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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC628AEVB датащи(PDF) 1 Page - Semtech Corporation |
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SC628AEVB датащи(HTML) 1 Page - Semtech Corporation |
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1 / 21 page  POWER MANAGEMENT 1 SC628A LED Flash Driver Charge Pump with 1000mA Flash Mode, 275mA Spotlight Mode, and I2C Interface Features Input supply voltage range — 3.0V to 5.5V Charge pump modes — 1x, 1.5x and 2x Flash LED — 1000mA max in flash mode, 275mA max continuous for spotlight Charge pump frequency — 250kHz I2C compatible interface — up to 400kHz External flash control pin to sync with camera One second flash time out with disable feature Automatic sleep mode (flash off ) — I Q = 100μA Low shutdown current — 0.1μA (typical) Ultra-thin package — 3mm x 3mm x 0.6mm Fully WEEE and RoHS compliant Applications Cellular phone flash PDA flash Description The SC628A is a high efficiency charge pump LED driver using Semtech’s proprietary charge pump technology. Performance is optimized for use in single-cell Li-ion battery applications. The load and supply conditions determine whether the charge pump operates in 1x, 1.5x, or 2x mode. The charge pump provides continuous spotlight mode current or pulsed flash mode current to an LED using a dedicated current sink. In flash mode, a flash-timeout feature turns off the flash if active for longer than 1 second. In spotlight mode, the timeout feature is disabled to allow continuous operation of the LED. The SC628A uses an I2C compatible serial interface to set the flash mode or the spotlight mode current. The flash/ spotlight output is triggered via either the I2C interface or a dedicated flash enable pin (FLEN). In sleep mode, the device reduces quiescent current to 100μA while continuing to monitor the serial interface. Total current reduces to 0.1μA in shutdown. SC628A IN SDA FLEN AGND PGND OUT FL CIN 4.7μF 1 C+ C1- C2+ C2- I2C Data Flash Control Enable Control I2C Clock SCL EN VBAT = 3.0V to 5.5V C1 2.2μF C2 2.2μF COUT 4.7μF FLASH US Patents: 6,504,422; 6,794,926 Typical Application Circuit July 14, 2009 |
Аналогичный номер детали - SC628AEVB |
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Аналогичное описание - SC628AEVB |
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