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Automotive qualified products (AEC-Q100/Q101)
NEX91207DF-Q100

NEX91207DF-Q100 Production

Automotive 70 mA, 40 V tracking LDO with 5 mV tracking tolerance

The NEX91207-Q100 is a Low-Dropout (LDO) voltage-tracking regulator with a precise tracking tolerance 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 systems, 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 ADJ/EN pin with an accuracy of ±5 mV over the specified temperature range. 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 ADJ/EN 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 device operates across a temperature range from -40 °C to 125 °C ambient and -40 °C to 150 °C junction. It is available in two package options with different thermal resistance, including SOT8105-1 (SOT23-5S) and SOT8104-1 (SOT23-5).

Figure 1. Typical application
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Product details

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Temperature grade 1 (Tamb): -40 °C to 125 °C
    • Junction temperature (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: 70 mA
  • Low dropout voltage:
    • 215 mV typical at 70 mA (VOUT = 5 V)
  • Low quiescent current (IQ):
    • 40 µA typical quiescent current at light loads
    • 0.75 µA typical shut-down current
  • Active output discharge with a typical discharge current of 700 µA
  • Stable with a wide range of ceramic output-stability cap:
    • ESR from 0.001 Ω to 3 Ω; output capacitor from 1 µF to 220 µF
  • Integrated various fault protections:
    • Reverse polarity protected input
    • Reverse current protection
    • Thermal shutdown
    • Short-circuit to ground and battery protection
    • Over-current protection
  • Package options:
    • SOT8105-1 (SOT23-5S (NSOT23-5)): RθJA= 131.7 °C/W
    • SOT8104-1 (SOT23-5): RθJA= 175.6 °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 Package Body size (nom)

NEX91207DE-Q100

SOT23-5S

2.93 mm x 1.50 mm

NEX91207DF-Q100

SOT23-5

2.93 mm x 1.63 mm

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