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KB3436 Datasheet(PDF) 1 Page - Kingbor Technology Co |
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KB3436 Datasheet(HTML) 1 Page - Kingbor Technology Co |
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1 / 11 page  1 600mA, 650kHz Micropower Synchronous Boost Converter with Output Disconnect Figure 1. 2-Cell to 3.3V Synchronous Boost Converter SW 4.7 µH VOUT KB3436 FB VIN SHDN 460K 200K 4.7 µF 4.7 µF 2-CELL AA + VOUT 3.3V 250mA GND OFF ON 2-Cell to 3.3V Efficiency OUTPUT CURRENT (mA) 60 80 100 50 70 90 0.1 10 100 1000 40 1 VIN = 3V VIN = 3V VIN = 2.4V VIN = 2.4V 0.01 1 100 0.001 0.1 10 0.0001 EFFICIENCY POWER LOSS converter delivering high efficiency in a SOT23-6 package. The device has an internal NMOS switch and PMOS synchronous rectifier and has the capacity of supplying 3.3V at 100mA from a single AA cell input. High frequency switching (up to 2MHz) minimizes the board area by allowing the use of tiny, low profile inductors and ceramic capacitors. The KB3436 provides automatic pulse skipping at light loads, thus reducing the supply current for extended battery life. At shutdown, the KB3436 fully discharges the output to ground and draws no supply current. The KB3436 is available in small SOT23-6 package with both fixed and adjustable output voltage versions. Up to 96% efficiency Low start-up voltage 0.8V Internal synchronous rectifier Up to 2MHz switching allows for tiny external components 0.5V to 4.4V input range 2.5V to 5.0V output range (Note 3) Logic controlled shutdown (<1µA) Low 250µA operating supply current (measured at VOUT) Pulse skipping at light load for extended battery life Generates 3.3V at 100mA from single AA cell Stable with ceramic output capacitor Low profile 6-Leads SOT23-6 package PDAs and organizers Digital cameras Wireless mice/ keyboards Portable medical equipment Cordless phones Wireless Headsets Feedback Voltage: 1.00V +/-2% KB3436 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 APPLICATIONS FEATURES DESCRIPTION TYPICAL APPLICATION |
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