SC5014 データシートの表示（PDF） - Semtech Corporation

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SC5014

High Efficiency 4-Channel HB LED Driver with I2C Interface and Phase-Shifted PWM Dimming

Semtech Corporation 

SC5014

Electrical Characteristics (continued)

Parameter

Symbol

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

VIOn(SCP)

VIO_OCP

tSCP(DELAY)

IFLT(LEAK)

VFLT(LOW)

Thermal Shutdown Temperature

TOTP

Thermal Shutdown Hysteresis

TOTP-H

I2C Control Interface: SDA, SCL Timing Specifications

SCL Clock Frequency

SCL Clock Low Period

SCL Clock High Period

Hold Time Start Condition

SDA Setup Time

SDA Hold Time

Setup Time Stop Condition

Bus Free Time Between Stop & Start

FSCL

tLOW(SCL)

tHIGH(SCL)

tHD(START)

tSU(SDA)

tHD(SDA)

tSU(STOP)

tBF

Conditions

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

17xVSCP 20xVSCP 23xVSCP

V

0.2

V

1

µs

-1

1

µA

0.3

V

150

°C

10

°C

400 kHz

1.3

µs

0.6

µs

0.6

µs

100

ns

0

0.9

µs

0.6

µs

1.3

µs

Notes:

(1) Ensured by design and characterization, not production tested.

(2) LED current matching for 4 channels is defined as the largest of the two numbers, i.e., (MAX-AVG)/AVG and (AVG-MIN)/AVG; where MAX is the

maximum LED channel current, MIN is the minimum LED channel current and AVG is the average of the 4 LED channel currents.

(3) Refer to the application circuit on page 23, Figure 2.



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