NB679GD-Z NB679GD ALT* MPS IC Marking ALTF ALTE ALTH ALTN ALTJ

The NB679GD-Z, also known as NB679GD / NB679G, is a high-efficiency fixed 5V, 8A synchronous buck regulator designed for compact laptop and industrial power systems. It supports a wide 5.5V to 28V input range and delivers excellent transient performance using Adaptive COT control. This device integrates a 100mA LDO with switch-over, ultrasonic mode over 25kHz, 1% reference accuracy, internal soft-start, and full protection features including OCP, OVP, UVP, and thermal shutdown. It comes in a QFN-12 (2×3mm) package ideal for dense motherboard designs.The ALT-series NB679 is identified by authentic MPS top markings such as ALTF, ALTE, ALTH, ALTN, and ALTJ, all belonging to the ALT* marking family used only for NB679 GD-Z batches.

Technicians use this IC to repair 5V rail failures, no power issues, unstable load, auto-restart faults, and power sequencing problems on laptops and embedded boards. OKSpare IC supply, IC ready stock in Nehru Place, IC available at Delhi, quality tested by OKSpare team Delhi, OKSpare tests the quality and dispatches safely.

Technical Summary

• Part Number: NB679GD-Z / NB679GD
• Marking Family: ALT*
• Valid Markings: ALTF / ALTE / ALTH / ALTN / ALTJ
• Package: QFN-12 (2×3mm)
• Input Range: 5.5V – 28V
• Output: Fixed 5V
• Output Current: 8A continuous / 10A peak
• Features:
• Ultrasonic mode (>25 kHz)
• 100 µA low quiescent current
• 5V/100mA integrated LDO
• Adaptive COT control
• DC Auto-Tune load regulation
• Stable with POSCAP & ceramic capacitors
• 700 kHz switching frequency
• Soft start, output discharge
• OCP/OVP/UVP/thermal shutdown
• Latch-off via EN or power cycle

At OKSpare, your reliable Delhi Nehru Place supplier, we offer genuine MPS series ICs with high quality, best prices, and fast nationwide delivery.