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AS3668 Datasheet(PDF) 7 Page - ams AG

Part # AS3668
Description  4 Channel Breathlight Controller
PDF  59 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3668 Datasheet(HTML) 7 Page - ams AG

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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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