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The following are detailed information about the BTS5235-2L chip:
Technical Specifications
- Operating Voltage: 4.5 V – 28 V (Typical 13.5 V)
- On-Resistance: 60 mΩ (per channel, 25°C)
- Continuous Output Current: 3.5 A (single channel, Tj < 150°C)
- Peak Current Limit: ≈ 23 A (typical, VDS = 7 V)
- Number of Channels: 2 (independent high-side DMOS)
- Operating Junction Temperature: -40°C – +150°C
- Power Dissipation: 1.6 W (PCB 6 cm² copper, 25°C)
- Input Voltage Level: CMOS-compatible (1.8 V – 5 V)
- Diagnostic Feedback: Enhanced IntelliSense™ current-proportional output (kILIS ≈ 2700)
- Protection Features:
- Overcurrent/short-circuit limiting (three-level foldback)
- Overtemperature shutdown (Tj ≈ 150°C, 7 K hysteresis)
- Undervoltage lockout
- Overvoltage clamp (41 V – 53 V)
- Reverse battery protection (-17 V, requires an external ground resistor)
- Loss-of-GND protection
- ESD HBM ±4 kV (pin)
Notes
- All VBB and OUT pins must be connected together to ensure the rated current.
- Diagnostic pins IS1/IS2 require an external current-limiting resistor (typically 1 kΩ) connected to the MCU ADC.
- Under reverse battery conditions, the GND pin current is limited to 65 mA; an external RGND must be configured according to the datasheet.
- Overcurrent protection is self-resetting; thermal design should be considered for extended heavy loads.
Summary
The BTS5235-2L is an automotive-grade, dual-channel intelligent high-side switch with low on-resistance, comprehensive diagnostics, and multiple protection features. It is suitable for replacing traditional relays and fuses, enabling highly reliable, compact automotive load driving solutions.
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Product Description:
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