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參數(shù)資料
| 型號： | LP3936SLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| 中文描述： | LED DISPLAY DRIVER, QCC32 |
| 封裝： | 4.5 X 5.5 MM, 0.80 MM HEIGHT, 0.50 PITCH, CSP-32 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大小： | 520K |
| 代理商： | LP3936SLX |
I
2
C Compatible Interface
I
2
C Timing Parameters
V
DD1, 2
= 3.0V to 4.5V, V
DD_IO
= 1.8V to V
DD1, 2
(Continued)
Symbol
Parameter
Limits
Units
Min
0.6
1.3
600
600
300
100
Max
1
2
3
4
5
6
7
8
9
10
C
b
Hold Time (repeated) START Condition
Clock Low Time
Clock High Time
Setup Time for a Repeated START Condition
Data Hold Time
Data Setup Time
Rise Time of SDA and SCL
Fall Time of SDA and SCL
Set-Up Time for STOP Condition
Bus Free Time between a STOP and a START Condition
Capacitive Load for Each Bus Line
Note:
Data guaranteed by design.
μs
μs
ns
ns
ns
ns
ns
ns
ns
μs
pF
900
20 + 0.1C
b
15 + 0.1C
b
600
1.3
10
300
300
200
A/D Converter for Ambient Light Measurement
Electrical Characteristics
Symbol
V
IN RANGE
Parameter
Conditions
Min
Typ
1.23
2.46
±
1
Max
Units
V
V
LSB
LSB
LSB
Hz
Input Voltage
AD Output: 00h
AD Output: FFh
DNL
GE
PSS
f(conv)
Differential Non-Linearity
Gain Error
Power Supply Sensitivity
Conversion Rate
–1.5
5
+1.5
+5
3.1V
≤
V
DD
≤
4.2V
Without Averaging
With Averaging
(64 samples)
±
1/2
217
3.4
Hz
t
STARTUP
I
AIN
I
AREF
R
AREF
Startup Time
Input Current
Maximum Output Current
AREF Output Resistance
100
±
0.1
200
110
ms
μA
μA
1.23
<
AIN
<
2.6V
AREF Output Current Sink
ADC output AIN[7:0] can be read from address 0CH after startup time. Overflow bit can be read from bit D7 in address 0BH. The
overflow bit indicates that input voltage exceeds the input voltage range of the ADC. The ADC output value in this case is FFH.
When averaging is on, the overflow is high, if any of the 64 conversion results in the averaging period overflows. Thus the
averaged result may be considerably below maximum and the overflow can still be high, if the input signal is noisy.
Examples for optical sensor are photodiode SHF2400 and phototransistor SFH3410 from Osram or BSC 3216 G1 optical sensor
from TDK.
ADC can be used for temperature measurement with a thermistor. It enables temperature compensated LED driving.
If ADC is not used, it should be disabled by writing en_ambadc bit low. AIN and AREF pins can be left unconnected
L
www.national.com
11
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| LP3936SLX/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 |
| LP3937ILQ-AL | 制造商:Texas Instruments 功能描述:Electronic Component |
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