IC-NZ Datasheet, PDF (16/20 Pages) IC-Haus GmbH – FAIL-SAFE LASER DIODE DRIVER

iC-NZ
FAIL-SAFE LASER DIODE DRIVER
VDD
VDD
C1
RSI
RSI
EN
ENCAL
NERR
NSF
SMD
SDIS
REGEN
LENL LENM LENH
Current Monitor
LDAOK RSIOV
Finite State Machine
NSEN
CLDA
Laser Driver
NTREN
MDOK
CIOK
LDKGND
NSEN
Safety Monitor Diode
VSH
VSL
+
SMD(1)
−
+
SMD(0)
−
NPDR TEMPOK
VBG
and
Reference
VBG
and
Reference
Rev B2, Page 16/20
LDA
LDKH
LDKM
LDKL
CIH
CIM
CIL
MDL
RMDH
RMDM
LD MD
CIH
CIM
CIL
RMH
RGND
RMM
RML
VREF
Figure 13: Operation without a second monitor diode (N-type laser diode)
VDD
VDD
C1
RSI
RSI
EN
ENCAL
NERR
NSF
SMD
SDIS
REGEN
LENL LENM
LENH
Current Monitor
LDAOK
RSIOV
Finite State Machine
NSEN
CLDA
Laser Driver
NTREN
MDOK
CIOK
LDKGND
NSEN
Safety Monitor Diode
VSH
VSL
+
SMD(1)
−
+
SMD(0)
−
NPDR
TEMPOK
VBG
and
Reference
VBG
and
Reference
LDA
RVDD
RMH
RMM
RMDH
RMDM
MDL
RML
LDKH
LDKM
LDKL
CIH
CIM
CIL
LD MD
CIH
CIM
CIL
VREF
Figure 14: Operation without a second monitor diode (P-type laser diode)