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AS3693B Arkusz danych(PDF) 6 Page - ams AG

Numer części AS3693B
Szczegółowy opis  16 Channel high precision LED driver for LCD Backlight
PDF  33 Pages
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Producent  AMSCO [ams AG]
Strona internetowa  http://www.ams.com
Logo AMSCO - ams AG

AS3693B Arkusz danych(HTML) 6 Page - ams AG

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AS3693B
austriami crosyst ems
www.austriamicrosystems.com
Revision 1.21 / 2011-09-30
5 - 32
5.2 Operating Conditions
Test circuit
Vcurr
V2_5
2.2uF
2.2uF
Vreg
GND
FBB
Vreg
SDI
V2_5
AGND
AS3693B
SCLK
xCS
SDO
Fault
Hsync
Vsync
ADDR1
ADDR2
( Exposed Pad )
Ref(EXT)
FBG
FBR
Curr1
Rfb1
Gate1
Curr2
Rfb2
Gate2
Curr15
Rfb15
Gate15
Curr16
Rfb16
Gate16
Table 2 – Operating Conditions
Symbol
Parameter
Min
Typ
Max
Unit
Note
VDD
Main Supply
Not
Limited
V
Supply is not directly connected to
the AS3693B – see section ‘Shunt
Regulator’
VDDTOL Main Supply Voltage Tolerance
-20
+20
%
Applies only for supply VREG is
connected via Rvdd
VREGINT
Supply (shunt regulated by
AS3693B)
5.0
5.2
5.4
V
If internally (shunt-)regulated by
ZD1
VREGEXT
3
4.5
4.9
V
If externally supplied
VUVL
Untervoltage lockout voltage
2.4
2.7
3
V
If Vreg < UVUL current sources
are turned off
( Addr 0x01,Addr 0x02 = 0x00 )
IVREG
Supply Current (Chip current
consumption)
20
mA
Excluding current through shunt
regulator (ZD1) – see section
‘Shunt Regulator’. Note: Take care
of the Power dissipation of the
external Resistor.
IVREG_M
AX
Maximum Supply current
30
mA
Maximum Current Into VREG –
PIN (Supply current + shunt
regulator current).
IVREG
EXT_OFF
350
uA
Condition: externally supplied
Curr_reg1-16 off (register 01h =
00h, register 02h = 00h)
Igate
Gate driving capability
0.5
1
2
mA
Gate1 – Gate16 output current



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