34844 datasheet(7/37 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34844

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Line Regulation (7)

VIN=7.0V to 28V

IOUT/VIN

-0.2

0.2

%/V

Load Regulation (7)

VLED = 8.0V to 65V (all Channels)

IOUT/VLED

-0.2

0.2

%/V

Slope compensation voltage ramp

RSLOPE = 68KΩ

VSLOPE

0.49

μs

Current Sense Amplifier Gain

ACSA

9.0

Current Sense Resistor

RSENSE

OTA Transconductance

200

μS

Transconductance Sink and Source Current Capability

ISS

100

μA

Output Voltage Precharge

VHOLD

0.45

0.5

0.55

FAIL PIN

Off-state Leakage Current

VFAIL = 5.5V

IFAIL_LEAK

μA

On-state Voltage Drop

ISINK = 4.0mA

VOL

0.4

Table 3. Static 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

Notes

This output is for internal use only and not to be used for other purposes

Minimum and Maximum output voltages are dependent on Min/Max duty cycle condition.

Guaranteed by design

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