製品詳細

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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種類 タイトル 最新の英語版をダウンロード 日付
* データシート Switchmode Lead-Acid Battery Charger. データシート 2010年 7月 23日

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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