L6902

批量生产

具有可调电流限值的1 A开关稳压器

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概述
样片和购买
解决方案
资源
工具与软件
质量与可靠性
eDesignSuite
开始
Partner products
Sales Briefcase
  • The L6902D is a complete and simple step down switching regulator with adjustable current limit.

    Based on a voltage mode structure it integrates a current error amplifier to have a constant voltage and constant current control.
    By means of an on board current sense resistor and the availability of the current sense pins (both compatible to Vcc and for Cs- compatible with GND too) a current limit programming is very simple and accurate (±5%). Moreover constant current control can be used to charge NiMH and NiCd batteries.
    The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor).
    The internal robust P-channel DMOS transistor with a typical of 250 mΩ assures high efficiency and a minimum dropout even at high output current level. The internal limiting current (latched function) of typical value of 2.5 A protects the device from accidental output short circuit avoiding dangerous loads damage.
    If the temperature of the chip goes higher than a fixed internal threshold (150°C with 20°C hysteresis), the power stage is turned off.
    Other protections beside thermal shutdown complete the device for a safe and reliable application: overvoltage protection, frequency folback overcurrent protection and protection vs. feedback disconnection.
    The internal fixed switching frequency of 250KHz, and the SO-8 package pin allow to built an ultra compact DC/ DC converter with a minimum board space.

    主要特性

    • Up to 1 A output current
    • Operating input voltage from 8 V to 36 V
    • Precise 3.3 V (±2%) reference voltage
    • 5 % output current accuracy
    • Output voltage adjustable from 1.235 V to 34 V
    • 250 kHz internally fixed frequency
    • Voltage feedforward
    • Zero load current operation
    • Adjustable current limit
    • Protection against feedback Disconnection
    • Thermal shutdown

电路原理图

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评估工具

    • 产品型号

      基于L6902D的1 A恒定电流DC/DC转换器评估板

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技术文档

    • 描述 版本 文档大小 操作
      DS2033
      Up to 1 A switching regulator with adjustable current limit
      9.0
      197.56 KB
      PDF
      DS2033

      Up to 1 A switching regulator with adjustable current limit

    • 描述 版本 文档大小 操作
      AN2129
      Dimming of super high brightness LEDs with L6902D
      2.3
      357.13 KB
      PDF
      AN1941
      Low Voltage LED Driver Using L6920D, L4971 and L6902D
      1.5
      499.38 KB
      PDF
      AN2129

      Dimming of super high brightness LEDs with L6902D

      AN1941

      Low Voltage LED Driver Using L6920D, L4971 and L6902D

    • 描述 版本 文档大小 操作
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
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      Electric vehicle (EV) ecosystem

质量与可靠性

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
L6902D
批量生产
SO-8 Industrial Ecopack2 (**)
L6902D013TR
批量生产
SO-8 Industrial Ecopack2 (**)

L6902D

Package:

SO-8

Material Declaration**:

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L6902D013TR

Package:

SO-8

Material Declaration**:

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

(**) 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

eDesignSuite

转换器

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

LED驱动器

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

LED自定义

V This option is required.
A This option is required.
Ω This option is required.

LEDs

This option is required. And must be a whole positive number between 1 and 20.
This option is required. And must be a whole positive number between 1 and 20.

样片和购买

产品型号
从分销商订购
从ST订购
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L6902D Available at 8 distributors

...的经销商可用性L6902D

代理商名称
地区 Stock 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2632 1 马上订购
RS COMPONENTS EUROPE 2008 1 马上订购
FUTURE WORLDWIDE 2097 1 马上订购
ARROW EUROPE 2000 0 马上订购
MOUSER WORLDWIDE 2922 1 马上订购
Farnell Element14 EUROPE 758 1 马上订购
ANGLIA Live EUROPE 160 1 马上订购
RUTRONIK EUROPE 3500 100 马上订购

