ISL97694AIRTZ-T Просмотр технического описания (PDF) - Intersil

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производитель

ISL97694AIRTZ-T

Single or Multiple Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers

Intersil 

ISL97692, ISL97693, ISL97694A

Electrical Specifications All of the following specifications are characterized at TA = -40°C to +85°C; VIN = EN = 3.3V, RISET = 26.7kΩ

(ISL97692) or RISET = 35.5kΩ (ISL97693/4A), unless otherwise noted. Boldface limits apply over the operating temperature range, -40°C to

+85°C. (Continued)

PARAMETER

DESCRIPTION

CONDITION

MIN

MAX

(Note 8) TYP (Note 8)

UNIT

DMAX

DMIN

fSW

Boost Maximum Duty Cycle

Boost Minimum Duty Cycle

Boost Switching Frequency

ILX_leakage LX Leakage Current

FSW = 400kHz

FSW = 1.5MHz

FSW = 400kHz

FSW = 1.5MHz

RFSW = 216kΩ

RFSW = 72.1kΩ

RFSW = 57.7kΩ

LX = 26V

93.5

%

93

%

11

%

15

%

360 400 440

kHz

1.2

MHz

1.35

1.5

1.65

MHz

10

µA

REFERENCE

IMATCH

Channel-to-Channel DC Current Matching

IACC

Current Accuracy

FAULT DETECTION

ILED = 20mA

ILED = 20mA

-2.5

+2.5

%

-3

+3

%

VSC

Channel Short Circuit Threshold

Vtemp

Over-Temperature Threshold

VOVPlo

Overvoltage Limit on OVP Pin

OVPfault

OVP Short Detection Fault Level

CURRENT SOURCES

6.75

8

9.25

V

150

°C

1.180 1.22 1.245

V

75

mV

Vheadroom

ILED(max)

Dominant Channel Current Source

Headroom at CH Pin

Maximum LED Current per Channel

ILED = 20mA

TA = +25°C

2.7V < VIN < 5.5V, VOUT = 21V

(ISL97692)

300

mV

40

mA

2.7V < VIN < 5.5V, VOUT = 21V

30

mA

(ISL97693 and ISL97694A)

PWM GENERATOR

VIL

Guaranteed Range for PWM Input Low

Voltage

0.5

V

VIH

Guaranteed Range for PWM Input High

Voltage

1.5

V

FPWMI

PWMI Input Frequency Range

DPWMACC Direct PWM Dimming Output Resolution

tDPWM_ON_MIN Direct PWM Dimming Minimum On-Time

PWMACC

PWM Dimming with Adjustable Dimming

Frequency Output Resolution

(ISL97692, ISL97693 and ISL97694A)

(ISL97692, ISL97693 and ISL97694A)

(ISL97692, ISL97694A)

100

30,000 Hz

80

ns

350

ns

12

bit

FPWM

Generated PWM Dimming Frequency Range (ISL97692, ISL97694A)

SMBus/I2C INTERFACE (ISL97694A only)

100

30,000 Hz

VIL

Guaranteed Range for Data, Clock Input Low

Voltage

0.5

V

VIH

Guaranteed Range for Data, Clock Input High

Voltage

VOL

SMBus/I2C Output Data Line Logic Low

IPULLUP = 4mA

Voltage

1.5

VDD

V

0.17

V

ILEAK

Input Leakage On SDA/SCL

Measured at 4.8V

-10

10

µA

11

FN7839.2

July 19, 2012

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