LM3622M-8.4 National Semiconductor Corporation, LM3622M-8.4 Datasheet - Page 2

• Manufacturer Part Number: LM3622M-8.4
• Description: Lithium-ion Battery Charger Controller
• Manufacturer: National Semiconductor Corporation

www.national.com
Pin No.
Connection Diagram
Pin Description
1
2
3
4
5
6
7
8
LV
Name
LV
GND
CEL
EXT
V
CS
LV
CC
SEL
ENB
Refer to the Ordering Information Table in this Datasheet for Specific Part Number
Power Supply
Ground
Output
Output
Input
Input
Input
Input
I/O
Low-voltage detection threshold Select. The threshold is 2.15V/cell when this pin is
pulled low to GND and 2.70V/cell when it is pulled up to V
sensed between CEL and CS pins.
Low-voltage detection Enable. The low-voltage detection is enabled when this pin is
pulled Low to GND. Pulling this pin HIGH to V
Output of the low-voltage detection. This pin is a NPN open-collector output that goes
to low impedance state when LV
the threshold set by LV
when LV
source to recondition a deeply depleted battery.
IC common.
Input for battery charge current and battery negative-terminal voltage sensing. Battery
charging current is sensed through an external resistor, R
battery’s negative terminal and GND. The maximum charge current is regulated to a
value of 100mV/R
Battery positive-terminal voltage sensing.
Output of the controller for driving a PNP transistor or P-MOSFET. The controller
modulates the current sinking into this pin to control the regulation of either the charge
current or the battery voltage.
IC power supply
8-Lead Surface Mount Package
ENB
See NS Package M08A
is pulled HIGH to V
CS
.
2
SEL
. LV stays in HIGH impedance state at any battery voltage
10097402
CC
ENB
. LV can be used for turning on a low current
is pulled LOW and the battery voltage is below
Description
CC
disables the low-voltage detection.
CS
CC
, connected between the
. The battery voltage is