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SC605EVB Folha de dados(PDF) 3 Page - Semtech Corporation

Nome de Peças SC605EVB
Descrição Electrónicos  Charge Pump Flash LED Driver
PDF  12 Pages
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Fabricante Electrônico  SEMTECH [Semtech Corporation]
Página de início  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC605EVB Folha de dados(HTML) 3 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC605
Electrical Characteristics (Cont.)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Flash Mode -
ISET Reference Voltage
V
ISET
FLASH high, R
ISET = 0.5W,
3.3V < V
IN < 4.2V, 2.8V < VOUT < 4.25V
230
250
270
mV
Spotlight Mode -
ISET Reference Voltage
V
ISET
FLASH low, CTRL0 high, CTRL1 high
3.0V < V
IN < 4.5V, 2.8V < VOUT < 4.5V
85
100
115
FLASH low, CTRL0 low, CTRL1 high
3.0V < V
IN < 4.5V, 2.8V < VOUT < 4.5V
60
75
90(3)
FLASH low, CTRL0 high, CTRL1 low
3.0V < V
IN < 4.5V, 2.8V < VOUT < 4.5V
35
50
65(3)
Quiescent Current
I
Q
FLASH High
3.4
5
mA
FLASH low, CTRL0 and/or CTRL1 High
2.0
4.5
mA
FLASH low, CTRL0 low, CTRL1 Low
0.1
2
µA
Flash Mode
Pulse Duration (4)
t
FLASH
3.3V < V
IN < 4.2V
I
OUT = 500mA
500
ms
Flash Mode
Start-Up Time (4)
t
F-ST
from t = 0 when FLASH goes high to
I
OUT = 90% of final value
1
ms
Spotlight Mode
Start-Up Time (4)
t
S-ST
from t = 0 when CTRL0 and/or CTRL1 transi-
tion high to I
OUT = 90% of final value
1
ms
Oscillator Frequency
f
OSC
Device Enabled
250
kHz
Oscillator Frequency
Accuracy
D
f
OSC
-15
15
%
Short-Circuit Ouput
Current Limit
I
SC
V
OUT = 0V
465
mA
Input Current Limit
I
LIMIT
3.3V < V
IN < 4.2V
1.0
2.1
A
V
IN = 3.7V, VOUT = 3.7V, TA = 25°C
1.38
1.53
Over-Temperature
Protection (4)
T
OT
150
°C
Hysteresis
10
°C
Logic Input High Threshold
V
IH
FLASH, CTRL0, CTRL1
1.5
V
Logic Input Low Threshold
V
IL
FLASH, CTRL0, CTRL1
0.4
V
Logic Input High Current
I
IH
FLASH, CTRL0, CTRL1
1
20
35
µA
Logic Input Low Current
I
IL
FLASH, CTRL0, CTRL1
0.1
2
µA
ISET Ripple Voltage(4)
V
PP
Spotlight Mode, I
OUT = 200mA
25
mV
Flash Mode, I
OUT = 500mA
100
Notes:
(1) V
OUT required by the typical LED at this current.
(2) Values do not overlap with the next higher spotlight mode for any single device. Expect Spotlight Modes to be separated by about 50mA.
(3) Values do not overlap with the next higher spotlight mode for any single device. Expect Spotlight Modes to be separated by about 25mV.
(4) Guaranteed by design - not tested in production.



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