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SC615AEVB 数据表(PDF) 3 Page - Semtech Corporation

部件名 SC615AEVB
功能描述  Charge Pump Flash LED Driver
PDF  12 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC615AEVB 数据表(HTML) 3 Page - Semtech Corporation

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© 2008 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC615A
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Quiescent Current
I
Q
FLASH high
3.4
5
mA
FLASH low, CTRL high
2.0
4.5
mA
FLASH low, CTRL low
0.1
2
μA
Flash Mode Pulse
Duration(2)
t
FLASH
3.3V < V
IN < 4.2V
I
OUT = 500mA, VOUT > 2.8V
500
ms
Flash Mode
Start-Up Time(2)
t
F-ST
t = 0 when FLASH goes high to
I
OUT = 90% of final value
1ms
Spotlight Mode
Start-Up Time(2)
t
S-ST
t = 0 when CTRL goes high to
I
OUT = 90% of final value
1ms
Oscillator Frequency
f
OSC
Device Enabled
250
kHz
Oscillator
Frequency Accuracy
Δf
OSC
-15
15
%
Short-Circuit Output
Current Limit
I
SC
V
OUT = 0V
465
mA
Input Current Limit
I
LIMIT
3.3V < V
IN < 4.2V
2.1
A
V
IN = 3.7V, VOUT = 3.7V, TA = 25°C
1.38
1.53
Over-Temperature
Protection(2)
T
OT
150
°C
Hysteresis
10
°C
Logic Input
High Threshold
V
IH
FLASH, CTRL
1.5
V
Logic Input
Low Threshold
V
IL
FLASH, CTRL
0.4
V
Logic Input
High Current
I
IH
FLASH
1
20
35
μA
CTRL
2
40
70
μA
Logic Input
Low Current
I
IL
FLASH, CTRL
0.1
2
μA
ISET Ripple Voltage(2)
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) Guaranteed by design - not tested in production.
Electrical Characteristics (Cont.)



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