代理商库存报告日期: 2020-07-02

代理商名称

DIGIKEY

Stock

2632

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

Stock

2008

Min.Order

1

地区

EUROPE 马上订购

FUTURE

Stock

2097

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

Stock

2000

Min.Order

0

地区

EUROPE 马上订购

MOUSER

Stock

2922

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

Stock

758

Min.Order

1

地区

EUROPE 马上订购

ANGLIA Live

Stock

160

Min.Order

1

地区

EUROPE 马上订购

RUTRONIK

Stock

3500

Min.Order

100

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-02

立即购买 SO-8 Tube
批量生产
EAR99 CHINA 1.145 / 1k
L6902D013TR Available at 6 distributors

...的经销商可用性L6902D013TR

代理商名称
地区 Stock 最小订购量 第三方链接
DIGIKEY WORLDWIDE 8883 1 马上订购
ARROW EUROPE 27500 0 马上订购
Newark Element14 AMERICA 1053 0 马上订购
ARROW AMERICA 7506 1 马上订购
MOUSER WORLDWIDE 6371 1 马上订购
Farnell Element14 EUROPE 2854 1 马上订购

代理商库存报告日期: 2020-07-02

代理商名称

DIGIKEY

Stock

8883

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

Stock

27500

Min.Order

0

地区

EUROPE 马上订购

Newark Element14

Stock

1053

Min.Order

0

地区

AMERICA 马上订购

ARROW

Stock

7506

Min.Order

1

地区

AMERICA 马上订购

MOUSER

Stock

6371

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

Stock

2854

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-02

立即购买 SO-8 Tape And Reel
批量生产
EAR99 CHINA 1.145 / 1k

L6902D

封装

SO-8

包装类型

Tube

Budgetary Price (US$)*/Qty

1.145 / 1k

...的经销商可用性L6902D

代理商名称
地区 Stock 最小订购量 第三方链接
DIGIKEY WORLDWIDE 2632 1 马上订购
RS COMPONENTS EUROPE 2008 1 马上订购
FUTURE WORLDWIDE 2097 1 马上订购
ARROW EUROPE 2000 0 马上订购
MOUSER WORLDWIDE 2922 1 马上订购
Farnell Element14 EUROPE 758 1 马上订购
ANGLIA Live EUROPE 160 1 马上订购
RUTRONIK EUROPE 3500 100 马上订购

代理商库存报告日期: 2020-07-02

代理商名称

DIGIKEY

Stock

2632

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

Stock

2008

Min.Order

1

地区

EUROPE 马上订购

FUTURE

Stock

2097

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

Stock

2000

Min.Order

0

地区

EUROPE 马上订购

MOUSER

Stock

2922

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

Stock

758

Min.Order

1

地区

EUROPE 马上订购

ANGLIA Live

Stock

160

Min.Order

1

地区

EUROPE 马上订购

RUTRONIK

Stock

3500

Min.Order

100

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-02

供货状态

批量生产

Budgetary Price (US$)* / Qty

1.145 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

L6902D013TR

封装

SO-8

包装类型

Tape And Reel

Budgetary Price (US$)*/Qty

1.145 / 1k

...的经销商可用性L6902D013TR

代理商名称
地区 Stock 最小订购量 第三方链接
DIGIKEY WORLDWIDE 8883 1 马上订购
ARROW EUROPE 27500 0 马上订购
Newark Element14 AMERICA 1053 0 马上订购
ARROW AMERICA 7506 1 马上订购
MOUSER WORLDWIDE 6371 1 马上订购
Farnell Element14 EUROPE 2854 1 马上订购

代理商库存报告日期: 2020-07-02

代理商名称

DIGIKEY

Stock

8883

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

Stock

27500

Min.Order

0

地区

EUROPE 马上订购

Newark Element14

Stock

1053

Min.Order

0

地区

AMERICA 马上订购

ARROW

Stock

7506

Min.Order

1

地区

AMERICA 马上订购

MOUSER

Stock

6371

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

Stock

2854

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-07-02

供货状态

批量生产

Budgetary Price (US$)* / Qty

1.145 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商