004
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Power Supply Tracking for Linear Regulators redirect icon

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UPDATED 11/01/2004
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リニア・レギュレータの電源トラッキングを実現する redirect icon

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UPDATED 02/01/2004
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Efficient, Flexible Boost Converter Fits into Charge-Pump Footprint redirect icon

Application Note

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UPDATED 09/01/2019
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AN-140: Basic Concepts of Linear Regulator and Switching Mode Power Supplies redirect icon

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UPDATED 09/01/2019
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AN-140：线性调节器和开关模式电源的基本概念 redirect icon

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UPDATED 09/01/2019
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AN-140: リニア・レギュレータとスイッチング電源の基本概念 redirect icon

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Documentation

Technical Documents 6
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Data Sheet 1

LTC1844: 150mA, Micropower, Low Noise, VLDO Linear Regulator Data Sheet

Reliability Data 1

R421 Reliability Data

User Guide 1

DC660A - Demo Manual

Application Note 1

AN-140: Basic Concepts of Linear Regulator and Switching Mode Power Supplies

Technical Articles 2

Power Supply Tracking for Linear Regulators
Efficient, Flexible Boost Converter Fits into Charge-Pump Footprint

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1844ES5-1.5#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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LTC1844ES5-1.5#TRPBF 5-Lead TSOT-23 external-link
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  • Reliablity Data external-link
LTC1844ES5-1.8#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-1.8#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-2.5#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-2.5#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-2.8#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-2.8#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-3.3#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-3.3#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-BYP#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-BYP#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-SD#TRMPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1844ES5-SD#TRPBF 5-Lead TSOT-23 external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link

Software & Part Ecosystem

Evaluation Kits 1

reference details image

DC660A

LTC1844ES5-BYP | Low Noise Micropower Linear Voltage Regulator, VIN = 1.8V - 6.5V, VOUT = 150mA Max.

Evaluation Kits1

evaluation kit item images

DC660A

LTC1844ES5-BYP | Low Noise Micropower Linear Voltage Regulator, VIN = 1.8V - 6.5V, VOUT = 150mA Max.

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LTC1844 - LDO Linear Regulators Download

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