SC802 Datasheet, PDF (4/16 Pages) Semtech Corporation – Fully Integrated Lithium-Ion Battery Charger System with Timer

SC802/SC802A
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless otherwise noted: VCC = 4.75V - 5.25V
Parameter
Symbol
Conditions
25^oC
T_A
Units
(-40^oC to +85^oC)
Min Typ Max Min Max
EN-NTC Thresholds
V T_NTCDIS
SC802 Disable
<1
0.5
1.1
V
V T_NTCH
NTC Hot Vth, VCC = 5V
1.41 1.5 1.59 1.4
1.6
V
28.2 30 31.8 28
32
%
V T_NTCC
NTC Cold Vth, VCC = 5V 3.62 3.75 3.88 3.6
3.9
V
Timer Disable Threshold
Internal Timer Select
Ext RTIME Voltage
Pre-Charge Fault Time-out
Confidential VTNTCEN
V T_NTHYS
VT_TIMER
VT_INTTS
V_RTIME
T_PreQF
72.4 75 77.6 72
NTC Enable, VCC = 5V
4.22 4.5 4.58 4.2
84.4 90 91.6 84
Hot/Cold Vth hysteresis
50
V_RTIME < VT_TIMER Disables
Timer
1
0.7
VCC-V_RTIME < VT_INTTS
1.5
selects internal timer
RTIME tied through 36.5kΩ
1.5
1.4
to GND
RTIME tied through 36.5kΩ
50
to GND
RTIME tied to VCC
45
-35%
78
4.6
92
1.1
1.6
+35%
%
V
%
mV
V
V
V
min
Complete Charge Time-out
T_QCOMP RTIME tied through 36.5kΩ
3.3
hr
to GND
RTIME tied to VCC
3
-35% +35%
CHRGB Charge LED On
V_CHRGB
Load = 5mA
0.5
1
V
CHRGB Charge LED Off
I_CHRGB
Leakage Current, V = 5V
1
µA
CPB LED On
V_CPB
Load = 5mA
0.5
1
V
CPB LED Off
I_CPB
Leakage Current, V = 5V
1
µA
BIPB, VPRGM Inputs
VIH
1.8
V
VIL
0.4
V
 2005 Semtech Corp.
Confidential Proprietary
4
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