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LR9908 Datasheet(PDF) 1 Page - Leshan Radio Company |
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LR9908 Datasheet(HTML) 1 Page - Leshan Radio Company |
1 / 8 page TINY PACKAGE HIGH EFFICIENCY STEP-UP DC/DC CONVERTER Introduction The LR9908 is a CMOS step-up switching DC/DC converter that mainly consists of a reference voltage source, an oscillator, and a comparator. The LR9908 allows the duty ratio to be automatically switched according to the load (light load: 66%, high output current: 78%), enabling products with a low ripple over a wide range, high efficiency, and high output current. With the LR9908, a step-up switching DC/DC converter can be configured by using an external coil, capacitor, diode and NMOS. This feature, along with the mini package and low current consumption, makes the LR9908 ideal for applications such as the power supply unit of portable equipment. Applications • PDA • DSC • LCD Panel • RF-Tags • MP3 • Portable Instrument • Wireless Equipment Features • Low voltage operation: Oscillation start voltage at 0.8V • Duty ratio: 66/78%, built-in auto switching • External parts: Coil, capacitor, diode, NMOS • High efficiency:±85%(typ.) • Output voltage Adjustable • Providing Flexibility for Using External Power Switches • Zero Shutdown Mode Supply Current • 6µA Quiescent (Switch-off) Supply Current • Small SOT23-5,SOT89-5 Package Ordering Information LR9908 LR9908 LESHAN RADIO COMPANY, LTD. 1/8 |
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