A6983CQTR

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STMicroelectronics

AUTOMOTIVE-GRADE 38 V, 3 A SYNCHRONOUS STEP-DOWN CONVERTER WITH 25 ΜA QUIESCENT CURRENT

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A6983CQTR

Active

STMicroelectronics

AUTOMOTIVE-GRADE 38 V, 3 A SYNCHRONOUS STEP-DOWN CONVERTER WITH 25 ΜA QUIESCENT CURRENT

Deep-Dive with AI

Documents +6

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	A6983CQTR

Current - Output	3 A
Frequency - Switching [Max]	2.3 MHz
Frequency - Switching [Min]	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	16-WFQFN Exposed Pad
Supplier Device Package	16-QFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	38 V
Voltage - Input (Min) [Min]	3.5 V
Voltage - Output (Max)	38 V
Voltage - Output (Min/Fixed)	0.85 V

STEVAL-A6983CV1 Series

Automotive-grade 38 V, 3 A synchronous step-down converter with 25 µA quiescent current

Part	Voltage - Input (Max) [Max]	Topology	Output Type	Voltage - Output (Min/Fixed)	Output Configuration	Function	Mounting Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Current - Output	Voltage - Output (Max)	Voltage - Input (Min) [Min]	Package / Case	Number of Outputs	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Main Purpose	Board Type	Voltage - Input [Max]	Voltage - Input [Min]	Utilized IC / Part	Regulator Topology	Supplied Contents	Outputs and Type	Outputs and Type
STMicroelectronics A6983CQTR	38 V	Buck	Adjustable	0.85 V	Positive	Step-Down	Surface Mount	200 kHz	2.3 MHz	3 A	38 V	3.5 V	16-WFQFN Exposed Pad	1	16-QFN (3x3)	150 °C	-40 °C
STMicroelectronics A6983IQTR	38 V	Buck	Adjustable	0.85 V	Isolation Capable Positive	Step-Down	Surface Mount	200 kHz	1 MHz	4.5 A	38 V	3.5 V	16-WFQFN Exposed Pad	1	16-QFN (3x3)	150 °C	-40 °C
STMicroelectronics STEVAL-A6983CV1										3 A								DC/DC Step Down	Fully Populated	38 V	3.5 V	A6983C	Buck	Board(s)	Non-Isolated	1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.93
		10	$ 3.53
		25	$ 3.33
		100	$ 2.89
		250	$ 2.74
		500	$ 2.46
		1000	$ 2.07
	Digi-Reel®	1	$ 3.93
		10	$ 3.53
		25	$ 3.33
		100	$ 2.89
		250	$ 2.74
		500	$ 2.46
		1000	$ 2.07
	Tape & Reel (TR)	3000	$ 1.97
Newark	Each (Supplied on Cut Tape)	1	$ 3.54
		10	$ 2.67
		25	$ 2.45
		50	$ 2.33
		100	$ 2.21
		250	$ 2.09
		500	$ 2.02
		1000	$ 1.96

Description

General part information

STEVAL-A6983CV1 Series

The A6983I is a device specifically designed for isolated buck topology. The primary output voltage can be accurately adjusted, whereas the isolated secondary output is derived by using a given transformer ratio. No optocoupler is required. The primary sink capability up to -4.5 A (even during soft-start) allows a proper energy transfer to the secondary side, as well as enables a tracked soft-start of the secondary output. The control loop is based on a peak current mode architecture and the device operates in forced PWM. The 390 ns blanking time filters oscillations, generated by the transformer leakage inductance, makes the solution more robust.

Both the compact QFN-16 (3x3 mm) package and the internal compensation of the A6983I help minimizing the design complexity and size.

The switching frequency can be programmed in the 200 kHz to 1 MHz range with an optional spread spectrum for improved EMC.