HIP0050IB - 0.3A/50V Octal Low-Side Driver | Renesas | Serial Ctrl
MPN: HIP0050IB ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.84 | $1,840.00 |
HIP0050IB Overview
What is an octal low-side driver? An octal low-side driver is a power-management IC that switches the ground side of up to eight loads (lamps, relays, solenoids, displays) using logic-level inputs, while the load supply can be a separate higher-voltage rail. Low-side drivers are widely used in industrial and automotive systems because they simplify wiring - all loads share a common positive supply and only the return path is switched. The 'octal' designation means eight independent channels in one package, reducing board area versus discrete transistors.
Key features of the HIP0050IB include 50 V minimum drain-to-source breakdown, 300 mA continuous output current per channel, low quiescent current, a serial interface that supports cascaded operation, and a latched over-current fault flag with automatic retry. Fabricated on Intersil/Renesas' Power BiMOS process, it combines bipolar drive circuitry with DMOS output transistors, giving high breakdown voltage and low on-resistance in a single monolithic IC. The IB suffix indicates the 24-pin plastic SOIC (wide-body) package.
Typical applications include automotive lamp and relay driving, process-control output modules, multiplexed LED or vacuum-fluorescent display drivers, and industrial solenoid/valve banks. The serial interface is well suited to microcontroller-based systems where parallel GPIO is scarce - a single SPI-like bus controls eight loads. Compared with discrete MOSFET arrays, the HIP0050IB integrates protection, level shifting, and diagnostic feedback that would otherwise require extra components.
Drop-in alternatives for HIP0050IB — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
HIP0050IB-HC
✅ Drop-In📋 Reference alternative (not in catalog)
HIP0050IBZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HIP0050IB Maximum Ratings & Electrical Characteristics
| Product Type | Octal Low-Side Power Driver |
| Number of Outputs | 8 |
| Output Configuration | Low-side, open-drain N-channel |
| Continuous Output Current (per channel) | 0.3 A |
| Drain-Source Breakdown Voltage | 50 V minimum |
| Input Interface | Synchronous serial bus (cascadable) |
| Over-Current Fault Flag | Yes (latched, with auto-retry) |
| Process Technology | Power BiMOS |
| Package | 24-pin SOIC wide-body (IB) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +125 C (automotive grade) |
| Target Applications | Lamps, relays, solenoids, displays |
| Cascadable | Yes (serial data shifted out for additional devices) |
HIP0050IB Pin Configuration
| Pin 1 | OUT0 — Open-drain output 0 |
| Pin 2 | OUT1 — Open-drain output 1 |
| Pin 3 | OUT2 — Open-drain output 2 |
| Pin 4 | OUT3 — Open-drain output 3 |
| Pin 5 | OUT4 — Open-drain output 4 |
| Pin 6 | OUT5 — Open-drain output 5 |
| Pin 7 | OUT6 — Open-drain output 6 |
| Pin 8 | OUT7 — Open-drain output 7 |
| Pin 9 | GND — Logic and power ground |
| Pin 10 | VCC — Logic supply (5 V) |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | VP — Load supply (positive rail for drains) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | FAULT — Over-current fault flag (active low, latched) |
| Pin 15 | SCLK — Serial clock input |
| Pin 16 | SDI — Serial data input |
| Pin 17 | SDO — Serial data output (cascade) |
| Pin 18 | LE — Latch enable |
| Pin 19 | CLR — Clear / reset input |
| Pin 20 | NC — Not connected (per datasheet) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | NC — Not connected (per datasheet) |
Single-Channel Safe Operating Area (per output)
Typical Applications
HIP0050IB is suitable for 6 applications: Automotive Lamp Driver Bank, Industrial Relay and Contactor Module, Solenoid and Valve Array, Vacuum-Fluorescent and LED Display Driver, CNC and Robotics Stepper-Driver Sub-System, Building Automation and HVAC Outputs.
Automotive Lamp Driver Bank
The HIP0050IB's 50 V drain-source breakdown and eight 0.3 A open-drain outputs make it a natural fit for automotive lamp-driver modules - turn signals, brake lights, interior illumination, and courtesy lamps. Each channel sinks the lamp cathode to ground while the lamp's high side connects to the 12 V battery, allowing logic-level serial control from an MCU without bulky discrete drivers. The integrated over-current flag alerts the body controller to filament shorts before downstream wiring is damaged, and the wide operating temperature range covers underhood and cabin environments. Designers typically add a 1N400x flyback diode across each inductive bulb circuit; the BiMOS outputs tolerate the resulting 50 V transient with margin.
Recommended
Industrial Relay and Contactor Module
In industrial PLC and process-control output modules, the HIP0050IB directly drives small 24 V relays and contactor coils at up to 0.3 A per channel, replacing eight discrete MOSFETs plus protection circuitry. The synchronous serial interface lets one SPI-capable MCU scan and command 64 or more relays through cascaded HIP0050IBs, dramatically reducing GPIO usage. Built-in over-current detection flags a stuck relay coil or wiring fault to the controller for predictive maintenance. The 50 V breakdown handles 24 V bus transients on long factory wiring, and the wide-body SOIC power package sustains continuous 8-channel operation with a copper pour on the PCB. Designers typically pair it with an isolated 24 V supply and TVS protection.
