ltc4096 Linear Technology Corporation, ltc4096 Datasheet - Page 8

• Manufacturer Part Number: ltc4096
• Description: Dual Input Standalone Li-ion Battery Chargers
• Manufacturer: Linear Technology Corporation

PIN FUNCTIONS
GND (Pin 8): Ground.
IDC (Pin 9): Charge Current Program for Wall Adapter
Power. The charge current is set by connecting a resistor,
R
this pin servos to 1V. The voltage on this pin can be used
to measure the battery current delivered from the DCIN
input using the following formula:
BLOCK DIAGRAM
LTC4096/LTC4096X
8
IDC
I
BAT
, to ground. When charging in constant-current mode,
CHRG
SUSP
=
4
5
*NOT PRESENT IN THE "X" VERSION
R
V
IDC
IDC
10mA MAX
•1000
R
SUSP
LOGIC
RECHRG
TRICKLE
TERM
TERMINATION
DCIN
1
RECHARGE
CHARGE*
TRICKLE
4.2V
BAT
+
–
–
+
+
–
+
–
+
–
100mV
4.15V
2.9V
DCIN UVLO
BAT
REGULATOR
6
ITERM
R
CC/CV
I
ITERM
BAT
/1000
DC_ENABLE
BAT (Pin 10): Charger Output. This pin provides charge
current to the battery and regulates the fi nal fl oat voltage
to 4.2V.
Exposed Pad (Pin 11): GND. The exposed backside of the
package is ground and must be soldered to PC board ground
for electrical connection and maximum heat transfer.
DCON
9
IDC
R
I
CHARGER CONTROL
BAT
IDC
/1000
BAT
10
USBON
7
USB_ENABLE
IUSB
R
I
BAT
IUSB
/1000
HIGH-Z
GND
8, 11
USBIN
DCIN
REGULATOR
CC/CV
REGULATION
SHUTDOWN
USBIN UVLO
R
R
THERMAL
USB-PWR
DC-PWR
AND
+
–
+
–
+
–
–
4V
BAT
T
115°C
150°C
DIE
USBIN
2
4096 BD
3 PWR
4096xf