SC5010 datasheet(4/36 Pages) SEMTECH

Part #	SC5010

Description	High Effi ciency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC5010

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Boost Converter

CS Current Limit Threshold

V

CS(ILIM)

0.36

0.40

0.44

V

Soft-start Time (1)

t

SS

From EN to end of soft start

4.4

ms

Boost Oscillator Frequency

F

SW

R

FSET

= 100kΩ

0.85

1

1.15

MHz

Boost Oscillator Frequency

F

OSC

R

FSET

Varies

0.2

2.2

MHz

Maximum duty cycle

D

MAX

85

90

%

Output Disconnect Gate Drive

DRVP Sink Current

I

DRVP(L)

DRVP = 12V

20

μA

DRVP clamp voltage

V

CLAMP

DRVP floating, V

CLAMP

= V

IN

- V

DRVP

57

8

V

DRVP Pin Leakage Current

I

LEAK

V

DRVP

= 27V, V

EN

= 0V

0.1

1

μA

Control Signals: EN, PWMI, SYNC, SDA, SCL

High Voltage Threshold

V

IH

V

CC

= 4.5V to 5.5V

2.1

V

Low Voltage Threshold

V

IL

V

CC

= 4.5V to 5.5V

0.8

V

SDA Output Low

V

SDA(L)

-6mA from V

CC

to SDA

0.3

V

Pin Leakage Current

I

LEAK

V

EN

= 0V, V

VSYNC

= V

PWMI

= V

ISET

= V

FSET

= V

SDA

= V

SDL

= 5.0V

-1

1

μA

PWM Dimming Input

PWMI Input Dimming Frequency

F

PWMI

100

30k

Hz

SYNC Input Frequency

F

SYNC

30

100k

Hz

PWMI Input Resolution

100Hz < F

PWMI

< 10kHz

10

bits

10kHz < F

PWMI

< 20kHz

9

bits

Over-Voltage Protection

OVP Trip Threshold Voltage

V

OVP(TRIG)

OVP Rising

1.1

1.2

1.3

V

OVP Hysteresis

V

OVP(HYS)

OVP Falling

10

mV

OVP Leakage Current

I

OVP(LEAK)

OVP = 5V

0.1

1

μA

Electrical Characteristics (continued)

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