The HI-84216 is a smart 16-channel low-side driver designed for high reliability applications. The device uses a Serial Peripheral Interface (SPI) for intelligent switch control, monitoring and advanced diagnostics. It is capable of sinking 250mA per channel with up to 4A total sink current for parallel channel operation. An 8-bit ADC provides accurate measurement of channel current and temperature while an internal PWM clock generator with 16-bit resolution provides application flexibility.
Features
- Compact 16 channel low-side driver (6mm x 6mm)
- 250mA sink current per channel
- Sink up to 4A when all channels used in parallel
- Accurate current/temperature measurement
- Access diagnostics and program via 10 MHz SPI
- 0.5 Ω On-Resistance per channel
- < 1μA leakage current with low quiescent power
- Digital I/O powered with 1.8V to 5.0V
- Continuous Online Built-in Self-Test
- Host-controlled output enable pin
- Operating Temperature:
- -40oC to +85oC or -55oC to +125oC
- Over-current shutdown protection with programmable retries
- Thermal fail-safe
- Internal or external PWM option for soft-start or LED dimming
- Internal programmable PWM clock generator with 16-bit resolution on pulse width and period
- PWM configured on a per-channel basis over SPI
- PWM clock fault detection
- Optional programmable watchdog timer
- Programmable High/Low Current Thresholds
- Open/Short Load Detection
- Interrupt output pin set with enabled interrupts
Applications
- Aerospace/Defense
- Avionics Discrete Output Signaling
- High Reliability
- LED Driver/Dimming
- Incandescent Lamp Control
- Relay and Solenoid
- Small DC Motor
- Valve/Actuator Control
- Automation
- General low-side-switch control
