L6902D DC-DC Switching Converters by STMicroelectronics

Up to 1 A switching regulator with adjustable current limit


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.

Where to Buy

Prices starting from US$1.62

Distributor Stock
Logo for Future Electronics
Future Electronics
from US$1.62
1,251
in stock
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Logo for Transfer Multisort Elektronik
Transfer Multisort Elektronik
from US$2.37
5,131
in stock
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Logo for Newark Electronics
Newark Electronics
from US$2.30
4,907
in stock
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Logo for element14
element14
from US$1.98
4,907
in stock
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Logo for Farnell
Farnell
from US$1.87
4,907
in stock
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Logo for Distrelec
Distrelec
from US$3.29
10
in stock
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Logo for Avnet Silica
Avnet Silica
-
22,000
in stock
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Logo for EBV Elektronik
EBV Elektronik
-
1,200
in stock
Buy Now
Logo for RS
RS
from US$2.42
-
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Logo for Avnet America
Avnet America
from US$1.71
-
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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

Alternative Descriptions

IC: driver | Transfer Multisort Elektronik
Dc-Dc Switching Buck (Step Down) Regulator, Adjustable, 8V-36Vin, 1.235V-34Vout, 1Aout, Soic-8 Rohs Compliant: Yes |Stmicroelectronics L6902D | Newark Electronics
SWITCHING REGULATOR, 1A, 34V, 8SO | element14
L6902D Series 8 V to 36 V 1 A Surface Mount Switching Voltage Regulator - SOIC-8 | Future Electronics
ST Switching Regulator IC, SO-8, 1A | Distrelec
Conv DC-DC Single Step Down 8V to 36V 8-Pin SO N Tube | Avnet Silica
Sw. Regulator 1A 275KHz Step-Down | RS


Frequently Asked Questions

Where can I find additional details, specifications and documents for a L6902D?

Additional datasheets, footprints and schematics for L6902D are listed on our Part Details page. You can also find images and similar parts to L6902D on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for L6902D on our Product Comparison page. Access via the 'View Pricing & Stock' button to view L6902D price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does L6902D fall under?

The L6902D is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to L6902D when available in the Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the L6902D you can contact the distributor directly for product support, shipping queries etc.

Is the L6902D RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for L6902D have stock available?

Authorised distributors including Transfer Multisort Elektronik, Newark Electronics, element14, Farnell and Future Electronics have stock available or on a lead time for L6902D.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for L6902D often in real-time on the comparison pages.

What if I can't find stock of L6902D?

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