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UC1525AJ Datasheet(PDF) 3 Page - Texas Instruments |
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UC1525AJ Datasheet(HTML) 3 Page - Texas Instruments |
3 / 9 page 3 UC1525A/27A UC2525A/27A UC3525A/27A ELECTRICAL CHARACTERISTICS:+VIN = 20V, and over operating temperature, unless otherwise specified, TA =TJ. PARAMETER TEST CONDITIONS UC1525A/UC2525A UC1527A/UC2527A UC3525A UC3527A UNITS MIN TYP MAX MIN TYP MAX Reference Section Output Voltage TJ = 25°C 5.05 5.10 5.15 5.00 5.10 5.20 V Line Regulation VIN = 8 to 35V 10 20 10 20 mV Load Regulation IL = 0 to 20mA 20 50 20 50 mV Temperature Stability (Note 5) Over Operating Range 20 50 20 50 Total Output Variation (Note 5) Line, Load, and Temperature 5.00 5.20 4.95 5.25 V Shorter Circuit Current VREF =0,TJ = 25°C 80 100 80 100 mA Output Noise Voltage (Note 5) 10Hz 10kHz, T = 25 C J ≤° 40 200 40 200 µVrms Long Term Stability (Note 5) TJ = 125°C 20 50 20 50 mV Oscillator Section(Note 6) Initial Accuracy (Notes5&6) TJ = 25°C ± 2 ± 6 ± 2 ± 6 % Voltage Stability (Notes5&6) VIN =8to35V ± 0.3 ± 1 ± 1 ± 2 % Temperature Stability (Note 5) Over Operating Range ± 3 ± 6 ± 3 ± 6 % Minimum Frequency RT = 200kΩ,CT = 0.1µF 120 120 Hz Maximum Frequency RT =2kΩ,CT = 470pF 400 400 kHz Current Mirror IRT = 2mA 1.7 2.0 2.2 1.7 2.0 2.2 mA Clock Amplitude (Notes5&6) 3.0 3.5 3.0 3.5 V Clock Width (Notes5&6) TJ = 25°C 0.3 0.5 1.0 0.3 0.5 1.0 µs Sync Threshold 1.2 2.0 2.8 1.2 2.0 2.8 V Sync Input Current Sync Voltage = 3.5V 1.0 2.5 1.0 2.5 mA Error Amplifier Section (VCM = 5.1V) Input Offset Voltage 0.5 5 2 10 mV Input Bias Current 1 10 1 10 µA Input Offset Current 1 1 µA DC Open Loop Gain RL ≥ 10MΩ 60 75 60 75 dB Gain-Bandwidth Product (Note 5) AV = 0dB, TJ = 25°C 1 2 1 2 MHz DC Transconductance (Notes5&7) TJ =25°C, 30kΩ≤ RL ≤ 1MΩ 1.1 1.5 1.1 1.5 mS Output Low Level 0.2 0.5 0.2 0.5 V Output High Level 3.8 5.6 3.8 5.6 V Common Mode Rejection VCM = 1.5 to 5.2V 60 75 60 75 dB Supply Voltage Rejection VIN = 8 to 35V 50 60 50 60 dB Note 5: These parameters, although ensured over the recommended operating conditions, are not 100% tested in production. Note 6: Tested at fOSC = 40kHz (RT = 3.6k W,CT = 0.01mF, RD =0W). Approximate oscillator frequency is defined by: f CR TT D = + 1 0.7 3R () Note 7: DC transconductance (gM) relates to DC open-loop voltage gain (AV) according to the following equation: AV =gMRL where RL is the resistance from pin 9 to ground. The minimum gM specification is used to calculate minimum AV when the error amplifier output is loaded. |
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