BQ7790503PW Part Information
The bq77904 and bq77905 devices are low-power battery pack protectors that implement a suite of voltage, current, and temperature protections without microcontroller (MCU) control. The device's stackable interface provides simple scaling to support battery cell applications from 3 S to 20 S or more. Protection thresholds and delays are factory-programmed and available in a variety of configurations. Separate overtemperature and undertemperature thresholds for discharge (OTD and UTD) and charge (OTC and UTC) are provided for added flexibility. The device achieves pack protection via the integrated independent CHG and DSG low-side NMOS FET drivers, which may be disabled through two control pins. These control pins may also be used to achieve cell protection solutions for higher series (6 S and beyond) in a simple and economical manner. To do this, simply cascade a higher device CHG and DSG outputs to the immediate lower device control pins. For reduced component count, all protection faults use internal delay timers.
- Additional Features u2013 Independent Charge (CHG) and Discharge (DSG) FET Drivers u2013 36-V Absolute Maximum Rating Per Cell Input u2013 Built-In-Self-Test Functions For High Reliability
- Current Protection u2013 Overcurrent Discharge 1: u201310 mV to u201385 mV u2013 Overcurrent Discharge 2: u201320 mV to 170 mV u2013 Short Circuit Discharge: u201340 mV to 340 mV u2013 Accuracy u00b120% for u2264 20 mV, u00b130% for > 20 mV across full temperature
- Full suite of voltage, current and temperature protections
- Normal Mode: 6 u00b5A (bq77904/bq77905)
- Open Cell and Open Wire Detection (OW)
- Scalable cell count from 3 S to 20 S or more
- Shutdown Mode: 0.5 u00b5A Maximum
- Temperature Protection u2013 Overtemperature Charge: 45u00b0C or 50u00b0C u2013 Overtemperature Discharge: 65u00b0C or 70u00b0C u2013 Undertemperature Charge: u20135u00b0C or 0u00b0C u2013 Undertemperature Discharge: u201320u00b0C or u201310u00b0C
- Voltage Protection (Accuracy u00b110 mV) u2013 Overvoltage: 3 V to 4.575 V u2013 Undervoltage: 1.2 V to 3 V
|Battery Protection||Over Current Over / Under Voltage Short Circuit|
|No. of Batteries||1|
|Battery IC Case Style||TSSOP|
|No. of Pins||20Pins|
|Supply Voltage Min||3V|
|Supply Voltage Max||25V|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||85°C|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 2 - 1 year|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- 3- to 5-series li-ion and li-phosphate ultra-low-power stackable battery protector | Texas Instruments
Frequently Asked Questions
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Additional datasheets, footprints and schematics for BQ7790503PW are listed in our Part Details tab. You can also find the BQ7790503PW image and similar parts on this details page.
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What category does BQ7790503PW fall under?
The BQ7790503PW is listed under Electronic & Electrical Components > Semiconductors - ICs > Battery Management.
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You can view similar parts to BQ7790503PW when available in the Battery Management range under the specifications section at the bottom of the details page.
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Is the BQ7790503PW RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
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