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SC908 Datasheet(PDF) 7 Page - Semtech Corporation

Part # SC908
Description  Power Management IC for Single-Cell Li-Ion Devices
PDF  30 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC908 Datasheet(HTML) 7 Page - Semtech Corporation

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



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