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UC2909-EP - SWITCHMODE LEAD-ACID BATTERY CHARGER

General Description

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.

Key Features

  • 1.
  • 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UC2909-EP www.ti.com SWITCHMODE LEAD-ACID BATTERY CHARGER Check for Samples: UC2909-EP SLUSA72 – JULY 2010 FEATURES 1 • 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 SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL 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.