參數(shù)資料
型號： LM2793LD
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： Low Noise White LED Constant Current Supply with Dual Function Brightness Control
中文描述： SWITCHED CAPACITOR REGULATOR, 675 kHz SWITCHING FREQ-MAX, DSO10
封裝： LLP-10
文件頁數(shù)： 3/10頁
文件大?。?/td> 211K
代理商： LM2793LD
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Notes 1,
V
IN
V
SD-BRGT
-0.3V to 6.0V
-0.3V to (V
IN
+
0.3V) w/ 6.0V max
Continuous Power Dissipation (Note
4)
Junction Temperature (T
J-MAX-ABS
)
Storage Temperature Range
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 5)
Human Body Model
Machine Model
Internally Limited
150C
-65C to 150C
260C
2kV
200V
Operating Ratings
(Notes 2, 8)
Input Voltage V
IN
V
SD-BRGT
Brightness Adjustment Control
Range of V
SD-BRGT
Junction Temperature Range (T
J
)
Ambient Temperature Range (T
A
)
2.7V to 5.5V
0V to V
IN
0.75V to 2.75V
-30C to +100C
-30C to +85 C
(Note 6)
Thermal Information
Junction-to-Ambient Thermal
Resistance,
LLP-10 Package (
θ
JA
) (Note 7)
55C/W
Electrical Characteristics
Limits in standard typeface are for T
J
= 25C, and limits in
boldface
type apply over the full operating junction temprature
range. Unless otherwise specified: C
1
=C
2
=C
IN
=C
HOLD
=1μF; V
IN
=3.6V; V
SD-BRGT
=3.0V; V
DX
=3.6V
Symbol
Parameter
Conditions
3.3V
≤
V
IN
≤
5.5V
V
DX
= 3.9V
3.0V
≤
V
IN
≤
5.5V
V
DX
= 3.8V
2.7V
≤
V
IN
≤
5.5V
V
DX
= 3.4V
2.5V
≤
V
DX
≤
3.9V
(Note 9)
V
SD-BRGT
= 2.0V
V
SD-BRGT
= 0.75V
I
D-MATCH
I
D1
-to-I
D2
Current Matching
Charge Pump Output
Resistance
Minimum Current Source
Voltage Headroom (V
POUT
-
V
IDx
) (Note 10)
I
Q
Quiescent Supply Current
I
DX
, I
POUT
= 0
2.7V
≤
V
IN
≤
5.5V
V
SD-BRGT
= 0V
Active
V
IN
= 3.0V
Shutdown
V
IN
= 3.0V
SD-BRGT Pin Leakage
Current
f
SW
Switching Frequency
2.7V
≤
V
IN
≤
5.5V
t
START
Startup Time
I
DX
= 90% steady state
(Notes 2, 8)
Min
14.7
13.7
14.7
13.7
14.7
13.7
14.7
13.7
Typ
Max
17.2
17.3
17.2
17.3
17.2
17.3
17.2
17.3
Units
I
DX
Output Current Regulation
15.9
mA
15.9
15.9
15.9
10
0.1
0.3
3.0
%
R
OUT
V
IN
= 2.7V
3.5
V
HR-min
I
DX
= 16mA
400
mV
1.2
2.2
mA
I
SD
Shutdown Supply Current
3
5
μA
ON/OFF
SD-BRGT Pin Thresholds
for Active and Shutdown
Modes
0.70
V
0.25
I
LEAK-SD
17
μA
325
500
30
675
kHz
μs
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of
the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the
Electrical Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
Voltage on the SD-BRGT pin should not exceed 6V.
Note 4:
Thermal shutdown circuitry protects the device from permanent damage. D
1
and D
2
may be shorted to GND without damage.
L
www.national.com
3
相關(guān)PDF資料
PDF描述
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參數(shù)描述
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LM2793LDX 功能描述:IC LED DRIVR WHITE BCKLGT 10-LLP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT
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