Datasheet
LM3658
SNVS328E –MAY 2005–REVISED MARCH 2007
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted, V
CC
(V
CHG_IN
and/or V
USBpwr
) = 5V, V
BATT
= 3.5V. C
CHG_IN
= 1 µF, C
USBpwr
= 1 µF, C
BATT
= 1 µF. Typical
values and limits appearing in normal type apply for T
J
= 25°C. Limits appearing in boldface type apply over T
J
= 0°C to
+85°C.
(1)(2)(3)
Symbol Parameter Conditions Min Typ Max Units
I
CHG
CHG_IN Full-Rate Charge 6V ≥ V
CC
≥ 4.5V
Current Range (see full-rate V
BATT
< V
CC
– V
OK_CHG
50 1000 mA
charge mode description) V
FULL_RATE
< V
BATT
< V
TERM
I
CHG
= K
ISET
/R
ISET
I
CHG
CHG_IN Full Rate Charge R
ISET
= 10kΩ 220 245 270
Current
R
ISET
= 5 kΩ 465 500 535 mA
R
ISET
= 3.3kΩ 700 760 820
K
ISET
Charge Current Set Coefficient 6V ≥ V
CC
≥ 4.5V
I
CHG
= K
ISET
/R
ISET
(see full-rate V
BATT
< V
CC
– V
OK_CHG
2500 AΩ
charge mode description) V
FULL_RATE
< V
BATT
< V
TERM
V
ISET
Charge Current Set Voltage 6V ≥ V
CC
≥ 4.5V
V
BATT
< V
CC
– V
OK_CHG
2.5 V
V
FULL_RATE
< V
BATT
< V
TERM
I
USB_L
USB Full-Rate Charge Low
80 90 100 mA
Current
I
USB_H
USB Full-Rate Charge High
400 450 500 mA
Current
I
PREQUAL
Pre-Qualification Current V
BATT
= 2V, for both AC adapter and USB 35 45 55 mA
V
FULL_RA
Full-Rate Qualification V
BATT
rising, transition from pre-qualification to full-
2.9 3.0 3.1 V
TE
Threshold rate charging
Full Rate Hysteresis V
BATT
falling 50 60 70 mV
I
EOC
End-of-Charge Current, Percent 6V ≥ V
CC
≥ 4.5V
from Full-Range Current V
BATT
< V
CC
– V
OK_CHG
7 9 11 %
V
FULL_RATE
< V
BATT
< V
TERM
I
TOPOFF
Minimum Top-Off Charge 6V ≥ V
CC
≥ 4.5V
Current V
BATT
< V
CC
– V
OK_CHG
1.25 2.5 3.75 %
V
BATT
= V
TERM
V
RESTART
Restart Threshold Voltage V
BATT
falling, transition from EOC to pre-
3.94 4.0 4.07 V
qualification mode
V
TL
Battery Temperature Sense
Comparator Low-Voltage 0.46 0.49 0.52 V
Threshold
V
TH
Battery Temperature Sense
Comparator High-Voltage 2.44 2.49 2.54 V
Threshold
I
TSENSE
Battery Temperature Sense
94 100 106 µA
Current
T
REG
Regulated Junction
120 °C
Temperature
T
SD
Thermal Shutdown
165 °C
Temperature
V
TLDO
LDO mode detection threshold TS pin voltage for entry into LDO mode.
3.95 4.0 v
For LM3658SD-B only
V
LDO
LDO Mode Regulation 6V ≥ V
CHG_IN
≥ 4.5V
T
S
= Floating -3.0 4.2 +3.0 %
I
BATT
= 100mA
DETECTION AND TIMING
T
POK
Power OK Deglitch Time V
BATT
< V
CC
– V
OK_CHG
40 60 100 ms
T
PREQUAL
Pre-Qualification Timer 27 30 33 mins
T
PQ_FULL
Deglitch Time for Pre-
Qualification to Full-Rate 270 300 330 ms
Charge Transition
T
FULL_PQ
Deglitch Time for Full-Rate to
270 300 330 ms
Pre-Qualification Transition
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