SC908 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC908 Datasheet PDF : 30 Pages
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SC908
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Linear Low Drop-Out (LDO) Regulator (continued)
LDO Line Regulation (9)
LDO LVOUT/LVIN Power Supply
Rejection Ratio
LDO LVOUT/(BAT and LVIN)
Power Supply Rejection Ratio
LDO Output Noise Voltage (9)
LDO Quiescent Current
(I - I ) (4)
LVIN LVOUT
LDO Current Limit
LDO Start-Up Time (5, 10)
LDO Turn-Off Time
Battery Voltage Detector
Battery Detector Minimum
Operating Voltage
Battery Detector Maximum
Operating Voltage
Battery Detector Voltage
Warning, Decreasing
Battery Detector Voltage Fault,
Decreasing
Battery Detector Threshold
Hysteresis, Warning or Fault
ΔV
LVOUT_LINE
PSRR
LLVIN
PSRR
LBAT
V
L_NOISE
I
LQ
IL_LIM
t
SU-LVOUT
t
TO-LVOUT
2.2V ≤ V ≤ 4.2V referenced to 3.7V,
LVIN
I = 1mA, RL1 = 54.9kΩ, RL2 = 39.2kΩ
LVOUT
VLVIN = 3.7VDC with 0.5V P-to-P Ripple,
f ≤ 10kHz, V = 3.7VDC
BAT
V = 1.8V, I = 30mA
LVOUT
LVOUT
V = V = 3.7VDC with 0.5V P-to-P
LVIN
BAT
Ripple, f ≤ 10kHz
V = 1.8V, I = 30mA
LVOUT
LVOUT
10Hz ≤ f ≤ 100kHz
C = 1μF, V = 3.0V
LVOUT
LVOUT
V = 3.7V, I = 50mA
LVIN
LVOUT
V = V = V = 4.2V,
LVIN
LEN
BAT
V = 0V, I = 1mA
VAD
LVOUT
VLVOUT = 0V, VLEN = VBAT
Time from LEN (with V = V ,
SEN
BAT
disregard t ),
SU_REF
VLVOUT from 0V to 95% of final
Time from LEN
(with V = V = 0, t dominates)
VAD
SEN
SU_REF
V from 0V to 95% of final
LVOUT
Time from LEN = 0, V from 100%
LVOUT
to 10% of regulation
V
DET_MINOP
VDET_MAXOP
VWARN
VDET
VDET_HYS
V ≤ V ≤ V DET_MINOP
Battery
DET_MAXOP
RRLBAT = 309kΩ
V ≤ V ≤ V DET_MINOP
Battery
DET_MAXOP
Min
-5
300
4.5
3.21
150
Typ
Max
Units
5
mV
60
dB
60
dB
50
μV
RMS
91
μA
380
450
mA
0.1
ms
0
ms
0.5
ms
2.3
V
V
3.28
3.35
V
2.92
V
200
250
mV
7
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