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The UC2844ALQD8RQ1 device is a current-mode PWM controller launched by TI and is an improved version of the UCx84x series. This device is optimized for offline and DC/DC converters and features the following core characteristics:

The UC284xAQ/UC284xA-Q1 has improved the output driver and reduced the operating/starting current

Optimized for offline and DC-DC converters

Low starting current (<0.5mA

Fine-tune the discharge current of the oscillator

Automatic feedforward compensation

Pulse-by-pulse current limiting

Enhanced load response characteristics

Under-voltage lock with hysteresis

Dual-pulse suppression

High-current totem pole output

Internal fine-tuning of the bandgap reference

A working voltage up to 500 kHz

Provide functional safety functional documentation and assist in the design of functional safety systems

It complies with the AEC-Q100 standard (UC284xA-Q1) and has the following results:

Device temperature class: 1 (-40°C to 125°C)

Device human body model (HBM) classification grade: 2 (±2kV)

Device CDM classification grade: C6 (≥1000V)

The UC2844ALQD8RQ1 controller features the function of controlling current mode or switching mode power supplies, including a higher VCC range (36V), a lower starting current (0.25mA), a stricter operating current tolerance (up to 15mA), and a faster cycle-by-cycle current protection response (100ns).

Typical applications

The UC2844ALQD8RQ1 controller is suitable for scenarios such as industrial automation, communication equipment, and power adapters that require high-precision voltage regulation. Its high-frequency characteristics are particularly suitable for power management in miniaturized devices, such as portable electronic products.

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