AS3693B
Table 11 –CURREG_CONTROL
Addr: 0dh
austria micro systems
Curreg Control
Controls Rise, Fall times and References of the Curreg.
Bit
Bit Name
Default
Access
Description
Voltage reference for the current regulators can be
chosen with these options.
1:0
Analog Ref Select
00
R/W
00 = 250mV reference
01 = external reference
10 = DAC reference
11 = do not use
SLEW – RATE – Control. Adjusts the rise and fall time of
the current switching
3:2
SLEW_RATE_CONT
ROL
00
R/W
00 = typ. 9us
01 = typ. 6us
10 = typ. 3us
11 = typ. 1us
5:4
7
PWM_LOW_LEVEL
boost mode
00
0
R/W
R/W
Note: Test bits for internal use only
Gives +30% current.
only available in internal reference mode.
AS3693B
Reference Sources
0,5% VREF 250mV
Analog Ref Select
2
3-16
1
PWM
8Bit DAC
0...500mV
External Reference
Table 12 – Ref_DAC_Voltage
Addr: 0eh
Curreg
Ref_DAC_Voltage
The Regulation Voltage can be chosen in this register
Bit
Bit Name
Default
Access
Description
Reference voltage for current regulators. (Note: If Analog
Ref Select = 10, the regulation voltage can be adjusted
here.
00000000 = 0mV
7…0
Ref_DAC_Voltage
00
R/W
00000001
01111111 = 250 mV
..
11111111= 500mV
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Revision 1.21 / 2011-09-30
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