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ILC6390 数据表(PDF) 1 Page - Impala Linear Corporation |
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ILC6390 数据表(HTML) 1 Page - Impala Linear Corporation |
1 / 9 page V OUT V DD V REF 4~5mV + + - - 2-STEP PFM CONTROLLED OSC 100/155kHz V LX LIMITER BUFFER V SS L X EXT CE CHIP ENABLE 50 mA boost converter using Pulse Frequency Modulation, or PFM, technique, in 5-lead SOT-89 or a 5-lead SOT-23 package. Only 3 external components are needed to com- plete the switcher design. The ILC6390 automatically senses load variations to choose between 55% and 75% duty cycles. Normal operation is 55% duty at 155kHz; when load currents exceed the internal com- parator trip point, a “turbo mode” kicks in to provide extend- ed on-time switching (75% duty at 100kHz oscillation). Requiring only 30µA of supply current, the ILC6390 achieves efficiencies as high as 85% at 5V yet shuts down to 0.5µA max. Standard voltages offered are 2.5, 3.3, and 5.0V and is available in both a 5 lead SOT-23 and 5 lead SOT-89 pack- age for small footprint applications. In addition, the ILC6391 is configured to drive an external transistor to achieve higher power levels. ILC6390/91 SOT-89 Step-Up PFM Switcher with Auto-Load Sense Impala Linear Corporation Impala Linear Corporation 1 (408) 574-3939 www.impalalinear.com Feb 2001 ILC6390 1.1 • 85% conversion efficiency at 50mA out • Start-up voltages as low as 900mV • ±2.5% accurate outputs • Complete switch design with only 3 external components • Automatically senses load variations to select the optimal duty cycle and extend conversion efficiencyover a wide range • External transistor configuration to run as switcher controller • Shutdown to 0.5µA • Cellular phones, pagers • Cameras, video recorders • Palmtops and PDAs ILC6390CM ILC6390CP 54 123 SOT-25 (TOP VIEW) L X V SS CE V DD N/C V SS L X SOT-89-5 (TOP VIEW) 54 12 3 N/C V OUT CE ILC6391CM 54 12 3 SOT-25 (TOP VIEW) L X V SS CE V DD N/C ILC6391CP V SS L X SOT-89-5 (TOP VIEW) 54 12 3 N/C V OUT CE Block Diagram Pin-Package Configurations ILC6390CM-25 2.5V ± 2.5% ILC6390CM-33 3.3V ± 2.5% ILC6390CM-50 5.0V ± 2.5% ILC6391CM-25 3.3V ± 2.5% driving external transistor ILC6391CM-33 3.3V ± 2.5% driving external transistor ILC6391CM-50 5.0V ± 2.5% driving external transistor ILC6390CP-25 2.5V ± 2.5% ILC6390CP-33 3.3V ± 2.5% ILC6390CP-50 5.0V ± 2.5% ILC6391CP-25 3.3V ± 2.5% driving external transistor ILC6391CP-33 3.3V ± 2.5% driving external transistor ILC6391CP-50 5.0V ± 2.5% driving external transistor * Standard product offering comes in tape & reel, quantity 3000 per reel, orientation right for SOT-25, quantity 1000 per reel orientation right for SOT-89. General Description Features Applications Ordering Information |
类似零件编号 - ILC6390 |
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类似说明 - ILC6390 |
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