双极性晶体管

二极管

ESD保护、TVS、滤波和信号调节ESD保护

MOSFET

氮化镓场效应晶体管(GaN FET)

绝缘栅双极晶体管(IGBTs)

模拟和逻辑IC

汽车应用认证产品(AEC-Q100/Q101)
NEX91730PB-Q100

NEX91730PB-Q100 Production

Automotive 300 mA, 40 V tracking LDO with 5 mV tolerance

The NEX91x30-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 300 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).

Figure 1. Typical application
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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: 300 mA
  • Low dropout voltage: 440 mV typical at 300 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

Table 1. Device information
Part number PG Cable compensation

NEX91530PB-Q100

Y

N

NEX91630PB-Q100

N

Y

NEX91730PB-Q100

 Y Y (dynamic)

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