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參數(shù)資料
| 型號： | LP3958TL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Lighting Management Unit with High Voltage Boost Converter |
| 中文描述： | LED DISPLAY DRIVER, PBGA25 |
| 封裝： | 2.54 X 2.54 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, MICRO SMD PACKAGE-25 |
| 文件頁數(shù)： | 9/28頁 |
| 文件大?。?/td> | 1091K |
| 代理商： | LP3958TL |
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Magnetic Boost DC/DC Converter
(Continued)
MAGNETIC BOOST DC/DC CONVERTER ELECTRICAL CHARACTERISTICS
Symbol
I
LOAD
Parameter
Conditions
Min
Typ
Max
Units
Maximum Continuous Load
Current
Output Voltage Accuracy
(FB Pin)
Switch ON Resistance
PWM Mode Switching
Frequency
Frequency Accuracy
3.0V = V
IN
V
OUT
= 18V
3.0V
≤
V
IN
≤
5.5V
V
OUT
= 18V
I
SW
= 0.5A
RT = 82 k
70
mA
V
OUT
3.5
+3.5
%
RDS
ON
f
PWM
0.15
0.3
1.0
MHz
RT = 82 k
7
9
+7
+9
%
t
PULSE
Switch Pulse Minimum
Width
Startup Time
no load
45
ns
t
STARTUP
Boost startup from STANDBY to V
OUT
= 18V, no load
15
ms
I
MAX
SW Pin Current Limit
800
1150
mA
BOOST STANDBY MODE
User can set the Boost Converter to STANDBY mode by
writing the register bit EN_BOOST low. When EN_BOOST is
written high, the converter starts for 20ms in low current
PWM mode and then goes to normal PWM mode. All LED
outputs are off during the 20ms delay to ensure smooth
startup.
BOOST OUTPUT VOLTAGE CONTROL
User can control the boost output voltage by Boost Output
8-bit register.
Boost Output [7:0]
Register 0DH
Bin
0000 1000
0000 1001
0000 1010
0000 1011
0000 1100
0000 1101
0000 1110
0000 1111
0001 0000
0001 0001
0001 0010
Boost Output
Voltage (typical)
Dec
8
9
10
11
12
13
14
15
16
17
18
8.0V
9.0V
10.0V
11.0V
12.0V
13.0V
14.0V
15.0V
16.0V
17.0V
18.0V
If register value is lower than 8, then value of 8 is used
internally.
If register value is higher than 18, then value of 18 is used
internally.
Boost Output Voltage Control
20175578
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3958TL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3958TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter |
| LP3958TLX/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP395Z | 功能描述:兩極晶體管 - BJT RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| LP395Z | 制造商:Texas Instruments 功能描述:POWER TRANSISTOR TO-92-3 395 |
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