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ISL97671A 데이터시트 PDF




Intersil에서 제조한 전자 부품 ISL97671A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 ISL97671A 자료 제공

부품번호 ISL97671A 기능
기능 6-Channel SMBus/I2C or PWM Dimming LED Driver
제조업체 Intersil
로고 Intersil 로고


ISL97671A 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 28 페이지수

미리보기를 사용할 수 없습니다

ISL97671A 데이터시트, 핀배열, 회로
6-Channel SMBus/I2C or PWM Dimming LED Driver with
Phase Shift Control
ISL97671A
The ISL97671A is a 6-Channel 45V dual dimming capable LED
driver that can be used with either SMBus/I2C or PWM signal
for dimming control. The ISL97671A can drive six channels of
LEDs from an input of 4.5V~26.5V to an output of up to 45V. It
can also operate from an input as low as 3V to an output of up
to 26.5V in bootstrap configuration (see Figure 38).
The ISL97671A features optional channel phase shift control
to minimize the input: output ripple characteristics and load
transients to improve efficiency and eliminate audible noise.
The device can also be configured in Direct PWM Dimming
with minimum dimming duty cycle of 0.007% at 200Hz.
The ISL97671A headroom control circuit monitors the highest
LED forward voltage string for output regulation, to minimize
the voltage headroom and power loss in a typical multi-string
operation.
The ISL97671A is offered in compact and thermally efficient
20 Ld QFN 4mmx3mm package.
Features
• 6 x 50mA channels
• 4.5V to 26.5V input with max 45V output
• 3V (see Figure 38) to 21V input with max 26.5V output
• PWM dimming with phase shift control
• SMBus/I2C controlled PWM or DC dimming
• Direct PWM dimming
• PWM dimming linearity
- PWM dimming with adjustable dimming frequency and
duty cycle linear from 0.4% to 100% <30kHz
- Direct PWM dimming duty cycle linear from 0.007% to
100% at 200Hz
• Current matching ±0.7%
• 600kHz/1.2MHz selectable switching frequency
• Dynamic headroom control
• Fault protection
- String open/short circuit, OVP, OTP, and optional output
short circuit fault protection
• 20 Ld 4mmx3mm QFN package
Applications
• Tablet PC to notebook displays LED backlighting
• LCD monitor LED backlighting
• Field sequential RGB LED backlighting
Typical Application Circuits
VIN = 4.5~26.5V
Q1 (OPTIONAL)
ISL97671A
1 FAULT
2 VIN
4 VDC
LX 20
OVP 16
PGND 19
7 SMBCLK/SCL
6 SMBDAT/SDA CH0 10
5 PWM
3 EN
CH1 11
CH2 12
CH3 13
17 RSET
CH4 14
8 FPWM
CH5 15
9 AGND
COMP 18
45V*, 6 x 50mA
*VIN > 12V
VIN = 4.5~26.5V
Q1 (OPTIONAL)
ISL97671A
1 FAULT
2 VIN
4 VDC
LX 20
OVP 16
PGND 19
7 SMBCLK/SCL
6 SMBDAT/SDA CH0 10
5 PWM
3 EN
CH1 11
CH2 12
CH3 13
17 RSET
CH4 14
8 FPWM
CH5 15
9 AGND
COMP 18
45V*, 6 x 50mA
*VIN > 12V
VIN = 4.5~26.5V
Q1 (OPTIONAL)
ISL97671A
1 FAULT
2 VIN
4 VDC
LX 20
OVP 16
8 FPWM
PGND 19
7 SMBCLK/SCL
6 SMBDAT/SDA CH0 10
5 PWM
3 EN
CH1 11
CH2 12
CH3 13
17 RSET
CH4 14
CH5 15
9 AGND
COMP 18
45V*, 6 x 50mA
*VIN > 12V
FIGURE 1A. SMBus/I2C CONTROLLED
DIMMING AND ADJUSTABLE
DIMMING FREQUENCY
FIGURE 1B. PWM DIMMING WITH PWM INPUT
AND ADJUSTABLE DIMMING
FREQUENCY
FIGURE 1. ISL97671A TYPICAL APPLICATION DIAGRAMS
FIGURE 1C. DIRECT PWM DIMMING
November 30, 2012
FN7709.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011, 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.




