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AS3668 Datasheet(PDF) 7 Page - ams AG |
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AS3668 Datasheet(HTML) 7 Page - ams AG |
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7 / 59 page  www.ams.com/AS3668 Revision 1.13 7 - 59 AS3668 Data Sheet - Electrical Characteristics 6 Electrical Characteristics VBAT = 3.6V, CBAT = CVCPOUT = 1μF, CFLY = 470nF, TAMB = -30ºC to +85ºC, typical values @ TAMB = +25ºC (unless otherwise specified) . Table 3. Electrical Characteristics Symbol Parameter Condition Min Typ Max Unit General Operating Conditions VBAT Supply Voltage 2.7 5.5 V IVBAT Standby supply current SCL = 0V and GPIO = 0V 0.2 3 μA Normal Mode supply current SCL = VBAT and SDA = VBAT, no I2C communication and no internal block enabled 10 μA Charge pump in 1x mode, no load, current source outputs disabled 70 μA Charge pump in 2x mode, no load, current source outputs disabled 2.5 mA fOSC Internal Oscillator Frequency Accuracy -10 +10 % TAMB Operating Temperature 1 -30 25 85 °C Charge Pump ROUT Charge Pump Output Resistance Operating Mode 1:1 2 Operating Mode 1:2; VBAT = 3.0V 20 fSW Switching Frequency 1 MHz tON VCP Turn-On Time 2 no load, current sources CURR1 - CURR4 deactivated 30 μs IOUT = 50mA, current sources CURR1 - CURR4 deactivated 40 μs Current Sources ILEAK Leakage Current (LED1 to CURR4) PWM = 0% 0.1 1 μA IMAX Maximum Source Current Outputs CURR1 to CURR4 25.5 mA IOUT Output Current Accuracy Output Current set to 25.5 mA -15 +15 % IMATCH Matching Accuracy Output Current set to 25.5 mA -10 +10 % fLED Switching Frequency PWM mode with internal oscillator 122 Hz Logic Interface Logic Input SCL, SDA and GPIO/AUDIO_IN VIL Input Low Level 0.52 V VIH Input High Level 1.38 VBAT V IIN Input Current -1.0 1.0 μA VOLGPIO Low Level Output voltage Pin GPIO/AUDIO_IN at 4mA 0.2 V VHYS Hysteresis 0.1 V fEXT External PWM input Only possible with GPIO/AUDIO_IN 1 MHz Analogue Input Analogue Audio Input GPI/AUDIO_IN VAUDIO Input Signal Level 2.5 VPEAK RAUDIO_IN Audio Input Resistance Audio Preamplifier Gain = -6dB 400 kΩ Audio Preamplifier Gain = +20dB 60 kΩ |
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