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.

    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

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L6902D SO-8 Tube
Active
1.145 10000 EAR99 CHINA 查看供货情况

Distributor availability ofL6902D

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

Distributor availability ofL6902D013TR

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DIGIKEY WORLDWIDE 478 1 Order Now
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MOUSER WORLDWIDE 8342 1 Order Now
Farnell Element14 EUROPE 4483 1 Order Now
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10000

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0

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5000

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ARROW

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2506

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1

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8342

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代理商库存报告日期: 2019-08-23

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L6902D

封装

SO-8

包装类型

Tube

Unit Price (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 3970 1 Order Now
RS COMPONENTS EUROPE 70 1 Order Now
FUTURE WORLDWIDE 999 1 Order Now
MOUSER WORLDWIDE 2665 1 Order Now
Farnell Element14 EUROPE 1288 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: 2019-08-23

代理商名称

DIGIKEY

库存

3970

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

70

Min.Order

1

地区

EUROPE Order Now

FUTURE

库存

999

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

2665

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1288

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: 2019-08-23

供货状态

Active

Unit Price (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

Unit Price (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 478 1 Order Now
AVNET AMERICA 10000 0 Order Now
ARROW EUROPE 5000 0 Order Now
ARROW AMERICA 2506 1 Order Now
MOUSER WORLDWIDE 8342 1 Order Now
Farnell Element14 EUROPE 4483 1 Order Now
RUTRONIK EUROPE 20000 2500 Order Now

代理商库存报告日期: 2019-08-23

代理商名称

DIGIKEY

库存

478

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

10000

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

5000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

2506

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

8342

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

4483

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

20000

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-23

供货状态

Active

Unit Price (US$)

1.145

数量

10000

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

L6902D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L6902D013TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

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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