L6984ATR

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STMicroelectronics

CONV DC-DC 4.5V TO 36V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.9V 0.35A 10-PIN VDFPN EP T/R

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L6984ATR

Active

STMicroelectronics

CONV DC-DC 4.5V TO 36V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.9V 0.35A 10-PIN VDFPN EP T/R

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	L6984ATR

Current - Output	400 mA
Frequency - Switching [Max]	600 kHz
Frequency - Switching [Min]	250 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 (Fixed)
Package / Case	10-VFDFN Exposed Pad
Supplier Device Package	10-VDFPN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	36 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Max)	28 V
Voltage - Output (Min/Fixed)	0.9 V
Voltage - Output (Min/Fixed)	3.3 V

L6984 Series

36 V, 400 mA synchronous step-down switching regulator

Part	Output Configuration	Output Type	Supplier Device Package	Topology	Current - Output	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Synchronous Rectifier	Number of Outputs	Mounting Type	Package / Case	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed)	Frequency - Switching [Min]	Frequency - Switching [Max]	Voltage - Output (Max)	Function	Operating Temperature [Max]	Operating Temperature [Min]
STMicroelectronics L6984ATR	Positive	Adjustable (Fixed)	10-VDFPN (3x3)	Buck	400 mA	4.5 V	36 V		1	Surface Mount	10-VFDFN Exposed Pad	0.9 V	3.3 V	250 kHz	600 kHz	28 V	Step-Down	150 °C	-40 °C

Pricing

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

Distributor	Package	Quantity	$

Arrow	N/A	3000	$ 1.01
Digikey	Cut Tape (CT)	1	$ 2.61
		10	$ 2.35
		25	$ 2.21
		100	$ 1.89
		250	$ 1.77
		500	$ 1.55
		1000	$ 1.28
	Digi-Reel®	1	$ 2.61
		10	$ 2.35
		25	$ 2.21
		100	$ 1.89
		250	$ 1.77
		500	$ 1.55
		1000	$ 1.28
	Tape & Reel (TR)	3000	$ 1.20
		6000	$ 1.15
TME	N/A	1	$ 4.88
		5	$ 4.37
		25	$ 3.93
		100	$ 3.50
		500	$ 3.06

Description

General part information

L6984 Series

The L6984 is a step-down monolithic switching regulator able to deliver up to 400 mA DC. The output voltage adjustability ranges from 0.9 V. The fixed 3.3 V VOUTrequires no external resistor divider. The "Low Consumption Mode" (LCM) is designed for applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The "Low Noise Mode" (LNM) makes the switching frequency almost constant over the load current range, serving low noise application specification like car audio/sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing on low-side power element implements an effective constant current protection.