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SC824 Datasheet(PDF) 4 Page - Semtech Corporation

Part # SC824
Description  Single-cell Li-Ion Charger Tri-Mode with Timer and NTC
PDF  29 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC824 Datasheet(HTML) 4 Page - Semtech Corporation

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SC824
4
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Battery Leakage Current
lBAT
V0
V
BAT
= V
CV
, V
VIN
= 0V, V
EN_NTC
= 0V
0.1
1
μA
lBAT
DIS
V
BAT
= V
CV
, V
VIN
= 5V, V
EN_NTC
= 0V
0.1
1
μA
lBAT
MON
V
BAT
= V
CV
, V
EN_NTC
= 2.3V,
V
RTIME
= 0V and charging terminated
0.1
1
μA
IPRGM Programming Resistor
R
IPRGM
2.05
29.4
kΩ
I
BAT
Fast-Charge Current, adapter mode
or USB High Power mode
I
FQ
R
IPRGM
= 2.94kΩ, VT
PreQ
< V
BAT
< V
CV
R
IPRGM
= 4.42kΩ, VT
PreQ
< V
BAT
< V
CV
643
427
694
462
745
497
mA
USB Low Power mode Fast-Charge
current
I
FQ_Low
R
IPRGM
= 2.94kΩ, VT
PreQ
< V
BAT
< V
CV
R
IPRGM
= 4.42kΩ, VT
PreQ
< V
BAT
< V
CV
105
69
139
92
173
116
mA
I
BAT
Pre-Charge Current
I
PreQ
R
IPRGM
= 2.94kΩ, 1.8V < V
BAT
< VT
PreQ
R
IPRGM
= 4.42kΩ, 1.8V < V
BAT
< VT
PreQ
105
69
139
92
173
116
mA
I
BAT
Termination Current
I
TERM
R
IPRGM
= 2.94kΩ, V
BAT
= V
CV
R
IPRGM
= 4.42kΩ, V
BAT
= V
CV
59
38
69
46
80
55
mA
VIN - BAT Dropout Voltage
V
DO
I
BAT
= 700mA, 0°C ≤ T
J
≤ 125°C
0.4
0.6
V
IPRGM Fast-charge Regulated Voltage
V
IPRGM_FQ
V
VIN
= 5.0V, VT
PreQ
< V
BAT
< V
CV
2.04
V
IPRGM Pre-charge Regulated Voltage
V
IPRGM_PQ
V
BAT
< VT
PreQ
0.408
V
IPRGM Termination Threshold Voltage
VT
IPRGM_TERM
V
BAT
= V
CV
0.204
V
VIN USB Modes Under-Voltage Load
Regulation Limiting Voltage
V
UVLR
5mA ≤ VIN supply current limit ≤
500mA, V
MODE
= 2V,
R
IPRGM
= 2.94kΩ (694mA)
4.40
4.51
4.70
V
Thermal Limiting Threshold
Temperature
T
TL
130
°C
Thermal Limit Rate
i
T
T
J
> T
TL
-50
mA/ °C
VSYS Output Voltage
V
VSYS
V
VIN
≥ 5V, I
VSYS
≤ 1mA
4.6
V
VSYS Output Current
I
VSYS
1mA
EN_NTC Thresholds
RT
NTC_DIS
Charger Disable/Reset (Falling)
9
10
11.5
%V
VSYS
RT
NTC_HF
NTC Hot (Falling)
29
30
31
%V
VSYS
RT
NTC_CR
NTC Cold (Rising)
74
75
76
%V
VSYS
RT
NTC_NBR
No-Battery Mode select (Rising)
94
95
96
%V
VSYS
EN_NTC Hysteresis
VT
NTC_HYS
V
VIN
= 5V
45
mV
EN_NTC Disable/Reset Hold Time (3)
t
NTC_DIS_H
Momentary disable resets charger
500
ns
Electrical Characteristics (continued)



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