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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AS1343 데이터시트(PDF) 1 Page - ams AG |
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AS1343 데이터시트(HTML) 1 Page - ams AG |
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1 / 17 page  AS1343 42V, 1-2 Cells, Micropower, DC-DC Boost Converter www.austriamicrosystems.com Revision 1.04 1 - 17 Datasheet 1 General Description The AS1343 boost converter contains a 1.4A internal switch in a tiny TDFN-10 3x3mm package. The device operates from a 0.9V to 3.6V supply, and can boost volt- ages up to 42V output. The output voltage can easily be adjusted by an external resistor divider. The AS1343 uses a unique control scheme providing the highest efficiency over a wide range of load condi- tions. An internal 1.4A MOSFET reduces external com- ponent count, and a fixed high switching frequency (1MHz) allows for tiny surface-mount components. The AS1343 also features power-OK circuitry which monitors the output voltage. Additionally the AS1343 features a low quiescent supply current and a shutdown mode to save power. During shutdown an output disconnect switch separates the input from the output. The AS1343 is ideal for LCD or OLED panels with low current requirements and can also be used in a wide range of other applications. The device is available in a low-profile TDFN-10 3x3mm package. 2 Key Features ! 5.5V to 42V Adjustable Output Voltage ! 0.9V to 3.6V Supply Voltage Range ! High Output Currents: - 30mA @ 12V VOUT, from 1.5V VCC - 40mA @ 24V VOUT, from 2.5V VCC ! Efficiency: Up to 85% ! Switching Frequency: 1MHz ! Output Disconnect Function ! Output Discharge Function ! Power-OK Output ! Quiescent Current: 22µA ! Shutdown Current: 0.1µA ! TDFN-10 3x3mm Package 3 Applications The device is ideal for OLED display power supply, LCD bias generators, mobile/cordless phones, palmtop com- puters, PDAs and organizers, handy terminals, driving LEDs or any other portable, battery-powered device. L1 VCC = 0.9V to 3.6V R3 EN VCC FB POK LX On Off R2 R1 VOUT = 5.5V to 42V CIN COUT GND Figure 1. AS1343 - Typical Application Diagram VOUT AS1343 SWOUT PGND D1 |
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