AT1392

Features:

• High efficiency
• Using external P and N channel MOSFET
• Maximum Duty 100%
• Oscillation frequency 600KHz
• Soft Start by an external capacity
• Output voltage accuracy ±2%
• Built-in ON/OFF Function
• Stand-by current max. 10µA
• Quiescent Current 1mA
• Input voltage: 2.5V ~7.0V


Application

• Power Supply for portable devices


Pinout





Specifications

Parameter	Condition	Rated Value		Unit
		Min.	Max.
Power supply voltage	-	-	+7	V
Source Average Current of OUT	-		-50	mA
Sink Average Current of OUT	-	-	50	mA
Source Peak Current of OUT	-	-	-200	mA
Sink Peak Current of OUT	-	-	200	mA
Input Voltage to Error Amplifier	-	-	6.5	V
Continuous power dissipation	TSSOP8(Ta=+25)	-	500	mW
Operating temperature	-	-30	+85
Storage temperature	-	-55	+125

Description

The AT1392 provides complete control and protection for a DC/DC converter optimized for high-performance micro-processor applications. It is designed to drive one P-Channel and one NChannel in a buck topology. The AT1392 integrates all of the control, output adjustment into a single package. The output voltage of the converter can be precisely regulated with a maximum tolerance of ±2% over temperature and line voltage variations. The AT1392 is a family of low-noise synchronous step-down DC/DC converters that is ideally suited for systems powered from a 1-cell Li-ion battery or from a 3- cell to 4-cell NiCd, NiMH, or alkaline battery. It can also be used to USB-Based power system.