PAM2810 Datasheet | Power Analog Micoelectronics

4-Channel Programmable LED Current Sink PAM2810 Features n n n n n Description The PAM2810 provides 4 regulated current sinks, capable of sinking up to 40mA current to acmodate 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 PAM2810 is available in SOT23-8 and DFN 2 mmX2mm Packages. 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 μ A (typ) No Noise and EMI Shutdown Current Less than 1 μ A Over Temperature Protection Small Packages : SOT23-8 and DFN 2mmx2mm Pb-free Package Applications n White LED for LCD Display Backlights n White LED Keypad Backlights n 1-Cell Li-Ion Battery-operated Equipment Including PDAs, Hand-held PCs, Cellular Phone Typical Application Circuit VIN C1 0.1μF 4 VIN 2 EN .. LED1 8 1 LED2 7 PAM2810 LED3 6 LED4 5 GND 3 ISET R1 6.2 k Power Analog Microelectronics , Inc .poweranalog. 08/2008 Rev 1.1 1 4-Channel Programmable LED Current Sink PAM2810 Typical Application Circuit V BAT VIN C1 0.1μF 4 VIN 2 LED1 EN PAM2810 1 ISET LED4 GND R1 6.2kΩ 3 R1 6.2k Ω VIN C1 0.1μF 4 VIN 2 LED1 EN PAM2810 1 ISET LED4 GND 3 LED2 LED3 8 7 6 5 8 7 6 5 NC LED2 LED3 Block Diagram VIN .. VIN C IN 0.1 μ F...