AP1609 Datasheet | Anachip

Features - Input Voltage Range: 2.5~6V - Output Voltage Range: 3.0~17V（±2.5%） - PWM/PFM Switching Control - Oscillator Frequency: 300KHz（±20%） - High Efficiency: 91%（Typ .） - Stand-by Current: ISTB＝1µA.（Typ.） - Built-in internal N-Channel MOS - Pb-Free Package: SOP-8L/TSSOP-8L - General Descriptions The AP1609 is high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode. Output voltage is programmable with 1.23V of standard voltage supply internal, and using externally connected ponents, output voltage （FB） can be set up at will. With a 300KHz switching frequency, the size of the external ponents can be reduced. Control switches from PFM to PWM during light loads with the AP1609（PWM/PFM switchable）and the series is highly efficient from light loads to large output currents. During stand-by time （ CE pin “Low” ） , current consumption is reduced to 1µA. - Applications - Electronic Information Organizers - Palmtops - Cellular and portable phones - Portable Audio Systems - Various Multi-function Power Supplies - Pin Assignment - Pin Descriptions Pin Pin No. Description Name SOP TSSOP FB 3 5 Feedback pin Chip Enable: CE 1 4 H: Enable L: Disable Vcc 2 2、3 IC signal power supply pin PGND 4 6、7 Power MOSFET GND Switch Pin. Connect external inductor/diode 8 LX 5、6 here. Minimize trace area at this pin to reduce EMI. GND 7、8 1 GND Pin CE 1 Vcc 2 FB 3 PGND 4 AP1609 8 GND 7 GND 6 LX 5 LX SOP-8L GND Vcc Vcc CE 1 2 3 4 AP1609 8 7 6 5 LX PGND PGND FB TSSOP-8L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent acpany the sale of the product. Rev.1.2 Mar.25, 2005 1/8 PWM/PFM Dual Mode Step-up DC/DC Converter - Ordering Information AP1609 X X Package Packing A : Taping S : SOP-8L TS: TSSOP-8L -...