Purchase SAA1504T, In-stock SAA1504T From SeekIC, PDF Datasheet Download.

Part Number:
SAA1504T
Category：
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Vendor：
PHILIPS
Package Cooled：
SOP8
D/C：
Description：
The SAA1504T is manufactured in a BCD Power Logic 70 process and is intended to be u

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General Description

The SAA1504T is manufactured in a 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 continuously monitors the battery voltage, current and junction temperature and will disconnect the battery in case of an overload situation:
· Overdischarge protection prevents deep discharge of the cell; deep discharge of a Li-ion cell degrades the life cycle
· Overcharge protection for safety reasons
· Overcurrent protection on charge or discharge current rate
· Temperature protection for preventing charge or discharge at high temperatures
· Short circuit protection.

It must be stated that this is a safety IC to be integrated inside a battery pack. It is not primarily intended as an end
of charge provision.

Maximum Ratings

SYMBOL	PARAMETER	CONDITION	MIN.	MAX.	UNIT
V_CC	positive battery sense input voltage	DC constant	-0.3	+4.5	V
V_CC(clamp)	clamping voltage	I_CC(clamp) = 7 mA; t < 60 ms	-	8.5	V
I_CC(clamp)	clamping current		-	7	mA
V_rev	reverse charger voltage	V_rev = -(V_CC- V_VM); V_VMpositive with respect to V_CC	-	20	V
V_VM	negative sense input voltage		V_CC - 20	V_CC + 20	V
V_ST	voltage on pin ST		V_VM	V_CC	V
T_amb	ambient temperature		-25	+80	°C
T_stg	storage temperature		-55	+150	°C

Features

· Zero voltage start-up
· Discharge and charge overcurrent protection
· Automatic release of current protection at removal of charger or load
· Low current consumption in normal operating mode
· Very low current consumption when battery voltage is lower than 2.3 V
· Accurate voltage detection levels
· Continuous monitoring of battery voltage and charge or discharge current
· External power FETs are driven with an elevated supply voltage, reducing the on-resistance
· Able to accommodate 20 V charge voltage
· Read out of charge (disable) status
· Small package (SO8)
· Low external components count
· Temperature protection
· Charger reverse connection protection.