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参数资料
| 型号： | ISL97683IRTZ |
| 厂商： | Intersil |
| 文件页数： | 6/17页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR PWM CTRL 3CH 16TQFN |
| 标准包装： | 100 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 3 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 频率： | 500kHz ~ 650kHz，900kHz ~ 1.1MHz |
| 电源电压： | 4 V ~ 26.5 V |
| 输出电压： | 45V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
ISL97682, ISL97683, ISL97684
Electrical Specifications All specifications below are characterized at T A = -40°C to +85°C; V IN = 12V, EN = 5V, R SET = 20k Ω ,
unless otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
MIN
MAX
PARAMETER
D MIN
DESCRIPTION
Boost Minimum Duty Cycle
CONDITION
V FSW < 2.4V (F SW = 600kHz)
(Note 7)
TYP
(Note 7)
8
UNIT
%
V FSW > 2.4V
(F SW = 1.0MHz)
15
%
F SW
ILX_leakage
Boost Switching Frequency
LX Leakage Current
F SW < 2.4V
F SW > 2.4V
LX = 45V, EN = 0
500
0.9
600
1.0
650
1.1
10
kHz
MHz
μA
REFERENCE
I MATCH
Channel-to-Channel DC Current Matching
R SET = 20k Ω (I LED = 20mA for
ISL97683/4 and 40mA for
-2
+2
%
ISL97682)
R SET = 40k Ω (I LED = 10mA for
ISL97683/4 and 20mA for
-2.5
+2.5
%
ISL97682)
I ACC
Current Accuracy
I LED = 20mA (ISL97683/4)
I LED = 40mA (ISL97682)
-2
+2
%
FAULT DETECTION
V SC
V temp
V temp_acc
V OVPlo
OVP fault
Channel Short Circuit Threshold
Over-Temperature Threshold
Over-Temperature Threshold Accuracy
Overvoltage Limit on OVP Pin
OVP Short Detection Fault Level
3.8
1.18
4.4
150
5
1.22
70
4.9
1.24
V
°C
°C
V
mV
CURRENT SOURCES
V HEADROOM
Dominant Channel Current Source Headroom
at CH Pin
I LED = 20mA
500
mV
V RSET
I LED(max)
Voltage at RSET Pin
Maximum LED Current per Channel
ISL97682
1.2
1.22
100
1.24
V
mA
PWM GENERATOR
ISL97683
ISL97684
50
50
mA
mA
V IL
V IH
Guaranteed Range for PWM Input Low Voltage
Guaranteed Range for PWM Input High Voltage
1.5
0.8
V
V
F PWMI
DPWM ACC
PWMI Input Frequency Range
Direct PWM Dimming Output Maximum
Resolution
100
85
30,000
Hz
ns
t DPWM_ON_MIN
PWM ACC
PWM HYST
F PWM
Direct PWM Dimming Minimum On-Time
PWM Dimming with Adjustable Dimming
Frequency Output Resolution
PWMI Input Allowable Jitter Hysteresis
Generated PWM Dimming Frequency Range
Direct PWM Mode
250
-0.46
100
8
450
+0.46
30,000
ns
bit
LSB
Hz
V FPWM
Voltage at FPWM pin
R FPWM = 3.3k Ω
1.20
1.22
1.24
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 .
6
FN7689.1
May 16, 2012
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