ISL97671AIRZ-EVALZ Ver la hoja de datos (PDF) - Renesas Electronics

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ISL97671AIRZ-EVALZ

6-Channel SMBus/I2C or PWM Dimming LED Driver with Phase Shift Control

Renesas Electronics 

ISL97671A

Electrical Specifications VIN = 12V, EN = 5V, RSET = 20.1kΩ, unless otherwise noted. Boldface limits apply across the operating

temperature range, -40°C to +85°C. (Continued)

PARAMETER

SYMBOL

CONDITION

MIN

(Note 8) TYP

MAX

(Note 8) UNIT

BOOST

Boost FET Current Limit

Internal Boost Switch ON-resistance

Soft-Start

SWILimit

rDS(ON)

SS

TA = +25°C

100% LED Duty Cycle

1.5

2.0

2.7

A

235

300 mΩ

7

ms

Peak Efficiency

Line Regulation

Boost Maximum Duty Cycle

Boost Minimum Duty Cycle

Lx Frequency High

Lx Frequency Low

LX Pin Leakage Current

REFERENCE

Eff_peak

IOUT/VIN

DMAX

DMIN

fOSC_hi

fOSC_lo

ILX_leakage

VIN = 12V, 72 LEDs, 20mA each, L = 10µH

with DCR 101mΩTA = +25°C

VIN = 12V, 60 LEDs, 20mA each, L = 10µH

with DCR 101mΩTA = +25°C

fSW = 1, 600kHz

fSW = 0, 1.2MHz

fSW = 1, 600kHz

fSW = 0, 1.2MHz

fSW = 1, 600kHz

fSW = 0, 1.2MHz

LX = 45V, EN = 0V

90

81

475

0.97

92.9

90.8

0.1

600

1.14

%

%

%

%

9.5

%

17

640 kHz

1.31 MHz

10

µA

FAULT DETECTION

Short Circuit Threshold Accuracy

Temperature Shutdown Threshold

VSC

Temp_shtdwn

7.5

8.2

V

150

°C

Temperature Shutdown Hysteresis

Temp_Hyst

23

°C

Overvoltage Limit on OVP Pin

CURRENT SOURCES

VOVPlo

1.199

1.24 V

DC Channel-to-Channel Current Matching

Current Accuracy

Dominant Channel Current Sink Headroom

Range at CHx Pin

Dominant Channel Current Sink Headroom

Range at CHx Pin

Voltage at RSET Pin

Maximum LED Current per Channel

PWM GENERATOR

IMATCH

RSET = 20.1kΩ, Reg0x00 = 0xFF,

(IOUT = 20mA)

IACC

VHEADROOM

ILED = 20mA

TA = +25°C

VHEADROOM_RANGE ILED = 20mA

TA = +25°C

VRSET

RSET = 20.1kΩ

ILED(max)

VIN = 12V, VOUT = 45V, fSW = 1.2MHz,

TA = +25°C

±0.7

±1.0 %

-1.5

+1.5 %

500

mV

(Note 10)

90

mV

1.2

1.22

1.24 V

50

mA

Guaranteed Range for PWM Input Low Voltage

Guaranteed Range for PWM Input High Voltage

PWM Input Frequency Range

PWM Dimming Accuracy (Except Direct PWM

Dimming)

VIL

VIH

FPWMI

PWMACC

0.8

V

1.5

VDD V

200

30,000 Hz

8

bits

Direct PWM Minimum On Time

PWM Dimming Frequency Range

tDIRECTPWM

FPWM

Direct PWM Mode

250

350 ns

100

30,000 Hz

FN7709 Rev.4.00

Sep 14, 2017

Page 6 of 28

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