Product overview
描述
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.
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All features
- 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
精选 视频
All resources
| Resource title | Latest update |
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产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 19 Sep 2016 |
19 Sep 2016
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应用手册 (3)
| Resource title | Latest update | |||
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| 13 Sep 2018 |
13 Sep 2018
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| 13 Sep 2018 |
13 Sep 2018
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| 13 Sep 2018 |
13 Sep 2018
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Design Notes & Tips (1)
| Resource title | Latest update | |||
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| 25 Jul 2018 |
25 Jul 2018
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简报 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 21 Jun 2018 |
21 Jun 2018
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手册 (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 23 Mar 2020 |
23 Mar 2020
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| 29 Jul 2020 |
29 Jul 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L6668
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L6668 |
批量生产
|
SO-16 | 工业 | Ecopack2 |
|
| L6668TR |
批量生产
|
SO-16 | 工业 | Ecopack2 |
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L6668
Package:
SO-16Material Declaration**:
L6668TR
Package:
SO-16Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L6668 | 1 distributors |
批量生产
|
EAR99 | NEC | Tube | SO-16 | - | - | PHILIPPINES | 0.8544 / 1k | ||
| L6668TR | 1 distributors | Free Sample Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | SO-16 | - | - | PHILIPPINES | 0.8544 / 1k | |
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
0.8544 / 1k