MC34844AEPR2 datasheet(39/62 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34844A

ELECTRICAL CHARACTERISTICS

STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS

MC34844A

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=3.48 k

Ω 0.1%

NIN = VSET/2

NIN = 0 V

IDIM_NIN

OVER-TEMPERATURE PROTECTION

Over-temperature Threshold(22)

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 < 4.0 mA

VOLI

0.4

Input Current

IINI

-5.0

5.0

μA

Input Capacitance(22)

CINI

ρF

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

Input Low Voltage

VILL

-0.3

0.5

Input High Voltage

VIHL

1.5

5.5

Input Hysteresis

VHYSL

0.1

Input Low Voltage (EN)

VILL

-0.3

0.5

Input High Voltage (EN)

VIHL

2.1

Output Low Voltage (CK)

ISINK < 2.0 mA

VOLL

0.45

Output High Voltage (CK)

ISOURCE < 2.0 mA

VOHL

2.2

5.5

Input Current

IIIL

-5.0

5.0

μA

Input Capacitance(22)

CINI

5.0

ρF

Notes

22.

Guaranteed by design

Table 11. Static and Dynamic Electrical Characteristics (continued)

Characteristics noted under conditions VIN = 12 V, VOUT = 42 V, PWM = VDC1, M/~S = VDC1, PIN & NIN = VDC1,

-40

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

Characteristic

Symbol

Min

Typ

Max

Unit

MC34844AEPR2 Datasheet(PDF) 39 Page - Freescale Semiconductor, Inc

MC34844AEPR2 Datasheet(HTML) 39 Page - Freescale Semiconductor, Inc

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