iC-NZ
FAIL-SAFE LASER DIODE DRIVER
Rev B2, Page 6/20
ELECTRICAL CHARACTERISTICS
Operating Conditions: VDD = 3.5...5.5 V, Tj = -20...85 °C; x: L, M, H, unless otherwise stated
Item
No.
407
408
409
410
411
Symbol
C(CIx)
|I(CIx)|
I(CIx)
Ipd(CIx)
I(RMDx)
Parameter
Capacitance at CIx
Charge Current from CIx
Discharge Current in CIx
Pull-Down Current in CIx
Permissible
Laser Monitor Diode Current
iC active, control unit not yet settled
iC inactive, V(CIx) > 1 V
iC active, REGEN = lo
active safety function;
VDD = 5 V
VDD = 3.3 V
V(LDA) = V(VDD) = V(NERR), error state
V(LDA) = V(VDD) = V(NERR),
no error state, V(MDL) < 0.5 V
V(LDA) = V(VDD) = V(NSF), V(NSF) > 0.8 V
V(LDA) = V(VDD) = V(SDIS), V(SDIS) > 0.8 V
Isat = 1 mA, NERR in error state
1.5
0.1
1.5
1.0
Conditions
Min.
100
0.25
10
25
0.6
1
60
150
2.5
1
10
1
10
10
600
Typ.
Max.
nF
mA
mA
nA
mA
mA
mA
mA
mA
mA
mV
Unit
Status Outputs
501
502
503
504
505
I(NERR)
I(NERR)
I(NSF)
I(SDIS)
Vsat()
Current at Error Message
Current in NERR
Current at NSF Message
Current at SDIS Message
Saturation Voltage at NERR,
NSF, SDIS
Controlled Voltage at RSI
Resistor at RSI
LDAOK Monitor Threshold
VDD – V(LDA)
Current from LDA
Pull-Down Resistor at LDA
Overcurrent Shutdown Delay
Current Ratio I(LDA)max / I(RSI)
Pull-Down Current in RSI
Propagation Time: EN lo
→
hi
system enable
Laser Current Rise Time
Laser Current Fall Time
Propagation Time:
LENx lo
→
hi to Current lo
→
hi
Propagation Time:
LENx hi
→
lo to Current hi
→
lo
DC
Reset
I(LDA) > I(RSI) * 500
780
Ω
< RSI < 9000
Ω
V(RSI) > 0.5 V
no error at self test, CLDA = 1 µF
see Fig. 2
see Fig. 2
see Fig. 3
see Fig. 3
400
1
500
Current Monitor RSI, LDA
601
602
603
604
605
606
607
608
701
702
703
704
705
706
V(RSI)
RSI
VLDA
Idc(LDA)
Rpd(LDA)
td(SDIS)
rILDA
Ipd(RSI)
ten
tr
tf
tplh
tphl
ts0
EN = hi
430
0.78
440
490
490
560
9
550
320
1
10
650
10
300
1.5
1.5
10
10
µA
µs
ns
ns
ns
ns
mV
kΩ
mV
mA
kΩ
µs
Timing
Propagation Time:
see Fig. 4
V(SMD) > VSL to SMD(0) lo
→
hi Tj = 27 °C
Tj = 85 °C
Propagation Time:
V(SMD) < VSL to SMD(0) hi
→
lo
Propagation Time:
see Fig. 4
V(SMD) > VSH to SMD(1) lo
→
hi
Propagation Time:
SMD(1) lo
→
hi until shutdown
Propagation Time:
SMD(1) lo
→
hi until error
message
see Fig. 4
see Fig. 4
220
240
220
220
10
500
ns
ns
ns
ns
ns
ns
707
708
709
710
ts0
off
ts1
toff
td
ICHAUS [ IC-HAUS GMBH ]
