ISL97671IRZ データシートの表示（PDF） - Renesas Electronics

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ISL97671IRZ

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

Renesas Electronics 

ISL97671

Electrical Specifications All specifications below are tested at TA = 25°C; VIN = 12V, EN = 5V, RSET = 20.52kΩ, 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

SWILimit

1.5

2.0

2.7

A

Internal Boost Switch ON-resistance

Soft-Start

rDS(ON)

SS

TA = +25°C

100% LED Duty Cycle

235

300 mΩ

7

ms

Peak Efficiency

Line Regulation

Boost Maximum Duty Cycle

Boost Minimum Duty Cycle

Lx Frequency High

Lx Frequency Low

LX Leakage Current

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

92.9

%

90.8

%

0.1

%

90

%

81

9.5 %

17

475

600

640 kHz

0.97

1.14

1.31 MHz

10 µA

REFERENCE

FAULT DETECTION

Short Circuit Threshold Accuracy

VSC

Reg0x08, SC[1:0] = 01

Reg0x08, SC[1:0] = 10

3.15

3.6

4.2

4.8

4.3

V

5.4

V

Reg0x08, SC[1:0]= 11

5.2

5.85

6.6

V

Temperature Shutdown Threshold

Temp_shtdwn

150

°C

Temperature Shutdown Hysteresis

Temp_Hyst

23

°C

Overvoltage Limit on OVP Pin

OVP Short Detection Fault Level

CURRENT SOURCES

VOVPlo

OVPfault

1.19

400

1.25 V

mV

DC Channel-to-Channel Current Matching

Current Accuracy

Dominant Channel Current Source

Headroom at CH Pin

Dominant Channel Current Sink Headroom

Range at CHx Pin

Voltage at RSET Pin

Maximum LED Current per Channel

PWM GENERATOR

IMATCH

RSET = 20.52kΩ, Reg0x00 = 0xFF,

(IOUT = 20mA)

IACC

VHEADROOM

ILED = 20mA

TA = +25°C

VHEADROOM_RANGE ILED = 20mA

TA = +25°C

VRSET

RSET = 20.52kΩ

ILEDmax

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

TA = +25°C

±0.7

±1.0 %

-1.5

+1.5 %

500

mV

(Note 11)

90

mV

1.2

1.22

1.24 mV

40

mA

Guaranteed Range for PWM Input Low Voltage

0.8

V

Guaranteed Range for PWM Input High Voltage

1.5

VDD V

PWM Input Frequency Range

FPWM

200

30,000 Hz

PWM Input Accuracy

PWMACC

8

bits

FN7631 Rev.4.00

Sep 7, 2017

Page 6 of 27

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