L9733

Octal configurable low/high side driver

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The L9733 is a highly flexible monolithic, medium current, output driver that incorporates 8 outputs that can be used as either internal low or high-side drives in any combination.

Outputs 1-8 are self-configuring as high or low-side drives. Self-configuration allows a user to connect a high or low-side load to any of these outputs and the L9733 will drive them correctly as well as provide proper fault mode operation with no other needed inputs. In addition, outputs 6, 7 and 8 can be PWM controlled via a external pins (IN6-8).

This device is capable of switching variable load currents over the ambient range of -40 °C to +125 °C. The outputs are MOSFET drivers to minimize Vdd current requirements. For low-side configured outputs an internal zener clamp from the drain to gate with a breakdown of 50 V minimum will provide fast turn off of inductive loads. When a high-side configured output is commanded Off after having been commanded On, the source voltage will go to (VGND - 15 V).

An 16 bit SPI input is used to command the 8 output drivers either "On" or "Off", reducing the I/O port requirement of the microcontroller. Multiple L9733 can be daisy-chained. In addition the SPI output indicates latched fault conditions that may have occurred.

Key Features

AEC-Q100 (Rev. F) qualified
Eight independently self configuring low/high drivers
Supply voltage from 4.5 V to 5.5 V
R_ON(max)= 0.7 Ω @ T_j= 25 °C,R_ON(max)= 1.2 Ω @T_j= 125 °C
Minimum current limit of each output 1 A
Output voltage clamping min. 40 V in low-side configuration
Output voltage clamping max. -14 V in high-side configuration
SPI interface for outputs control and for diagnosis data communication
Additional PWM inputs for 3 outputs
Independent thermal shutdown for all outputs open load, short to GND, short to Vb, overcurrent diagnostics in latched or unlatched mode for each channel
Internal charge pump without need of external capacitor
Controlled SR for reduced EMC

Resources

Technical Documentation

Product Specifications

	Description	Version	Size
	DS4285: Automotive octal self configuring low/high side driver	12.0	567 KB

Application Notes

	Description	Version	Size
	AN4402: Multichannel drivers driving inductive loads with L99MC6 and L9733	1.1	604 KB

Tools and Software

Support and Applications

Engineering Services

Part Number	Manufacturer	Description
Contract Design for Manufacturing	LACROIX Electronics	CDM consists in the full design, industrialization and manufacturing of an electronic product performed by LACROIX Electronics teams for manufacturers.
Design for eXcellence	LACROIX Electronics	DfX refers to all methods and tools used by LACROIX Electronics to carry out the advanced industrialization of an electronic assembly or sub-assembly.
Electronics Manufacturing Services	LACROIX Electronics	LACROIX Electronics supports manufacturers in their electronics subcontracting projects and offers a complete manufacturing and testing service.

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Sample & Buy

Part Number	Package	Packing Type	Operating Temperature (°C) (min)	Marketing Status	Unit Price (US$) *	Quantity	ECCN (US)	Country of Origin	More info	Order from Distributors
L9733CNTR	PowerSSO 28 7.5x10.3	Tape And Reel	-	Active : Product is in volume production	2.31	1000	EAR99	MALAYSIA	MORE INFO	DISTRIBUTOR AVAILABILITY
L9733XPTR	PowerSSO 28 7.5x10.3	Tape And Reel	-	Active : Product is in volume production	2.38	1000	EAR99	MALAYSIA	MORE INFO	DISTRIBUTOR AVAILABILITY
L9733CN	PowerSSO 28 7.5x10.3	Tube	-	Active : Product is in volume production	2.31	1000	EAR99	MALAYSIA	MORE INFO	No availability reported, please contact our Sales office
L9733XP	PowerSSO 28 7.5x10.3	Tube	-	Active : Product is in volume production	2.38	1000	EAR99	MALAYSIA	MORE INFO	No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors

Quality & Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade
L9733CNTR	Active	PowerSSO 28 7.5x10.3	Automotive	Ecopack2
L9733XPTR	Active	PowerSSO 28 7.5x10.3	Automotive	Ecopack2
L9733CN	Active	PowerSSO 28 7.5x10.3	Automotive	Ecopack2
L9733XP	Active	PowerSSO 28 7.5x10.3	Automotive	Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.