A6985FTR

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STMicroelectronics

AUTOMOTIVE 38 V, 500 MA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 30 ΜA QUIESCENT CURRENT

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A6985FTR

Active

STMicroelectronics

AUTOMOTIVE 38 V, 500 MA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 30 ΜA QUIESCENT CURRENT

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Description Specifications Series Pricing CAD Documents

Description

General part information

A6985F Series

The A6985F automotive grade device is a step-down monolithic switching regulator able to deliver up to 0.5 A DC. The output voltage adjustability ranges from 0.85 V to VIN. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. 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 constant and minimizes the output voltage ripple overload current range, meeting the low noise application specification like car audio. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA). The RST open collector output can also 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 both power elements implements an effective constant current protection.

Technical Specifications

Parameters and characteristics for this part

Specification	A6985FTR

Current - Output	500 mA
Frequency - Switching (Max)	2 MHz
Frequency - Switching (Min)	250 kHz
Function	Step-Down
Grade	Automotive
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 Length	0.173 in
Package Name	16-HTSSOP, 16-PowerTSSOP
Package Width	4.4 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	38 V
Voltage - Input (Min)	4 V
Voltage - Output (Max)	38 V
Voltage - Output (Min/Fixed)	0.85 V

A6985F Series

Automotive 38 V, 500 mA synchronous step-down switching regulator with 30 µA quiescent current

Part	Number of Outputs	Mounting Type	Package Name	Frequency - Switching (Max)	Frequency - Switching (Min)	Voltage - Input (Min)	Package Length	Package Width	Synchronous Rectifier	Output Type	Current - Output	Topology	Voltage - Output (Min/Fixed)	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Input (Max)	Qualification	Output Configuration	Function	Grade	Voltage - Output (Max)
STMicroelectronics A6985F5V	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Fixed	500 mA	Buck	5 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive
STMicroelectronics A6985F	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Adjustable	500 mA	Buck	0.85 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive	38 V
STMicroelectronics A6985F3V3	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Fixed	500 mA	Buck	3.3 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive
STMicroelectronics A6985F5VTR	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Fixed	500 mA	Buck	5 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive
STMicroelectronics A6985FTR	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Adjustable	500 mA	Buck	0.85 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive	38 V
STMicroelectronics A6985F3V3TR	1	Surface Mount	16-HTSSOP 16-PowerTSSOP	2 MHz	250 kHz	4 V	0.173 in	4.4 mm	Yes	Fixed	500 mA	Buck	3.3 V	-40 °C	150 °C	38 V	AEC-Q100	Positive	Step-Down	Automotive