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参数资料
| 型号： | ISL97683IRTZ |
| 厂商： | Intersil |
| 文件页数： | 4/17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
Pin Descriptions
PIN
1
2
3
4
ISL97682
AGND
COMP
RSET
FSW
ISL97683
AGND
COMP
RSET
FSW
ISL97684
AGND
COMP
RSET
FSW
DESCRIPTION
Analog Ground for precision circuits
External Compensation Pin
Resistor connection for setting LED current, (see Equation 2 for calculating the ILEDpeak)
FSW = 0 ~ 0.11 * VDC, Boost Switching Frequency = 600kHz with phase shift and PFM mode enabled.
FSW = 0.34 * VDC ~ 0.44 * VDC, Boost Switching Frequency = 600kHz with phase shift and PWM mode
enabled.
FSW = 0.53 * VDC ~ 0.63 * VDC, Boost Switching Frequency = 1MHz with phase shift and PWM mode
enabled.
FSW = 0.86 * VDC ~ VDC, Boost Switching Frequency = 1MHz with phase shift and PFM mode enabled.
5
6
7
PWMI
EN
VIN
PWMI
EN
VIN
PWMI
EN
VIN
PWM brightness control pin.
Enable, can be tied directly to VIN if the system lacks of I/O
LED and Driver Supply Voltage. LED supply and Driver supply can be separated if high voltage application
is needed and dual supplies are available
8
FPWM/
FPWM/
FPWM/
External PWM dimming with frequency modulation or Direct PWM dimming without frequency
DirectPWM DirectPWM DirectPWM modulation.
With a resistor connected to ground, the dimming frequency will be set by the Setting Resistor.
When this pin is floating, the part enters Direct PWM mode such that the dimming follows the input PWM
signal without frequency modulation.
9
10
11
12
13
14
15
16
LX
PGND
VDC
OVP
CH1
NC
CH2
NC
LX
PGND
VDC
OVP
CH1
CH2
CH3
NC
LX
PGND
VDC
OVP
CH1
CH2
CH3
CH4
Input to boost switch
Power ground (LX, C IN , and C OUT Power return)
De-couple capacitor for internally generated 5V supply
Overvoltage protection input
Input 1 to current source, CH, and monitoring
Input 2 to current source, CH, and monitoring (ISL97682 is No Connect)
Input 3 to current source, CH, and monitoring
Input 4 to current source, CH, and monitoring (ISL97682, ISL97683 are No Connect)
4
FN7689.1
May 16, 2012
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