iC-NZ

FAIL-SAFE LASER DIODE DRIVER

Rev B2, Page 5/20

ELECTRICAL CHARACTERISTICS

Operating Conditions: VDD = 3.5...5.5 V, Tj = -20...85 °C; x: L, M, H, unless otherwise stated

Item

Symbol

Parameter

Conditions

Unit

No.

Min.

Typ.

Max.

Total Device

001

VDD

Permissible Supply Voltage

3.5

5.5

V

002

Ioff(VDD)

Supply Current in VDD

EN = lo

460

600

µA

003

Idc(VDD)

Supply Current in VDD

EN = hi, RSI > 780 Ω

6.4

10

mA

004

Tab

Thermal Shutdown Threshold

110

150

°C

005

VDDen

Power-On Threshold

2.1

2.95

V

006

Vc()hi

Clamp Voltage hi at REGEN,

LENH, LENM, LENL, EN,

ENCAL, LDA, NERR, NSF

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

0.3

1.5

V

007

Vc()hi

Clamp Voltage hi at CIx, MDL,

RMDH, RMDM SMD

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

0.3

1.6

V

008

Vc()hi

Clamp Voltage hi at LDKx

I() = 1 mA, other pins open

12

V

009

Vc()hi

Clamp Voltage hi at RSI, VREF

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

0.3

0.9

1.5

V

010

Vc()hi

Clamp Voltage hi at SDIS

I() = 1 mA, other pins open

6

V

011

Vc()lo

Clamp Voltage lo

I() = 1 mA, other pins open

-1.5

-0.65

-0.3

V

Reference

101

V(MDL)

Voltage at MDL,

VDD − V(MDL) for P-type LD

closed control loop

440

500

550

mV

102

dV(MDL)

Temperature Drift of Voltage at

MDL

closed control loop

120

µV/°C

103

I()

Current in MDL, RMDM, RMDH

LENL, LENM, LENH = hi

-500

500

nA

104

V(VREF)

Voltage at VREF,

VDD − VREF for P-type LD

iC active

405

480

550

mV

Digital Inputs

201

Ipd()

Pull-Down Current in LENx, EN

V(LDA) = V(VDD)

1

4

10

µA

202

Ipd

(REGEN)

Pull-Down Current in REGEN

V(LDA) = V(VDD), V(ENCAL) < Vt()

1

4

10

µA

203

Vt()

Threshold Voltage at LENx,

REGEN, ENCAL, EN

VDD = 5 V

0.75

1.8

2.2

V

204

Vhys()

Hysteresis

800

mV

205

Rpd

(REGEN)

Pull-Down Resistor at REGEN

V(ENCAL) > Vt()

4

20

kΩ

206

Rpd

(ENCAL)

Pull-Down Resistor at ENCAL

10

30

kΩ

Safety Monitor Diode

301

VSL

Monitor Threshold lo,

Signal SMD(0)

265

300

325

mV

302

VSH

Monitor Threshold hi,

Signal SMD(1)

615

680

750

mV

303

dVS

VSH − VSL

350

390

430

mV

304

VCHK

Test Voltage for SMD

120

%VSH

305

I(RSMD)

Permissible

Safety Monitor Diode Current

5

mA

306

Ipd(SMD)

Pull-Down-Current in SMD

0.2

0.6

3

µA

Laser Driver LDKx, CI, RMDx

401

Vs(LDKx)

Saturation Voltage at LDKx

one channel only is activated;

I(LDK) = 100 mA

1.2

2

V

I(LDK) = 60 mA

0.8

1.3

V

402

Idc(LDKL)

Permissible Current

DC

120

mA

403

Idc(LDKM) Permissible Current

DC

100

mA

404

Idc(LDKH) Permissible Current

DC

100

mA

405

Vo()

Permissible Voltage at LDKx

12

V

406

VCI()

REGOK Monitor Threshold

100

760

900

mV