(China (Mainland))
Product Summary
The APW7142KI is a 3A, 12V synchronous-rectified buck converter. The APW7142KI is a 3A synchronous-rectified Buck converter with integrated 70mW power MOSFETs. The APW7142KI, designed with a current-mode control scheme, can convert wide input voltage of 4.3V to 14V to the output voltage adjustable from 0.8V to VIN to provide excellent output voltage regulation. For high efficiency over all load current range, the APW7142KI is equipped with an automatic Skip/PWM mode operation. At light load, the IC operates in the Skip mode, which keeps a constant minimum inductor peak current, to reduce switching losses. At heavy load, the IC of the APW7142KI works in PWM mode, which inductor peak current is programmed by the COMP voltage, to provide high efficiency and excellent output voltage regulation.
Parametrics
APW7142KI absolute maximum ratings: (1)VIN VIN Supply Voltage (VIN to AGND): -0.3 ~ 15 V; (2)VLX LX to GND Voltage > 100ns: -1 ~ VIN+1 V;< 100ns: - 5 ~ VIN+5 V; (3)PGND to AGND Voltage: -0.3 ~ +0.3 V; (4)EN to AGND Voltage: -0.3 ~ VIN+0.3 V; (5)FB, COMP to AGND Voltage: -0.3 ~ 6 V; (6)PD Power Dissipation: Internally Limited; (7)Maximum Junction Temperature: 150 ℃; (8)TSTG Storage Temperature: -65 ~ 150 ℃; (9)TSDR Maximum Lead Soldering Temperature, 10 Seconds: 260 ℃.
Features
APW7142KI features: (1)Wide Input Voltage from 4.3V to 14V; (2)Output Current up to 3A; (3)Adjustable Output Voltage from 0.8V to VIN. ±2% System Accuracy; (4)70mW Integrated Power MOSFETs; (5)High Efficiency up to 95%. Automatic Skip/PWM Mode Operation; (6)Current-Mode Operation. Easy Feedback Compensation. Stable with Low ESR Output Capacitors. Fast Load/Line Transient Response; (7)Power-On-Reset Monitoring; (8)Fixed 500kHz Switching Frequency in PWM Mode; (9)Built-In Digital Soft-Start and Soft-Stop; (10)Current-Limit Protectionwith FrequencyFoldback; (11)123%Over-Voltage Protection; (12)Hiccup-Mode 50%Under-Voltage Protection
Diagrams
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