STMicroelectronics L99SP08 Smart Octal P-Channel Device
STMicroelectronics L99SP08 Smart Octal P-Channel Device is an octal channel device made using STMicroelectronics BCD9sL technology, housed in a small QFN 5mm x 5mm x 0.9mm 32+4L wettable flanks package. It is designed to support standby functionality when interacting with the hybrid and monolithic STi2Fuse product family, as well as to drive loads in standalone mode up to IOUTX DC current per channel. By integrating a deep standby mode, the device meets the highly stringent requirements of all those always-active battery lines, providing ultra-low current consumption in parking mode.
Real-time diagnostics are available via the SPI bus (communication errors, oscillator stuck, overtemperature, VCC, and VOUT monitoring). In case of overtemperature, VDS overvoltage, or IPEAK triggering, the device sets the EN pin high, enabling the turn-on of external devices, such as STi2Fuse hybrid and monolithic devices. Built-in self-tests (BIST) are integrated to verify the device's correct behavior during its working life, allowing customers to perform on-demand testing of the current ADC, voltage ADC, and standby on the current sense chain, and P-channel stuck-on protection.
The device is also equipped with a non-volatile memory (NVM) to allow the customer to set current threshold (ITHRx) parameters and manage the standby-on-exit strategy. Limp-home mode is enabled when the watchdog monitoring time-out event is reset or when the LH (limp-home) pin is set to high. In this state, each output is controlled by dedicated direct inputs (DIx). The STMicroelectronics L99SP08 is AEC-Q100 qualified, making it ideal for many automotive applications.
Features
- AEC-Q100 qualified
- 8x P-channel with RON = 1Ω
- Ultra-low current consumption
- 0μA in deep standby mode
- 6μA in standby-on mode per channel
- 4x direct inputs to control channels status in limp-home mode
- 24-bit ST-SPI interface for device full configurability and standalone operation
- Limp-home mode set by dedicated pin
- Integrated ADC block to monitor
- Outputs current in on state (both in normal and fail-safe mode)
- Battery and output voltages in both on and off states (in normal mode)
- Device junction temperature (TJ) in both the on and off states
- 500mA minimum peak current (per channel) to avoid undesired main switch triggering due to inrush transient current (microcontroller peripherals polling, contact monitoring)
- Dual range ADC for current sensing
- Built-in self-test (BIST), actionable on demand, to monitor correct device behavior during its working life
- Current ADC
- Voltage ADC
- Standby on the current sense chain
- P-channel stuck-on protection
- Non-volatile memory (NVM) to configure current thresholds (ITHRx) automatically to exit standby ON state - two few times programmable (FTP) bits per channel
- Capacitive charging mode (CCM) in normal operation
- Protection–whose triggering generates the main switch enable
- Overtemperature shutdown (latch-off)
- Current shutdown (based on VDS monitoring)
- Integrated ESD protection
- QFN 5mm x 5mm x 0.9mm 32+4L package with wettable flanks
- Compliant with European directive 2002/95/EC
Applications
- Automotive always‑on battery lines
- Parking‑mode power management systems
- Body Control Modules (BCM)
- Vehicle gateway and central ECUs
- Standby‑on power distribution in automotive ECUs
- Systems combined with STi2Fuse hybrid or monolithic devices
- Fail‑safe and limp‑home automotive subsystems
- Power switching and diagnostics for low‑current automotive loads
Specifications
- 40V maximum transient supply voltage (VCC)
- 28V operating voltage range (VCC)
- 48µA standby ON current (maximum) (IVCC_Q)
- 3V to 5.5V SPI I/O supply voltage (VDD)
- 5µA SPI standby ON current (maximum) (IVDD_Q)
Block Diagram
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