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參數(shù)資料
| 型號： | LM27966SQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | White LED Driver with I2C Compatible Interface |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 封裝： | 4 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大小： | 673K |
| 代理商： | LM27966SQ |
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
pin voltage
SCL, SDIO, VIO, RESET pin
voltages
I
Dx
Pin Voltages
-0.3V to 6.0V
-0.3V to (V
IN
+0.3V)
w/ 6.0V max
-0.3V to
(V
POUT
+0.3V)
w/ 6.0V max
Internally Limited
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
J-MAX
)
Storage Temperature Range
Maximum Lead Temperature
(Soldering)
ESD Rating(Note 5)
Human Body Model
150
o
C
-65
o
C to +150
o
C
(Note 4)
2.0kV
Operating Rating
(Notes 1, 2)
Input Voltage Range
LED Voltage Range
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
)
Range(Note 6)
2.7V to 5.5V
2.0V to 4.0V
-30C to +100C
-30C to +85C
Thermal Properties
Juntion-to-Ambient Thermal
Resistance (
θ
JA
), SQA24A Package
(Note 7)
41.3C/W
ESD Caution Notice
tor recommends that all integrated circuits be handled with
appropriate ESD precautions. Failure to observe proper
ESD handling techniques can result in damage to the
device.
National Semiconduc-
Electrical Characteristics
(Notes 2, 8)
Limits in standard typeface are for T
= 25C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V
= 3.6V; V
= V
; VIO = 1.8V V
Dx
= 0.4V; V
= 0.4V; R
= 16.9k
; D
= D
=
Fullscale Current; EN-MAIN, EN-D5 Bits = “1”; C1=C2=1.0μF, C
=C
=1.0μF; Specifications related to output current(s) and
current setting pins (I
Dx
and I
SET
) apply to Main Display and Auxiliary LED. (Note 9)
Symbol
Parameter
3.0V
≤
V
IN
≤
5.5V
EN-AUX= ’0’
3.0V
≤
V
IN
≤
5.5V
EN-AUX = ’1’ and EN-MAIN = EN-D5 = ’0’
Maximum Output Current
Regulation
Main Display and Auxiliary LED
Enabled
(Note 10)
I
Dx-MATCH
LED Current Matching
(Note 11)
R
OUT
Open-Loop Charge Pump Output
Resistance
Gain = 1
V
DxTH
V
Dx
1x to 3/2x Gain Transition
Threshold
RSET = 16.9k
V
HR
Current Source Headroom Voltage
Requirement
(Note 12)
Gain = 3/2
EN-MAIN = EN-D5 and/or EN-AUX= "1"
I
Q
Quiescent Supply Current
Gain = 1.5x, No Load
I
SD
Shutdown Supply Current
All EN-x bits = "0"
V
SET
I
SET
Pin Voltage
2.7V
≤
V
IN
≤
5.5V
I
Dx/
I
SET
Ratio Main Display, DAUX
f
SW
Switching Frequency
t
START
Start-up Time
P
OUT
= 90% steady state
f
PWM
Internal Diode Current PWM
Frequency
Condition
Min
18.2
(-9.5%)
19.2
(-7.7%)
Typ
Max
22.0
(+9.5%)
22.4
(+7.7%)
Units
mA
(%)
mA
(%)
I
Dx
Output Current Regulation
Main Display or Auxiliary LED
Enabled
20.1
20.8
3.2V
≤
V
IN
≤
5.5V
R
SET
= 8.33k
V
LED
= 3.6V
EN-MAIN = EN-D5 = EN-AUX = “1”
30
Dx
mA
30
D
AUX
0.3
2.75
1
1.7
%
Gain = 3/2
V
Dx
Falling
175
mV
I
Dxx
= 95% xI
Dxx
(nom.)
(I
Dxx
(nom)
≈
15mA)
110
mV
2.90
3.4
1.25
3.32
5.4
mA
μA
V
Output Current to Current Set
200
0.89
1.27
250
1.57
MHz
μs
20
kHz
L
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LM27966SQ | 制造商:Texas Instruments 功能描述:LED DRIVER I2C CONTROL POWERWISE |
| LM27966SQ/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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM27966SQX | 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM27966SQX/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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM2796TL | 制造商:Texas Instruments 功能描述:LED DRVR 7Segment 3.3V/5V 18-Pin uSMD T/R |
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