TL4242

SLVS641B – APRIL 2008 – REVISED MARCH 2015

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6.2 ESD Ratings

VALUE

UNIT

Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)

±1000

V(ESD)

Electrostatic discharge

V

Charged-device model (CDM), per JEDEC specification JESD22-

±1000

C101(2)

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2)

JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

MIN

MAX

UNIT

VCC

Supply voltage

4.5

42

V

VST

Status (ST) output voltage

16

V

VPWM

PWM voltage

0

40

V

CD

Status delay (D) capacitance

0

2.2

μF

RREF

Reference (REF) resistor

0

10

Ω

TJ

Virtual-junction temperature

–40

150

°C

6.4 Thermal Information

TL4242

THERMAL METRIC(1)

DRJ (WSON)

UNIT

8 PINS

RθJA

Junction-to-ambient thermal resistance

39.0

RθJC(top)

Junction-to-case (top) thermal resistance

31.5

RθJB

Junction-to-board thermal resistance

15.5

°C/W

ψJT

Junction-to-top characterization parameter

0.3

ψJB

Junction-to-board characterization parameter

15.6

RθJC(bot)

Junction-to-case (bottom) thermal resistance

1.8

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

over recommended operating free-air temperature range, VI = 13.5 V, RREF = 0.47 Ω, VPWM,H, TJ = –40°C to 150°C, all

voltages with respect to ground (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IqL

Supply current

VQ = 6.6 V

12

22

mA

IqOFF

Supply current, off mode

PWM = L, TJ < 85°C

0.1

2

μA

OUTPUT ELECTRICAL CHARACTERISTICS

VQ – VREF

(1) = 6.6 V

357

376

395

VQ – VREF = 6.6 V, RREF = 1 Ω

168

177

185

IQ

Output current

mA

VQ – VREF = 6.6 V, RREF = 0.39 Ω

431

454

476

VQ – VREF = 5.4 V to 7.8 V, VI = 9

357

376

395

V to 16 V

IQmax

Output current limit

RREF = 0 Ω

600

mA

Vdr

Drop voltage

IQ = 300 mA

0.35

0.7

V

PWM INPUT ELECTRICAL CHARACTERISTICS

VPWM,

High-level PWM voltage

2.6

V

H

VPWM,

Low-level PWM voltage

0.7

V

L

IPWM,H High-level PWM input current

VPWM = 5 V

220

500

μA

IPWM,L

Low-level PWM input current

VPWM = 0 V

–1

1

μA

(1)

VQ – VREF equals the forward voltage sum of the connected LEDs (see Figure 3).

4

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