MFG:PHILIPS Package Cooled:SOP8
MFG: PHILIPS
Package Cooled: SOP8
Description: The SAA1504T is manufactured in a BCD Power Logic 70 process and is intended to be used as a protectio...
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.
| SYMBOL | PARAMETER | CONDITION | MIN. | MAX. | UNIT |
| VCC | positive battery sense input voltage | DC constant | -0.3 | +4.5 | V |
| VCC(clamp) | clamping voltage | ICC(clamp) = 7 mA; t < 60 ms | - | 8.5 | V |
| ICC(clamp) | clamping current | - | 7 | mA | |
| Vrev | reverse charger voltage | Vrev = -(VCC - VVM); VVM positive with respect to VCC |
- | 20 | V |
| VVM | negative sense input voltage | VCC - 20 | VCC + 20 | V | |
| VST | voltage on pin ST | VVM | VCC | V | |
| Tamb | ambient temperature | -25 | +80 | °C | |
| Tstg | storage temperature | -55 | +150 | °C |
SAA1504T
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