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參數(shù)資料
| 型號： | SC620EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | Octal LED Driver, General Purpose Current Sink with Serial Interface |
| 中文描述： | 八路LED驅(qū)動(dòng)器，通用吸電流的串行接口 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 363K |
| 代理商： | SC620EVB |
Exceeding the speci
fi
cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters speci
fi
ed in the
Electrical Characteristics section is not implied.
Unless otherwise noted, T
A
= +25°C for Typ, -40oC to 85°C for Min and Max, V
IN
= 2.7V to 5.5V, C
IN
= 1
μ
F,
V
F
≤
1.5V
Parameter
Symbol
Condition
Min
Typ
Max
Units
Maximum LED Current Setting
(1)
I
LEDn
25
mA
LED Current Setting Accuracy
(1)
I
LEDn
0.5mA
≤
I
LEDn
≤
5mA,
T
A
= 25oC
5mA < I
LEDn
≤
25mA, V
F
= 3.4V,
V
ILEDn
= 2V, T
A
= 25oC
5mA < I
LEDn
≤
25mA,
T
A
= 25oC
0.5mA
≤
I
LEDn
≤
5mA,
T
A
= 25oC
5mA < I
LEDn
≤
25mA,
T
A
= 25oC
-250
250
μ
A
-5
5
%
Load Regulation
I
LEDn
/
V
F
-2
2
% / V
LED Current Matching Accuracy
(1)
I
LED-to-LED
-150
150
μ
A
-3
3
%
Dropout Voltage
V
DO
I
LEDn
= 25mA
150
mV
Shutdown Current
I
SHDN
EN = GND
0.1
1
μ
A
Current Step Size
I
STEP
Normal Mode
(3)
500
μ
A
Low-Current Mode
(4)
31.25
μ
A
Quiescent Current
I
Q
Standby: EN = V
IN
,
LED1-8 disabled
(2)
60
μ
A
EN = V
IN
, I
LED1-8
= 1.968mA
(4)
720
μ
A
EN = V
IN
, I
LED1-8
= 25mA
(3)
4.5
mA
Absolute Maximum Ratings
Electrical Characteristics
Parameter
Symbol
Maximum
Units
Input Supply Voltage
V
IN
-0.3 to +6.0
V
Pin Voltage - All Other Pins
-0.3 to V
IN
+0.3
V
Short Circuit Duration - All Outputs
t
SC
Inde
fi
nite
s
Operating Ambient Temperature Range
T
A
-40 to +85
°C
Operating Junction Temperature Range
T
J
-40 to +150
°C
Storage Temperature
T
STG
-65 to +150
°C
Peak IR Re
fl
ow Temperature
T
PKG
260
°C
Thermal Resistance - Junction to Ambient
(1)
θ
JA
39
°C/W
ESD Protection Level
(2)
Note:
1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards.
2) Tested according to JEDEC standard JESD22-A114-B
V
ESD
2
kV
2
2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC620
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