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SC620 Datasheet(PDF) 2 Page - Semtech Corporation

Part # SC620
Description  Octal LED Driver, General Purpose Current Sink with Serial Interface
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

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Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified 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, VIN = 2.7V to 5.5V, CIN = 1μF, ∆VF ≤ 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
-250
250
μA
5mA < I
LEDn ≤ 25mA, VF = 3.4V,
V
ILEDn = 2V, TA = 25ºC
-5
5
%
Load Regulation
∆I
LEDn/ ∆VF
5mA < I
LEDn ≤ 25mA,
T
A = 25ºC
-2
2
% / V
LED Current Matching Accuracy(1)
I
LED-to-LED
0.5mA ≤ I
LEDn ≤ 5mA,
T
A = 25ºC
-150
150
μA
5mA < I
LEDn ≤ 25mA,
T
A = 25ºC
-3
3
%
Dropout Voltage
V
DO
I
LEDn = 25mA
150
mV
Shutdown Current
I
SHDN
EN = GND
0.1
1
μA
Current Step Size
I
STEP
Normal Mode(3)
500
μA
Low-Current Mode(4)
31.25
μA
Quiescent Current
I
Q
Standby: EN = V
IN,
LED1-8 disabled(2)
60
μA
EN = V
IN, ILED1-8 = 1.968mA
(4)
720
μA
EN = V
IN, ILED1-8 = 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
Indefinite
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 Reflow Temperature
T
PKG
260
°C
Thermal Resistance - Junction to Ambient(1)
θ
JA
39
°C/W
ESD Protection Level(2)
V
ESD
2kV
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
2
© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC620


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