Body load control
Explore high-side switching and current monitoring for DC body-electronics loads.
Component building blocks
Functional blocks for selection; device connections and component values depend on your design.
High-side load switching
Control a DC load using the handbook-listed smart high-side switches. Match the operating-voltage range and load current to the circuit.
Current monitoring
Amplify the voltage across a current-sense resistor. Check input common-mode range, gain and error budget.
Auxiliary power rails
Generate local controller and analog rails with step-down conversion and LDO regulation. Match the input range and current to the rail.
Electrical parameters & cross references
All handbook parameters for the components shown above. Scroll each table horizontally to view every column.
Smart Power Switches
| BI Part Number | Cross Reference | Function | Operating voltage (V) | Overvoltage-protection supply (V) | Input voltage (V) | Input current (mA) | Load current (A) | IS-pin current (mA) | Package |
|---|---|---|---|---|---|---|---|---|---|
| BIKW4141 | BTS4141N | Smart high-side power switch | 12–45 | 47 | 0–5 | ±5 | — | — | SOT223 |
| BIKW50085 | BTS50085 | Smart high-side power switch | 5–58 | 70 | — | +15 / −250 | 38 | +15 / −250 | TO-220-7 |
Current-sense Amplifiers
| BI Part Number | Cross Reference | Function | Supply voltage (V) | Input offset voltage (µV) | Input bias current (nA) | Supply current (mA) | Common-mode voltage (V) | Gain (V/V) | Package |
|---|---|---|---|---|---|---|---|---|---|
| BICM193 | INA193 | Current-sense amplifier | 18 | 500 | 210000 | 1 | 0–70 | 20 | SOT23-5 |
| BICM194 | INA194 | Current-sense amplifier with 50× gain | 18 | 500 | 210000 | 1 | 0–70 | 50 | SOT23-5/6 |
Buck Converters
| BI Part Number | Cross Reference | Function | Rectification | Input voltage (V) | Output voltage (V) | Output current (A) | Quiescent current (mA) | Switching frequency (kHz) | Efficiency (%) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| BIW54302PMC | — | 28 V input step-down DC/DC converter | Synchronous | 4.5–28 | ADJ(VFB=0.6V) | 3 | 0.14 | 500 | 90 | TSOT23-6 |
Low-dropout Regulators
| BI Part Number | Cross Reference | Function | Input voltage (V) | Output voltage (V) | Initial accuracy | Output current (A) | Ripple rejection | Quiescent current (mA) | Package |
|---|---|---|---|---|---|---|---|---|---|
| BIW3042PM1C | LT3042 | 200 mA LDO regulator | ~20V | 1.5–15 | ±1% | 0.2 | 92dB@10kHz | 4 | DFN-10 |
Selection based on documented BI component functions. Cross references are comparison aids and do not establish drop-in compatibility or transfer another manufacturer’s qualification.