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UCC2808 Datasheet PDF

Part Series:
UCC2808 Series
Category:
PWM Controllers
Description:
TEXAS INSTRUMENTS UCC2808AD-2 PWM Controller, 10V supply, 1MHz, 500mV/100mA out, SOIC-8
Updated Time: 2023/01/13 02:41:27 (UTC + 8)

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UCC2808AD-2 - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
1 MHz
Number of Pins
8 Pin
Supply Voltage (DC)
15.0V (max)
Case/Package
SOIC-8
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UCC2808AD-2 - TI Function Overview

The UCCx808A devices are a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808A contains all of the control and drive circuitry required for off-line or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.
The UCCx808A dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.
The UCCx808A family offers a variety of package options, temperature range options, and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery-powered systems.
The UCCx808A is an enhanced version of the UCC3808 family. The significant difference is that the A versions feature an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the oscillator dead time. The feature discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.
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