saa1502ats NXP Semiconductors, saa1502ats Datasheet - Page 2

• Manufacturer Part Number: saa1502ats
• Description: Safety Ic For Li-ion
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
ORDERING INFORMATION
1998 Jan 15
SAA1502ATS
Integrated power switches
Temperature protection
Zero voltage start-up
Discharge and charge overcurrent protection
Automatic release of current protection at removal of
charger or load
Extremely low current consumption when battery
voltage is lower than 2.3 V
Low current consumption in normal operation mode
Accurate voltage detection levels
Low resistance in current path
Able to accommodate 17.5 V charge voltage
Read out of charge disable status
Small package (SSOP16)
Low external components count
Continuous monitoring of the battery voltage and
(dis)charge current.
Safety IC for Li-ion
NUMBER
TYPE
SSOP16
NAME
plastic shrink small outline package; 16 leads; body width 5.3 mm
DESCRIPTION
2
GENERAL DESCRIPTION
The SAA1502ATS is manufactured in a Bipolar, CMOS
and DMOS (BCD) Power Logic 70 process and is intended
to be used as a protection circuit for single cell Li-ion
battery packs. The current and voltage ratings are
especially designed for use in battery packs for portable
telephones such as GSM.
The circuit monitors the battery voltage, current and
temperature and will disconnect the battery in case of an
overload situation:
It must be stated that the unit is a safety unit to be
integrated inside a battery pack. It is not intended as an
end of charge provision.
PACKAGE
Overdischarge protection prevents deep discharge of
the cell; deep discharge of a Li-ion cell degrades the
lifetime
Overcharge protection for safety reasons
Overcurrent protection on charge as well as discharge
current rate
Temperature protection for preventing charge or
discharge at high temperatures.
Preliminary specification
SAA1502ATS
VERSION
SOT338-1