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SAA1504T

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...

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SeekIC No. : 004483878 Detail

SAA1504T: 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 mod...

SAA1504T Data Sheet

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Part Number:
SAA1504T
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/26

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Product Details

Description



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.


Pinout

Connection Diagram


Specifications

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



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 of SAA1504T are especially designed for use in battery packs for portable telephones such as GSM.

The circuit of SAA1504T 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.

SAA1504T 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.




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