# Automotive Smart Fuel Pump Controller (Component) ## Description Automotive smart fuel pump controller with >12 V battery qualification, protected battery input, analog FSCM command following, 25 A current sensing, thermal/fault indication, blue/red LED signaling, and 5-second buzzer alert. Control and fault nets are explicitly terminated to avoid floating or undriven states; any intentionally provisional control nodes are weakly biased to safe defaults during refinement. ## Component Details - **Owner:** devxxx - **Created:** 4/8/2026 - **Last Updated:** 4/15/2026 - **Visibility:** Public - **Reliability Target (MTBF):** Automotive/motorsport rugged operation with continuous 15A to 25A load capability, 5g vibration tolerance, and stable recovery from brownout, noisy command input, and rapid threshold cycling. - **Implementation Details:** Primary field interface is a Deutsch DTP 4-way automotive connector. Proposed harness-facing pin functions: Pin 1 = GND, Pin 2 = BATT_IN, Pin 3 = PUMP_OUT, Pin 4 = FSCM_ANALOG_IN. DTP series uses size 12 contacts with 25 A continuous capacity per circuit and sealed automotive construction; exact TE/Deutsch housing not currently available in library, so project scope records the intended connector family and pinout while schematic implementation uses a temporary 4-position field connector placeholder pending exact part availability. Battery input path must follow connector -> fuse -> reverse polarity protection -> TVS -> bulk/filter cap -> controlled power stage. External analog signal pin requires input filtering and protection before command-processing circuitry. Persistent red fault indication and 5-second audible alert remain active per approved fault logic. - **Connector Type:** Deutsch DTP 4-way - **System Architecture:** flowchart TD A[Deutsch DTP 4 way] B[Protected Battery Input] C[Analog FSCM Input Filter] D[Battery Qualification] E[PWM Gate Driver] F[External MOSFET Power Stage] G[Pump Current Shunt and INA240] H[Temperature Sensor] I[Fault LED Driver] J[5 Second Audible Alert] K[Pump Output] A -->|BATT IN| B A -->|FSCM ANALOG IN| C B --> D B --> E B --> F C --> E D --> E F --> G G --> K H --> E E --> F E --> I E --> J A -->|PUMP OUT| K A -->|GND| G - **Operating Voltage:** >12V required at battery input - **Power Requirements:** Automotive battery input; operation only when input exceeds 12V; no 10V floor synthesis when battery input is invalid - **Forks:** 1 - **Package / Case Code:** TO --- *Generated from [https://www.flux.ai/devxxx/automotive-smart-fuel-pump-controller~9x](https://www.flux.ai/devxxx/automotive-smart-fuel-pump-controller~9x)*