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AS3661 Datasheet(PDF) 9 Page - ams AG

Part # AS3661
Description  Programmable 9-channel LED Dr iver
PDF  87 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3661 Datasheet(HTML) 9 Page - ams AG

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www.austriamicrosystems.com
Revision 1.3
8 - 85
AS3661
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
VBAT = 3.6V, VEN = 1.65V, CBAT = CVCPOUT = 1.0µF, CFLY1-2 = 0.47µF, TAMB = -30ºC to +85ºC, typical values @ TAMB =
+25ºC (unless otherwise specified)
1
.
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
EN = 0V or CHIP_EN=0 (bit), external 32 kHz
clock running or not running
1.4
4
µA
Normal Mode supply
current
External 32 kHz clock running, charge pump
and current source outputs disabled
0.16
0.22
mA
Charge pump in 1x mode, no load, current
source outputs disabled
0.16
0.22
mA
Charge pump in 1.5x mode, no load, current
source outputs disabled
1.4
mA
Power Save Mode
supply current
External 32 kHz clock running
3.1
5
µA
Internal oscillator running
0.16
0.23
mA
fOSC
Internal Oscillator
Frequency Accuracy
TAMB = +25ºC
-4
+4
%
-7
+7
TAMB
Operating
Temperature
1
-30
25
85
°C
Charge Pump
ROUT
Charge Pump Output
Resistance
Gain = 1.5 and VBAT = 2.9V
6
Ω
Gain = 1 and VBAT = 2.9V
1
Gain = 1.5 and VBAT = 3.6V
1.4
Gain = 1 and VBAT = 3.6V
1
fSW
Switching Frequency
1.2
1.25
1.3
MHz
IGND
Ground current
Gain = 1.5
1.2
mA
Gain = 1
1
µA
tON
VCP Turn-On Time
2
VBAT = 3.6V, IOUT = 60 mA
100
µs
ILOAD
Charge Pump load
current
Recommended charge pump load current
0
100
mA
LED Driver
ILEAK
Leakage Current
(LED1 to LED9)
PWM = 0%
0.1
1
µA
IMAX
Maximum Source
Current
Outputs LED1 to LED9
25.5
mA
IOUT
Output Current
3
Accuracy
Output Current set to 17.5
mA
TAMB = +25ºC
-2.5%
+2.5%
%
-5
+5
IMATCH
Matching
Output Current set to 17.5 mA
1
2.5
%
fLED
LED Switching
Frequency
312
Hz
VSAT
Saturation Voltage
4
Output Current set to 17.5 mA
45
100
mV
LED Test



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