1 A switching regulator with adjustable current limit

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  • 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.

    Key Features

    • 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

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L6902D SO-8 Tube
批量生产
1.145 10000 EAR99 CHINA 查看供货情况

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L6902D013TR SO-8 Tape And Reel
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1.145 10000 EAR99 CHINA 查看供货情况

Distributor availability ofL6902D013TR

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DIGIKEY WORLDWIDE 500 1 Order Now
AVNET AMERICA 12500 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 7506 1 Order Now
MOUSER WORLDWIDE 8332 1 Order Now
Farnell Element14 EUROPE 3067 1 Order Now
RUTRONIK EUROPE 55000 2500 Order Now

代理商库存报告日期: 2019-11-19

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库存

500

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8332

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3067

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代理商库存报告日期: 2019-11-19

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L6902D

封装

SO-8

包装类型

Tube

单价(US$)

1.145*

Distributor availability ofL6902D

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3967 1 Order Now
RS COMPONENTS EUROPE 2050 1 Order Now
FUTURE WORLDWIDE 597 1 Order Now
ARROW EUROPE 2000 0 Order Now
MOUSER WORLDWIDE 2297 1 Order Now
Farnell Element14 EUROPE 1159 1 Order Now
ANGLIA Live EUROPE 380 1 Order Now
RUTRONIK EUROPE 5000 100 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

3967

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

2050

Min.Order

1

地区

EUROPE Order Now

FUTURE

库存

597

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

2000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

2297

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1159

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

380

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

5000

Min.Order

100

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

供货状态

批量生产

单价(US$)

1.145

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

L6902D013TR

封装

SO-8

包装类型

Tape And Reel

单价(US$)

1.145*

Distributor availability ofL6902D013TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 500 1 Order Now
AVNET AMERICA 12500 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 7506 1 Order Now
MOUSER WORLDWIDE 8332 1 Order Now
Farnell Element14 EUROPE 3067 1 Order Now
RUTRONIK EUROPE 55000 2500 Order Now

代理商库存报告日期: 2019-11-19

代理商名称

DIGIKEY

库存

500

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

12500

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

2500

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

7506

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

8332

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

3067

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

55000

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-19

供货状态

批量生产

单价(US$)

1.145

数量

10000

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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L6902D
批量生产
SO-8 工业 Ecopack2 (**)
L6902D013TR
批量生产
SO-8 工业 Ecopack2 (**)

L6902D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L6902D013TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

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.

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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]

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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

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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.