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SC657 Datasheet(PDF) 4 Page - Semtech Corporation

Part # SC657
Description  Backlight Driver for 5 LEDs with SemPulseTM Interface
PDF  22 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC657 Datasheet(HTML) 4 Page - Semtech Corporation

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4
Electrical Characteristics (continued)
SC657
Parameter
Symbol
Conditions
Min
Typ
Max
Units
x Mode to .5x Mode
Falling Transition Input Voltage
V
TRANSx
I
OUT = 50mA, IBLn = 0mA, VOUT = 3.2V
3.25
V
.5x Mode to x Mode Hysteresis
V
HYSTx
I
OUT = 50mA, IBLn = 0mA, VOUT = 3.2V
250
mV
.5x Mode to 2x Mode
Falling Transition Input Voltage
V
TRANS.5x
I
OUT = 50mA, IBLn = 0mA, VOUT = 4.0V
(4)
3.3
V
Current Sink Off-State
Leakage Current
I
BLn(off)
V
IN = VBLn = 4.2V
0.

µA
Charge Pump Frequency
f
PUMP
V
IN = 3.2V
250
kHz
Output Short Circuit
Current Limit
I
OUT(SC)
OUT pin shorted to GND
60
mA
V
OUT > 2.5V
300
Under Voltage Lockout
V
UVLO-OFF
Increasing V
IN
2.7
V
V
UVLO-HYS
Hysteresis
800
mV
Over-Voltage Protection
V
OVP
OUT pin open circuit, V
OUT = VOVP,
rising threshold
5.7
6.0
V
Over-Temperature
T
OT
Rising temperature
60
°C
OT Hysteresis
T
OT-HYS
20
°C



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