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PAM2810LED3A Datenblatt(PDF) 1 Page - Power Analog Micoelectronics |
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PAM2810LED3A Datenblatt(HTML) 1 Page - Power Analog Micoelectronics |
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1 / 10 page ![]() Typical Application Circuit , Power Analog Microelectronics Inc Features Applications n n n White LED for LCD Display Backlights White LED Keypad Backlights 1-Cell Li-Ion Battery-operated Equipment Including PDAs, Hand-held PCs, Cellular Phone Description The PAM2810 provides 4 regulated current sinks, capable of sinking up to 40mA current to accommodate 4 white LEDs. It requires no charge pump, has no noise and EMI, and significantly improves the efficiency in Li bettery range. LED brightness can be controlled by PWM techniques. The constant current sink is set with an external sense resistor. Alternatively, a PWM signal applied to the EN pin can vary the anticipated brightness of the LED. The device is in shut down mode when the EN input is logic low. The is available in SOT23-8 and PAM2810 n n n n n n n n Cost Effective LED Driver Support up to 4 White LEDs Output Current up to 40mA per LED Low Dropout Voltage Ultra Low Quiescent Supply Current: 65 A (typ) No Noise and EMI Shutdown Current Less than 1 A Over Temperature Protection Small Packages : SOT23-8 and DFN 2mmx2mm Pb-free Package DFN mmX2mm Packages. μ μ n n 2 1 www.poweranalog.com PAM2810 4-Channel Programmable LED Current Sink 08/2008 Rev 1.1 PAM2810 LED1 8 LED2 7 LED3 6 LED4 5 GND 3 ISET 1 EN 2 VIN 4 C1 0.1μF R1 6.2k VIN |
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