Datasheet Linear Technology LT1170CQ#TRPBF

ManufacturerLinear Technology
SeriesLT1170
Part NumberLT1170CQ#TRPBF

100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators

Datasheets

LT1170/LT1171/LT1172 - 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
PDF, 339 Kb, Revision: I, File uploaded: Sep 3, 2017
Extract from the document

Prices

Packaging

PackageDDPAK-5
Package CodeQ
Package Index05-08-1461

Parametrics

ArchitectureConstant Frequency Current Mode
Design ToolsLTspice File
Export Controlno
FeaturesExternal Synchronization
Frequency100 kHz
Frequency Sync Range120kHz - 160kHz
Integrated Inductorno
Ishutdown50 µA
Isupply6 mA
Monolithicyes
Number of Outputs1
Operating Temperature Range0 to 70 °C
Polyphaseno
Switch Current5 A
Synchronousno
TopologyBoost, Flyback, Sepic
Vin Max40 V
Vin Min3 V
Vin Min Startup3 V
Vout Max40 V
Vout Min1.244 V
Vswitch Max65 V

Eco Plan

RoHSCompliant

Other Options

LT1170HV LT1171 LT1171HV LT1172 LT1172HV

Application Notes

  • Illumination Circuitry for Liquid Crystal Displays &mdash AN49
    PDF, 5.3 Mb, File published: Aug 23, 1992
    Current generation portable computers and instruments utilize backlit liquid crystal displays. The back light requires a highly efficient, high voltage AC source as well as other supply circuitry. AN49 details these circuits and also includes sections on efficiency measurements and instrumentation considerations. A separate section discusses physical and layout considerations for the display.
  • 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.
    Extract from the document
  • Techniques for 92% Efficient LCD Illumination &mdash AN55
    PDF, 688 Kb, File published: Aug 1, 1993
    This publication details several LCD backlight circuits which feature 92% efficiency. Other benefits include low voltage operation, synchronizing capability, higher output power for color displays, and extended dimming range. Extensive coverage of practical issues includes layout problems, multi-lamp displays, safety and reliability concerns and efficiency and photometric measurements. Also included is a review of circuits which did not work along with appropriate commentary.
    Extract from the document
  • Practical Circuitry for Measurement and Control Problems &mdash AN61
    PDF, 1.1 Mb, File published: Aug 1, 1994
    This collection of circuits was worked out between June 1991 and July of 1994. Most were designed at customer request or are derivatives of such efforts. Types of circuits include power converters, transducer signal conditioners, amplifiers and signal generators. Specific circuits include low noise amplifiers, high power single cell DC/DC converters, portable high accuracy barometers, a 10mHz 1% accuracy RMS/DC converter, and random noise generators. Appended sections cover noise theory and present a historical perspective of wideband amplifiers.
    Extract from the document
  • 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.
    Extract from the document

Design Notes

  • Switching Regulator Allows Alkalines to Replace NiCads &mdash DN41
    PDF, 70 Kb, File published: Nov 1, 1990
    Extract from the document

Articles

  • Positive-to-Negative Converter Powers В–48V Telecom Circuits &mdash LT Journal
    PDF, 230 Kb, File published: May 1, 1998
    Extract from the document

Model Line

Manufacturer's Classification

  • Power Management > Switching Regulator > SEPIC Regulators
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

Other Names:

LT1170CQTRPBF, LT1170CQ TRPBF

EMS supplier