Texas Instruments TPS1HC120-Q1 Single-Channel Smart High-Side Switch
Texas Instruments TPS1HC120-Q1 Single-Channel Smart High-Side Switch is a fully protected high-side switch with a charge pump and an integrated NMOS power FET, designed to meet the requirements of 12V automotive systems. The low RON (120mΩ typical) minimizes device power dissipation when driving a wide range of output load currents up to 1.5A.
The device integrates protection features, including an output clamp, thermal shutdown, and current limit. These features improve system robustness during fault events such as short circuits. The device implements a selectable high-accuracy current limit, improving system reliability by reducing inrush current when driving large capacitive loads. For the A/B variants, the device also provides accurate current sensing, enabling improved load diagnostics, such as overload and open-load detection. Low-logic high-threshold VIH of 1.5V on the input pins allows the use of MCUs down to 1.8V.
The Texas Instruments TPS1HC120-Q1 can drive a wide range of resistive, inductive, and capacitive loads, including ADAS cameras, LEDs, relays, solenoids, and heaters. The device is available in an 8-pin, ultra-small-form-factor SOT package with 2.1mm × 1.6mm dimensions and 0.5mm pin pitch, minimizing PCB footprint.
Features
- Single-channel smart automotive high-side switch with full diagnostics
- Open-drain status output
- Current sense analog output (1)
- ON and OFF state open-load detection (1)
- 3V to 28V wide operating voltage
- Low standby current of < 0.5µA at 85°C
- –40°C to 150°C operating junction temperature
- Selectable current limit from 0.2A to 2.1A
- Protection
- Overload and short-circuit protection
- Inductive load negative voltage clamp
- Undervoltage Lockout (UVLO) protection
- Thermal shutdown and swing with self-recovery
- Loss-of-GND, loss-of-battery, and reverse battery protection
- Auto-retry on soft-short, latch on hard-short (1)
- Diagnostic
- Fault report for fast interrupt
- On- and Off-state output open-load and short-to-battery detection(1)
- Overcurrent and short-to-ground detection
- Thermal shutdown and swing detection
- Qualifications
- AEC-Q100 qualified for automotive with a –40°C to 125°C, TA temperature
- Electrical transient disturbance immunity certification of ISO7637-2 and ISO16750-2
- 8-pin small form factor SOT package
(1) Please see the device comparison table for features available to a specific variant.
Applications
- ADAS modules
- Automotive display module
- Body control module
Device Comparision Table
Functional Block Diagram
