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SS6642-27GXTR Datasheet(PDF) 1 Page - Silicon Standard Corp. |
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SS6642-27GXTR Datasheet(HTML) 1 Page - Silicon Standard Corp. |
1 / 22 page www.SiliconStandard.com 1 of 22 SS6642G 1/15/2005 Rev.2.10 3-Pin Simple Step-Up DC/DC Converter FEATURES DESCRIPTION A 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, 3.7V, 4.5V and 5V. Space-saving packages: SOT-23, SOT-89 and TO-92. APPLICATIONS Pagers. Cameras. Wireless Microphones. Pocket Organizers. Battery Backup Suppliers. Portable Instruments. The SS6642G is a high efficiency step-up DC/DC converter for applications using 1 to 4 NiMH bat- tery cells. Only three external components are re- quired to deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, 3.7V, 4.5V or 5V. The SS6642G starts up from less than 0.9V input with 1mA load. A Pulse Frequency Modulation scheme optimizes performance for applications with light output loading and low input voltages. The output ripple and noise are lower when compared with circuits operating in PSM mode. The PFM control circuit operating at a 100KHz (max.) switching rate results in smaller passive components. The space saving SOT-23, SOT- 89 and TO-92 packages make the SS6642G an ideal choice for DC/DC converter for space con- scious applications, such as pagers, electronic cameras, and wireless microphones. TYPICAL APPLICATION CIRCUIT D1 SS12 VOUT SW GND SS6642-xxG C2 47 µF + VOUT L1 100 µH VIN + C1 22 µF One Cell Step-Up DC/DC Converter Pb-free, RoHS compliant. |
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