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    參數(shù)資料
    型號(hào): LTC1753CG
    廠商: LINEAR TECHNOLOGY CORP
    元件分類: 穩(wěn)壓器
    英文描述: Isolated Flyback Switching Regulator with 9V Output
    中文描述: SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO20
    封裝: 0.209 INCH, PLASTIC, SSOP-20
    文件頁(yè)數(shù): 1/24頁(yè)
    文件大?。?/td> 269K
    代理商: LTC1753CG
    1
    LTC1753
    5-Bit Programmable
    Synchronous Switching
    Regulator Controller for
    Pentium
    III Processor
    DESCRIPTIOU
    The LTC
    1753 is a high power, high efficiency switching
    regulator controller optimized for 5V input to a digitally
    programmable 1.3V-3.5V output. The internal 5-bit DAC
    programs the output voltage from 1.3V to 2.05V in 50mV
    increments and from 2.1V to 3.5V in 100mV increments. The
    precision internal reference and an internal feedback system
    provide an output accuracy of
    ±
    1.5% at room temperature
    and typically
    ±
    2% over temperature, load current and line
    voltage shifts. The LTC1753 uses a synchronous switching
    architecture with two external N-channel output devices,
    providing high efficiency and eliminating the need for a high
    power, high cost P-channel device. Additionally, it senses the
    output current across the on-resistance of the upper N-
    channel FET, providing an adjustable current limit without an
    external low value sense resistor.
    The LTC1753 free-runs at 300kHz and can be synchronized
    to a faster external clock if desired. It provides a phase lead
    compensation scheme and under harsh loading conditions,
    the PWM duty cycle can be momentarily forced to 0% or
    100% to reduce the output voltage recovery time.
    Figure 1. 5V to 1.3V-3.5V Supply Application
    , LTC and LT are registered trademarks of Linear Technology Corporation.
    Pentium is a registered trademark of Intel Corporation.
    AMD-K6 is a registered trademark of Advanced Micro Devices, Inc.
    I
    5-Bit Digitally Programmable 1.3V to 3.5V Fixed
    Output Voltage, VRM 8.4 Compliant
    I
    Fast Transient Response: 0% to 100% Duty Cycle
    I
    Phase Lead Compensation for Remote Sensing
    I
    Overtemperature Protection
    I
    Flags for Power Good and Overvoltage Fault
    I
    19A Output Current Capability from a 5V Supply
    I
    Dual N-Channel MOSFET Synchronous Driver
    I
    Initial Output Accuracy:
    ±
    1.5%
    I
    Excellent Output Accuracy:
    ±
    2% Typ Over Line,
    Load and Temperature Variations
    I
    High Efficiency: Over 95% Possible
    I
    Adjustable Current Limit Without External Sense
    Resistors
    I
    Available in 2O-Lead SSOP and SW Packages
    I
    Power Supply for Pentium
    III, AMD-K6
    -2, SPARC,
    ALPHA and PA-RISC Microprocessors
    I
    High Power 5V to 1.3V-3.5V Regulators
    PWRGD
    FAULT
    VID0 TO VID4
    OUTEN
    COMP
    SS
    SGND
    GND
    SENSE
    10
    μ
    F
    Q1*
    20
    Q2*
    Q2A*
    Q1A*
    0.1
    μ
    F
    V
    CC
    I
    MAX
    PV
    CC
    PV
    CC
    12V
    V
    IN
    5V
    L
    O
    1.3
    μ
    H
    18A
    LTC1753
    G1
    I
    FB
    V
    FB
    +
    1
    μ
    F
    NC
    1753 F01
    C
    4700pF
    R
    C
    15k
    600
    5.6k
    5.6k
    C
    SS
    0.1
    μ
    F
    +
    0.1
    μ
    F
    10
    μ
    F
    C
    **
    1200
    μ
    F
    ×
    4
    V
    1.3V TO
    3.5V
    14A
    C
    OUT
    2700
    μ
    F
    ×
    5
    +
    C1
    150pF
    +
    5
    * SILICONIX SUD50N03-10
    ** SANYO 10MV1200GX
    PANASONIC ETQP 6FIR3LFA
    SANYO 6MV2700GX
    CPU
    G2
    FEATURES
    APPLICATIU
    TYPICAL APPLICATIO
    U
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    LTC1753CG#PBF 功能描述:IC SW REG CNTRLR PENT III 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:控制器,DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR)
    LTC1753CG#TR 功能描述:IC REG SW 5BIT PROG SYNC 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器,Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN(7x7) 包裝:管件
    LTC1753CG#TRPBF 功能描述:IC SW REG CNTRLR PENT III 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器,Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN(7x7) 包裝:管件
    LTC1753CSW 功能描述:IC SW REG CNTRLR PENT III 20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器,Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN(7x7) 包裝:管件
    LTC1753CSW#PBF 功能描述:IC SW REG CNTRLR PENT III 20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器,Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN(7x7) 包裝:管件