prel

imin

ary

prel

imin

ary

iC-NZP

P-TYPE LASER DIODE DRIVER

Rev A1, Page 4/13

ELECTRICAL CHARACTERISTICS

Operating Conditions: VDD = 3...5.5 V, VSY = 0 V...VDD, Tj = -20...85 °C, NSLP = hi, NCID = hi; 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

Toff

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, VDDA,

VDDL, NSLP, IMON, NCID, AVG

I() = 0.1 mA, other pins open, VDD = 0

0.3

1.5

V

009

Vc(SYN)hi Clamp Voltage hi to VSY

I() = 1 mA, other pins open, VSY = 0

0.3

1.5

V

010

Vc()lo

Clamp Voltage lo at VDD, AVG,

MD, IMON, NCID, EP, EN, TTL,

VSY, SYN, RVDD, VDDL, VDDA,

CI, LDA, RSI, REGE, NSLP,

NERR

I() = 1 mA, other pins open

-1.5

-0.65

-0.3

V

011

Vc(VSY)hi Clamp Voltage hi at VSY

I() = 1 mA, other pins open, VDD = 0

6

V

Current Monitor RSI, LDA

101

V(RSI)

Voltage at RSI

420

500

580

mV

102

RSI

Permissible Resistor at RSI

VDD = 3...3.5 V

2.5

9

kΩ

VDD = 4.5...5.5 V

0.68

9

kΩ

103

V(VDDA)

VDDA Voltage Monitor Threshold VDD − V(VDDA), V(RSI) = VDD

400

500

620

mV

104

Ierr(VDDA) Maximum current from VDDA

without error signalling

V(RSI) = VDD;

VDD = 4.5...5.5 V

400

980

mA

VDD = 3...3.5 V

270

820

mA

105

Cmin()

Minimum capacitor required at

VDDA

100

nF

106

rIVDDA

Current Ratio

I(VDDA)max / I(RSI)

V(VDDA) = 0 V;

VDD = 3...5.5 V

460

630

107

rILDA

Current Ratio I(LDA)max / I(RSI)

V(REGE) = V(TTL) = V(EP) = VDD,

V(LDA) = 0 V, V(MD) = 0;

VDD = 3...5.5 V

530

940

108

i(LDA)

Maximum limited current

RSI = 680 Ω, VDD = 5.5 V

630

mA

109

Rdis()

Discharge Resistor at VDDA

NSLP = lo, V(VDDA) = VDD

1

20

kΩ

Reference

201

V(MD)

Reference Voltage

V(MD) − V(RGND),

V(RVDD) − V(MD) for P-type LD,

closed control loop

210

250

310

mV

202

dV(MD)

Temperature Drift of Voltage at

MD

closed control loop

120

µV/°C

203

V(MD)

Precharge Reference Voltage

V(RVDD) − V(MD);

V(EP) = 0, V(AVG) = 0, P-type MD

230

280

360

mV

Digital Inputs/Outputs

301

Vin()

Input Voltage Range at EP, EN

TTL = lo, VDD = 3.0...5.5 V

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

V(EP), V(EN) < VDD − 1.5 V, TTL = lo

0.6

3

kΩ

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