Recommended
Solenoid and Valve Array
The HIP0050IB's eight low-side drivers are well-suited to pneumatic and hydraulic solenoid banks, fuel-injector test rigs, and irrigation valve matrices. Each channel can pulse a 24 V solenoid at the rated 300 mA, and the serial interface enables precise timing for PWM current profiling or proportional control. Over-current feedback identifies clogged valves or shorted coils, allowing the controller to bypass a faulty branch. Because solenoid inductance generates flyback voltages, designers must add flyback diodes or TVS across each coil; the HIP0050IB's 50 V breakdown gives margin for that transient. Cascading two devices yields 16 channels from one SPI bus, common in multi-zone irrigation and process skids.
Recommended
Vacuum-Fluorescent and LED Display Driver
VFD and large multiplexed LED displays benefit from the HIP0050IB's eight low-side sinks, which can drive row or column lines in a multiplexed matrix. With 50 V breakdown, the part easily handles VFD anode voltages up to 30-40 V and logic-level serial control from a display controller. The serial daisy-chain feature simplifies grid wiring in large dot-matrix signs where parallel control lines would be impractical. Designers add per-row current-setting resistors and use the over-current flag to detect LED open or short faults. The wide-body SOIC handle the moderate dissipation of 8 x 100 mA multiplexed operation without a heatsink.
Recommended
CNC and Robotics Stepper-Driver Sub-System
Within CNC machines and small robotics, the HIP0050IB is used as a low-side auxiliary driver for cooling fans, indicator stacks, end-stop indicators, and small relay-logic signals that surround a main motion controller. The 0.3 A per-channel rating matches typical 24 V fans, status LEDs, and signal relays; the serial interface keeps wiring minimal in space-constrained enclosures. The over-current flag helps protect expensive downstream motion hardware from wiring faults. Designers typically cascade one HIP0050IB for 8 auxiliaries per motion axis, alongside higher-current stepper drivers such as the DRV8886 for the main motor phases.
Recommended
Building Automation and HVAC Outputs
The HIP0050IB fits building-automation controllers where it drives 24 V actuators, damper motors, indicator LEDs, and small relays in HVAC and access-control panels. The serial interface consolidates 8 outputs per chip, allowing a wall-mount controller to handle 32-64 loads from one SPI bus via cascaded HIP0050IBs. The 50 V rating tolerates long cable runs with inductive ringing, and the over-current flag supports predictive maintenance in commercial buildings. Operating from -40 C to +125 C, the part is also suited to outdoor equipment cabinets. Designers commonly use it with a Cortex-M0 class MCU running a BACnet or Modbus stack.
Recommended
Recommended Products Summary
Engineering reference data for HIP0050IB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | HIP0050IB-HC | HIP0050IBZ |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 24-pin SOIC wide-body (IB) | 24-pin SOIC wide-body - same | 24-pin SOIC wide-body - same |
| Number of Outputs | 8 | 8 | 8 |
| Continuous Output Current (per channel) | 0.3 A | 2 A | 0.3 A |
| Drain-Source Breakdown Voltage | 50 V minimum | 50 V | 50 V |
| Interface | Synchronous serial (cascadable) | Synchronous serial (cascadable) | Synchronous serial (cascadable) |
| Over-Current Fault Flag | Yes (latched, auto-retry) | Yes (latched, auto-retry) | Yes (latched, auto-retry) |
| Lifecycle Status | Obsolete | Obsolete (Rochester stock only) | Obsolete |
Key Differentiators
- Cascadable serial interface for high channel count (vs Discrete MOSFET arrays)
- Integrated over-current fault flag with auto-retry (vs Discrete N-MOSFET with external sense resistor)
- Power BiMOS process for 50 V / 0.3 A in a single die (vs Standard CMOS octal low-side drivers)
Design Notes
Estimated: with all eight channels on at 0.3 A continuous, total on-state loss in the HIP0050IB is roughly 8 x I x R_DS(on). With a typical R_DS(on) near 2 ohm per channel at 25 C, package dissipation can approach 1.4 W, requiring copper pour on the SOIC pad and possibly airflow to stay within the 125 C junction limit. For higher ambient temperatures or fully-loaded continuous operation, derate to 200 mA per channel or switch to the 2 A HIP0050IB-HC.
The HIP0050IB open-drain outputs require flyback protection when driving inductive loads (relays, solenoids, lamps with cold-filament inrush). Place a 1N400x or TVS across each load; without it, the drain inductive spike will exceed the 50 V breakdown. Also remember that the serial interface is level-translated, so the SCLK / SDI / LE logic levels must match VCC (typically 5 V). For 3.3 V microcontrollers, add a level shifter or use a HIP0050IB variant that supports 3.3 V logic.
Use a star-ground layout that ties the HIP0050IB GND pin directly to the load supply return at the IC, not via long traces to a remote ground. Place a 100 nF decoupling capacitor on VCC as close to pin 10 as possible, and a bulk 10 uF tantalum on VP (load supply) at pin 12. Route the serial interface traces (SCLK, SDI, SDO, LE) away from the OUTx traces to avoid noise coupling. For multi-device cascades, keep the SDO-to-SDI trace short and matched to maintain timing margin.
Compliance Information
Compliance status not stated in the verified web data; check the Renesas HIP0050 datasheet environmental section for confirmation. Standard HIP0050IB is not AEC-Q100 qualified; Harris-era part was qualified to industrial/automotive stress levels. RoHS / lead-free finish varies by suffix (IB vs IBZ).
