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BQ25170 ACTIVO Cargador lineal de 800 mA para baterías de iones de litio de 1 celda y LiFePO4 This product is an 800-mA, single cell Li-Ion and LiFePO4 battery linear charger with programmable charge voltage

Detalles del producto

Number of series cells 1 Charge current (max) (A) 2 Vin (max) (V) 15 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -20 to 70
Number of series cells 1 Charge current (max) (A) 2 Vin (max) (V) 15 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -20 to 70
SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 8 19.2 mm² 3 x 6.4 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Ideal for single (4.1 V or 4.2 V) and dual-cell (8.2 V or 8.4 V) Li-ion or Li-pol packs
  • Requires small number of external components
  • 0.3-V dropout voltage for minimizing heat dissipation
  • Better than ±1% voltage regulation accuracy with preset voltages
  • AutoCompM dynamic compensation of battery pack’s internal impedance to reduce charge time
  • Optional cell-temperature monitoring before and during charge
  • Integrated voltage and current regulation with programmable charge-current and high- or low-side current sensing
  • Integrated cell conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge
  • Charge status output for single or dual led or host processor interface
  • Automatic battery-recharge feature
  • Charge termination by minimum current
  • Automatic low-power sleep mode when VCC is removed
  • EVMs available for quick evaluation
  • Packaging: 8-pin SOIC, 8-pin TSSOP, 8-pin MSOP
  • Ideal for single (4.1 V or 4.2 V) and dual-cell (8.2 V or 8.4 V) Li-ion or Li-pol packs
  • Requires small number of external components
  • 0.3-V dropout voltage for minimizing heat dissipation
  • Better than ±1% voltage regulation accuracy with preset voltages
  • AutoCompM dynamic compensation of battery pack’s internal impedance to reduce charge time
  • Optional cell-temperature monitoring before and during charge
  • Integrated voltage and current regulation with programmable charge-current and high- or low-side current sensing
  • Integrated cell conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge
  • Charge status output for single or dual led or host processor interface
  • Automatic battery-recharge feature
  • Charge termination by minimum current
  • Automatic low-power sleep mode when VCC is removed
  • EVMs available for quick evaluation
  • Packaging: 8-pin SOIC, 8-pin TSSOP, 8-pin MSOP

The BQ2057 series advanced lithium-ion (Li-ion) and lithium-polymer (Li-pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp™ charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.

The BQ2057 continuously measures battery temperature using an external thermistor. For safety, the BQ2057 inhibits charge until the battery temperature is within user-defined thresholds. The BQ2057 then charges the battery in three phases: conditioning, constant current, and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the BQ2057 precharges using a low current to condition the battery. The conditioning charge rate is approximately 10% of the regulation current. The conditioning current also minimizes heat dissipation in the external pass-element during the initial stage of the charge. After conditioning, the BQ2057 applies a constant current to the battery. An external sense-resistor sets the current. The sense-resistor can be on either the high or low side of the battery without additional components. The constant-current phase continues until the battery reaches the charge-regulation voltage.

The BQ2057 then begins the constant-voltage phase. The accuracy of the voltage regulation is better than ±1% over the operating-temperature and supply-voltage ranges. For single and dual cells, the BQ2057 is offered in four fixed-voltage versions: 4.1 V, 4.2 V, 8.2 V, and 8.4 V. Charge stops when the current tapers to the charge termination threshold, I(TERM). The BQ2057 automatically restarts the charge if the battery voltage falls below the V(RCH) threshold.

The designer also may use the AutoComp feature to reduce charging time. This proprietary technique allows safe and dynamic compensation for the internal impedance of the battery pack during charge.

The BQ2057 series advanced lithium-ion (Li-ion) and lithium-polymer (Li-pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp™ charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.

The BQ2057 continuously measures battery temperature using an external thermistor. For safety, the BQ2057 inhibits charge until the battery temperature is within user-defined thresholds. The BQ2057 then charges the battery in three phases: conditioning, constant current, and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the BQ2057 precharges using a low current to condition the battery. The conditioning charge rate is approximately 10% of the regulation current. The conditioning current also minimizes heat dissipation in the external pass-element during the initial stage of the charge. After conditioning, the BQ2057 applies a constant current to the battery. An external sense-resistor sets the current. The sense-resistor can be on either the high or low side of the battery without additional components. The constant-current phase continues until the battery reaches the charge-regulation voltage.

The BQ2057 then begins the constant-voltage phase. The accuracy of the voltage regulation is better than ±1% over the operating-temperature and supply-voltage ranges. For single and dual cells, the BQ2057 is offered in four fixed-voltage versions: 4.1 V, 4.2 V, 8.2 V, and 8.4 V. Charge stops when the current tapers to the charge termination threshold, I(TERM). The BQ2057 automatically restarts the charge if the battery voltage falls below the V(RCH) threshold.

The designer also may use the AutoComp feature to reduce charging time. This proprietary technique allows safe and dynamic compensation for the internal impedance of the battery pack during charge.

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Documentación técnica

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Tipo Título Fecha
* Data sheet Advanced Linear Charge Mgmt IC for Single/Two-Cell Lithium-Ion & Lithium-Polymer datasheet (Rev. G) 23 dic 2022

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

GUI para el módulo de evaluación (EVM)

SLVC024 bq24715 EVM GUI Package

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ2000 Cargador de batería para multiquímica de modo de conmutación con terminación de detección de tensión BQ2000T Cargador de baterías para multiquímica de modo de conmutación con terminación dT/dt BQ2002 Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tiempo de desconexión Setup1 BQ2002C Controlador de carga de batería NiCd/NiMH con dV negativo, PVT BQ2002D Controlador de carga de batería NiCd/NiMH con terminación dT/dt BQ2002E Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tMTO Setup1 BQ2002F Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tiempo de desconexión Setup2 BQ2002G Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tMTO Setup2 BQ2002T Controlador de carga de batería NiCd/NiMH con terminación dT/dt y fallo de baja temperatura BQ2031 Cargador de batería de plomo ácido de modo de conmutación con algoritmos de carga seleccionables por BQ2057C Controlador de carga de batería de iones de litio de 1 celdas lineales con caída baja con AutoCompTM BQ24010 Cargador de batería lineal de iones de litio de 1 celda y 1 A con presencia de CA y detección de tem BQ24012 Cargador de batería lineal de iones de litio de 1 celda y 1 A con FET, posibilidad de carga y presen BQ24013 Cargador de batería lineal de iones de litio de 1 celda y 1 A con activación de carga y posibilidad BQ24200 Cargador de iones de litio de 500 mA y 4,2 V para aplicaciones de corriente limitada con detección d BQ24201 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada con detección d BQ24202 Cargador de iones de litio de 500 mA y 4,2 V para aplicaciones de corriente limitada con estado de c BQ24203 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada con estado de c BQ24205 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada en MSOP-8 BQ24715 Controlador de carga de batería reductor NVDC de 2-3 celdas SMBus con selectores MOSFET de potencia
Software
Soporte de software
TEMPSENSE-SW Software Temp Sense Designer
Soporte de software

TEMPSENSE-SW — Software Temp Sense Designer

The TempSense Designer software allows the user to easily design temperature sensing circuits for many of the Texas Instruments battery charger devices. A full listing of the supported devices is included under the "Support" menu in the program. The user can use the thermisters included in the (...)
Paquete Pasadores Descargar
SOIC (D) 8 Ver opciones
TSSOP (PW) 8 Ver opciones
VSSOP (DGK) 8 Ver opciones

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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