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參數(shù)資料
| 型號(hào)： | LP55271 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| 中文描述： | 微小的LED照相機(jī)閃光燈和4的I2C可編程性，連接測(cè)試和音頻同步發(fā)光二極管驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 14/21頁(yè) |
| 文件大小： | 826K |
| 代理商： | LP55271 |
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Audio Synchronization
(Continued)
Audio Input Threshold Setting
Threshold[3:0]
0000
0001
0010
*
*
1110
1111
Threshold Level, mV (typical)
Disabled
0.2
0.4
*
*
2.5
2.7
Typical Gain Values vs. Audio Input Amplitude
Audio Input Amplitude mV
P-P
0 to 10
0 to 20
0 to 40
1 to 85
3 to 170
5 to 400
10 to 800
20 to 1600
Gain Value dB
0
-6
-12
-18
-24
-31
-37
-46
Input Signal Gain Control
GAIN_SEL[2:0]
000
001
010
011
100
101
110
111
Gain dB
0
-6
-12
-18
-24
-31
-37
-46
Refreshing Frequency
SPEED_CTRL[1:0]
Refreshing Rate Hz
FASTEST
00
01
10
11
15
7.6
3.8
Logic Interface Characteristics
Limits in standard typeface are for T
= 25
o
C. Limits in
boldface
type apply over the operating ambient temperature range
(-30
o
C
<
T
A
<
+85
o
C). Unless otherwise noted, specifications apply to the LP55271 Block Diagram with: V
= 3.6V, C
=
10 μF, C
OUT1
= 10 μF, C
OUT2
= 10 μF, C
VDDIO
= 100 nF, C
VREF
= 100 nF, C
VDDA
= 4.7 μF, C
VDD1
= 100 nF, C
VDD2
= 100
nF, L
1
= 4.7 μH (Note 9)
Symbol
Parameter
Condition
Logic Inputs SCL and FLASH_SYNC
V
IL
Input Low Level
V
DD_IO
= 1.65V to V
DD1,2
V
IH
Input High Level
I
I
Input Current
f
SCL
SCL Pin Clock Frequency
Logic Input NRST
V
IL
Input Low Level
V
DD_IO
= 1.65V to V
DD1,2
V
IH
Input High Level
I
I
Input Current
t
NRST
Reset Pulse Width
Logic Input/Output SDA
V
OL
Output Low Level
I
OUT
= 3 mA
I
L
Output leakage current
V
OUT
= 2.8V
Min
Typical Max
Unit
0.2 x V
DD_IO
V
V
μA
kHz
0.8 x V
DD_IO
-1.0
1.0
400
0.5
V
V
μA
μs
1.2
-1.0
10
1.0
0.3
0.5
1.0
V
μA
L
www.national.com
14
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| LP5527 | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP5527TL | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP5527TLX | Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55281 | Quad RGB Driver |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP55271TL | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55271TL/NOPB | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP55271TLX | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55271TLX/NOPB | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP5527TL | 制造商:Texas Instruments 功能描述:DRIVER FLASH LED I2C POWERWISE |
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