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SS6638-27GXTR 数据表(PDF) 1 Page - Silicon Standard Corp. |
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SS6638-27GXTR 数据表(HTML) 1 Page - Silicon Standard Corp. |
1 / 19 page www.SiliconStandard.com 1 of 19 SS6638G 8/21/2005 Rev.2.3 Simple 3-Pin Step-Up DC/DC Converter FEATURES DESCRIPTION Guaranteed start-up from less than 0.9 V. High efficiency. Low quiescent current. Fewer external components needed. Low ripple and low noise. Fixed output voltage: 2.7V, 3.0V, 3.3V, 4.5V and 5V. Space saving packages: SOT-23, SOT-89 and TO-92. APPLICATIONS Pagers. Cameras. Wireless Microphones. Pocket Organizers. Battery Backup Supplies. Portable Instruments. The SS6638G 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 2.7V, 3.0V, 3.3V, 4.5V or 5V. The SS6638G starts up from less than 0.9V input with 1mA load. A 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 circuits operating in PSM mode. The PFM control circuit operating at a maximum 100kHz switching rate results in smaller passive components. The space saving SOT-23, SOT-89 and TO-92 packages make the SS6638G an ideal choice of DC/DC converter for space-conscious applications, like pagers, electronic cameras, and wireless microphones. TYPICAL APPLICATION CIRCUIT D1 SS12 VOUT SW GND SS6638-27G SS6638-30G SS6638-33G SS6638-45G SS6638-50G C2 47 µF + VOUT L1 100 µH VIN + C1 22 µF Simple Step-Up DC/DC Converter Pb-free, RoHS compliant. |
类似零件编号 - SS6638-27GXTR |
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类似说明 - SS6638-27GXTR |
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