The DIA7986 is a 1 A ultra-low-dropout regulator with power-good function. The DIA7986 is designed for applications requiring low quiescent current and provides fast line and load transient performance. Additionally, DIA7986 features high Power Supply Ripple Rejection (PSRR) at up to 1 A. The DIA7986 operates with an input voltage range from 1.7 V to 6.0 V and the output voltage is adjustable from 0.55 V to 5.5 V. The DIA7986 is stable with small ceramic output capacitors, allowing for a small overall solution size. An error amplifier and precision band-gap provide an accuracy of ±2% over temperature. The DIA7986 helps reduce the thermal dissipation during short-circuit events with internal foldback current limit. The device also contains integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features.
Product attributes
- AEC-Q100 qualified:
− Device ambient temperature: -40°C ≤ TA ≤ 125°C
− Device junction temperature: -40°C ≤ TJ ≤ 150°C
- Operating input voltage range: 1.7 V to 6.0 V
- Operating output voltage range:
− Fixed options: 0.65 V to 5.0 V
− Adjustable option: 0.55 V to 5.5 V
- High PSRR: 56 dB at 1 kHz
- Open-drain mode power-good output: DIA7986AA/BA
- Adjustable soft-start time: DIA7986AN/BN
- Output accuracy:
− ±1% at TA = 25°C
− ±1.5% at -40°C ≤ TA ≤ 85°C
− ±2% at -40°C ≤ TA ≤ 125°C
- Ultra-low dropout: 220 mV at 1 A, VOUT = 3.3 V
- Low quiescent current：
− 31 µA typical at no load
− 100 nA shutdown mode typical current
- Active output discharge: DIA7986A
- Stable with a 1 µF or larger capacitor
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