DIA7976

The DIA7976 is a 500 mA ultra-low-dropout regulator with power-good function. The DIA7976 is designed for applications requiring low quiescent current and provides fast line and load transient performance. Additionally, DIA7976 features high Power Supply Ripple Rejection (PSRR) at up to 500 mA. The DIA7976 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 DIA7976 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 DIA7976 helps reduce the thermal dissipation during short-circuit events with internal short-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: 64 dB at 1 kHz
• Power-good output options:

Open-drain:DIA7976AO and DIA7976BO

Push-pull: DIA7976AP and DIA7976BP

• 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:

150 mV at 500 mA, VOUT = 3.3 V

• Low quiescent current：

27 µA typical at no load

100 nA shutdown mode typical current

• Active output discharge: DIA7976A
• Stable with a 1 µF or larger capacitor