ISL97671A pdf, 반도체, 판매, 대치품
ISL97671A
Table of Contents
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PWM Boost Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Current Matching and Current Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Dynamic Headroom Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maximum DC Current Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PWM DIMMING Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PWM Dimming Frequency Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Phase Shift Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Switching Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5V Low Dropout Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IC Protection Features and Fault Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SMBus/I2C Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Write Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Read Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Slave Device Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SMBus/I2C Register Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
PWM Brightness Control Register (0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Device Control Register (0x01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fault/Status Register (0x02) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Identification Register (0x03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DC Brightness Control Register (0x07) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Configuration Register (0x08) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Output Channel Mask/Fault Readout Register (0x09) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Phase Shift Control Register (0x0A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Components Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Input Capacitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Inductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Output Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Output Ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Schottky Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
High-Current Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Low Voltage Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
16-Bit Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Field Sequential RGB LED Backlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 FN7709.3
November 30, 2012

4페이지










ISL97671A 전자부품, 판매, 대치품
ISL97671A
Electrical Specifications VIN = 12V, EN = 5V, RSET = 20.1k, unless otherwise noted. Boldface limits apply over the operating
temperature range, -40°C to +85°C. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
(Note 8)
TYP
MAX
(Note 8)
UNIT
FAULT PIN
IFAULT
VFAULT
LXstart_thres
Fault Pull-down Current
Fault Clamp Voltage with Respect to VIN
LX Start-up Threshold
VIN = 12V
VIN = 12, VIN - VFAULT
12 21
30
µA
6 7 8.3 V
0.9 1.2 V
ILXStart-up LX Start-up Current
1 3.5 5 mA
SMBus/I2C INTERFACE
VIL Guaranteed Range for Data, Clock Input Low
Voltage
0.8 V
VIH Guaranteed Range for Data, Clock Input High
Voltage
VOL SMBus/I2C Data line Logic Low Voltage
ILEAK
Input Leakage On SMBData/SMBClk
SMBus/I2C TIMING SPECIFICATIONS
IPULLUP = 4mA
Measured at 4.8V
1.5
VDD
V
0.17
V
-10 10 µA
tEN-SMB/I2C
Minimum Time Between EN high and
SMBus/I2C Enabled
1µF capacitor on VDC
2
ms
PWS
Pulse Width Suppression on
SMBCLK/SMBDAT
0.15
0.45
µs
fSMB
SMBus/I2C Clock Frequency
tBUF Bus Free Time Between Stop and Start
Condition
400 kHz
1.3 µs
tHD:STA
Hold Time After (Repeated) START Condition.
After this Period, the First Clock is Generated
0.6 µs
tSU:STA
Repeated Start Condition Setup Time
0.6 µs
tSU:STO
Stop Condition Setup Time
0.6 µs
tHD:DAT
Data Hold Time
300 ns
tSU:DAT
Data Setup Time
100 ns
tLOW
Clock Low Period
1.3 µs
tHIGH
Clock High Period
0.6 µs
tF Clock/data Fall Time
300 ns
tR Clock/data Rise Time
300 ns
NOTES:
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
9. At maximum VIN of 26.5V, minimum VOUT is limited 28V.
7 FN7709.3
November 30, 2012

7페이지


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구매 문의
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전력 반도체 전문업체

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관련 데이터시트

부품번호상세설명 및 기능제조사
ISL97671

6-Channel SMBus/I2C or PM Dimming LED Driver

Intersil
Intersil
ISL97671A

6-Channel SMBus/I2C or PWM Dimming LED Driver

Intersil
Intersil

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