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UC2965N датащи(PDF) 1 Page - Texas Instruments |
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UC2965N датащи(HTML) 1 Page - Texas Instruments |
1 / 6 page UC1965 UC2965 UC3965 SLUS300A - APRIL 1999 FEATURES • Accessible 2.5V Precision Reference • 0.4% Initial Reference Accuracy • 1% Reference Accuracy over Line, Load, and Full Temperature Range • Low 1mV Offset Error Amplifier • Supports Closed Loop Soft Start • 2X Inverting Amplifier / Buffer Output • 4.1V Undervoltage Lockout • ICC 2mA at 5V • 8-Pin SOIC or DIL Package Precision Reference with Low Offset Error Amplifier 8COMP GND VOUT 7VFB 6VREF 5NI 1 2 3 4 VCC OFFSET EA OB UVLO VREF 2.5V VCC 15k + – 7.5k 5k + – 5k 2k BLOCK DIAGRAM UDG-98055 DESCRIPTION The UC3965 is suitable for applications needing greater precision and more functionality than the TL431 type shunt regulators. The wide range VCC input capability enables the device to be biased from the secondary side output voltage rail, resulting in closed loop soft start. The UC3965 includes an accessible 2.5V precision reference which offers 0.4% initial and 1% reference accuracy over line, load, and full tempera- ture range with a low offset error amplifier, a 2X inverting amplifier/buffer, and an undervoltage lockout circuit. The IC is ideally suited for applica- tions where high precision PWM power supply regulation is required. Typically, the error amplifier is configured to compare a fraction of the to be regulated power supply voltage to the on-chip 2.5V reference. The 2X amplifier/buffer output is then used to drive a PWM controller or regulator. The UC3965 is also capable of driving an optocoupler diode for isolated applications. application INFO available |
Аналогичный номер детали - UC2965N |
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Аналогичное описание - UC2965N |
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