Analog Integrated Circuit Device Data



Freescale Semiconductor

9

34844

ELECTRICAL CHARACTERISTICS

STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS

BOOST (CONTINUED)

VSLOPE

Slope compensation voltage ramp - RSLOPE = 68 k

-

0.49

-

V/

s

ACSA

Current Sense Amplifier Gain

-

9.0

-

RSENSE

Current Sense Resistor

-

22

-

m



GM

OTA Transconductance

-

200

-

S

ISS

Transconductance Sink and Source Current Capability

-

100

-

A

FAIL PIN

IFAIL_LEAK

Off-state Leakage Current - VFAIL = 5.5 V

-

-

50

A

VOL

On-state Voltage Drop - ISINK = 4.0 mA

-

-

0.4

V

LED CHANNELS

ISINK

Sink Current

ICHx Register = 255, PIN&NIN = Disabled, TA=25 °C

RISET=3.48 k

0.1%

78.4

80

81.6

mA

VMIN

Regulated minimum voltage across drivers, Pulse Width > 400 ns

625

700

775

mV

IMATCH

Current Matching Accuracy

-2.0

-

2.0

%

VSET

ISET Pin Voltage

RISET=3.48 k

0.1%

2.007

2.048

2.069

V

ILEDRES

LED Current Amplitude Resolution

1.0 mA < ILED < 80 mA

-

1.5

-

%

ICH_LEAK

Off-state Leakage Current, All channels - (VCH = 45 V)

-

-

10

A

PIN INPUT

VPIN_DIS

Voltage to Disable PIN mode

2.2

-

-

V

IPIN

PIN Bias Current

PIN = VSET

-2.0

-

2.0

A

IDIM_PIN

Analog Dimming Current, ICHx Register = 255, RISET=3.48 k

 0.1%

PIN = VSET/2

PIN = VSET

36

76

40

80

44

84

mA

NIN INPUT

VNIN_DIS

Voltage to Disable NIN mode

2.2

-

-

V

ININ

NIN Bias Current

NIN = VSET

-2.0

-

2.0

A

IDIM_NIN

Analog Dimming Current

ICHx Register = 255, RISET=3.48 k

 0.1%

NIN = VSET/2

NIN = 0 V

36

76

40

80

44

84

mA

Table 4. 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.

Symbol

Characteristic

Min

Typ

Max

Unit

Notes