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参数资料
| 型号： | CAT4004AHU2-GT3B |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/11页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 4CH EZ DIM I/F 8DFN |
| 标准包装： | 3,000 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 电源电压： | 2.4 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN 裸露焊盘 |
| 供应商设备封装： | 8-uDFN（2x2） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
CAT4002A, CAT4004A
Table 6. PIN DESCRIPTIONS
Name
EN/DIM
GND
LED1
LED2
LED3
LED4
RSET
VIN
TAB
Pin Function
Function
Device enable (active high) and dimming control
Ground reference
LED1 cathode terminal
LED2 cathode terminal
LED3 cathode terminal (CAT4004A only)
LED4 cathode terminal (CAT4004A only)
Connect external RSET resistor to set the LED current
Device supply input, connect to battery or supply
Connect to GND on the PCB (CAT4004A only)
VIN is the supply pin for the charge pump. A small 1 m F
ceramic bypass capacitor is required between the VIN pin
and ground near the device. The operating input voltage
range is from 2.5 V to 5.5 V. Whenever the input supply falls
below the under ? voltage threshold (2.0 V), all the LED
channels are disabled and the device enters shutdown mode.
EN/DIM is the enable and one wire dimming input for all
LED channels. Levels of logic high and logic low are set at
1.3 V and 0.4 V respectively. When EN/DIM is initially
taken high, the CAT400XA becomes enabled and the LED
channel current is set to the full scale according to the
resistor R SET . To place the device into “zero current”
shutdown mode, the EN/DIM pin must be held low for 3 ms
typical.
Block Diagram
V IN
LED1 to LED4 provide the internal regulated current for
each of the LED cathodes. There pins enter a high
impedance zero current state whenver the device is placed
in shutdown mode.
RSET is connected to the resistor (R SET ) to set the full scale
current for the LEDs. The voltage at this pin is regulated to
0.6 V. The ground side of the external resistor should be star
connected back to the GND of the PCB. In shutdown mode,
the RSET input becomes high impedance.
GND is the ground reference for the device. The pin must be
connected to the ground plane on the PCB.
TAB (CAT4004A only) is the exposed pad underneath the
package. For best thermal performance, the tab should be
soldered to the PCB and connected to the ground plane.
VIN
RSET
Undervoltage
Lockout
Reference
Voltage
Current
Setting DAC
EN/DIM
Serial
Interface
Register
4 Current Sink
Regulators
100 k W
GND
Figure 15. CAT4004A Functional Block Diagram
http://onsemi.com
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT4004BHU2-GT3 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Constant Current Programmable LED Driver with 32 Dimming Levels |
| CAT4004VP2-GT3 | 功能描述:LED照明驱动器 LED Driver,4 Chan EZ Dim I/F RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| CAT4004VP2-T3 | 功能描述:LED照明驱动器 4-Ch Constant Curr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| CAT4008 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:8-Channel Constant Current LED Driver |
| CAT4008V-T1 | 功能描述:LED照明驱动器 LED Driver 8 Chan 4-wire I/F RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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