ltc4002-4.2 Linear Technology Corporation, ltc4002-4.2 Datasheet - Page 9

• Manufacturer Part Number: ltc4002-4.2
• Description: Standalone Li-ion Switch Mode Battery Charger
• Manufacturer: Linear Technology Corporation

PI FU CTIO S
BLOCK DIAGRA
hot temperature or rises above 2.465V at cold temperature,
charging is suspended and the internal timer stops. The
CHRG pin output is not affected during this hold state. To
U
U
COMP
CHRG
U
M3
(DFN/SO-8)
W
90µA
M2
360mV
M1
100µA
Q5
+
–
V
C
CC
SD
25µA
R
R
Q4
I
SLOP
IL
SLOP
GND
I
L
–
+
SD
C/10
STOP
C
PWM
NTC_DISABLE
CLK:
LOGIC
UVLO
4.2V
UV
TEMP
EOC
disable the temperature qualification function, ground the
NTC pin.
NC (Pin 10/NA): No Connect.
RQ
S
R
R
Q
DRIVER
C
C
C
C
C
C
COLD
CA
VA
EOC
HOT
OV
RQ
LB
+
–
+
–
+
–
+
–
+
–
+
–
+
–
–
+
+
–
25mV or 10mV
100mV
4.05V/CELL
2.465V
355mV
50mV
+ –
–
+
4.2V/CELL
2.9V OR 5V
4.62V/CELL
85µA
V
CC
4002 BD
LTC4002
SENSE
GATE
BAT
NTC
9
4002f