LM3622AM-8.2 NSC [National Semiconductor], LM3622AM-8.2 Datasheet - Page 2

• Manufacturer Part Number: LM3622AM-8.2
• Description: Lithium-Ion Battery Charger Controller
• Manufacturer: NSC [National Semiconductor]

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
below the threshold set by LV
voltage when LV
current 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
between the 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
See NS Package M08A
ENB
2
is pulled HIGH to V
DS100974-2
SEL
CS
. LV stays in HIGH impedance state at any battery
.
Description
ENB
CC
is pulled LOW and the battery voltage is
. LV can be used for turning on a low
CC
disables the low-voltage detection.
CC
. The battery voltage is
CS
, connected