L6983CQ

STMicroelectronics

-40℃~+150℃@(TJ) 1 2.2MHz 3.5V~38V 3A Buck Built-in Yes TQFN-16-EP(3x3) DC-DC Converters ROHS

Extended

Category: DC DC Converters
Package: TQFN-16-EP(3x3)
Pins: 17

Overview

The L6983CQ is a DC DC Converter made by STMicroelectronics in a TQFN-16-EP(3x3) package with 17 pins. -40℃~+150℃@(TJ) 1 2.2MHz 3.5V~38V 3A Buck Built-in Yes TQFN-16-EP(3x3) DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:L6983N33QTR, from EasyEDA) and its footprint (EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-BL-EP, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C509127).

Symbol

EasyEDA_Cloud:L6983N33QTRFrom EasyEDA

Footprint

EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-BL-EPFrom EasyEDA

Parameters

Features: Overcurrent Protection, Light load efficient mode, Operating status indication, Cycle-by-cycle current limiting, Frequency synchronization, Built-in LDO regulator, EMI optimization (spread spectrum)
Frequency - Switching: 2.2MHz
Function: Step-down type
Number of Outputs: 1
Operating Temperature: -40℃~+150℃@(TJ)
Output Current: 3A
Output Type: Adjustable
Output Voltage: 850mV~38V
Quiescent Current: 17uA
Switch tube (built-in/external): Built-in
Synchronous Rectifier: Yes
Topology: Buck
Voltage - Supply: 3.5V~38V

Order codes

L6983CQTRLCSC C509127

Pinout

The pins of the L6983CQ
Pin	Name	Type
1	VIN	Unspecified
2	VINLDO	Unspecified
3	AGND	Unspecified
4	EN/CLKIN	Unspecified
5	PGOOD	Unspecified
6	VBIAS	Unspecified
7	FB/VOUT	Unspecified
8	FSW	Unspecified
9	VCC	Unspecified
10	AGND	Unspecified
11	BOOT	Unspecified
12	VIN	Unspecified
13	PGND	Unspecified
14	SW	Unspecified
15	SW	Unspecified
16	PGND	Unspecified
17	PAD	Unspecified

Show this part on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/parts/st/L6983CQ" title="L6983CQ in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/parts/st/L6983CQ.jpg" alt="L6983CQ" width="1200" height="900">

A picture that opens the part, for a README

[![L6983CQ](https://pcbkit.io/embed/parts/st/L6983CQ.jpg?size=s)](https://pcbkit.io/parts/st/L6983CQ)

Questions

Is there a KiCad symbol and footprint for the L6983CQ?

Yes. The symbol is EasyEDA_Cloud:L6983N33QTR and the footprint EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the L6983CQ?

TQFN-16-EP(3x3), with 17 pins. Its footprint is drawn on this page.

Where is the L6983CQ datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the L6983CQ?

JLCPCB lists it as part C509127, with 0 in stock; the sellers' links on this page open their listings.

What can replace the L6983CQ?

Parts like it in the library: the L6983C33Q by STMicroelectronics, the L6983C50Q by STMicroelectronics and the L6983N50Q by STMicroelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.