SC5014AEVB datasheet(4/27 Pages) SEMTECH

Part #	SC5014AEVB

Description	High Efficiency 2-Channel HB LED Driver with I2C Interface and Direct PWM Dimming

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC5014A

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Boost Oscillator Frequency

F

SW

R

FSET = 00kΩ

0.85

.5

MHz

Boost Oscillator Frequency

F

OSC

R

FSET Varies

0.2

2.2

MHz

Maximum Duty Cycle

D

MAX

88

92

%

Control Signals: EN, PWMI, SDA, SCL

High Voltage Threshold

V

IH

V

CC = 4.5V to 5.5V

2.

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, VPWMI = VISET = VFSET = VSDA = VSCL = 5.0V

-

µA

PWM Dimming Input

PWMI Input Dimming Frequency

F

PWMI

00

30k

Hz

Over-Voltage Protection

OVP Trip Threshold Voltage

V

OVP(TRIG)

OVP Rising

.

.2

.3

V

OVP Hysteresis

V

OVP(HYS)

OVP Falling

0

mV

OVP Leakage Current

I

OVP(LEAK)

OVP = 5V

0.

µA

Current Sink (IO )

IOx Dimming Minimum Pulse Width

T

PWM(MIN)

F

PWM(LED) = 00Hz - 30kHz

300

ns

ISET pin Voltage

V

ISET

.23

V

Regulation Voltage

V

IOn(REG)

Voltage of Regulating String

0.9

V

Current Sink Disable Threshold

V

IOn(DIS)

Checked at Power-up

0.6

V

Current Sink Rise/Fall Time ()

t

RISE/FALL

R

ising Edge from 0% to 90% of I

O(n)

25

ns

LED Current Accuracy

I

On(ACC%)

PWMI = 00%, T

A=+25 °C

96

200

204

mA

LED Current Matching (2)

I

On(MATCH)

PWMI = 00%, T

A=+25 °C

±.0

%

PWMI = 00%, T

A=-40 °C, +85 °C

±2.0

%

I

On Off Leakage Current

I

On(LEAK)

PWMI = 0V, EN = 0V, V

IO = 25V

0.

µA

Electrical Characteristics (continued)

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