Datasheet

iC-NZN
N-TYPE LASER DIODE DRIVER
Rev C1, Page 5/17
ELECTRICAL CHARACTERISTICS
Operating Conditions: VDD = 3...5.5 V, VSY = 0 V...VDD, Tj = -20...125
◦
C, NSLP = hi, CID = lo; unless otherwise stated
Item Symbol Parameter Conditions Unit
No. Min. Typ. Max.
Total Device
001 VDD Permissible Supply Voltage 3 5.5 V
002 VSY Permissible Supply Voltage at
VSY
VSY ≤ VDD 3 5.5 V
003 Ioff(VDD) Supply Current in VDD NSLP = lo, all other input pins set to lo 5 50 µA
004 Idc(VDD) Supply Current in VDD RSI ≥ 680 Ω 10 15 mA
005 I(VSY) Supply Current in VSY SYN pin open 10 µA
006 Tab Thermal Shutdown Threshold 130 196
◦
C
007 VDDon Power-On Threshold 1.7 2.8 V
008 Vc()hi Clamp Voltage hi at RSI, TTL,
REGE, MD, CI, LDA, NSLP,
IMON
I() = 0.1 mA, other pins open, VDD = 0 0.3 1.5 V
009 Vc()hi Clamp Voltage hi to VSY at SYN I() = 1 mA, other pins open, VSY = 0 0.3 1.5 V
010 Vc()hi Clamp Voltage hi at LDK I() = 1mA, other pins open 12 V
011 Vc()lo Clamp Voltage lo at VDD, AVG,
MD, IMON, CID, EP, EN, TTL,
VSY, SYN, RGND, RVDD, LDK,
AGND, CI, LDA, RSI, REGE,
NSLP, NERR
I() = 1 mA, other pins open -1.5 -0.65 -0.3 V
012 Vc()hi Clamp Voltage hi at VSY, EP, EN I() = 1mA, other pins open, VDD = 0 6 V
Current Monitor RSI, LDA
101 V(RSI) Voltage at RSI 430 520 580 mV
102
RSI Permissable Resistor at RSI
VDD = 3...3.5 V 2.5 9 kΩ
VDD = 4.5...5.5 V 0.68 9 kΩ
105 Cmin(LDA) Minimum capacitor needed at
LDA
100 nF
106
rILDA Current Ratio I(LDA)max / I(RSI)
V(LDA) = 0 V
VDD = 4.5...5.5 V 540
VDD = 3...3.5 V 520
107
rILDK Current Ratio I(LDK)max / I(RSI)
V(LDK) = V(REGE) = V(TTL) = V(EP) = VDD,
V(MD) = 0 V
VDD = 4.5...5.5 V 700
VDD = 3...3.5 V 650
108 i(ldk) Maximum limited current RSI = 0.68 kΩ VDD = 5.5V 630 mA
109 Rdis(LDA) Discharge Resistor at LDA NSLP = lo, V(LDA) = VDD 1 20 kΩ
Reference
201 V(MD) V(MD) − V(RGND),
V(RVDD) − V(MD) for P-type LD
or ACC
closed control loop 460 510 560 mV
202 dV(MD) Temperature Drift of Voltage at
MD
closed control loop 120 µV/
◦
C
203 V(MD) V(MD) − V(RGND) V(EP) = 0 V, V(AVG) = 0 V, N-type LD 460 510 560 mV
Digital Inputs/Outputs
301 Vin() Input Voltage Range at EP, EN TTL = lo, VDD = 3.0...5.5V 0.6 VDD −
1.4
V
302 Vd() Input Differential Voltage at EP,
EN
TTL = lo, Vd() = |V(EP) − V(EN)| 200 mV
303
R() Differential Input Impedance at
EP, EN
TTL = lo 0.6 3 kΩ
V(EP), V(EN) < VDD − 1.5V
304 Vt(EP)hi Input Threshold Voltage hi at EP TTL = hi, EN = open 2 V
305 Vt(EP)lo Input Threshold Voltage lo at EP TTL = hi, EN = open 0.8 V
306 Vhys(EP) Hysteresis at EP TTL = hi, EN = open 40 mV
307 Ipd(EP) Pull-Down Current at EP TTL = hi, EN = open, V() = 1 V...VDD 0.5 5 µA
308 Vt()hi Input Threshold Voltage hi at
TTL, REGE, NSLP, AVG, CID
2 V