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参数资料
| 型号： | DS3988T+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 18/23页 |
| 文件大小： | 0K |
| 描述： | IC CCFL CNTRLR 8CH 48TQFP |
| 标准包装： | 2,000 |
| 类型： | CCFL 控制器 |
| 频率： | 40 ~ 80 kHz |
| 电流 - 电源： | 15mA |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
8-Channel Cold-Cathode
Fluorescent Lamp Controller
Table 4. Control Register 2 (CR2)
BIT
0
1
NAME
UMWP
POSCR0
FUNCTION
User Memory Write Protect.
0 = User Memory Write Access Blocked
1 = User Memory Write Access Permitted
DPWM Oscillator Range Select. When using an external source for the dimming clock, these bits must
be set to match the external oscillator’s frequency. When using a resistor to set the dimming
frequency, these bits plus the external resistor control the frequency.
POSCR1
POSCR0
DIMMING CLOCK (DPWM)
FREQUENCY RANGE (Hz)
K
(k ? ? kHz)
2
POSCR1
0
0
1
1
0
1
0
1
22.5 to 55.0
45 to 110
90 to 220
180 to 440
1
2
4
8
Lamp Sample Rate Select. Determines the feedback sample rate of the LCM inputs
3
4
LSR0
LSR1
LSR1
0
0
1
1
LSR0
0
1
0
1
SELECTED LAMP
SAMPLE RATE
4 Lamp Frequency Cycles
8 Lamp Frequency Cycles
16 Lamp Frequency Cycles
32 Lamp Frequency Cycles
EXAMPLE SAMPLE RATE
IF LAMP FREQUENCY IS
50kHZ
12500Hz
6250Hz
3125Hz
1563Hz
Lamp Disable. Used to disable channels if all 8 are not required for an application.
5
6
7
LD0
LD1
LD2
LD2
0
0
0
0
1
1
1
1
LD1
0
0
1
1
0
0
1
1
LD0
0
1
0
1
0
1
0
1
CHANNELS DISABLED
All Channels Enabled
8
4/8
2/4/8
2/4/6/8
2/4/6/7/8
2/3/4/6/7/8
2/3/4/5/6/7/8
NUMBER OF ACTIVE
LAMP CHANNELS
8
7
6
5
4
3
2
1
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3991 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991V | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VC | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
| DS3991VRC | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost CCFL Controller |
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