34844_08 datasheet(8/36 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34844

ELECTRICAL CHARACTERISTICS

NIN INPUT

Voltage to Disable NIN mode

VNIN_DIS

2.2

NIN Bias Current

NIN = VSET

ININ

-2.0

2.0

μA

Analog Dimming Current

ICHx Register = 255, RISET=5.1k

Ω 0.1%

NIN = VSET/2

NIN = 0V

IDIM_NIN

23.75

47.50

26.25

52.50

OVER-TEMPERATURE PROTECTION

Over-temperature Threshold(9)

Rising

Hysteresis

OTT

150

165

175

°C

I2C/SM-BUS PHYSICAL LAYER [SCK, SDA]

I2C Address

ADRI2C

1110110

Binary

SM-Bus Address

ADRSMB

1110110

Binary

Input Low Voltage

VILI

-0.3

0.8

Input High Voltage

VIHI

2.1

5.5

Input Hysteresis

VHYSI

0.3

Output Low Voltage

Sink Current < 4.0mA

VOLI

0.4

Input Current

IINI

-5.0

5.0

μA

Input Capacitance(9)

CINI

ρF

LOGIC INPUTS / OUTPUTS (CK, M/~S, PWM, A0/SEN)

Input Low Voltage

VILL

-0.3

0.5

Input High Voltage

VIHL

1.5

5.5

Input Hysteresis

VHYSL

0.1

Input Current

IIIL

-5.0

5.0

μA

Output Low Voltage (CK)

ISINK < 2.0mA

VOLL

0.2

Output High Voltage (CK)

ISOURCE < 2.0mA

VOHL

2.2

5.5

Input Capacitance(9)

CINI

5.0

ρF

Notes

Guaranteed by design

Table 3. Electrical Characteristics (continued)

Characteristics noted under conditions VIN = 12V, VOUT = 42V, ILED = 50mA, PWM = VDC1, M/~S = VDC1,

PIN & NIN = VDC1, -40

°C ≤ TA ≤ 105°C, PGND = 0V, unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

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