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AS3695C 数据表(PDF) 6 Page - ams AG

部件名 AS3695C
功能描述  16 channel white LED controller for LCD backlight
PDF  40 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS3695C 数据表(HTML) 6 Page - ams AG

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AS3695C
austriamicrosystems
www.austriamicrosystems.com
Rev 1.11 / 2010-12-08
5 - 39
3.2.4 Feedback circuit, fault detectors
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
IFBmax
Feedback current
maximum
200
uA
RFBmin
Minim output resistance
VDx = 0.2V
200
800
IFB_g
FB transconductance
IFB_g = ∆IFB/ ∆VDx
-2
mA/V
VFB
Feedback voltage trip
point
Programmable
Tolerance ±10%
0.6
0.8
1.0
VDAC
+0.35
V
Vshort
Short LED detection
voltage at Pin Dx
Programmable
Tolerance ±1.2V
2
3
4
5
6
7
8
9
10
11
12
V
V
V
V
V
V
V
V
V
V
V
Vopen
Open LED detection
Voltage at Pin Sx
Programmable
Tolerance ±10%
50
100
200
VDAC
/2
mV
mV
mV
V
Tovtemp
Over temperature limit
130
140
150
°C
Thyst
Over termperature
hysteresis
10
°C
3.2.5 PWM-generators
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC
Internal Clock for PWM
400
500
600
kHz
fHSYNC
HSYNC frequency
100
2000
kHz
fVSYNC
VSYNC frequency
60
480
Hz
fPLL
PLL frequency
125
2000
kHz
3.2.6 Digital pins
Symbol
Parameter
Min
Typ
Max
Unit
Note
VIH
High Level Input voltage
1.3
VDD
V
VIL
Low Level Input voltage
-0.3
0.8
V
VoH
High Level output voltage
VDD-
0.3
V
I=mA
VoL
Low Level output voltage
VDD-
0.3
V
I=mA
VoL_PD
Low level output voltage open
drain outputs
VDD-
0.3
V
I=mA
R_pu
Input resistance PullUp inputs
300
k



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