SC5010HEVB データシートの表示（PDF） - Semtech Corporation

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SC5010HEVB

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

Semtech Corporation 

SC5010H

Electrical Characteristics (continued)

Parameter

Symbol

Conditions

Min Typ Max Units

Boost Converter

CS Current Limit Threshold

Soft-start Time (1)

Boost Oscillator Frequency

Boost Oscillator Frequency

Maximum Duty Cycle

Output Disconnect Gate Drive

VCS(ILIM)

tSS

FSW

FOSC

DMAX

From EN to end of soft start

RFSET = 100kΩ

RFSET Varies

0.36 0.40 0.44

V

4.4

ms

0.85

1

1.15 MHz

0.2

2.2 MHz

85

90

%

DRVP Sink Current

IDRVP(L)

DRVP clamp voltage

VCLAMP

DRVP Pin Leakage Current

ILEAK

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

DRVP = 12V

DRVP floating, VCLAMP = VIN - VDRVP

VDRVP = 27V, VEN = 0V

20

µA

5

7

8

V

0.1

1

µA

High Voltage Threshold

Low Voltage Threshold

SDA Output Low

Pin Leakage Current

VIH

VIL

VSDA(L)

ILEAK

VCC = 4.5V to 5.5V

2.1

VCC = 4.5V to 5.5V

-6mA from VCC to SDA

VEN = 0V, VVSYNC = VPWMI = VISET = VFSET = VSDA = VSDL

= 5.0V

-1

V

0.8

V

0.3

V

1

µA

PWM Dimming Input

PWMI Input Dimming Frequency

SYNC Input Frequency

FPWMI

FSYNC

PWMI Input Resolution

Over-Voltage Protection

100Hz < FPWMI < 10kHz

10kHz < FPWMI < 20kHz

100

30k

Hz

30

100k Hz

10

bits

9

bits

OVP Trip Threshold Voltage

OVP Hysteresis

OVP Leakage Current

VOVP(TRIG)

VOVP(HYS)

IOVP(LEAK)

OVP Rising

OVP Falling

OVP = 5V

1.18 1.23 1.28

V

10

mV

0.1

1

µA



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