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SC622 Arkusz danych(PDF) 4 Page - Semtech Corporation

Numer części SC622
Szczegółowy opis  LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and SemWireTM Interface
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Producent  SEMTECH [Semtech Corporation]
Strona internetowa  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC622 Arkusz danych(HTML) 4 Page - Semtech Corporation

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SC622
4
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Fault Protection (continued)
Charge Pump
Over-Voltage Protection
V
OVP
VOUT pin open circuit, V
OUT
= V
OVP
rising threshold
5.3
5.7
6.0
V
Undervoltage Lockout
V
UVLO
Decreasing V
IN
2.4
V
V
UVLO-HYS
300
mV
Charge Pump Electrical Specifications
Maximum Total Output
Current
I
OUT(MAX)
V
IN
> 3.4V, V
OUT(MAX)
= 4.0V
400
mA
Flash Current Setting
I
FL
Nominal setting for FL
50
400
mA
Flash Current Accuracy
I
FL_ACC
V
IN
= 3.7V, I
FL
= 400mA, T
A
= 25°C
-15
+15
%
1x Mode to 1.5x Mode
Falling Transition Voltage
V
TRANS1x
I
OUT
= 100mA, V
OUT
= 3.3V
3.37
V
1.5x Mode to 2x Mode
Falling Transition Voltage
V
TRANS1.5x
I
OUT
= 100mA, V
OUT
= 4.5V(2)
3.3
V
Current Sink Off-State
Leakage Current
I
BLn
V
IN
= V
FL
= 4.2V
0.1
1
μA
Pump Frequency
f
PUMP
V
IN
= 3.2V
250
kHz
LDO Electrical Specifications
LDO1 Voltage Setting
V
LDO1
Range of nominal settings
in 100mV increments
2.5
3.3
V
LDO2 Voltage Setting
V
LDO2
Range of nominal settings
in 100mV increments
1.5
1.8
V
LDO1, LDO2 Output
Voltage Accuracy
V
LDO1,
V
LDO2
V
IN
= 3.7V, I
LDO
= 1mA
-3.5
±3
+3.5
%
Line Regulation
ΔV
LINE
LDO1, I
LDO1
= 1mA, V
OUT
= 2.8V
2.1
7.2
mV
LDO2, I
LDO2
= 1mA, V
OUT
= 1.8V
1.3
4.8
Electrical Characteristics (continued)


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