参数资料
型号: ISL97677IRZ-TK
厂商: Intersil
文件页数: 7/23页
文件大小: 0K
描述: IC LED DVR PWM CTRL 8CH 32QFN
标准包装: 1,000
拓扑: 线性(LDO),PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 500kHz ~ 1.5MHz
电源电压: 4.75 V ~ 26 V
输出电压: 45V
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
ISL97677
Electrical Specifications
All specifications below are characterized at T A = -40°C to +85°C; V IN = 12V, /SHUT = 5V,
I SET = 36k Ω , unless otherwise noted. Boldface limits apply over the operating
temperature range, -40°C to +85°C. (Continued)
MIN
MAX
PARAMETER
DESCRIPTION
CONDITION
(Note 7)
TYP
(Note 7)
UNIT
SMBus INTERFACE (SMBus Mode, 1D_EN = 0)
V IL
Logic Input Low Voltage - SMBCLK/SCL,
SMBDAT/SDA
0.8
V
V IH
V OL
Logic Input High Voltage - SMBCLK/SCL,
SMBDAT/SDA
SMBus Data Line Logic Low Voltage with
1.1k Ω series resistor from data bus to
I PULLUP = 350μA
1.5
5.5
0.4
V
V
SMBDAT pin
SMBus Data Line Logic Low Voltage without
series resistor from data bus to SMBDAT pin
I PULLUP = 4mA
0.17
V
SMBus TIMING SPECIFICATIONS
f SMB
t BUF
t HD:STA
SMBus Clock Frequency
Bus Free Time Between Stop and Start
Condition
Hold Time After (Repeated) START
Condition. After this Period, the First Clock is
4.7
4.0
250
kHz
μs
μs
Generated
t SU:STA
t SU:STO
t HD:DAT
t SU:DAT
t LOW
t HIGH
t F
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Hold Time (Note 9)
Data Setup Time (Note 9)
Clock Low Period
Clock High Period
Clock/Data Fall Time (Note 9)
4.7
4.0
300
250
4.7
4.0
300
μs
μs
ns
ns
μs
μs
ns
CURRENT SOURCES
V HEADROOM
Dominant Channel Current Source
Headroom at CH Pin
I LED = 50mA
T A = +25°C
1.0
V
V ISET
ILEDmax
Voltage at ISET Pin
Maximum LED Current per Channel
LED config = 8P10S
1.18
1.21
50
1.24
V
mA
with VF = 3.4V and
V IN = 11V
PWM GENERATOR
FPWM
Dimming Range
VFSW
FPWMI
VFPWM
Generated PWM Frequency
PWM Dimming Duty Cycle Limits (Note 9)
FSW Voltage
PWMI Input Frequency Range (Note 9)
VFPWM Voltage
R FPWM = 330k Ω
R FPWM = 3.3k Ω
f PWM ≤ 30kHz
R FSW = 33k Ω
R FPWM = 3.3k Ω
180
18
0.4
1.18
200
1.18
200
20
1.21
1.21
220
22
100
1.24
20k
1.25
Hz
kHz
%
V
Hz
V
NOTES:
7. 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.
8. At maximum V IN of 26V, minimum V OUT is 28V. Minimum V OUT can be lower at lower V IN
9. Limits established by characterization and are not production tested.
7
FN6996.1
November 13, 2009
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