| Part number | SA21803AHTP |
|---|---|
| Operating voltage (max) (V) | 36 |
| Operating voltage (min) (V) | 8 |
| Channel(#) | 1 |
| Ron (typ) (mΩ) | 38 |
| Imax (A) | 4.5 |
| Current limit (min) (A) | 38 |
| Current limit (max) (A) | 56 |
| Current limit type | fixed |
| Features | Current sense/monitor, Thermal shutdown, Under voltage lock out |
| Operating temperature range(°C) | -40 to 125 |
| Package | TSOP14E |
Proportional Load Current Sense
Open Load in OFF State
Short Circuit to Battery and Ground
Over Temperature
Stable Diagnostic Signal During Short Circuit
Enhanced kILIS Dependency withTemperature and Load Current
Stable Behavior during Under Voltage
Reverse Polarity Protection with External Components
Secure Load Turn-off during Logic Ground Disconnect with External Components
Over Temperature Protection with Latch
Overvoltage Protection with External Components
Voltage Dependent Current Limitation
Enhanced Short Circuit Operation
The SA21803A is a 50mΩ smart high-side power switch with single channel, mainly providing overload protection and signal diagnostics. The power switch is an N-channel vertical power MOSFET with charge pump.
The package type of SA21803A is TSOP14E with exposed pads. The main purpose of SA21803A is to drive lamps up to P21W 24V and LEDs in the tough automotive environment.
| Title | Date |
|---|---|
| DS_SA21803A Datasheet | 2026-03-10 |
| EVB_SA21803AHTP EVB User Guide | 2026-03-10 |
| Automotive_Solutions_Q2_2026 | 2026-06-12 |
