AT1366

Features:

• High efficiency (95%) possible
• No Schottky Diode Required
• 800mA Output Current at 5V input 3.3V output
• Oscillation frequency 1.0MHz
• Built-in ON/OFF Function
• Low Dropout Operation: 100% Duty Cycle
• Stand-by current max. 1µA
• Input voltage: 2.5V ~5.5V



Application

• Power Supply for portable devices


Pinout




Specifications

Parameter	Condition	Rated Value		Unit
		Min.	Max.
Power supply voltage	-	-0.3	+6.0	V
Input Pin Voltage	RUN,FB	-0.3	VIN	V
	SW	-0.3	VIN+0.3	V
P-Channel Switch Source Current(DC)	-	-	1000	mA
N-Channel Switch Sink Current(DC)	-	-	1000	mA
Peak SW Sink and Source Current	-	-	1.5	A
Thermal Resistance from Junction to Ambient JA	SOT25	-	165	/W
Operating temperature TA	-	-35	+85
Storage temperature	-	-55	+150

Description

The AT1366 provides complete control for a DC/DC converter optimized for high-performance microprocessor appli-cations. AT1366 is operated on current mode architecture for excellent line and load transient response. 1MHz operation frequency is allowing the use of small surface mount inductor and capacitor. The internal synchronous switch in-creases efficiency and eliminates the need for an external Schottky diode. The AT1366 is a family of low-noise syn-chronous 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.