L6902

Active

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

Circuit Diagram

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Part Number
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Approximate Price (US$)* / Qty
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L6902D SO-8 Tube
Active
EAR99 CHINA 2.63 / 1k Buy now Check Availability

Distributor availability ofL6902D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3490 1 Order Now
RS COMPONENTS EUROPE 2019 1 Order Now
FUTURE WORLDWIDE 2097 1 Order Now
ARROW EUROPE 268 0 Order Now
MOUSER WORLDWIDE 1119 1 Order Now
Farnell Element14 EUROPE 775 1 Order Now
ANGLIA Live EUROPE 260 1 Order Now
RUTRONIK EUROPE 4000 100 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

Stock

3490

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2019

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

2097

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

268

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1119

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

775

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

260

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

4000

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

L6902D013TR SO-8 Tape And Reel
Active
EAR99 CHINA 2.63 / 1k Buy now Check Availability

Distributor availability ofL6902D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4436 1 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 1053 0 Order Now
ARROW AMERICA 10006 1 Order Now
MOUSER WORLDWIDE 7512 1 Order Now
Farnell Element14 EUROPE 2865 1 Order Now
RUTRONIK EUROPE 55000 2500 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

Stock

4436

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1053

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

10006

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

7512

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2865

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

55000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

L6902D

Package

SO-8

Packing Type

Tube

Approximate Price (US$)* / Qty

2.63 / 1k

Distributor availability ofL6902D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3490 1 Order Now
RS COMPONENTS EUROPE 2019 1 Order Now
FUTURE WORLDWIDE 2097 1 Order Now
ARROW EUROPE 268 0 Order Now
MOUSER WORLDWIDE 1119 1 Order Now
Farnell Element14 EUROPE 775 1 Order Now
ANGLIA Live EUROPE 260 1 Order Now
RUTRONIK EUROPE 4000 100 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

Stock

3490

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2019

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

2097

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

268

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1119

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

775

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

260

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

4000

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

2.63 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

L6902D013TR

Package

SO-8

Packing Type

Tape And Reel

Approximate Price (US$)* / Qty

2.63 / 1k

Distributor availability ofL6902D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4436 1 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 1053 0 Order Now
ARROW AMERICA 10006 1 Order Now
MOUSER WORLDWIDE 7512 1 Order Now
Farnell Element14 EUROPE 2865 1 Order Now
RUTRONIK EUROPE 55000 2500 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

Stock

4436

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1053

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

10006

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

7512

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2865

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

55000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

2.63 / 1k

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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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6902D
Active
SO-8 Industrial Ecopack2 (**)
L6902D013TR
Active
SO-8 Industrial 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.

eDesignSuite

Converter

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 Driver

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 custom

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.
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