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AP1609 Datasheet(PDF) 1 Page - Anachip Corp |
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AP1609 Datasheet(HTML) 1 Page - Anachip Corp |
1 / 8 page AP1609 PWM/PFM Dual Mode Step-up DC/DC Converter 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 accompany the sale of the product. Rev.1.2 Mar.25, 2005 1/8 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 Applications - Electronic Information Organizers - Palmtops - Cellular and portable phones - Portable Audio Systems - Various Multi-function Power Supplies 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 components, output voltage ( FB) can be set up at will. With a 300KHz switching frequency, the size of the external components 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. Pin Assignment 1 2 3 4 8 7 6 5 CE LX FB AP1609 LX GND GND PGND Vcc SOP-8L 1 3 2 4 8 6 7 5 GND Vcc Vcc CE LX PGND PGND FB AP1609 TSSOP-8L Pin Descriptions Pin No. Pin Name SOP TSSOP Description FB 3 5 Feedback pin CE 1 4 Chip Enable: H: Enable L: Disable Vcc 2 2、3 IC signal power supply pin PGND 4 6、7 Power MOSFET GND LX 5、68 Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI. GND 7、8 1 GND Pin |
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