LTC4061 Datasheet, PDF (8/20 Pages) Linear Technology – Standalone Linear Li-lon Battery Charger with Thermistor Input

LTC4061
PI FU CTIO S
resistor, R_PROG, to ground. When charging in constant
current mode, this pin servos to 1V. The voltage on this
pin can be used to measure the charge current using the
following formula:
I_BAT
=
V_PROG
R_PROG
• 1000
V_CC (Pin 10): Positive Input Supply Voltage. Provides
power to the battery charger. This pin should be bypassed
with a 1µF capacitor.
GND (Exposed Pad) (Pin 11): Ground. This pin is the back
of the exposed pad package and must be soldered to the
PCB copper for minimal thermal resistance.
BLOCK DIAGRA
+
4.1V
C1
–
TO BAT
2
NTC
ACPR
4
HOT COLD DIS
ACPR
CHRG
5
C/5
6
3M
EN
7
3M
STOP
RECHRG
C/5
LOGIC
EN I_DETECT
SEL
C2
COUNTER
0.1V
OSCILLATOR
TIMER
3
C_TIMER
10
V_CC
1×
1×
–+
MA
CA
1V
0.2V
0.1V
LOGIC
C/5
C3
TO BAT 2.9V
I_DET
8
R_DET
PROG
9
R_PROG
1000×
BAT
1
VA
–+
1.2V
T_DIE
T_A
105°C
SHDN
GND
11
4061 BD
4061fa
8