AP1601M8G-13

AP1601 STEP-UP DC/DC CONVERTER Features • • • • • • • • A Guaranteed Start-Up from less than 0.9 V. High Efficiency. Low Quiescent Current. Less Number of External Components needed. Low Ripple and Low Noise. Space Saving Packages: MSOP-8L and MSOP-10L. MSOP-8L and MSOP-10L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish / RoHS Compliant (Note 1) General Description The AP1601 is a high efficiency step-up DC/DC converter for applications using 1 to 4 NiMH battery cells. Only three external components are required to deliver a fixed output voltage of 3.3V or 5V. The AP1601 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower compared with the circuits operating in PSM mode. The PFM control circuit operating in 100KHz (max.) switching rate results in smaller passive components. The space saving MSOP packages make the AP1601 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones. Applications • • • • • • Pagers Cameras Wireless Microphones Pocket Organizers Battery Backup Suppliers Portable Instruments Typical Application Circuit VIN + 100uF 22uH ON OFF SHDN LX OUT + R5 Adj Output (1.8V to 4.0V) up to 300 mA Low- Battery Detect In LBI LBO REF 0.1uF GND FB 220uF Low- Battery Detect OUT R5 ) R6 R6 Suggest 100K~200K FB=Vout, Vout=3.3V FB=GND, Vout=5V Vout=1.2 × (1+ R6 AP1601 Rev. 5 1 of 12 www.diodes.com SEPTEMBER 2009 © Diodes Incorporated AP1601 STEP-UP DC/DC CONVERTER Ordering Information AP1601 XXX G - 13 Package M8 : MSOP-8L M10 : MSOP-10L Package Code M8 M10 Packaging (Note 2) MSOP-8L MSOP-10L Green G : Green Packing 13 : Tape & Reel Device AP1601M8G-13 AP1601M10G-13 Notes: 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Pin Assignment ( Top View ) FB LBI LBO REF 1 2 3 4 8 7 6 5 MSOP-8L OUT LX GND SHDN ( Top View ) FB LBI LBO CLSEL REF 1 2 3 4 5 10 9 8 7 6 OUT LX GND BATT SHDN MSOP-10L AP1601 Rev. 5 2 of 12 www.diodes.com SEPTEMBER 2009 © Diodes Incorporated AP1601 STEP-UP DC/DC CONVERTER Pin Descriptions Pin Name FB LBI LBO Description Use a resistor network to set the output voltage from +2.0V to +5.5V. If FB=VOUT, VOUT t=3.3V fix voltage FB=GND, VOUT =5V fix voltage Low-Battery Comparator Input. Internally set to trip at +1.30V. Open-Drain Low-Battery Comparator Output. Connect LBO to OUT through a 100kΩ resistor. Output is low when VLBI is 80% of VOUT) for operating mode. Drive low (