参数资料
型号: ISL97635IRZ-T
厂商: Intersil
文件页数: 6/28页
文件大小: 0K
描述: IC LED DRVR WHT/RGB BCKLGT 24QFN
标准包装: 6,000
拓扑: PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: RGB,白色 LED
频率: 600kHz,1.2MHz
电源电压: 6 V ~ 24 V
输出电压: 34.5V
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
ISL97635
Electrical Specifications
All specifications below are tested at T A = -40°C to +85°C; V IN = 12V, EN = 5V, R SET = 36.6k Ω ,
unless otherwise noted. 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. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
t HD:DAT
t SU:DAT
t LOW
Data Hold Time
Data Setup Time
Clock Low Period
300
250
4.7
ns
ns
μs
t HIGH
t F
t R
Clock High Period
Clock/data Fall Time
Clock/data Rise Time
4.0
50
300
1000
μs
ns
ns
GENERAL TIMING SPECIFICATIONS (Note 4)
t 1
Minimum Setup Time Between V IN Rising above VUVLO
EN = 1, T A = +25°C, VDC
80
μs
with EN = 1 and SMBus Communications
capacitor < 10μF
t 2
Minimum Setup Time Between EN Going High with V IN
V IN > VUVLO, T A = +25°C,
80
μs
above VUVLO and SMBus Communications
VDC capacitor < 10μF
t 3
Minimum Time Between V IN Rising above VUVLO with
EN = 1, T A = +25°C
4.5
ms
EN = 1 to SMBus BL CTRL On
t 4
Minimum Time Between EN Going High with V IN above
V IN > VUVLO, T A = +25°C
4.5
ms
VUVLO to SMBus BL CTRL On
t 5
Minimum Time for LED Output to Respond to SMBus Data at V IN > VUVLO, EN = 1,
any Levels
T A = +25°C
5
μs
t 6
Response Time Between Backlight CTRL Off with Boost
V IN > VUVLO, EN = 1,
5
μs
Not Switching to Backlight CTRL On with Boost Switching T A = +25°C
t 7
Response Time Between Backlight CTRL On with Boost
V IN > VUVLO, EN = 1,
5
μs
Switching to Backlight CTRL Off with Boost Not Switching T A = +25°C
t 8
LED Channel Short Circuit Fault Detection to Status
V IN > VUVLO, EN = 1,
6
ms
Register Data Ready
T A = +25°C, LEDs Active
t 9
V OUT-GND Short Circuit Detection During Operation to
V IN > VUVLO, EN = 1,
5
μs
Status Register Data Ready
T A = +25°C, Fault FET used
t 10
Time Between VIN Rising Above VUVLO with EN = 1 and
EN = 1, VDC capacitor < 10μF,
30
ms
V OUT-GND Short being Reported in Status Register
T A = +25°C, Fault FET used.
t 11
Time Between EN Going High with V IN Above VUVLO and V IN > VUVLO, VDC capacitor <
a V OUT-GND Short being Reported in Status Register
10μF, T A = +25°C, Fault FET
30
ms
used.
CURRENT SOURCES
V headroom
Dominant Channel Current Source Headroom at IIN Pin
I LED = 20mA, T A = +25°C
100
mV
V RSET
ILEDmax
Voltage at RSET Pin
Maximum LED Current per Channel
R SET = 36.6k Ω
R SET = 20.9k Ω
680
700
35
720
mV
mA
PWM GENERATOR
FPWM
Generated PWM Frequency
C FPWM = 27nF
200
Hz
C PWMO = 220nF
DPWM
Duty Cycle Of Generated PWM (DC-to-PWM)
V PWMO = 0.3V
90
%
CFPWM = 27nF
V PWMO = 1.1V
CFPWM = 27nF
10
%
tMAX_PWM_OFF
Maximum PWMI Off Time Before Shutdown
EN/PWMI toggles
28
ms
6
FN6434.2
December 22, 2008
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