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  • L6668 is a current-mode primary controller IC, designed to build single-ended converters.

    The IC drives the system at fixed frequency at heavy load and an improved Standby function causes a smooth frequency reduction as the load is progressively reduced. At very light load the device enters a special operating mode (burst-mode with fixed, externally programmed peak current) that, in addition to the on-board high-voltage start-up and the very low quiescent current, helps keep low the consumption from the mains and be compliant with energy saving regulations. To allow meeting compliance with these standards in power-factor-corrected systems too, an interface with the PFC controller is provided that enables to turn off the pre-regulator when the load level falls below a threshold.
    The IC includes also a programmable soft-start, slope compensation for stable operation at duty cycles greater then 50%, a disable function, a leading edge blanking on current sense to improve noise immunity, latched disable for OVP or OTP shutdown and an effective two-level OCP able to protect the system even in case the secondary diode fails short.

    主要特性

    • LATCHED DISABLE FOR OVP/OTP FUNCTION
    • DISABLE FUNCTION (ON/OFF CONTROL)
    • 2% PRECISION REFERENCE VOLTAGE EXTERNALLY AVAILABLE
    • PROGRAMMABLE SOFT-START
    • BLUE ANGEL, ENERGY STAR, EU CODE OF CONDUCT COMPLIANT
    • ±800 mA TOTEM POLE GATE DRIVER WITH INTERNAL CLAMP AND UVLO PULL-DOWN
    • SO16 PACKAGE ECOPACK®
    • PULSE-BY-PULSE & HICCUP-MODE OCP
    • SLOPE COMPENSATION
    • MULTIPOWER BCD TECHNOLOGY
    • ON-BOARD HIGH-VOLTAGE START-UP
    • LOAD-DEPENDENT CURRENT-MODE CONTROL: FIXED-FREQUENCY (HEAVY LOAD), FREQUENCY FOLDBACK (LIGHT LOAD), BURST-MODE (NO-LOAD)
    • LOW QUIESCENT CURRENT (< 2 mA)
    • INTERFACE WITH PFC CONTROLLER
    • IMPROVED STANDBY FUNCTION

样片和购买

产品型号
封装
包装类型
供货状态
预算价格(US$)
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
L6668 SO-16 Tube
Active
0.8544 1000 EAR99 CHINA 查看供货情况

Distributor availability ofL6668

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 1242 1 Order Now

代理商库存报告日期: 2019-09-20

代理商名称

MOUSER

库存

1242

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-20

立即购买
L6668TR SO-16 Tape And Reel
Active
0.8544 1000 EAR99 CHINA No availability of distributors reported, please contact our sales office 立即购买

L6668

封装

SO-16

包装类型

Tube

Unit Price (US$)

0.8544*

Distributor availability ofL6668

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 1242 1 Order Now

代理商库存报告日期: 2019-09-20

代理商名称

MOUSER

库存

1242

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-20

供货状态

Active

Unit Price (US$)

0.8544

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L6668TR

封装

SO-16

包装类型

Tape And Reel

Unit Price (US$)

0.8544*

供货状态

Active

Unit Price (US$)

0.8544

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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      AN2432
      EVALSTSR30-60W: 60W AC-DC adapter with synchronous rectification using L6668 and STSR30
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      AN2242
      Reference design: high performance, L6668-based flyback converter for set-top boxes and PVRs
      1.4
      565.3 KB
      PDF
      AN2600
      SMPS for high-end PVR based on L6668
      1.2
      568.5 KB
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      AN2432

      EVALSTSR30-60W: 60W AC-DC adapter with synchronous rectification using L6668 and STSR30

      AN2242

      Reference design: high performance, L6668-based flyback converter for set-top boxes and PVRs

      AN2600

      SMPS for high-end PVR based on L6668

    • 描述 版本 文档大小 操作
      DT0118
      A Procedure for Restoring Bootloader Functionality to the STNRG388A
      1.0
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      A Procedure for Restoring Bootloader Functionality to the STNRG388A

演示和培训资料

    • 描述 版本 文档大小 操作
      Primary side regulation controllers portfolio
      1.1 MB
      PDF

      Primary side regulation controllers portfolio

出版刊物和宣传资料

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      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
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      5.5 MB
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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
L6668
Active
SO-16 工业 Ecopack2
L6668TR
Active
SO-16 工业 Ecopack2

L6668

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6668TR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.