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UCC3808A-1
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UCC3808A-1

  • 所属类别：ACDC-和-DCDC-电源
  • 产品名称：低功耗电流模式推挽 PWM
  • 厂商：TI
  • 生产批号：10+
  • 封装：8PDIP, 8SOIC, 8TSSOP
  • 库存状态：有库存
  • 库存量：6000
  • 最低订购量：1
  • 详细资料：点击查找UCC3808A-1的pdf资料
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  • Product Introduction

The UCC3808A is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. Contains all control and drive circuitry required for UCC3808A offline or switching with minimal number of external components, power supply, DC to DC fixed frequency current mode.

The UCC3808A dual-output drive stage is arranged in a push-pull configuration. Half of the oscillators of the two output switches use one switch flip-flop frequency. The dead time between two outputs, typically between 60 nanoseconds and 200 nanoseconds, depends on the values of capacitance and resistance, limiting the duty cycle of less than 50% per output stage.

characteristic
 
  • The dual-output drive stage is in a push-pull configuration
  • Current-sensing discharge transistors to improve dynamic response
  • Typical starting current of 130μA
  • Typical operating current of 1 mA
  • to 1 MHz operation
  • Internal soft start
  • On-chip 2-MHz gain bandwidth product error amplifier
  • Clamping of VDD on the chip
  • The 500-mA peak source of the output drive stage is capable of current, 1 peak, absorbing current
parameter
    UCC3808A - 1
topology   Boost, buck, half-bridge, push-pull
Control method   Current mode
Duty Cycle (Max) (%)   50
Frequency (max) (kHz)   1000
On/off of undervoltage lockout threshold (5)   12.5/8.3
Pin/Pack   8PDIP，8SOIC，8TSSOP
(#) Regulated output   2
Operating Temperature Range (°C)   0 to 70

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