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UC2825AQDWRQ1 数据表(PDF) 1 Page - Texas Instruments |
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UC2825AQDWRQ1 数据表(HTML) 1 Page - Texas Instruments |
1 / 14 page 1 FEATURES DESCRIPTION UC2825A-Q1 SLUS781 – SEPTEMBER 2007 www.ti.com HIGH-SPEED PWM CONTROLLER • Qualified for Automotive Applications • Improved Version of the UC3825 PWM The UC2825A pulse-width modulation (PWM) controller is an improved versions of the standard • Compatible With Voltage-Mode or UC3825. Performance enhancements have been Current-Mode Control Methods made to several of the circuit blocks. Error amplifier • Practical Operation at Switching Frequencies gain bandwidth product is 12 MHz, while input offset to 1 MHz voltage is 2 mV. Current limit threshold is specified to a tolerance of 5%. Oscillator discharge current is • 50-ns Propagation Delay to Output specified at 10 mA for accurate dead-time control. • High-Current Dual Totem-Pole Outputs: Frequency accuracy is improved to 6%. Startup 2 A (Peak) supply current, typically 100 μA, is ideal for off-line • Trimmed Oscillator Discharge Current applications. The output drivers are redesigned to actively sink current during undervoltage lockout • Low 100-μA Startup Current (UVLO) at no expense to the startup current • Pulse-by-Pulse Current-Limiting Comparator specification. In addition, each output is capable of • Latched Overcurrent Comparator With 2-A peak currents during transitions. Full-Cycle Restart BLOCK DIAGRAM 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
类似零件编号 - UC2825AQDWRQ1 |
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类似说明 - UC2825AQDWRQ1 |
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