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AS3695C Datasheet(PDF) 5 Page - ams AG

No. de pieza AS3695C
Descripción Electrónicos  16 channel white LED controller for LCD backlight
PDF  40 Pages
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Fabricante Electrónico  AMSCO [ams AG]
Página de inicio  http://www.ams.com
Logo AMSCO - ams AG

AS3695C Datasheet(HTML) 5 Page - ams AG

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AS3695C
austriamicrosystems
www.austriamicrosystems.com
Rev 1.11 / 2010-12-08
4 - 39
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tj
Junction Temperature
-20
115
°C
3.2.2 Power supply
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDD
Supply Voltage
4.0
5.5
V
VDD_POR
Power on reset level
Circuit stays in power down until VDD_POR is
reached. G1-G16 are pulled down with 130k
2.4
2.9
V
IDD_q
Quiescent current
VDD= 5V, Default setting, PWM = 0
20
mA
IDD_r
Supply current
VDD = 5V, HSYNC = 1MHz, Duty = 50%
30
mA
V2_5
Voltage regulator output
2.5
V
3.2.3 Current outputs
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDX
Output voltage pins Dx
30
V
RDX
Input resistance in Dx
PWM = 0
PWM = 1
10
0.1
M
M
VGX
Max output voltage pin Gx
Igx = 1mA
VDD-
0.6
V
IGX
Max output current pin Gx
2
3
mA
IResx
Input current pin RESx
URESx = 0.5V
URESx = 0.8V
10
100
uA
Iled_250
Trimmed
Current accuracy
Trimmed during production
ILED =100mA, Temp = 25°C,
DACref=800mV, VDAC = 250mV
(1)
external NMOS-Transistor used,
(excluding error of external Rset)
-0.5
+0.5
%
Iled_all
FET
Current accuracy
External FET
Temp = 25°C, DACref=800mV,
VDAC = 200mV to 800mV
(2)
external NMOS-Transistor used,
(excluding error of external Rset)
-1.4
+1.4
%
Ich_250
Channel to channel
Current accuracy
ILED =100mA, Temp = 25°C,
DACref=800mV, VDAC = 250mV
(1)
external NMOS-Transistor used,
(excluding error of external Rset)
0.2
%
Iled_all_T
FET
Current accuracy
External FET
Tjunction = -20°C to +100°C,
DACref=800mV,
VDAC = 200mV to 800mV
(2)
external NMOS-Transistor used,
(excluding error of external Rset)
-1.5
+1.5
%
Iled_all_T
BJT
Current accuracy
External BJT (B=100)
Tjunction = -20°C to +100°C
DACref=800mV,
VDAC = 200mV to 800mV
(2)
external BJT-Transistor (B=100 ) used,
(excluding error of external Rset)
-1.5
+1.5
%
Note:
(1) It is recommended to use DACref = 800mV in order to achieve specified accuracy
(2) It is not recommended to use VDAC < 200mV in order to minimize influences from PCB- layout and
noise.



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