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UCC38084
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UCC38084

  • Category:ACDC- and -DCDC-power supply
  • Product Name:Current-mode push-pull PWM with programmable slope compensation
  • Manufacturers:TI
  • Production Batch Number:11+
  • Encapsulation:8PDIP, 8SOIC, 8TSSOP
  • Stock Status:There is stock
  • Stock Quantity:20000
  • Minimum order quantity: 1
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  • Product introduction

The UCC38083/4/5/6 is a family of BiCMOS pulse-width modulated (PWM) DC-to-DC or offline fixed-frequency current mode switching power supply controllers. This dual output stage is configured for a push-pull topology. Half of the oscillators of the two output switches use the frequency of a switching trigger. The dead time between the two outputs is typically 110 nanoseconds, limiting the duty cycle of each output to less than 50%.

The new UCC3808x family is based on the UCC3808A architecture. Key differences include a programmable slope compensation ramp to the CS signal and the addition of error amplifiers. The ISET pin now flows out through an external resistor to set the severity of the ramp compensation function monitored internally.

characteristic
 
  • Programmable slope compensation
  • Internal soft start UCC38083/4
  • Cycle-by-cycle current limit
  • Typical operation with low start-up currents of 120 μA and 1.5 mA
  • External component oscillators are programmable from 50 kHz to 1 MHz
  • High current totem pole output stage driver with dual push-pull 1-one receiver and 0.5-A source configuration capability
  • Current sense discharge transistors to improve dynamic response
  • Internal fine-tuning bandgap reference
  • Undervoltage lockout and hysteresis
  • apply
    • High efficiency switch-mode power supply
    • Telecom DC-DC converters
    • Point load or point of available power supply modules
    • Low-cost push-pull and half-bridge applications
parameter
    UCC38084
topology   Boost, buck, half-bridge, push-pull
Control method   Current mode
Duty cycle (max.) (%)   50
Frequency (max) (khertz)   1000
On/Off of Undervoltage Lockout Threshold (5)   4.3/4.1
Pins/Packets   8PDIP，8SOIC，8TSSOP
(#) Regulated output   2
Operating temperature range(°C)   0 to 70

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Model Manufacturers lot number encapsulation illustrate
UCC38084 TI 11+ 8PDIP, 8SOIC, 8TSSOP Current-mode push-pull PWM with programmable slope compensation

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