LTC4096 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC4096

Dual Input Standalone Li-Ion Battery Chargers

Linear Technology 

LTC4096/LTC4096X

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,

RIDC, to ground. When charging in constant-current mode,

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:

IBAT

=

VIDC

RIDC

• 1000

BAT (Pin 10): Charger Output. This pin provides charge

current to the battery and regulates the final float 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.

BLOCK DIAGRAM

DCIN

1

BAT

10

CC/CV

REGULATOR

CC/CV

REGULATOR

+

DCON

USBON

4.2V –

DCIN UVLO

+

USBIN UVLO

10mA MAX

CHRG 4

SUSP 5

LOGIC

RECHRG

TRICKLE

TERM

RSUSP

BAT –

RECHARGE

4.15V

RDC-PWR

DCIN

HIGH-Z

USBIN

RUSB-PWR

BAT

TRICKLE

CHARGE*

2.9V

DC_ENABLE

USB_ENABLE

CHARGER CONTROL

100mV

IBAT/1000

IBAT/1000

IBAT/1000

THERMAL

REGULATION

AND

SHUTDOWN

TERMINATION

*NOT PRESENT IN THE "X" VERSION

ITERM

6

RITERM

IDC

9

RIDC

IUSB

7

RIUSB

GND

8, 11

USBIN

2

4V

BAT

3 PWR

TDIE

115°C

150°C

4096 BD

4096xf

8

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