iC-WKP

15 V CW P-TYPE LASER DIODE DRIVER

Rev A6, Page 5/10

ELECTRICAL CHARACTERISTICS

Operating Conditions: VCC = 3...15 V, RM = 0.2...500 kΩ, Tj = -40...125 °C unless otherwise stated

Item

Symbol

Parameter

Conditions

Unit

No.

Min.

Typ.

Max.

Total Device

001

VCC

Permissible Supply Voltage

3

15

V

002

I(LDA)m

Permissible Laser Drive Current

(closed control loop)

Control range

-350

-10

mA

003

Idc(VCC)

Supply Current without load path Closed control loop, I(MDK) = 0,

I(LDA) = -350 mA

5

10

mA

004

Ioff(VCC)

Supply Current after Reset

2.4

5

mA

005

Ir(VCC)

Reverse Supply Current

RM = 50 kΩ, VCC = -6 V

-15

-3

mA

006

ton()

Turn-on Delay

VCC: 0 → 5 V to 95% I(LDA),

I(LDA) = I(LDA)m, CI = 3.3 µF

600

µs

007

Vc()hi

Clamp Voltage hi at MDA

I() = 10 mA, other pins open

1

4

V

008

Vc()lo

Clamp Voltage lo at

VCC, LDA, MDA, CI, VCCA

I() = -10 mA, other pins open

-9

V

009

Vc()hi

Clamp Voltage hi at MDK refer-

enced to VCCA

I() = 10 mA, other pins open

8

11

14

V

010

Vc()lo

Clamp Voltage lo at MDK refer-

enced to VCCA

I() = -10 mA, other pins open

-11

-1

V

011

Vc()hi

Clamp Voltage hi at VCC, LDA,

CI, VCCA

I() = 10 mA, other pins open

16

24

V

Reference and Monitor Inputs MDA, MDK, AGND

101

Vref(MDK) Reference Voltage at MDK

Vref(MDK) = VCCA − V(MDK),

closed control loop, VCC − V(LDA) > Vs(LDA)

1.18

1.24

1.30

V

102

dV(MDK)

Reference Voltage Temperature

Drift at MDA

See 101

120

µV/°C

103

Ierr(MDK)

Input Current in MDK

Closed control loop, I(MDA) = 0

-300

300

nA

104

dI(MDK)

Input Current Temperature Drift in

MDK

See 103

-1

1

nA/°C

105

APCerr

Control Error

RM = 10 kΩ;

Tj = 0...80 °C

0.5

%

Tj = -40...125 °C

2

%

106

dI(MD)

Supply Voltage Suppression

V(VCC): 3 → 15 V, I(LDA) = -350 mA

-2

2

%

107

Rgnd()

Resistor AGND-GND

3

Ω

108

CR()

Current Ratio I(MDA)/I(MDK)

I(MDA) = 1 µA...1 mA

0.98

1.02

I(MDA) = 1...6 mA

0.95

1.05

109

TC()

Current Ratio Temperature

Coefficient I(MDA)/I(MDK)

I(MDA) = 1 µA...1 mA

-0.005

0.005

%/°C

-0.025

0.025

%/°C

110

Vf(MDA)

Voltage at MDA

I(MDA) = 1 µA...6 mA

0.4

1.3

2

V

Laser Driver LDA

201

Vs(LDA)

Saturation Voltage at LDA

referenced to VCC

Vs(LDA) = V(VCC) − V(LDA);

I(LDA)= -40 mA

0.9

V

I(LDA)= -350 mA

1.3

V

202

dI(MDK)

Load Balancing Error

I(LDA): -20 → -350 mA

-2.5

2

%

203

It(LDA)

Overcurrent Threshold in LDA

-700

-360

mA

204

toff()

Overcurrent Reset Delay

Lack of feedback: I(MD) = 0 to I(LDA) > -10 mA,

VCC = 5 V, CI = 3.3 µF

600

µs

205

Vf()

Flyback Diode Forward Voltage

V(GND)-V(LDA)

I(LDA) > -350 mA

1.5

V

206

Rvcc()

Transient Protection Resistor

VCC to VCCA

3

Ω

207

Vt(MDK)

Shutdown Threshold at MDK

Vt(MDK) = V(VCCA) − V(MDK), t > 1 µs

1.35

2.1

V

Control Release Flip-Flop

401

VCCen

Set Threshold for Enable Flip-

Flop

0.6

1.9

V

402

Toff

Overtemperature Shutdown

140

165

°C