SC5010H 데이터 시트보기 (PDF) - Semtech Corporation

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SC5010H

High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming

Semtech Corporation 

SC5010H

Electrical Characteristics (continued)

Parameter

Current Sink (IO1 to IO8)

IOx Dimming Minimum Pulse Width

ISET pin voltage

Regulation Voltage

Current Sink Disable Threshold

Current Sink Rise/Fall Time (1)

LED Current Accuracy

LED Current Matching (2)

IOn Off Leakage Current

IO Switching Frequency

Phase Delay Time between IO Pins

(IO1 to IO8)

Symbol

TPWM(MIN)

VISET

VIOn(REG)

VIOn(DIS)

tRISE/FALL

IOn(ACC%)

IOn(MATCH)

IOn(LEAK)

FPWM(IO)

tPD

PWM Output Resolution

Fault Protection

LED Short Circuit Protection Threshold

LED Open Circuit Protection Threshold

LED Short Circuit Fault Delay

FLT Pin Leakage Current

FLT Output Low

Over-Temperature Protection

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

VIOn(SCP)

VIO_OCP

tSCP(DELAY)

IFLT(LEAK)

VFLT(LOW)

Conditions

FPWM(LED) = 100Hz - 30kHz

Voltage of Regulating String

Checked at Power-up

Rising edge from 10% to 90% of IO(n)

PWMI = 100%, TA = +25°C

PWMI = 100%, TA = +25 °C

PWMI = 100%, TA = -40 °C to +85 °C

PWMI = 0V, EN = 0V, VIO1 ~ VIO8 = 25V

FAST_FREQ = 0

FAST_FREQ = 1 (Default Setting)

FAST_FREQ = 1 (default setting)

tPD = (1/8)*(1/FPWM(IO)), 8 Strings On

FPWM(IO) = 10kHz

FPWM(IO) = 20kHz

R4 and R5 (3)

VOVP set to 1.5V, FLT goes low

VEN = 0V, VFLT = 5.0V

-5mA from FLT to VCC

Min Typ Max Units

300

ns

1.23

V

0.9

V

0.6

V

25

ns

39.2

40

40.8

mA

±1

%

±2

%

0.1

1

µA

10

kHz

20

6.25

µs

10

bits

9

17xVSCP 20xVSCP 23xVSCP

V

0.2

V

1

µs

-1

1

µA

0.3

V

150

°C

10

°C



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