Design Files
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16-Output Switch with SPI and PWM Control
The NXP® MC33999 is a 16-output low-side switch with a 24-bit serial input control, designed for a variety of applications including inductive, incandescent, and LED loads.
- The SPI provides both input control and diagnostic readout
- Eight parallel inputs are also provided for direct PWM control of 8 dedicated outputs
- An output programmable PWM input provides PWM of any combination of outputs
- A dedicated reset input provides the ability to clear all internal registers and turn all outputs off
- Interfaces with MCUs and compatible with both 3.3 V and 5 V CMOS logic levels
- Serves as a bus expander and buffer with fault management features, reducing the MCU fault management burden
Product Details
Block Diagram
Features
System Features
- RDS(ON) @ 25 °C 0.55 Ohm
- Operating Voltage, VPWR 5 V – 27 V
- Operating Voltage, SOPWR 3.1 V – 5.5 V
- Outputs current limited (0.9 A) and voltage clamped (50 V) for switching incandescent and inductive loads
- Output independent over temperature shutdown
- Programmed PWM of any combination of outputs plus parallel input control of eight outputs
- Output ON short-to-VBAT and OFF short-to-ground/open detection
- OFF open load detection current can be disabled for sensitive LED applications
- SPI diagnostic reporting
- Load current(IL) 0.35 A (Typ)
- 16 Channels
- Drain-to-Source on resistance 550000 mOhm RDS(ON) (Typ)
- Load supply voltage 0 V (Min), 40 V (Max)
Buy/Parametrics
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Documentation
Quick reference to our documentation types.
4 documents
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Data Sheet
MC33999, 16-Output Switch with SPI and PWM Control - Data SheetFeatured
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Application Note
AN2409, Small Outline Integrated Circuit (SOIC) Package - Application NoteFeatured
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Application Note
AN3670, Implementing a DSI Network Using the MC33781 and the MC33784
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Selector Guide
Motor Driver – Selector Guide
Design Resources
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
Hardware Design Services
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Independent Design House (IDH)
Embedded Software Design
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