SC802IMLTRT Semtech, SC802IMLTRT Datasheet - Page 14

• Manufacturer Part Number: SC802IMLTRT
• Description: IC, BATTERY CHARGER, 1A, MLPQ-16
• Manufacturer: Semtech

Specifications of SC802IMLTRT

• Battery Type: Li-Ion, Li-Polymer
• Input Voltage: 14V
• Battery Charge Voltage: 4.2V
• Charge Current Max: 1A
• Battery Ic Case Style: MLPQ
• No. Of Pins: 16
• No. Of Series Cells: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

State Diagram
Over Voltage or Under Voltage will
regardless of charger state. Over
Yes
disable (and reset) the SC802/A,
Temperature will turn off output
Yes
but preserve charger state.
V
V
VOUT
VOUT
Float Charge Mode
Start LDO Mode
Monitor Mode
CHRGB High Z
I
VOUT is off
VOUT
V
< V
Yes
< V
VOUT
CV
CV
< I
= V
- VT
- VT
TERM
CV
ReQ
ReQ
?
?
?
Yes
Yes
© 2008 Semtech Corporation
VT
Soft Start CC Mode
Float Charge Mode
Yes
UVLO
CHRGB High Z
V
I
t > T
CHRGB Low
VOUT
Yes
t > T
BIPB = Low?
VOUT
V
I
Regulation
VOUT
Enabled?
Enabled?
Start CV
VOUT
Charger
Soft Start
< V
Timer
QCOMP
< I
QCOMP
= V
= I
VCC
= V
TERM
Yes
FQ
CV
Yes
< VT
CV
?
?
?
?
OVP
Yes
Yes
t > T
CHRGB blinks at 0.5Hz
Re-cycle EN or VCC
Start Pre-Charge
Charge resumes when NTC
Shutdown Mode
CHRGB High Z
V
V
V
Yes
V
NTC Temperature Fault
CHRGB blinks at 0.5Hz
PreQF
EN_NTC
EN_NTC
VOUT
Timeout Fault
Start Timer
Yes
CC = Constant Current
VOUT
CV = Constant Voltage
Temperature is valid
VOUT off
Pre-Charge
CPB Low
Enabled?
I
Cleared by
VOUT
Timer
Timer is frozen
> VT
= T
> 2.8V or
> RT
< RT
SC802/SC802A
= I
QCOMP
FQ
PreQ
NTC_HF
NTC_CR
?
/ 4 ?
× V
× V
VCC
VCC
or
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