Datasheet Linear Technology LT1129CST-3.3#PBF

ManufacturerLinear Technology
SeriesLT1129
Part NumberLT1129CST-3.3#PBF

Micropower Low Dropout Regulators with Shutdown

Datasheets

Datasheet LT1129, LT1129-3.3, LT1129-5
PDF, 181 Kb, Language: en, File uploaded: Sep 2, 2017, Pages: 16
Micropower Low Dropout Regulators with Shutdown
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Prices

Packaging

PackageSOT-223
Package CodeST
Package Index05-08-1630

Parametrics

Design ToolsLTspice File
Discrete Pass Elementno
Dropout Voltage0.45 V
Export Controlno
FeaturesShutdown
Ishutdown16 µA
Isupply0.05 mA
Max Junction Temp125 Deg
Number of Outputs1
Operating Temperature Range0 to 70 °C
Output Current0.7 A
Output VoltageAdj, 3.3, 5
PSRR64 dB
Theta JA30В°C/W (Q), 60В°C/W (S8), 50В°C/W (ST), 50В°C/W (T)
TypePNP
Vin Max30 V
Vin Min4.15 V
Vout Max30 V
Vout Min3.8 V

Eco Plan

RoHSCompliant

Application Notes

  • Power Conditioning for Notebook and Palmtop Systems &mdash AN51
    PDF, 260 Kb, File published: Aug 3, 1992
    Notebook and palmtop systems need a number of voltages developed from a battery. Competitive solutions require small size, high efficiency and light weight. This publication includes circuits for high efficiency 5V and 3.3V switching and linear regulators, back light display drivers and battery chargers. All the circuits are specifically tailored for the requirements outlined above.
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  • 5V to 3.3V Converters for Microprocessor Systems &mdash AN58
    PDF, 310 Kb, File published: Sep 1, 1993
    Many popular microprocessors operate from 3.3V supplies, yet they are used in systems where the predominate source of power is 5V. AN58 presents a collection of both linear and switching regulator solutions for conversion of 5V to 3.3V at currents ranging from 100mA to 20A. Applications information and a comparison of various bypass capacitor types is included. Most of the designs can be easily modified for other intermediate voltages such as 3.45V, 3.7V, and 4.1V.
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  • A Fourth Generation of LCD Backlight Technology &mdash AN65
    PDF, 5.9 Mb, File published: Nov 1, 1995
    This publication, LTC's fourth effort devoted to LCD backlighting in as many years, treats the subject comprehensively. The text considers lamps, display and layout induced losses, circuitry, efficiency related issues, optimization and measurement techniques. Twelve appended sections cover lamp types, mechanical design, electrical and photometric measurement, layout, circuitry and related topics.
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Design Notes

  • Techniques for Deriving 3.3V from 5V Supplies &mdash DN74
    PDF, 73 Kb, File published: Sep 1, 1993
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  • 5V to 3.3V Regulator with Fail-Safe Switchover &mdash DN82
    PDF, 74 Kb, File published: May 1, 1994
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  • 5V to 3.3V Circuit Collection &mdash DN91
    PDF, 74 Kb, File published: Nov 1, 1994
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Model Line

Manufacturer's Classification

  • Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO) | Extended Temperature (H & MP) Linear Regulators

Other Names:

LT1129CST-3.3PBF, LT1129CST-3.3 PBF, LT1129CST3.3#PBF, LT1129CST 3.3#PBF