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参数资料
| 型号： | DS3991Z+T&R/PP |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR CCFL PUSH-PULL 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | CCFL 控制器 |
| 频率： | 40 ~ 80 kHz |
| 电流 - 电源： | 5mA |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | 90-3991V+001 |
Low-Cost CCFL Controller
Pin Description
PIN
NAME
I/O
FUNCTION
BRIGHT Slope Select. This digital input determines the slope of the BRIGHT input when
1
SLOPE
I
an analog DC voltage is used to control lamp brightness (PWM_EN = 0).
SLOPE = 0: positive slope (0V = minimum brightness, 3.3V = 100% brightness)
SLOPE = 1: negative slope (0V = 100% brightness, 3.3V = minimum brightness)
2, 3, 4
VCC
Connect to Voltage Supply. These pins should be connected to the voltage supply pin, VCC.
5
LOSC
O
Lamp Oscillator Resistor Adjust. A resistor (R LOSC ) to ground on this pin sets the frequency
of the lamp oscillator (F LOSC ). (R LOSC x F LOSC = 4.0E9).
Burst-Dimming PWM Oscillator Resistor Adjust/PWM Digital Input. If PWM_EN = 0, a resistor
6
POSC/
PWM
O/I
(R POSC ) to ground on this pin sets the frequency (F POSC ) of the burst-dimming PWM
oscillator (R POSC x F POSC = 4.0E6). If PWM_EN =1, a digital 80Hz to 300Hz PWM signal at
this input controls the lamp brightness.
7
BRIGHT
I
Lamp-Brightness Control. If PWM_EN = 0, a 0V to 3.3V analog DC voltage at this input
controls the brightness of the lamp.
PWM Lamp-Brightness Control Enable. This digital input determines whether the BRIGHT or
8
PWM_EN
I
POSC/PWM input is used to control lamp brightness.
PWM_EN = 0 = PWM disabled (analog DC voltage applied at the BRIGHT input)
PWM_EN = 1 = PWM enabled (digital PWM signal applied at the POSC/PWM input)
9
10
11
12
13
14
GA
GB
LCM
OVD
GND
VCC
O
O
I
I
MOSFET Gate Drive A. Drives a logic-level power MOSFET.
MOSFET Gate Drive B. Drives a logic-level power MOSFET.
Lamp Current Monitor Input. Lamp current is monitored by a resistor placed in series with
the low-voltage side of the lamp.
Overvoltage Detection Input. Lamp voltage is monitored by a capacitor divider placed on
the high-voltage side of the lamp.
Signal Ground
Voltage Supply, 4.5V to 5.5V
Supply Voltage Monitor High. The DC inverter-supply voltage is monitored by an external
15
SVMH
I
resistor divider. The resistor-divider should be set such that it provides 2V at this pin for the
maximum allowable range of the DC inverter supply. Pulling this input above 2V turns the
lamps off and resets the controller. Connect to GND if not used.
Supply Voltage Monitor Low. The DC inverter-supply voltage is monitored by an external
16
SVML
I
resistor divider. The resistor-divider should be set such that it provides 2V at this pin for the
minimum allowable range of the DC inverter supply. Pulling this input below 2V turns the
lamps off and resets the controller. Connect to VCC if not used.
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3992 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Two-Channel, Push-Pull CCFL Controller |
| DS3992Z+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| DS3992Z-09N | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Two-Channel, Push-Pull CCFL Controller |
| DS3992Z-09N+ | 功能描述:显示驱动器和控制器 2Ch Push-Pull CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel |
| DS3992Z-09N+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Two-Channel, Push-Pull CCFL Controller |
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