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Circuitos integrados para cargador de batería

UC2909-EP

ACTIVO

Cargador de baterías de plomo ácido de modo conmutado con detección de corriente diferencial, produc

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UC2909-EP

ACTIVO
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Detalles del producto

Rating HiRel Enhanced Product Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Lead Acid Charge current (max) (A) 2 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 7.5 Vin (max) (V) 40 Absolute max Vin (max) (V) 40 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Control interface Standalone (RC-Settable) Operating temperature range (°C) -55 to 125
Rating HiRel Enhanced Product Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Lead Acid Charge current (max) (A) 2 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 7.5 Vin (max) (V) 40 Absolute max Vin (max) (V) 40 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Control interface Standalone (RC-Settable) Operating temperature range (°C) -55 to 125
SOIC (DW) 20 131.84 mm² 12.8 x 10.3
  • Accurate and Efficient Control of Battery Charging
  • Average Current Mode Control from Trickle to Overcharge
  • Resistor Programmable Charge Currents
  • Thermistor Interface Tracks Battery Requirements Over Temperature
  • Output Status Bits Report on Four Internal Charge States
  • Undervoltage Lockout Monitors VCC and VREF
  • APPLICATIONS
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C/125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
    • Not to Exceed 185.35-KHz Oscillation Frequency at 125°C

(1) Additional temperature ranges available - contact factory
  • Accurate and Efficient Control of Battery Charging
  • Average Current Mode Control from Trickle to Overcharge
  • Resistor Programmable Charge Currents
  • Thermistor Interface Tracks Battery Requirements Over Temperature
  • Output Status Bits Report on Four Internal Charge States
  • Undervoltage Lockout Monitors VCC and VREF
  • APPLICATIONS
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C/125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
    • Not to Exceed 185.35-KHz Oscillation Frequency at 125°C

(1) Additional temperature ranges available - contact factory

The UC2909 controls lead acid battery charging with a highly efficient average current mode control loop. This chip combines charge state logic with average current PWM control circuitry. Charge state logic commands current or voltage control depending on the charge state. The chip includes undervoltage lockout circuitry to insure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential current sense amplifier, a 1.5% voltage reference, a –3.9-mV/°C thermistor linearization circuit, voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode bits, and a 100-mA open collector output driver.

The UC2909 controls lead acid battery charging with a highly efficient average current mode control loop. This chip combines charge state logic with average current PWM control circuitry. Charge state logic commands current or voltage control depending on the charge state. The chip includes undervoltage lockout circuitry to insure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential current sense amplifier, a 1.5% voltage reference, a –3.9-mV/°C thermistor linearization circuit, voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode bits, and a 100-mA open collector output driver.
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Documentación técnica

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Tipo Título Fecha
* Data sheet Switchmode Lead-Acid Battery Charger. datasheet 23 jul 2010

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

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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