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BQ7790511PWR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

BQ7790511PWR product

BQ7790511PWR

Battery Management

Li-ion protector3S4S5Sbattery protectionTSSOP-20low-side NMOS driver

BQ7790511PWR is a factory-configured TI protector for 3- to 5-series Li-ion/Li-polymer battery packs, integrating voltage, current, temperature and open-wire protection with CHG/DSG low-side NMOS drivers.

Best for

  • 3- to 5-series Li-ion battery packs
  • Low-power standalone protection designs
  • Applications requiring separate CHG and DSG FET control

Avoid if

  • Protection thresholds must be field-programmable
  • A battery monitor with telemetry or state-of-charge measurement is required
  • The required pack configuration does not match the factory-set thresholds

Check before use

  • Confirm the sense-resistor value produces the required current trip levels.
  • Verify CCFG wiring for the selected 3-, 4-, or 5-cell configuration.
  • Validate CHG FET gate protection and PACK- transient exposure.
  • Confirm NTC divider trip points using the selected thermistor.

Key specifications

Cell configuration
3 to 5 series cells
Overvoltage protection
4.25 V, 1 s delay, 200 mV hysteresis
Undervoltage protection
2.7 V, 1 s delay, 200 mV hysteresis
Overcurrent protection
50 mV OCD1 / 120 mV OCD2
Short-circuit protection
280 mV, 360 µs typical delay
Package
20-pin TSSOP (PW)

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level 2-260C-1 YEAR
ECCN
-
HTSUS
-

Application

Battery protection packsPower and garden toolsUPS and energy storageLight electric vehicles

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

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Alternative components

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Design and risk insights

Questions & answers

BQ7790511PWR is a Texas Instruments BQ77905-family battery protection IC for 3-, 4-, or 5-series Li-ion/Li-polymer packs. It drives separate low-side charge and discharge NMOS FETs.