NEX91X15-Q100
Automotive 150 mA, 40 V tracking LDO with 5 mV tolerance
The NEX91x15-Q100 is a Low-Dropout (LDO) voltage-tracking regulator with high tracking accuracy of 5 mV (max) and excellent load and line transient responses. It is specifically designed to power off-board sensors in automotive applications such as power train, safety, and Body Control Modules (BCMs). The device supports a wide input voltage range from 4 V to 40 V (up to 45 V transient) to withstand cold-crank and load-dump transient conditions.
The device output tracks the reference voltage applied to the EN/ADJ pin with an accuracy of ±5 mV over the specified temperature range for loads up to 150 mA. The high tracking accuracy ensures a precise power supply for off-board sensors and modules, improving the performance of radiometric sensors such as pressure and position sensors.
The device switches to standby mode by pulling down the EN/ADJ pin, which enables an ultra-low shutdown current of 0.75 µA typical to extend battery life. The device integrates protection features such as battery reverse polarity protection (-42 V), output reverse current protection, output short-to-battery and ground protection, current limit, and thermal shutdown. These protections guard against the high risk of cable failures in an off-board power system. The power-good (PG) output indicates an over voltage or under voltage condition of the tracking output.
The device operates across a temperature range from -40 °C to 125 °C ambient and -40 °C to 150 °C junction. It is available with thermal enhanced package SOT8063-2 (HSO8).
Features and benefits
- AEC-Q100 qualified for automotive applications
- Temperature grade 1 (Tamb): -40 °C to 125 °C
- Junction temperature range (Tj): -40 °C to 150 °C
- Input voltage range: 4 V to 40 V
- Absolute maximum input range: -42 V to 45 V
- Wide output voltage range: 2 V to 40 V
- Absolute maximum output range: -5 V to 45 V
- Tight output tracking tolerance: ±5 mV
- Maximum output current: 150 mA
- • Low dropout voltage:
- 220 mV typical at 150 mA (VOUT = 5 V)
- Low quiescent current (IQ):
- 45 µA typical quiescent current at light loads
- 0.75 µA typical shut-down current
- Over voltage and under voltage indication at PG output
- Active output discharge with a typical discharge current of 800 µA
- Stable with a wide range of ceramic output-stability cap:
- ESR from 0.001 Ω to 5 Ω; output capacitor from 4.7 µF to 470 µF
- Integrated various fault protections:
- Reverse polarity protected input
- Reverse current protection
- Thermal shutdown
- Short-circuit to ground and battery protection
- Over-current protection
- HSO8 package available:
- SOT8063-2 (HSO8): RθJA = 47.5 °C/W
Applications
Supply for off-board sensors
High precision voltage tracking
Body Control Modules (BCMs)
Power switch for off-board loads
| Part number | PG | Cable compensation |
|---|---|---|
NEX91515PB-Q100 |
Y |
N |
NEX91615PB-Q100 |
N |
Y |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| NEX91515PB-Q100 | NEX91515PB-Q100Y (935692289518) |
Active | N91515 |
HSO8 (SOT8063-2) |
SOT8063-2 | SOT8063-2_518 | |
| NEX91615PB-Q100 | NEX91615PB-Q100Y (935692290518) |
Active | N91615 |
HSO8 (SOT8063-2) |
SOT8063-2 | SOT8063-2_518 |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| NEX91515PB-Q100 | NEX91515PB-Q100Y | NEX91515PB-Q100 |
|
|
| NEX91615PB-Q100 | NEX91615PB-Q100Y | NEX91615PB-Q100 |
|
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Documentation (3)
| File name | Title | Type | Date |
|---|---|---|---|
| NEX91X15_Q100 | Automotive 150 mA, 40 V tracking LDO with 5 mV tolerance | Data sheet | 2025-06-19 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| SOT8063-2 | HSO8: Plastic, thermal enhanced small outline package; 8 leads;1.27 mm pitch; 4.9 mm × 3.9 mm × 1.7 mm body | Package information | 2025-04-14 |
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