IC-NZ Datasheet, PDF (6/20 Pages) IC-Haus GmbH – FAIL-SAFE LASER DIODE DRIVER

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 Symbol Parameter
No.
Conditions
407 C(CIx)
Capacitance at CIx
408 |I(CIx)| Charge Current from CIx
iC active, control unit not yet settled
409 I(CIx)
Discharge Current in CIx
iC inactive, V(CIx) > 1 V
410 Ipd(CIx) Pull-Down Current in CIx
iC active, REGEN = lo
411 I(RMDx) Permissible
Laser Monitor Diode Current
active safety function;
VDD = 5 V
VDD = 3.3 V
Status Outputs
501 I(NERR) Current at Error Message
V(LDA) = V(VDD) = V(NERR), error state
502 I(NERR) Current in NERR
V(LDA) = V(VDD) = V(NERR),
no error state, V(MDL) < 0.5 V
503 I(NSF) Current at NSF Message
V(LDA) = V(VDD) = V(NSF), V(NSF) > 0.8 V
504 I(SDIS) Current at SDIS Message
V(LDA) = V(VDD) = V(SDIS), V(SDIS) > 0.8 V
505 Vsat()
Saturation Voltage at NERR,
NSF, SDIS
Isat = 1 mA, NERR in error state
Current Monitor RSI, LDA
601 V(RSI) Controlled Voltage at RSI
EN = hi
602 RSI
Resistor at RSI
603 VLDA
LDAOK Monitor Threshold
VDD – V(LDA)
604 Idc(LDA) Current from LDA
DC
605 Rpd(LDA) Pull-Down Resistor at LDA
Reset
606 td(SDIS) Overcurrent Shutdown Delay I(LDA) > I(RSI) * 500
607 rILDA
Current Ratio I(LDA)max / I(RSI) 780 Ω < RSI < 9000 Ω
608 Ipd(RSI) Pull-Down Current in RSI
V(RSI) > 0.5 V
Timing
701 ten
Propagation Time: EN lo → hi no error at self test, CLDA = 1 µF
system enable
702 tr
Laser Current Rise Time
see Fig. 2
703 tf
Laser Current Fall Time
see Fig. 2
704 tplh
Propagation Time:
see Fig. 3
LENx lo → hi to Current lo → hi
705 tphl
Propagation Time:
see Fig. 3
LENx hi → lo to Current hi → lo
706 ts0
Propagation Time:
see Fig. 4
V(SMD) > VSL to SMD(0) lo → hi Tj = 27 °C
Tj = 85 °C
707 ts0_off
Propagation Time:
V(SMD) < VSL to SMD(0) hi → lo
708 ts1
Propagation Time:
see Fig. 4
V(SMD) > VSH to SMD(1) lo → hi
709 toff
Propagation Time:
see Fig. 4
SMD(1) lo → hi until shutdown
710 td
Propagation Time:
SMD(1) lo → hi until error
message
see Fig. 4
Unit
Min. Typ. Max.
100
nF
0.25 0.6
1
mA
10
60
mA
25
150 nA
2.5 mA
1
mA
1.5
10
mA
0.1
1
mA
1.5
10
mA
1.0
10
mA
600 mV
430 490 560 mV
0.78
9
kΩ
440 490 550 mV
320 mA
1
kΩ
10
µs
400 500 650
1
10
µA
300
µs
1.5
ns
1.5
ns
10
ns
10
ns
220
ns
240
ns
220
ns
220
ns
10
ns
500
ns