APW7142

Product Summary

The APW7142 is a 3A synchronous-rectified Buck converter with integrated 70mW power MOSFETs. The APW7142, 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 APW7142 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. The applications of the APW7142 include OLPC, UMPC, Notebook Computer, Handheld Portable Device, Step-Down Converters Requiring High Efficiency and 3A Output Current.

Parametrics

APW7142 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; < 100ns: -5 ~ VIN+5V; (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 W; (7)Maximum Junction Temperature: 150℃; (8)TSTG, Storage Temperature: -65 ~ 150℃; (9)TSDR, Maximum Lead Soldering Temperature, 10 Seconds: 260℃.

Features

APW7142 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; (13)Over-Temperature Protection; (14)<3mA Quiescent Current in Shutdown Mode; (15)Small SOP-8 Package; (16)Lead Free and Green Devices Available(RoHS Compliant).

Diagrams