DIA7976 datasheet(1/25 Pages) DIOO

Il numero della parte	DIA7976

Spiegazioni elettronici	500 mA, High-Accuracy LDO with Power-Good for Automotive Application

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Produttore elettronici	DIOO [DIOO MICROCIRCUITS CO., LTD]

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DIA7976

Version 1.9, Apr 2025

www.dioo.com

I

500 mA, High-Accuracy LDO with

Power-Good for Automotive Application



Features



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



Non-active output discharge: DIA7976B



Stable with a 1 µF or larger capacitor



Applications



Automotive head units



Front and rear cameras



Automotive cluster displays



Telematics control units



Medium, short range radar



Package Information

Part Number

Package

Body Size

DIA7976

DFN6

2 mm × 2 mm

DFN8

3 mm × 3 mm

SOT23-5

2.9 mm × 1.6 mm



Description

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.



Simplified Schematic

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